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:
3L 5L Bag-In-Box Wine Dispenser Coffee/ Juice/ Water/ Oil Bag-In-Box With Valve
spout pouch packaging bags Factory
spout pouch packaging Manufacturing
The design of rice packaging bags should focus on brand concept and color positioning
The thickness control of vacuum packaging bag is very important
Popular recommendation
Custom Portable Reusable Drink Bags Stand Up Plastic Spout Pouches For Beverages Liquid Packaging
Custom Size Printed Coffee Milk Juice Wine Bib Bag-In-Box With Valve Gift Cardboard Box
Spout pouch
Spout pouch Vendor
packaging spout pouch
kraft spout pouch maker
bag in box packaging wholesaler
mulberry mini pouch with handle wholesale
biodegradable spout pouches Factory
spout pouch packaging maker
How did the bag pattern come from?
What is the difference between vacuum bag and aluminum foil bag
Introduction to the relevant applications of plastic vacuum packaging bags.paper snack food bag manu
Snack food bag bulk manufacture.Detailed method for customizing food packaging bags
Super Pouches: Revolutionizing Flexible Packaging for Top-Line Packaging Solutions
flexible packaging film structure wholesale.Real time strategy for packaging bags
What is the material of PE bag and what type of packaging bag can be made
How to use food packaging bags specifically
The convenience of coffee bags
Liquid packaging bag: protection fresh, convenient to carry.juice bag in box Solution
The high-quality characteristics of food composite bags play a key role in the market.biodegradable
How to classify and differentiate composite food bags.smart food Snack food bag wholesale
Performance and function of plastic packaging bags
Degradable plastic bag
Choose a common misunderstanding of condiment packaging bags.Flexible packaging film roll Manufactur
Solution to damage of plastic flexible packaging bags.aluminium retort pouch
Tell you the reasons and solutions for the deformation of the food packaging bag.PET food bag wholes
aluminum foil bags for grilling manufacturer.Moisture and anti-static aluminum foil packaging bags h
What types of packaging bags can be classified according to bag type
The difference between boiling and cooking plastic bags is so big.Biodegradable Bubble mailing bag w