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:
Eco Friendly Plastic Mylar Pouch Stand Up 50ml 100ml 200ml 250ml Custom Aluminum Spout Pouch
kraft paper spout pouch Factory
The difference between aluminum foil bag and composite bag and vacuum packaging bag
Briefly describe the development status of the box in bag industry in China.bag in box company
Popular recommendation
Custom Laminated Printing Juice Bag Liquid Packaging Stand Up Plastic Water Spout Pouch
Custom Size Printed Coffee Milk Juice Wine Bib Bag-In-Box With Valve Gift Cardboard Box
Eco Friendly Plastic Mylar Pouch Stand Up 50ml 100ml 200ml 250ml Custom Aluminum Spout Pouch
wine bag in box sales
spout pouches company
zip lock bag for coffee supplier
pet food bag clip supplier
pouch with handle maker
coffee grinds pouches distributors
stand up spout pouch Factory
History and Briefing of Ziplock Pouch
Did you choose the right rice packaging bag?
Bag-in-box liquid packaging method
Kraft paper spout pouch bag in line with the theme of environmental protection in the world
Bag-in-Box with Tap: The Innovative Solution for Efficient Liquid Packaging
ordering flexible packaging film roll sales.The shortcomings of environmental bags
What are the aspects of food packaging?reusable Snack food bag Manufacturing
How to fold a gift box? Let the person receiving the gift feel your good intentions
aluminium spout pouch Factory.Lightweight heat preservation, Spout pouch accompanying
Material of liquid bag
High -temperature steaming bag rupture analysis
The characteristics and performance of Spout POUCHES
What is the difference between cooking bag and boiling bag
The thickness control of vacuum packaging bag is very important
The development trend of domestic food packaging.printed snack food bags distributors
Customized clothing bag
Reasons for leakage of vacuum packaging bag
Function of Packaging Bags
Why is the cooking bag called "soft can"? What are its advantages and characteristics
Material composition of degradable plastic bag