Top-line packagingTel: +86 188 2689 9458

Top-line packagingEmail: info@toplinepackaging.com

Top-line packaging
Top-line packaging

What are the twelve structural types of commonly used packaging bag films

source:other news release time:2022-11-14 Hits:    

  

  1. Single film:

  It is required to be transparent, non-toxic, impermeable, with good heat sealing and bag making properties, heat and cold resistance, mechanical strength, grease resistance, chemical resistance and adhesion resistance. It can be prepared by extrusion blowing, extrusion tape casting, calendering, solvent tape casting and other methods.

  The heat sealing performance of the monolayer film is not only related to the relative molecular weight distribution and molecular disproportionation of the resin, but also related to the process conditions during film preparation, such as temperature, cooling rate, blowing ratio, etc.

  2. Aluminum foil:

  99.5% pure electrolytic aluminum is melted and pressed into foil by calender, which is ideal as the base material for soft plastic packaging. It has good gas barrier, water vapor barrier, light shielding, thermal conductivity and shielding.

  3. Vacuum evaporation aluminum film:

  Under high vacuum, the metal with low boiling point, such as aluminum, is melted, vaporized and stacked on the plastic film on the cooling drum to form an aluminized film with good metallic luster. When the aluminum plating thickness reaches certain requirements, the oxygen resistance and moisture resistance of the substrate can be greatly improved. The substrate shall be corona treated and coated with sol.

  4. Silicon coating:

  It is also called ceramic coating. No matter how high the temperature and humidity are, the performance will not change. It is suitable for making high-temperature cooking bags. There are two kinds of coatings: one is silicon oxide SiOx, the smaller the X is, the better the barrier is; The second is Al2O3. The coating methods include physical evaporation and chemical evaporation.

  5. Gluing (dry/wet) composite film:

  Single layer films have certain advantages as well as inherent disadvantages. They are often difficult to meet a variety of packaging performance requirements. Multiple layers of different substrates can complement each other and give full play to their comprehensive advantages.

  6. Extrusion coating composite film:

  On an extruder, thermoplastic is streamed on the paper, foil, and plastic substrate to be covered through a T-shaped die, or the extruded resin is used as the intermediate binder, and other film substrates are pressed together while hot to form a sandwich type composite film.

  In order to improve the composite fastness, it is necessary to conduct corona treatment and apply anchor paint. The extruded composite film can be reverse printed, the thickness of each layer can be precisely controlled, the residual amount of solvent is small, and the price is cheap.

  7. Co extruded composite film:

  Two or three extruders are used to use a common composite die to laminated several compatible thermoplastics to produce multilayer films or sheets. Co extruded composite film can only be printed on the front, not on the back.

  It is difficult to control the thickness of each layer compared with dry composite film and extruded cast film. No adhesive and anchor paint are used, which is pollution-free and sanitary. Co extruded composite membrane has the lowest cost.

  8. High barrier film:

  It is a multilayer structure film. It can effectively prevent the infiltration of oxygen and other gases, thus causing the propagation of microorganisms; Prevent the wrapped articles from oxidation; Prevent the outflow of fragrance, solvent, etc.

  The commonly called high barrier and high-strength materials, such as EVAL, PVDC, PET, PAN, self PA, can be made into packaging films, which can significantly extend the shelf life of food, or replace the traditional rigid packaging materials with good barrier performance.


Read recommendations:

Super pouch

Vacuum zipper bag wholesaler

zip lock bag for coffee Manufacturing

How to use food packaging bags specifically

Vacuum packaging bag can inhibit bacteria

Popular recommendation

China Factory Baby Complementary Food Spout Pouch Baby Food Fruit Puree Bag With Spout Packaging Bag

3L 5L Bag-In-Box Wine Dispenser Coffee/ Juice/ Water/ Oil Bag-In-Box With Valve

Aluminum foil bag

super pouch Factory

coffee grinds pouches distributors

spout pouch packaging bags Manufacturing

mulberry mini pouch with handle Factory

printed snack food bags Production

metallized coffee bags

Spout pouch Manufacturing

bag in box packaging Solution.Learn about children's food packaging bags

Tell you how to distinguish the material of the vacuum packaging bag

There will be several "small holes" on the top of the coffee pouch bags, so what is the my

What are the main uses of bag-in-box?

Several common coffee bag materials

What is biodegradable packaging material and how to identify it?

How to choose pet food packaging bags?

What are the aspects of food packaging?reusable Snack food bag Manufacturing

What are the special properties of aluminum foil bags explained by the manufacturer of aluminum foil

If you don't know how to identify the vacuum packaging bag, come and see.vacuum zipper bags for clot

stand up coffee bag with zipper manufacture.What is the difference between textured vacuum bags and

Explanation on Different Materials and Valves of Bags in Boxes.bag in box packaging maker

Have you used the common plastic packaging bags correctly

How to Plan Bag in Box Printing.bag in box wine dispenser

The main core research content of the sterile bag industry includes the following aspects

What is the integrity and advantage of PET FOOD BAG?petco free dog food bag maker

Packaging bag manufacturer introduces production details of Vacuum packing bags

What kinds of bags are there

What are the hazards of unqualified food packaging bags.printed snack food bags Solution

Do you know what a facial mask bag is?

Share:

Email

Wechat Whatsapp

Leave Your Message