Tel: +86 188 2689 9458
source:other news release time:2023-04-19 Hits:
Single -layer plastic film often cannot fully meet the requirements of protecting goods, beautifying goods, and adapting to processing. So there is a more ideal packaging material with the same or different packaging materials of two or more layers of more ideals. This composite material overcomes the shortcomings of a single material and obtains the excellent performance that a single material does not have. At present, composite materials have accounted for the main position in food packaging bags.
Basic structure of composite materials:
Generally speaking, the outer material of the composite packaging materials should be high melting points, good thermal resistance, not easy to scratch, grinding hair, good printing performance, and good optical properties. Carbonate, nylon, polyester, polypropylene, etc.
The inner materials should have the performance of heat -sealing, adhesive, odorless, oil -resistant, water -resistant, water -resistant, chemical resistant and other performance, such as polypropylene, polyethylene, polytinyl chloride and other heat -resistant plastic materials.
The middle layer of composite materials above the three layers usually use materials such as obstructive gas and water and water, and high mechanical strength, such as aluminum foil, polytaline, glass paper, paper, polyethylene, etc.
The adhesive is coated between the layer and the layer. Generally, solvent -based thermosettic polyurethane adhesives are used between the outer layer and the middle material. The outer layer requires high adhesion strength, simple process, and low cost. The inner layer requires high temperature resistance, high peeling strength, and tastelessness. It does not affect the nutritional content of food, and can maintain the color and fragrance of food.
In recent years, it has developed a layer of coating agent evenly on the surface of the substrate thin film to improve the gas, oil resistance and chemical stability of the packaging materials, so that it is applicable to a variety of food packaging. Commonly used coating agents include polytatochloride resin and polypropylene-polytatrodeline. The coating method is single -sided and double -sided coating.
Read recommendations:
The source factory of packaging bags takes you to understand the three side sealing bags and the mid
Why are degradable plastic bags more expensive than ordinary plastic bags?
Popular recommendation
Custom Print Side Gusset Coffee Pouch Black Matte Coffee Beans Packaging With Valve
Custom Laminated Printing Juice Bag Liquid Packaging Stand Up Plastic Water Spout Pouch
125g 250g 500g 1kg Aluminum Foil Flat Bottom Coffee Bean Bags With Valve
pouch with handle Solution
Vacuum zipper bag Processing
juice bag in box
Flexible packaging film roll Packaging Manufacturing
bag in box packaging
tea pouch packing machine sales
refillable spout pouches
Coffee bags and coffee
Introduction to the functions, features and usage of spout bags
How to use food packaging bags specifically
What is a composite bag
Types of coffee bag
Can the use of vacuum bags ensure that the food does not get moldy?
The use of vacuum bag and the method of controlling its thickness
What are the common packaging forms of liquid beverages?
Creative design of coffee bag
When using vacuum packaging bags for food, it is inevitable to encounter difficulties. How to solve
Performance advantages of aluminum foil bags.aluminium spout pouch
BIB box bag is an outstanding packaging form for drinking water.Pouch with handle wholesale
How long can cooked food vacuum packaging bags last?
Production cost of packaging bags.pouch bag with handle Processing
The production process of liquid packaging bags.spout pouches
How to judge the authenticity of degradable plastic bags?
8 structural types of commonly used films
How to separate aluminum materials from packaging bags?
How to build a packaging bag brand?
Introduction and application of composite food bag wholesale.smart food Snack food bag Manufacturing