Tel: +86 188 2689 9458
source:Industry News release time:2023-11-13 Hits:
Generally speaking, the basic structure of composite materials is that the outer layer of composite packaging materials should be materials with high melting point, good heat resistance, less scratches and burrs, good printing function, and good optical function. Commonly used materials include paper, aluminum foil, fiberglass, polycarbonate, nylon, polyester, polypropylene, etc.
The inner layer materials should have functions such as heat sealing, good adhesion, odorless, non-toxic, oil resistant, water resistant, and chemical resistant, such as heat-resistant plastic materials such as polypropylene, polyethylene, and polyvinylidene chloride. The middle layer of composite materials with three or more layers generally uses materials with good functions such as blocking gas and moisture, and shielding light, and high mechanical strength, such as aluminum foil, polyvinylidene chloride, cellophane, paper, polyethylene, etc.
Adhesive is applied between layers for bonding. Generally, solvent based thermosetting polyurethane adhesive is used between the outer layer and the middle layer, and modified polypropylene lotion adhesive or specially modified carbonyl propylene containing resin is used between the inner layer and the middle layer. The outer layer adhesive requires high bonding strength, simple process, and low cost; The adhesive used for the inner layer requires high temperature resistance, high peel strength, non-toxic, tasteless, and does not affect the nutritional composition of the food, which can effectively maintain the color, aroma, and taste of the food.
In recent years, foreign countries have developed a uniform coating agent on the surface of the substrate film to improve the airtightness, oil resistance, and chemical stability of packaging materials, making it suitable for various food packaging. Commonly used coating agents include polyvinylidene chloride resin and polypropylene polyvinylidene chloride resin. The methods of coating include single-sided coating and double-sided coating.
Read recommendations:
Hot Sale BPA Free Plastic Drink Juice Fruit Liquid Packaging Stand Up Bag Spout Pouch
aluminium spout pouch Production
The convenience of coffee bags
pet food bag sealer Manufacturing.Snack food bag bulk Manufacturing.Food packaging bags can play a g
Popular recommendation
Custom Special Shaped Super Pouch Aluminum Foil 1.5L 3L 5L Stand Up Drink Juice Liquid Pouch With Va
125g 250g 500g 1kg Aluminum Foil Flat Bottom Coffee Bean Bags With Valve
Custom Print Side Gusset Coffee Pouch Black Matte Coffee Beans Packaging With Valve
packaging spout pouch distributors
Bag in box
biodegradable spout pouches manufacture
aluminium spout pouch wholesaler
paper snack food bag Manufacturing
eco friendly spout pouches Factory
bag in box wine supplier
Shaped Pouches: The Ultimate Guide
How to define the specifications and dimensions of packaging bags
What is the function of the hole on the coffee bag
What are the interactions between the packaging material and the object to be packaged
How long can cooked food vacuum packaging bags last?
What are the differences between polyester pet vacuum bag and nylon pa vacuum bag
Wine box packaging customization process and specific production process
Plastic packaging bag manufacturers are here to talk to you about the precautions for using plastic
Vacuum packaging bag.food vacuum bag
Bag in Box: Provide sustainable packaging for your beverages.bag in box for wine
How to judge the quality of liquid packaging bags?produce trays and packaging
Advantages of using bag in box packaging compared to traditional forms
Why nylon vacuum packaging bags are favored by the food packaging industry
What Food Vacuum Zipper Bag do you see?pint zipper vacuum bag custom
Plastic particle aluminum foil bag.aluminium foil coffee bag
How to classify and differentiate composite food bags.bag in box price
Tips for using plastic packaging bags.coffee packaging plastic bag distributors
The daily use range of plastic bags is very wide
What is easy to tear film? Which products are suitable for easy tearing film?
What are some issues to pay attention to when customizing food packaging bags?