Analysis of lidding films and its advantages

In the food industry, and especially in produce, lidding film (or top seal) has become a primary flexible packaging choice. Not only does it provide extra benefits for customers, but it creates opportunities for brands to elevate their product as well.

What are lidding films?

Lidding films are a type of flexible packaging film. Generally speaking, they are most commonly made from paper, foils, polyethylene, polyester, and other types of flexible packaging materials.

Lidding films are available in both easy-peel and lock-tight versions. With easy-peel, as the name would suggest, the consumer can peel the film from the container with relative ease.

On the other hand, lock-tight films seal so tightly; you need a tool (such as scissors or a knife) to gain access to the product. This type of film features a layer of sealant that is laminated to the lidding film for superior adhesion.

What are lidding films used for?

Lidding films are most commonly used to seal plastic containers, paperboard pints, or trays for food items such as dairy products like sour cream and cottage cheese. Other products packaged in lidding films may also include canned soups, meats, microwave dinners, and other foods packaged in rigid containers.

What are the benefits of lidding film?

1.Consumers can see the product that they’re purchasing clearly through the film while keeping the package intact. Also, peel and reseal lidding film allows customers to completely reseal their produce packaging with ease.

2.Rather than being limited to a label on a container, lidding film has a large surface area that can enable innovative branding and maximum shelf impact.

3.Lidding film offers high barrier protection capabilities with the use of specialty films in production. Barrier protected film keeps produce fresh for longer and extends the shelf life of a product. Find out more about barrier protection in our blog post here.

4.In addition to being able to reseal the product completely, you can integrate traceability software into lidding film with the help of our specialized equipment department. This allows you to keep track of your raw materials from the time they enter your facility to when they’re released into the field. Adding this software increases supply chain visibility, improves quality control, and offers your company extra protection should you have to recall any of your products.

5.Lidding film uses up to 25% less plastic than a traditional clamshell. At Associated, we also offer fully recyclable and sustainable film options for lidding film.

At Associated, we are dedicated to pushing the boundaries with lidding film. We have an in-house tactical team that meets wee kly to progress innovations and many contacts and resources, as well as partners at the Rutgers University Food Science Department.

Interested in finding out more? Reach out to us via our online contact form or request a quote here.

For over six years ZEKUN has been helping customers across the world to identify and create the most effective lidding solutions to meet individual packaging needs. Used in a wide range of retail, supermarket and bulk packed tray products, lidding film technology has developed a great deal in recent years, with ZEKUN constantly seeking new and innovative ways to satisfy the most challenging of lidding requirements.

Our current range of lidding films offer a number of distinct advantages, including:

Cost savings – up to 20% saving in tray costs, with removal of rigid lid

Easy first opening

Superior reclosing / resealing functionality

High shrinkage effect

Anti-fog

High moisture barrier

Product waste reduction

Designed with the essential strength, peelability, puncture resistance and barrier properties required to maintain peak product freshness; our high quality 8-colour printed films provide great shelf presence and extended shelf life for a variety of ‘easy peel’ or ‘weld seal’ applications.

We have years of experience matching the correct film type with a particular tray material and offer lidding film solutions for a wide range of tray types, including PP, PET, PVC, PS and foil. We can also match your lidding requirements with thermoform, semi-rigid bottom web films.

Complementing established monolayer and laminate solutions for lidding we now offer lidding film for re-closing mono-material trays. European sourced, this film offers optimum machinability and superior reclosing, which is suitable for packaging cheese, meat, ready meals, snacks and confectionary.

The difference and application between three-side sealing bag and back sealing bag

Three-side-seal packaging bags and back-seal bags are very different from the requirements of packaging machine loss according to the shape and weight of the packaging content. The three-side sealing bag, as the name implies, is to seal the three sides of the packaging bag, and load things from the top seal, while the back-seal bag encapsulates the plastic packaging from the middle. The following description of the bag method is based on the packaging mechanism of the two The difference:

1. Back seal bag

Back-seal bag, also called middle-seal bag, is the vocabulary of the packaging industry. Simply put, it is a packaging bag with edge-sealing on the back of the bag. Back-seal bag has a wide range of applications, such as general candy, bagged instant noodles, bagged dairy products, etc. All use this type of packaging.

Compared with other packaging forms, back-seal bags have no edges on both sides of the bag body, so the pattern on the front of the package is complete and more beautiful. At the same time, in the layout design, the bag body pattern can be designed as a whole, which can maintain the continuity of the picture. And because the seal is on the back, both sides of the bag can withstand greater pressure, reducing the possibility of package damage. Moreover, the packaging bag of the same size adopts the form of back seal to seal the smallest total length, which also reduces the probability of seal cracking in a certain sense.

In terms of material, back-sealed bags are no different from general heat-sealed bags. In addition, composite packaging such as aluminum-plastic and aluminum-paper is also widely used in modified packaging. The most common forms of packaging are milk packaging in bags and melon seed packaging in large bags. Back-seal bags also have requirements for the weight of the contents, and should not be too heavy, within 10KG.

Back-seal bags can be used as food bags, and also play a role in the beauty packaging industry, preventing moisture, water, insects, and preventing things from being scattered. Adapt to the packaging requirements of different types of products.

2. Three-side sealing packaging bag

Three-side sealing bag, namely three-side sealing, leaving only one opening for the user to install the product. Three-side sealing bags are the most common way of making bags. The side-sealed bag has the best airtightness, and it is usually necessary to use this bag making method to pull out the real bag.

The main products and characteristics of the three-side sealing bag: plastic food packaging bags, vacuumized nylon bags, rice bags, upright bags, zipper bags, aluminum foil bags, tea bags, candy bags, powder bags, rice bags, cosmetic bags, facial masks and eye masks Bags, medicine bags, pesticide bags, paper-plastic bags, bowl surface sealing film, special-shaped bags, anti-static bags, film rolls and plastic bags for automatic packaging machines. Used for sealing packaging of various consumables such as printers, copiers, etc.; and other bottle sealing films of various conventional materials.

The compound three-side sealing plastic bag has good barrier properties, moisture resistance, low heat sealability, high transparency, and can also be colored by color printing. Commonly used in daily necessities composite packaging bags, cosmetic composite packaging bags, toy composite packaging bags, gift composite packaging bags, hardware composite packaging bags, clothing composite packaging bags, shopping mall composite packaging bags, electronic product composite packaging bags, jewelry composite packaging bags, sports Precision packaging of products in various industries, such as equipment composite packaging bags.

Three-side sealing bags need to be vacuum packed in many cases, and the requirements for use are also very diversified.

Yes, food, cosmetics, industry, etc. can all be involved. The first production process meets most bag-making requirements and reduces loss. It can be used for bag-making machines with small or large door widths, mainly due to the size of the quantity. The three-side sealing bag is to prevent food from spoiling. In order to make the shelf life longer, vacuum packaging is mainly to extract all the air in the bag and then seal it, so that the bag is always in a high-pressure state to reduce the growth of bacteria. Customers can also do it by themselves. Sterilization treatment.

The three-side sealing bag making method has low loss, the temperature is adjusted by PID, adjustable from 0 to 300℃, non-contact automatic control, and centralized setting of man-machine interface. Custom-length bag making, photoelectric tracking bag making. The punching method can be set to continuous, interval, stop, and the punching time can be preset. The double delivery method can be one to six times delivery. The advantages of the packaging machine improve the product grade. The three-side sealing bag has excellent sealing performance, high barrier degree, ultra-low oxygen and moisture permeability, moisture-proof, pollution-proof, radiation-proof and anti-corrosion, strong mechanical properties, bright and practical appearance, non-toxic, and tasteless in line with national standards. It has the characteristics of easy loading and unloading, stacking, handling and storage.

In contrast, the three-side seal bag can be distinguished from the back seal bag at a glance in the edge sealing process, and the three-side seal bag does not have the back seal edge. When in use, the three-side seal bag has better air-tightness and can be used as a food packaging bag that needs to be vacuumed. It can prevent food from spoiling and extend the shelf life of the food; at the same time, the use of the three-side seal bag can reduce packaging materials Attrition rate.

Three-side-sealed packaging bags and back-sealing bags have their own advantages, and Zekun Packaging can fully meet its production process requirements.

Pet food packaging bags are equally important for pets

With the gradual improvement of people’s material life, more and more families keep pets. Outside of busy work, young people hope to heal themselves through the company and play with pets, and also reap the fun of petting cats and dogs. The brand captures this consumer demand and designs ideas driven by market trends , Novelty pet food packaging can quickly attract consumers’ attention. Use quality packaging to satisfy people’s desire for the best products for “children”. As for those who want to keep pets, they should also abandon the three-minute heat. Only when you truly take the responsibility of raising and loving your pet can you live up to the meaning of companionship.

With the gradual development of the global pet food industry, in the established and mature pet markets in North America and Europe, more and more consumers have also noticed that the safety of pet food packaging is not lower than that of pet food raw materials.

This awakening of awareness has also prompted more and more pet food manufacturers and brands to choose more environmentally friendly, high-quality, and safe packaging materials to cooperate with manufacturers. Many American brands, especially those that have pet wet food, have claimed that all their wet food cans do not contain any BHA or BHT or heavy metals.

Today, when pets are getting more and more attention, the packaging of pet food has become particularly important. The quality of pet food packaging bags directly affects the quality of pet food. Zekun Packaging Technology Co., Ltd. tailors the size, shape and material thickness of the packaging bag for pet food products. Welcome to call and submit manuscripts to inquire about custom-made details! The following are the points that need to be paid attention to when customizing pet food for your reference:

1: Size requirements

Whether it is a dog food packaging bag or a cat food packaging bag, the food of each small animal is different, the size of the particles is different, and the weight of each package is also different, so we must first determine the packaging bag Weight, size, so that we can produce a satisfactory product.

2: There are some materials for pet food packaging bags

The main production materials of pet food packaging bags are as follows:

(1) Co-extruded PE film

(2) Woven bag

(3) PP/PE, PE/PE, PET/PE, NY/PE two-layer composite bag

(4) PET/NY/PE, PET/MPET/PE, PET/AL/PE three-layer composite bag

(5) PET/NY/AL/PE, PET/AL/PET/PE four-layer composite bag

(6) PET/NY/AL/RCPP high temperature retort pouched wet grain/soft can packaging

The price of each material is different, and the quality is different, so you need to choose your favorite packaging bag according to the positioning of the product.

3: What are the bag shapes of pet food bags

Pet food bag packaging bag type: flat bottom bag, four-side sealing bag, eight-side sealing bag, self-supporting ziplock bag, etc.

4: The importance of sealability of pet food packaging bags

Pet food also has shelf-life requirements. During the shelf-life, pet food must ensure that it does not deteriorate, taste, or lose nutrients. There are many factors that affect the shelf life, including preservatives, packaging, storage conditions and other factors. Here we must pay attention to the sealing properties of pet food packaging bags.

>>>>>For more details on printing of pet food packaging bags, please consult ZeKun

As the “unplasticized guest” must choose the reusable silicone fresh-keeping bag

Although the editor has been working hard to implement the “plastic reduction action”, I believe that you who love the earth and life are also. But sometimes it is inevitable that disposable plastic bags will still be used

Today, Zekun Packaging strongly recommends a reusable food-grade platinum silicone storage bag, which will make your life a big step towards environmental protection, safety and fashion!

The preservation of food has always been a headache. Especially in summer, the hot weather makes the preservation period of food shorter and more prone to spoilage.

Therefore, the silicone fresh-keeping bag was born. It uses silica gel as the main raw material and is bonded with food-grade fresh-keeping bag glue. It has good sealing and fresh-keeping performance. It can be refrigerated and microwave-heated. The lunch box can be used as a shopping bag to go to the supermarket. It can be reused many times. Therefore, it is deeply loved by middle-aged and young people.

Why are silicone fresh-keeping bags so popular? The most important thing in storing food is health and safety. Silica gel is a high-grade active adsorption material, non-toxic, odorless, and very flexible, while food-grade fresh-keeping bag glue must meet FDA and LFGB certification. The fresh-keeping bag can withstand a high temperature of 218°C and can be boiled. Put some vegetables in the storage bag and cook slowly in the pot, which not only maintains the relative freshness of the vegetables, but also achieves the cooking of the dishes, which can be described as killing two birds with one stone. This is also the unique advantage of this bag. Of course, microwave heating is not a problem. It can be rotated in the microwave oven to lock the moisture of the food and maintain the pure taste of the food, and there is no peculiar smell after heating. Compared with ordinary disposable plastic fresh-keeping bags, it can be washed and used repeatedly, and it can also be put in the dishwasher. The operation is simple, economical and environmentally friendly! Therefore, safety, environmental protection, hygiene, durability and other requirements have been met, and it will be so popular among the people.

The silicone fresh-keeping bag has another mission, to build a plastic-free green earth!

We all know that plastic, as a non-renewable material, is difficult to decompose and will cause global warming and widespread pollution.

It takes at least 500 years for a plastic bag to decompose in the landfill.

If as long as 3% of the world’s population use silicone fresh-keeping storage bags, 219,000,000 plastic bags can be saved every day to contaminate the land!

Whether it is breakfast sandwiches, delicious snacks and snacks that you want to bring to the company on weekdays, or tempting biscuits, various nuts, and fresh cut fruits for a weekend picnic, you can put them in the storage bag. Keep fresh while not afraid of squeezing or scattering, safe and healthy, and unlimited joy.

Can you refuse such a practical silicone fresh-keeping bag?

  Hunan Zekun Packaging Technology Co., Ltd., established in 2015, is a professional modern automation enterprise in the research, development, sale and service of Flexible Plastic food Packages, plastic film roll, zip lock bag, stand up bag, Retort package and spout bag, we using High-end printing inks imported and 100% virgin exclusive formulation material, such as PE, PET, PP, OPP, AL, VMPET, as raw material etc…We are located in Hunan Province. Our company covers an area of 31000 square meters. About equipment, We own modern advanced production equipment, such as computer high-speed 9 colors printing machine with 1.3 meters maximum printing width; Widen large lamination machine; Electric eye folding machine; Full-automatic computer bag-making machine; What is more, we have many years experience in manufacturing plastic packaging bags. Dedicated to strict quality control and thoughtful customer services, we have excellent team who focus on product development & design, quality control & inspection and company operating. In order to supply the best products and services, we have built a modern quality management system which is in strict accordance with international standards. We have exported to all over the world market such as: U. S, U. K, Australia, Canada, Russian, Germany and most of America, Europe, Asia, Middle East countries We are glad to work together with you and finally bring you the satisfied products with common success.

Packaging requirements and storage methods of dried nut products

The shelf life of dry products is greatly affected by packaging, because once the packaging materials or packaging containers are unreasonable, it is easy to cause moisture regain or even agglomeration and mold growth of the dry products, resulting in unnecessary losses. The packaging of dry products should meet the following requirements:

(1) It can prevent the invasion of outside air, dust, insects, rodents, microorganisms, and odors.

(2) Do not penetrate outside light or avoid light.

(3) It has the characteristics of durability and firmness during storage, handling and sales. The packaging container will not be damaged under the conditions of falling from high altitude, high temperature and high humidity, immersion and rain.

(4) The size, shape and appearance of the packaging should be conducive to merchandise sales.

(5) Packaging materials in contact with food should meet food hygiene requirements, be non-toxic and harmless, and will not cause food denaturation or deterioration.

(6) Packaging costs should be low and reasonable.

The preservation of dry products is closely related to food composition, texture, and condition control of the drying process, and packaging containers are also critical to the transportation and storage of dry products.

Cartons and cartons are commonly used packaging containers for dry products, and there are also paper bags, paper cans and other packaging. Most dry products are packed in cartons and lined with moisture-proof packaging materials, such as waxed paper, parchment paper, and heat-sealable high-density polyethylene plastic bags. The cartons are usually color-printed paper, waxed paper, and fibers that can be tightly attached to the box. Film or aluminum foil is used as the outer packaging.

Dry products are often packaged in cellophane, coated cellophane bags, plastic film bags and composite film bags. The use of film materials for packaging occupies a small volume and light weight, and it can be used for vacuum or inert gas packaging. For fragile dry products, inflatable packaging can prevent the dry products from being damaged by pressure during transportation and storage or the packaging bags are pierced by hard dry products, and the packaging loses relevant functions. The aluminum foil in the composite film has the characteristics of being impermeable to light, moisture and oxygen.

Metal cans are ideal containers for packaging dry products. It has the characteristics of sealing, moisture-proof, insect-proof, firmness and durability, and can avoid rupture in a vacuum state, and can protect the dry product from being squeezed by external forces and maintain the original shape.

Glass bottles have high chemical stability, are insect-proof and moisture-proof containers, and some can be vacuum packed. The glass bottle packaging is transparent, allowing you to see the contents, and protect the dried products from being crushed. It can also be processed into brown to avoid light, can be recycled and reused, and can be made into a certain design shape. But glass bottles are easy to break and are heavy.

Talking about the packaging container of candy and chocolate

The role of packaging in candy and chocolate

1. Protect the product’s due luster, fragrance, shape, and extend shelf life

It is very important for candies and chocolate to maintain their proper appearance within a certain period of time. For example, fruit hard candy should have good transparency and corresponding fruit aroma, and the surface of chocolate should have good brightness and cocoa aroma. These qualities are maintained very well. To a large extent depends on the packaging form, packaging material and packaging effectiveness.

All kinds of candies contain different amounts of reducing sugar. This reducing sugar has the property of easily absorbing moisture in the air. Therefore, the candies will absorb moisture to varying degrees in a humid environment. Once the candies absorb moisture After that, it will become sticky (fashang in technical terms) and lose its due transparency.

Chocolate products are heat-sensitive foods and also high-fat products. Therefore, when the indoor temperature exceeds 25°C and reaches 30°C, the product begins to soften. This phenomenon is that some of the low-melting fat contained in the chocolate begins to melt, and the melted fat will migrate to the surface of the chocolate. The migrated fat will not only make the chocolate become It is soft and will make the surface dull, and severely make the product surface blooming and white; in addition, in a humid environment, the sugar contained in the chocolate will also absorb moisture and deliquescence, and the deliquescent sugar will cause the product to become sticky.

2. Prevent microbial and dust pollution, improve product hygiene and safety

Chocolate products are high-protein foods. It is especially important to prevent microbial contamination of praline fillings or brownie products, because protein and the nutrients in chocolate are excellent microbial culture media. If these products are contaminated by bacteria, they should be stored in storage. In the process, it will accelerate the speed of product worms and deterioration, resulting in the loss of commodity value. Therefore, tight packaging can avoid microbial contamination and ensure product hygiene and safety.

3. Exquisite product packaging can increase consumers’ desire to buy and the value of goods

Commodity quality, price, and packaging are the three main factors in market commodity competition. And the packaging design is an important one in the road to the market. Because of the distinctive product packaging design, it will give people a strong visual effect on the shelf and increase consumers’ desire to buy. Therefore, good food must have the three main factors of product quality, price, and packaging, so as to increase the value of the product. From the above points, it can be seen that packaging plays an important role in the quality, hygiene, and price life of candy and chocolate products. Good products must have exquisite and beautiful packaging.

Candy packaging

The traditional candy packaging is wrapped in wax paper. Later, it is gradually changed to cellophane wrapping. Now it is mostly wrapped in plastic film. Plastic film has good moisture resistance, high tensile strength, low price, abundant sources, diverse varieties, good mechanical adaptability, and is suitable for high-speed automated packaging. Commonly used films include HDPE, OPP, BOPP and aluminum foil/PE.

Confectionery packaging has various wrapping forms such as twisted, folded and seamed. Seam wrapping, also known as pillow wrapping, is an advanced candy packaging technology developed in recent years. It is characterized by heat-sealing, good air-tightness, and moisture-proof and moisture-proof for a long time. , Preserving fragrance, its shelf life is greatly improved, and the packaging form is novel, which can save packaging materials.

General candy packaging needs to be printed and decorated, supplemented by exquisite patterns, to enhance the commodity value and attractiveness of the candy. Traditional candy printing is on the reverse side of the wrapping paper. When there is no inner wrapping paper on the candy block or the wrapping paper is skewed and loose, the printing ink will directly contact the candy and cause the ink and residual solvent to contaminate the candy. Therefore, this printing method is not acceptable. Taken. According to food hygiene requirements, after printing, packaging materials are coated with a layer of polyethylene on the printing surface to ensure that the candy packaging is non-toxic, hygienic and the printing decoration is exquisite and bright. The packaging film made by this method can be used on an automatic packaging machine, and can be heat-sealed, moisture-proof and gas-barrier, so it can prolong the shelf life of the candy.

Candies can be packaged in simple packaging, bag packaging, box packaging, metal cans, plastic cans, and paper-plastic combination cans.

Chocolate packaging

1.Basic characteristics of chocolate

Chocolate is made of cocoa products (cocoa mass, cocoa powder, cocoa butter), sugar, dairy products, spices and surfactants as basic raw materials, and undergoes scientific processing such as mixing, fine grinding, refining, temperature adjustment, and molding. , Has a unique color, aroma, taste and fine texture, exquisite, preservation-resistant, high-calorie sweet and solid food.

2. Chocolate requirements for packaging

Chocolate is made from raw materials such as cocoa liquor, cocoa powder, cocoa butter, white sugar, dairy products and food additives, which are processed through processes such as mixing, grinding, scouring, tempering, casting, and freezing. The dispersing system of chocolate uses fats and oils as the dispersing medium, all solid components are dispersed between the fats and oils, and the continuous phase of the fats and oils becomes the skeleton of the physique. The main component of chocolate, cocoa butter, has a melting point of about 33°C. Therefore, chocolate will gradually soften when the temperature reaches 28°C, and gradually melt into a slurry above 35°C. The surface quality of chocolate is also greatly affected by ambient temperature and humidity. When the temperature gradually rises from 25°C to above 30°C, the gloss of the chocolate surface begins to dim and disappear, or when the relative humidity is quite high, the gloss of the chocolate surface will also be dim. And disappear. At the same time, if chocolate is packaged or stored improperly, there will be phenomena such as blooming, whitening, oil leakage and insects. In addition, chocolate also has the characteristics of being easy to absorb the odor of other items, some chocolate products will also have a scent, and the shelf life is not synchronized. Therefore, chocolate has relatively high requirements for packaging. It not only requires the packaging to have good basic properties such as water and gas resistance, temperature and melting resistance, light protection, rancidity resistance, dialysis resistance, mildew resistance, insect resistance, and pollution prevention, and it can also be used for a long time. Maintain the color, aroma, taste and shape of chocolate candies.In addition, with the needs of market competition, packaging requires unique forms of expression (including materials, shapes and designs, etc.), rich and colorful content (showing product form, features, and connotation, etc.) and value-added functions to promote products. Sales and increase the added value of products.

3. Commonly used chocolate packaging materials

(1) Paper products. Paper product packaging is a world-recognized non-polluting and environmentally friendly material, but due to its own characteristics, it is generally used for outer packaging, display packaging, display packaging and transportation packaging. Chocolate paper packaging involves coated paper, white cardboard, grayboard, boxboard and corrugated paper. The proportion of high value-added functional papers such as water resistance, oil resistance, acid resistance, deodorization, and wafer paper is gradually increasing.

(2) Tin foil packaging. This is a type of traditional packaging material. Because of its good barrier properties and ductility, it has always occupied a place in the current chocolate packaging. However, it is affected by factors such as production technology, production efficiency, application limitations, and price, and is affected by packaging such as plastics. Great impact.

(3) Plastic flexible packaging. Plastic packaging has gradually become one of the most important packaging materials for chocolate due to its rich functions and diverse display power. With the maturity of technology, cold-seal soft bags have gradually become the most important part of chocolate due to their high packaging speed, low odor, no pollution, easy tearing, etc., and can avoid the impact of high temperature during the chocolate packaging process. Packaging Materials.

(4) Composite materials. Due to the composite characteristics of multiple materials and obvious protective display capabilities, composite materials are easy to obtain materials, simple to process, strong composite layers, and low consumption, and gradually become a commonly used packaging material in chocolate and candies. Most of the composite materials are based on flexible packaging. Currently, commonly used materials include paper-plastic composite, aluminum-plastic composite, and paper-aluminum composite.

(5) Container packaging. Container packaging is also one of the most common packaging methods in chocolate packaging. It mainly has the advantages of excellent protective performance, sophisticated production, unique display effect and reusability. At present, the common container packaging on the market is nothing more than plastic (injection molding, blow molding, blister molding), metal (tinplate cans, aluminum cans), glass and paper (mounted boxes) four categories, in order to pursue the differentiation of product display, Containers such as leather boxes, wooden boxes and composite materials that do not often contain food are also appearing on the market. In addition, ceramic materials can fully express culture and art, and there have been cases in the market that use ceramics to make high-end chocolate packaging containers.

Analyze the characteristics and applications of four-side sealing bags

The four-side sealing bag contains four sealing edges, which are like two pieces of film facing together to seal the four sides. This is the source of the four-side sealing bag.

1. Features of the four-side sealing bag:

(1) The product has a good appearance and three-dimensional effect. The product is packed in a cube shape, which can be used for food preservation, and it can be recycled many times to make full use of the packaging bag space.

(2) The unique four-side sealing bag design can effectively prevent bursting. The new printing process highlights the pattern design and trademark effect. Special trademarks or patterns can be designed to have a good anti-counterfeiting effect.

(3) It can highlight the high-grade and distinctive shelf effects of products.

(4) It has a wide variety of styles, and is resistant to cooking, moisture-proof, good vacuum effect, low oxygen permeability, high sealing performance and good heat sealing performance.

(5) Strong resistance to irritation, prevent external lines, especially anti-static, etc., which effectively protect the product from damage caused by the external environment, and extend the shelf life.

2. The main products of four-side sealing bags include:

(1) OPP, CPP, PET, nylon, aluminized and other composite bags;

(2) Blank or multi-color sling bags, self-adhesive bags such as OPP, CPE, PP, PE, PP;

(3) Courier bags of various sizes, such as PE, PP, PO, OPP, CPP, etc., flat pocket organ bags;

(4) A series of design and manufacture of PVC handle bags, zipper bags, environmental protection bags, etc.

3. The scope of application of products with four-side sealing bags:

Four-side-sealed bags are usually used in developing countries such as Central and South Asia. They are mainly used for powdered food, dried fruits and tea. The food that needs to be stored is put in the bag. Some foods require the air to be exhausted, so as to be hygienic, environmentally friendly and extendable. The shelf life and other functions are widely used in snack food packaging, powder food packaging, and food production enterprise packaging.

There is still a big difference between a four-side seal bag and a three-side seal bag in the usual sense, but the origin of such a product naming can be simply understood from the literal sense. Not only that, in terms of application, there is not so much difference between the two products. Like a three-sided sealing bag, it can also be applied to food bags and cosmetic packaging. The two still have the same place in this respect. For more information about the four-side sealing bag, please consult Zekun Packaging: https://www.zekunpackaging.net

Emails: Dreamzekunpackaging@gmail.com Whatsapp 008613926043818

Packaging bag printing price calculation method

How to calculate the printing price of packaging bags?

1. First of all, you need to know what material your packaging bag is made of and how many layers of materials are it made of?

2. Then determine the width, height and thickness of the packaging bag. If you need to customize a three-side-sealed dried fruit packaging bag with a weight of about 80g, I suggest you use a food packaging bag of about 8c (c is the thickness unit, 1c=0.01mm ).

3. Then the printing price of the food bag can be calculated more clearly.

Price = first layer material (length * width * thickness * unit price of material) + second material (length * width * thickness * unit price of material) + third material (length * width * thickness * unit price of material) + Consumed ink price + consumed glue price + labor cost + manufacturer profit

The price of the packaging bag is determined according to different materials. For details, please consult Zekun Packaging Customer Service.

Remember, the price calculation method is different for each type of bag, but the general idea is that the price is also related to the typesetting. Therefore, the price is still determined by professionals. Come calculate it for you as well.

Out-of-the-ordinary shaped bags

The special-shaped bag is not a regular boxy bag, but an irregular shape. Special-shaped bags have excellent shelf attractiveness due to their changeable shapes, and are a popular packaging form in foreign markets. With the improvement of people’s quality of life, special-shaped bags have gradually become one of the means for Chinese commodity manufacturers to increase brand awareness and increase product selling points.

The special-shaped bag breaks through the shackles of the traditional square bag, turning the straight edge of the bag into a curved edge, reflecting different design styles, and has the characteristics of novel, simple, clear, easy to identify, and prominent brand image. Compared with ordinary packaging, special-shaped bags are more attractive, product information is clear, and promotional effects are very obvious, and application functions such as zippers, portable holes, and mouths can be added arbitrarily to make the packaging more convenient and more user-friendly.

1. The advantages of special-shaped bags

Special-shaped bag is a kind of irregular packaging bag, divided into middle seal, four-side seal, three-side seal, etc. It breaks the impression that people feel that the packaging bag is square, novel, easy to identify, and can more intuitively highlight product features, such as The fruit slices designed into the corresponding shape allow people to understand the product information at a glance. Compared with traditional bottled packaging, it is more energy-saving and environmentally friendly, and can save storage costs and transportation costs. These advantages of special-shaped bags make them widely used in food, daily chemicals, toys, medicine, electronics and other fields.

2. Design considerations

1) Change in capacity. Traditionally shaped packaging bags, specifications and capacity have basically formed a fixed formula, everyone is familiar with, but after the shape of the packaging bag changes, the capacity will inevitably change, so the design process needs to recalculate the capacity according to the size of the packaging bag.

2) Soft edges. Because of the irregular shape of the bag, it will encounter sharp edges and corners. It is easy to puncture other packaging or hurt the user during storage and use. Therefore, the edge of the special-shaped bag should be as soft as possible to avoid sharp corners

3) Pay attention to sealing. Ordinary packaging bags are simple to seal because they are horizontal and vertical, but special-shaped bags have a line feel. When heat-sealing, you need to carefully set heat-sealing related parameters according to the opening direction, line shape, and sealing position of the special-shaped bag.

3. Special-shaped bag type

1) special-shaped bag nozzle bag. Generally, a special-shaped bag will add a suction nozzle, mainly to facilitate the dumping of the contents inside, and can be resealed after use, which is convenient for multiple use. Special-shaped bag nozzle bags are mainly used in liquid packaging, such as beverages, jelly, tomato sauce, salad dressing, shower gel, shampoo, etc.

2) special-shaped bags with zipper bags. The special-shaped bag zipper bag adds a zipper at the bottom of the bag opening, which is convenient for multiple unsealing. Zipper bags are also convenient for food preservation and multiple use, but are not suitable for liquids, and are more suitable for lighter dry items such as chocolate, biscuits, tea, dried fruits, candies, etc.

3) shaped bag imitating mouth bag. The imitation mouth bag means that the bag does not have a mouthpiece, but in the design process, the opening part of the bag is designed to resemble a mouth shape. The purpose of this kind of bag is basically the same as that of the special-shaped spout bag. It is also mainly used for liquid packaging, but because it cannot be sealed once it is opened, it is mostly used for liquid replenishment bags or bags with smaller specifications.

Tea packaging materials and packaging methods, what packaging method is the preferred method of tea packaging?

The packaging of tea is indispensable in tea storage, quality preservation, transportation and sales. Unreasonable or imperfect packaging tends to accelerate the loss of tea color and fragrance; good packaging can not only reduce the loss of quality of tea from production to sales, but also have a good advertising effect, and it is also a realization An important means of tea commodity value and use value.

The materials of tea packaging are:

1. PE bag (plastic bag)

Polyethylene bags, or PE bags, are currently widely used packaging materials. Generally, there are two types of low-density PE bags and high-density PE bags. Low-density PE bags have greater moisture permeability and air permeability, and high-density PE bags are smaller.

The advantages of PE bags are economy, cheapness, and good moisture resistance. The disadvantages are that they have poor light transmission and gas resistance and cannot be individually used for tea packaging. It is best to use polyethylene bags to add a layer of external packaging that can block light and have low air permeability, such as synthetic paper cans, iron cans, etc.: PE bags have greater air permeability and it is difficult to solve the oxygen problem in the packaging bag, which is not ideal The packaging material.

2. Metal tin cans

The advantages of metal tin cans are extrusion resistance and good texture. In the early days, they were mainly used for the outer packaging of tea with PE bags. However, due to their high price and easy corrosion and deformation, they have been gradually eliminated. The paint smell inside the metal tin and the tightness of the lid is not enough, so it is not suitable to be used alone.

3. Synthetic paper cans

Synthetic paper cans are currently the most widely used packaging materials. It has the advantages of economy, lightness, and beauty. Only air and moisture permeability are still high, and it is not suitable to be used alone. It is best to use PE bags or aluminum foil laminated bags for inner packaging.

4. Aluminum foil laminated bag

The aluminum foil laminated bag is beautiful and elegant, and its advantages are that it is opaque, moisture-proof and oxygen-resistant, but the price is more expensive than the PE bag, and it will also cause extrusion problems when used alone. The aluminum foil laminated bag can be treated with vacuum or nitrogen or deoxidizer. With packaging cartons or synthetic paper cans, the storage of tea leaves can be completely protected from moisture, gas, light, and oxygen. Storage at low temperatures is the best solution for tea. Perfect preservation method.

5. Glass jars, magnetic jars, wooden boxes, paper boxes

Although glass jars have excellent gas and moisture resistance, they are transparent, fragile, heavy and expensive. Magnetic pots or earthenware pots can be protected from light but are similar to glass pots. They are fragile and heavy. Improper handling of wooden boxes can easily cause tea to absorb peculiar smell and moisture and breathe. Boxes or paper bags are easy to absorb moisture and break. These materials are not ideal tea packaging materials. .

6. Nitrogen filling or vacuum packaging

Vacuum packaging is due to shrinkage of the packaging bag. In order to avoid re-squeezing and collision and for the sake of beauty, external packaging protection should be added. Nitrogen-filled packaging will expand the bag, and it should not be squeezed to avoid bursting the bag. Both require additional packaging, and the preservation also has a good effect, but the investment is more expensive.

With the development of the material industry, tea packaging materials have undergone great changes. The new generation of packaging has been greatly improved in methods and methods. For example, in recent years, the emergence of multilayer composite materials has made the nitrogen-filled packaging of tea leaves a practical and popular stage, and its cost and use are more convenient than the original iron cans. Much. At present, most of the new films used in tea packaging have good gas barrier properties, which can better prevent the intrusion of water vapor and the escape of tea aroma in the packaging bag, and have excellent processing performance, convenient heat sealing, random modeling, and certain machinery. The strength and resistance to chemical corrosion meet the hygienic standards of packaged food. Although the cost of composite film is relatively high, it is indeed an excellent packaging material.

Packing with aeration and nitrogen filling is a new method for the storage of famous teas in recent years, and it is widely used. The method is to first dry the tea leaves until the moisture content reaches about 5%, not more than 6%, and put them in an aluminum foil composite bag, and the bag mouth is tightly sealed with a heat sealing device. Use a breathing air suction and nitrogen filling machine to extract the air in the packaging bag and fill it with pure nitrogen at the same time, seal it with a sealing sticker, and place it in a tea box for storage. Packing with suction and nitrogen filling can generally be stored for 8 months. If it is sent to a cold storage, it will still have better quality after one year.

Do you know everything about tea packaging? If you want to know more, welcome to visit Zekun Packaging Technology Co., Ltd.: https://www.zekunpackaging.net https://www.zekunpackaging.com

What are the advantages of food vacuum bags? Do you know the correct usage and precautions?

Vacuum packaging is a very popular packaging form nowadays. The air in the container is extracted to maintain a predetermined vacuum state, which can save space and is easy to carry. Vacuum packaging bags are also widely used in the market due to their own characteristics. Vacuum packaging bags are used in many industries such as the food industry, medical supplies industry, and electronic products.

Today, let’s talk about the advantages of vacuum packaging bags that are so popular.

1. After the internal air of the vacuum packaging bag is drawn, the packaging bag basically fits the packaging, that is, the internal volume ratio is small, which not only saves packaging space, but also facilitates people’s daily carrying;

2. After the vacuum packaging bag is vacuumed, the number of microorganisms is less than that of aerobic packaging, and it is not easy to breed. It can smoothly extend the shelf life of some foods such as fresh meat or medicines, which means that the vacuum packaging bag The shelf life is longer than ordinary plastic bags;

3. Vacuum packaging bags can take advantage of the barrier properties of the substrate to achieve high barrier-water barrier, oxygen barrier, and gas barrier effects;

4. Vacuum packaging bags can be moisture-proof when used in packaging of electronic products; when packaging some foods, they can be resistant to oil and aroma, or can be resistant to high-temperature cooking and low-temperature refrigeration. Reflect the versatility of vacuum packaging bags according to different packaging materials;

5. Vacuum packaging bags can use modern production technology to achieve automated large-scale process production, which will greatly save the production cost of vacuum packaging bags;

6. The vacuum packaging bag adopts non-toxic, harmless and non-polluting packaging materials, no adhesives are added during production, no solvent residue problems, and environmental protection.

It can be said that by virtue of the above-mentioned advantages of vacuum packaging bags, vacuum packaging bags are widely used in many industries such as the food industry, electronics industry, and chemical industry.

Application range of vacuum food packaging bags

In real life, vacuum packaging bags are often seen in many places. The editor summarizes the application of vacuum packaging bags in food mainly in the following aspects:

1) Cured products: sausages, ham, bacon, duck, etc.

2) Pickled vegetables: mustard, dried radish, kohlrabi, kimchi, etc.

3) Soy products: dried tofu, vegetarian chicken, bean paste, etc.

4), cooked food products: roast chicken, roast duck, sauce beef, fried food, etc.

5) Convenience food: rice, instant wet noodles, cooked vegetables, etc.

6) Soft canned food: bamboo shoots in clear water, fruits in syrup, eight-treasure porridge, etc.

Food vacuum packaging bags use the principle of deoxygenation to effectively prevent food from spoiling and maintain its color, aroma, taste and nutritional value. It is widely used in the food industry, so how to use food vacuum packaging bags correctly?

1.Precautions for storage

The gas moisture in the air is permeable to packaging materials, and the permeability coefficient is closely related to temperature. Generally, the higher the temperature, the greater the permeability coefficient, and the more serious the penetration of packaging materials. Therefore, the food packaged in vacuum packaging bags must be stored at low temperatures. If stored at high temperatures, the permeability of the packaging bags will be seriously affected and the food will deteriorate. Generally, vacuum-packaged food should be stored below 10°C.

2.Operation precautions

1). First of all, when heat sealing the food vacuum packaging bag, pay attention not to stick to the sealing part of grease, protein, food and other residues, to ensure that the sealing can be completely heat sealed.

2) For heat sterilization of vacuum-packed packaging bags, the sterilization temperature and sterilization time should be strictly controlled to avoid excessive pressure inside the packaging bag due to excessive temperature, resulting in separation and rupture of the packaging bag seal.

3). The packaging bag of food vacuum packaging must be completely evacuated, especially for the vacuum packaging of fresh meat and unshaped food, no residual gas, to prevent the residual gas from causing the food in the vacuum packaging bag to spoil and deteriorate.

3. Precautions for the scope of application

The performance of food vacuum packaging materials directly affects the storage life and taste changes of food. When performing vacuum packaging, choosing a good packaging material is the key to the success of packaging. Meat food can generally be divided into two types: refrigerated fresh meat food and normal temperature cooked meat food. Refrigerated fresh meat food is suitable for vacuum packaging bags made of nylon composite material. Nylon material can maintain its flexibility well under low temperature conditions and is easy to Use for refrigerated food. Cooked meats at room temperature require high temperature treatment and protection from light, so vacuum packaging bags made of aluminum foil are more suitable.

Products that are not suitable for food vacuum packaging are those fragile foods. If these foods have edges and corners, the packaging bags are easy to puncture and penetrate. Therefore, it is best not to use vacuum packaging for this kind of food, and use other packaging, such as inflatable vacuum packaging bags.

If you want to learn more about food vacuum bag information, please visit the hunan ze kun packaging technology co., LTD. Web site: https://www.zekunpackaging.net/ https://www.zekunpackaging.com  

Do you know the advantages and disadvantages of the beautiful and practical eight-side sealing packaging bag?

Analyzed from the name of the eight-side seal packaging bag, the eight-side seal has eight edges, four at the bottom, and two on the left and right. The advantage of this setting is that it can be unfolded on the left and right and at the bottom, which expands its use to a certain extent. space. Eight-side sealed bags are also called flat-bottomed bags, square bags, folded-edge bags, and three-dimensional bags. Because the bottom of the finished product is flat, the four edges can make the packaging more stable and “stand up” and have more adhesion! On the side of the package, it can be unfolded to increase the internal volume of the package, and the effect of a transparent window can be designed on the side. Of course, it is not necessary to have the effect of a transparent window! The square bag is named because the side of the eight-side seal packaging bag is unfolded, which is similar to the unfolding process at the bottom, and the specifications are the same, so it is also called the square bag! The composite packaging bag has been deeply integrated into our lives. The eight-side sealing bag in the composite packaging bag is even more popular. So what are the disadvantages and advantages of the exquisite eight-side sealing bag? Let’s take a look at it together!

Eight advantages of the eight-side sealing bag:

1. Stand steadily, which is conducive to shelf display and deeply attracts consumers’ attention;

2. There are a total of eight printed pages, with enough places to describe product or language product sales, and global sales of products are promoted for use. Product information display is more complete;

3. Because the bottom of the bag is flat and open, lay the bag flat, and the bottom is a good display layout;

4. The eight-sided sealing pen stands upright, which is conducive to the soft display of the brand;

5. The flexible packaging composite technology has many changes in materials. According to the thickness of the material, the barrier properties of water and oxygen, the metal effect and the printing effect, the benefits are greater than that of a single box;

6. The eight-side sealing zipper bag is equipped with a reusable zipper, which is convenient to use. Consumers can reopen and close the zipper, so that the products inside are not easily damp, and the box cannot compete;

7. Unique appearance, beware of counterfeiting, easy for consumers to identify, which is conducive to brand establishment;

8. It can be printed in multiple colors, the appearance of the product is exquisite, and it has a strong promotional effect. As a popular packaging method in recent years, it has strong vitality, and there will be more demand in recent years.

Disadvantages of eight-side sealing self-supporting packaging bag

Eight-side-sealed flat-bottom zipper bags are mainly made to order. They are not available in stock and only accept orders. They are not suitable for customers with tight delivery times. There is a certain minimum order quantity, which is not suitable for customers with a small quantity.

Eight-side seal packaging bag manufacturers need to strictly control the thickness of the bag body in the production of plastic packaging bags to improve the manufacturing quality of the eight-side seal packaging bag. Its thickness mainly affects the following performance of the eight-side seal packaging bag:

1. Affect barrier properties: the thickness and uniformity of the eight-side seal packaging bag will affect the barrier properties of the bag body, and the uniform thickness can ensure the stability of the barrier.

2. Affecting tensile performance: the eight-side-sealed packaging bag with moderate thickness and uniform thickness is resistant to stretching and has good toughness contrast.

3. Affect the quality of overprinting: the thickness of the eight-side-sealed packaging bag will affect the accuracy of overprinting and the quality of overprinting during printing.

4. Influencing the heat-sealability: the heat-sealing with moderate thickness is of good quality and will not cause bad heat-sealing.

The application range of the octagonal seal is extremely wide. It can be used in many fields such as dried fruits, nuts, cute pets, and leisure food. Its design elements and quality are the key to making these “bag fans” obsessed!

The color-printed packaging bag itself has superior properties and good water and air barrier properties. In the packaging industry, it has a wide range of uses. It can be used to package food, grains, powder and other products in different forms, as well as electronic products. For perishable commodities, it can be useful to extend the shelf life and storage period. Color-printed packaging bags are light in weight and occupy a small area, which can effectively save space and reduce costs during transportation and storage. Hunan Zekun Packaging Technology Co., Ltd. specializes in custom production of food packaging bags. Welcome to visit our website for more product information.http://www.zekunpackaging.net Whatsapp:008613926043818

How many of the meanings and uses of our commonly used plastic products are represented by numbers? How many do you know?

Encyclopedia of Digital Marks on the Bottom of Plastic Bottles:

The plastic product recycling label is formulated by the relevant organizations of the plastics industry in the United States. This set of logos stamps plastic material identification codes on containers or packaging, from No. 1 to No. 7, so that people can easily join the ranks of recycling without having to bother to learn the similarities and differences of various plastic materials. Every plastic container has a small ID-a triangular symbol, usually at the bottom of the plastic container. There are numbers from 1 to 7 in the triangle. Each number represents a kind of plastic container. They are made of different materials, and there are also different contraindications.

“No. 1”: PET (polyethylene terephthalate)

Mineral water bottles and carbonated beverage bottles are made of this material, and the temperature range is: 65 degrees to minus 20 degrees. It will deform when the temperature reaches 70 degrees. If used repeatedly, it will produce carcinogens! It can be filled with room temperature water for a short time. It is not suitable for acid-alkaline beverages and exposure to the sun. It is basically a one-time use, and this material is recyclable.

“No. 2”: HDPE (High Density Polyethylene)

This material is commonly used in medicine bottles, cleaning supplies, and bath products. Because it is not easy to clean thoroughly, it is not suitable for water cups, etc. For example, the bottom of the bottle of detergent, shower gel, shampoo, etc. will be number 2. This material is resistant to high temperatures The characteristic is very strong, can heat up to 110℃, and this material is also recyclable.

“No. 3”: PVC (Polyvinyl Chloride)

We can often see this material in the building materials market. Plastic products of this material are prone to produce two toxic and harmful substances, which are commonly found in raincoats, films, and other decoration materials. At present, containers are less used for packaging food. If you use it, don’t let it get hot.

“No. 4”: LDPE (low density polyethylene)

When we often buy some fresh-keeping food, you often find that it is wrapped with a layer of cling film or plastic film. This kind of cling film or plastic film is a low-density polyethylene material, which is not strong in heat resistance. A qualified PE cling film will melt when the temperature exceeds 110°C, leaving some plastic preparations that cannot be decomposed by the human body. Therefore, it is best to remove the plastic wrap when heating food.

“No. 5”: PP (polypropylene)

Common soy milk bottles, yogurt bottles, juice drink bottles, and microwave oven-dedicated lunch boxes. The high temperature resistance of this material is very strong. The hot melt phenomenon occurs when the temperature exceeds 130℃. It is the only plastic box that can be put into the microwave oven. It should be noted that some microwave lunch boxes are made of No. 5 PP, but the lid is made of No. 1 PE. Because PE cannot be used It is subject to high temperature, so it cannot be put into the microwave oven together with the box. It can be reused after careful cleaning.

“No. 6”: PS (Polystyrene)

The instant noodle boxes and fast food boxes we use are made of polystyrene. They cannot be heated in a microwave oven, nor can they be used to contain strong acids (such as orange juice) and strong alkaline substances. Otherwise, harmful chemicals will be decomposed.

“No. 7”: PC and other categories

PC is a material that is used in large quantities. It is mostly used to make milk bottles, space cups, etc. It is the safest plastic and can be used repeatedly and multiple times. However, it has been controversial because it contains bisphenol A, which is harmful to health.

Remind:

  Plastic products are not suitable for multiple drinks

Insiders reminded that for plastic products, it is best to use it only once. Although these items can be recycled, they are not re-used for beverages, but to make lower-level items that do not come into direct contact with the human body. In addition to cup lids, some plastic beverage bottles on the market, if used repeatedly for a long time, will age, deform, and easily breed bacteria, which is not good for health.

The editor thinks that whether you drink water or eat, it is recommended to choose glass or ceramic products.

Ze Kun takes everyone to understand the aluminum foil bag and its characteristics

Aluminum foil bag refers to a type of composite bag containing aluminum foil in the composite bag. According to the unique properties of aluminum, aluminum and other high barrier materials are used to dry composite to make aluminum foil bag products. The main film substrates of the composite bag are: the outer layer of printable film BOPA BOPET BOPP, the inner layer of heat-sealable film CPP PE, and the co-extruded film. AL (aluminum foil) is also one of them. It is usually used as the middle layer. These materials are combined into a composite film by glue according to requirements!

The common structures of aluminum foil bags are: PET/PA/PE or CPP PET/AL/CPP PA/AL/CPP PET/PA0/ AL/CPP

The basic features are: PE is suitable for low temperature use, CPP is suitable for high temperature cooking, PA is to increase physical strength and puncture resistance, AL aluminum foil is to increase barrier performance, and shading is generally used as the middle layer of PET to increase mechanical strength and stiff. Then according to the needs, combination, various properties, there are also transparent, in order to increase the barrier [oxygen barrier and moisture barrier] can use water-resistant PVA high barrier coating.

What are the main characteristics of aluminum foil bags?

1. In terms of appearance: food aluminum foil bags are light in weight, have metallic luster, good light resistance, and have high reflectivity to heat and light. Metallic luster and reflectivity can improve the brightness of printed colors; aluminum foil bags have cooked food packaging It has the advantages of high barrier performance, strong oxidation resistance, and waterproof and moisture-proof.

2. In terms of performance: good insulation, strong protection, impermeable to air and water vapor, prevent the contents from absorbing moisture and vaporizing, and are not susceptible to bacteria and insects. Herein: cooked food products are prone to spoilage. The aluminum foil bag can withstand high temperature, extend the shelf life of cooked food, and protect from light. Therefore, it is just right to use aluminum foil bag to package cooked food products.

3. Aluminum foil bags are easy to process, can be printed, color difference, embossing, surface coating, gluing and painting, etc., but they cannot be stressed, have no alkalinity, have pinholes and are easy to wrinkle, so they are generally It is not used alone. It is usually processed into composite materials with paper and plastic film, which overcomes the shortcomings of non-sealed alkali, and its advantages such as insulation have also been fully utilized. Therefore, food aluminum foil bags are more and more important in the packaging industry in life. . The aluminum foil bag can also protect the food stored in the packaging bag from squeezing, impact, vibration, temperature difference and other external physical factors.

4. Partially aluminized by shielding or elution, any pattern and any transparent window can be obtained, so that customers can see the contents of the package. This is a major advancement in the production technology of aluminum foil bags, and it is also a significant feature of aluminum foil bags.

Is the aluminum foil bag easy to oxidize when exposed to the air for a long time?

The oxidation of the aluminum foil bag will not only reduce its quality, some will also generate heat during the oxidation process, spontaneous combustion occurs, and some accidents will occur.

The chemical oxidation of aluminum foil bags means that the aluminum foil bags come into contact with oxygen in the air or oxygen released by other substances, and the chemical changes that combine with oxygen occur. These products will discolor or harden when exposed to sunlight for a long time, which is the result of the oxidation of the aluminum foil bag. There are many products that are prone to oxidation, such as some chemical raw materials, fiber products, rubber products, oil products, and fiber fabrics such as cotton, linen, and silk.

Generally, when exposed to the air, grease-based aluminum foil bags will oxidize spontaneously, changing their properties and breath. This kind of oxidation is generally carried out in the manner of auto-oxidation, that is, in a three-stage chain reaction of initiation, propagation and termination. Even adding antioxidants cannot prevent oxidation, but can only delay the induction period of the reaction and reduce the reaction speed.

If you have other questions about aluminum foil bags, welcome to visit our website:https://www.zekunpackaging.net

Explore the mystery of the self-supporting spout bag. Did you know that there are so many advantages of the spout bag?

Today we come to know another kind of packaging bag-self-supporting spout bag

The stand-up pouch originated from the French company Thimonier. In 1963, Mr. M. Louis Doyen, the CEO of France’s Thimonier company, successfully applied for a self-supporting pouch patent, which was widely recognized in the US market in the 1990s. Popularize in the world.

Doypack refers to a flexible packaging bag with a horizontal support structure at the bottom and a nozzle on the top or side; the structure is mainly divided into two parts: the nozzle and the self-supporting bag. The stand-up pouch is identical in structure to the ordinary four-sealed stand-up pouch, but composite materials are generally used to meet the packaging requirements of different contents. The nozzle part can be regarded as a general bag mouth hot straw. The two parts are tightly combined to form a beverage package that supports smoking, and because it is a flexible package, there is no difficulty in smoking, and the content is not easy to shake after sealing, which is a very ideal new beverage package.

 Advantages of self-supporting spout bag:

1. Strong and firm, tensile and abrasion resistant;

2. It has good airtightness, can effectively avoid light and moisture, and extend the shelf life of the product

3. Exquisite printing, improve product quality and strengthen the visual effect of shelves

4. The bag has strong heat sealing fastness, pressure resistance, drop resistance, not easy to break and leak. Can replace the bottle to use, save costs for you, and improve the competitiveness of the product in the market.

5. With suction nozzle and zipper, it can be used repeatedly, with strong sealing, easy to store, suitable for manual and automatic filling and sealing

6. Effectively reduce the volume, more convenient to carry, and convenient to use.

The advantages of the spout bag make it a unique advantage in the packaging of juice, dairy products, health drinks, and jelly foods. Self-supporting nozzle bag packaging is mainly used in juice drinks, sports drinks, bottled drinking water, smokable jelly, condiments and other products. In addition to the food industry, some products such as detergents, daily cosmetics, and medical supplies are also used. Gradually increase. The self-supporting spout bag is more convenient for pouring or sucking the contents, and can be re-closed and reopened at the same time. It can be considered as a combination of the self-supporting bag and the ordinary bottle mouth. This kind of self-supporting pouch is generally used in daily necessities packaging for liquid, colloidal and semi-solid products such as beverages, shower gels, shampoos, ketchup, edible oil, jelly, etc.

What is the safest and non-toxic material for the spout bag?

The special printing of liquid spout bags used for packaging milk, red wine and other liquids is a packaging method developed over the years. In addition, the development of liquid packaging bags with high temperature cooking is faster, such as right or wrong milk PE film packaging bags, etc. . So, how to judge the quality of liquid packaging film?

(1) The static and dynamic friction coefficient of the nozzle bag packaging film should be low, usually between 0.2 and 0.4, so that it can be filled in a short time on the high-speed filling and packaging machine; the friction coefficient is high and the filling speed is low. Packaging plan , The filling will be short in a short time. 

(2) The surface printing fastness of the milk packaging film should be good, it should be resistant to pasteurization and hot filling, and it should be ensured that the ink does not fall in the storage environment at -20°C. Since (1) and (2) are two mutually hostile functional requirements, ink and color masterbatch should be selected accurately for this purpose. To

(3) It has excellent heat-sealability and printability, which can fuse the bag smoothly. Assuming that the resin is too viscous in the formula, the resin melt will stick to the heat-sealing blade during heat sealing; if too much slip agent is used in the formula, the heat-sealing strength will not be high and it is easy to open the warehouse. Satisfying all three requirements is a good liquid packaging bag.

(4) It is resistant to acid, alkali and impact.  

(5) The high temperature resistant membrane must be able to survive the sterilization treatment at 121°C for 30 minutes.  

(6) The beverage spout bag must have sufficient strength and will not be torn off under the pulling force of the high-speed active filling machine. Function: It is made of non-toxic materials and has the characteristics of acid resistance, alkali resistance, abrasion resistance, good transparency, good gloss, strong anti-fouling power, non-fading, and non-fragmentation, high-temperature molding and radiation sterilization, so as to be sterile , Non-toxic and odorless. It can be used instead of bottles to save costs and advance the competitiveness of the commodity market. Add suction nozzle, reusable, strong sealing, easy to retain, suitable for craftsmanship and active filling and sealing.

Hunan Zekun Packaging Technology Co., Ltd., established in 2015, is a professional modern automation enterprise in the research, development, sale and service of Flexible Plastic food Packages, plastic film roll, zip lock bag, stand up bag, Retort package and spout bag,Welcome to visit our website:https://www.zekunpackaging.net