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:
What are the inspection standards for food packaging bags?
Introduction to the selection of moisture-proof packaging materials for water packaging bags.Spout p
Popular recommendation
Custom Size Printed Coffee Milk Juice Wine Bib Bag-In-Box With Valve Gift Cardboard Box
Custom Print Side Gusset Coffee Pouch Black Matte Coffee Beans Packaging With Valve
Hot Sale BPA Free Plastic Drink Juice Fruit Liquid Packaging Stand Up Bag Spout Pouch
spout pouch black company
juice bag in box supplier
kraft spout pouch maker
bag in box packaging wholesale
bag in box Processing
eco friendly spout pouches sales
bag in box price
Packaging airbag inflation
The printing principle of composite bags.eco friendly spout pouches custom
Optimizing Liquid Packaging Bag Production for Efficiency and Quality
The application of vacuum in food packaging and freezing and drying industry
Bag material shelf life analysis of food packaging bags
Tell you how to distinguish the material of the vacuum packaging bag
How to determine whether the food packaging bag is regular?
How did the bag pattern come from?
History and Briefing of Ziplock Pouch
liquid pouch with spout Factory.Introduce the materials of food packaging bags
The scope of application of aluminum foil bags is wide
The production process of plastic vest bag.bag in box packaging Manufacturing
What is the production process for liquid packaging bags.stand up spout pouch manufacturers
Discussion on the Use of Fruit Juice Bags in Beverage Packaging.valve plastic coffee bag
smart food snack bags supplier.What is the reason for cutting rounded corners in snack food packagin
A major advantage of food grade vacuum packaging bags
Knowledge of PE packaging bag materials that you are not aware of.properties of flexible packaging f
Development of Food Vacuum Packaging Bag Manufacturers
What are the characteristics of the bag in the box..bag in box wine
Difference between high-temperature vacuum bag and freezing vacuum bag