Top-line packagingTel: +86 188 2689 9458

Top-line packagingEmail: info@toplinepackaging.com

Top-line packaging
Top-line packaging
Top-line packaging
Top-line packaging Home  >  NEWS  >  Industry News

Snack food bag bulk wholesale.Learn about composite materials for food packaging bags

source:Industry News release time:2023-11-13 Hits:    

1-230302114454F3.png

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:

Coffee & Tea pouch

spout pouch packaging wholesale

coffee grinds pouch Solution

What are the ingredients of raw materials for the production of degradable plastic bags?

PEVA Freezer Bag key issues.Flexible Packaging Film Packaging

Popular recommendation

Eco Friendly Plastic Mylar Pouch Stand Up 50ml 100ml 200ml 250ml Custom Aluminum Spout Pouch

Custom Special Shaped Super Pouch Aluminum Foil 1.5L 3L 5L Stand Up Drink Juice Liquid Pouch With Va

Spout pouch

pouch with handle Manufacturing

spout pouch packaging price

smart spout pouch Manufacturing

pouch with handle manufacturer

spout pouch bag supplier

biodegradable spout pouches manufacture

printed flexible packaging film

In what areas is the bag-in-box industry used?

How to deal with the discoloration of food packaging bags?

Let's learn about upright bags

How to choose pet food packaging bags?

Human care in food packaging

History and Briefing of Ziplock Pouch

The design of rice packaging bags should focus on brand concept and color positioning

Guide the use of plastic packaging bags

Requirements for fertilizer packaging bags.

Bag-in-Box with Tap: The Innovative Solution for Efficient Liquid Packaging

Classification of leather packaging.Flexible Packaging Film company

Bag type

The printing principle of composite bags!

What are the advantages of liquid packaging bag manufacturers?plastic pouches for liquids

Neutral packaging precautions.bag in box for wine

Why do DOG Food Bag pursue materials?petco free dog food bag Manufacturing

Food packaging bag sanitary performance.food eco friendly packaging

The important role played by vacuum bags.Vacuum zipper bag

packaging kraft paper pouch bag manufacture.Colorful packaging bags make your products stand out eve

Tell you five specifications for inspecting plastic packaging bags.coffee packaging plastic bag

Share:

Email

Wechat Whatsapp

Leave Your Message