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:
Popular recommendation
Pouch with handle
Super pouch
China Factory Baby Complementary Food Spout Pouch Baby Food Fruit Puree Bag With Spout Packaging Bag
bag in box price
Vacuum zipper bag wholesaler
Aluminum foil bag supplier
bag in box packaging distributors
new super pouch wholesaler
clear spout pouch wholesaler
zip lock bag for coffee price
How to test the packaging bag
With the widespread use of bags in boxes, their quality has been continuously recognized.bag in box
Composition of liquid bags
Take you to analyze the wrinkle phenomenon in the zipper bag
What is the quality of degradable plastic bags?
How to use the air hole on the coffee bag
Compostable and Biodegradable Stand up Pouches -The Complete Guide
Why are water packaging bags not suitable for long-term storage?liquid spout bag
Precautions for use of degradable plastic bags
Do you know all the things in the Bag-in-box?
PEVA Freezer Bag key issues.Flexible Packaging Film Packaging
retort pouch pack Vendor.What steps need to be taken to make food packaging bags
Classification and characteristics of vacuum packaging bags.stand up coffee bag Vendor
Do you know the manufacturing process of high -temperature steaming bags?kraft paper pouch envelope
flexible packaging film properties Solution.Reasons and control measures for easy breakage of organ
packaging kraft paper pouch bag manufacture.Colorful packaging bags make your products stand out eve
The manufacturer tells you how to choose food vacuum bags.smart food snack bags wholesaler
mini pet food bag sales.How to control the thickness of food packaging bags
Talking about the main functions of plastic packaging bags.pet food bag projects manufacture
Install zipper-prone bags on the three-sided and main pockets.