Tel: +86 188 2689 9458
source:other news release time:2023-05-06 Hits:
The dry composite method uses a variety of sheets or membrane materials as a substrate. Use a concave roller to apply a layer of adhesive on the surface of the substrate. Essence This is currently the most commonly used composite film production method in China. The characteristic of dry composite is that it adapts to a wide range of adhesives. Any piece of sheet or membrane can be compounded, such as PE film, PP film, PET film, PA film, etc. The composite composite strength of the dry composite method is high and the compound speed is fast, but the cost of dry compound is high. In addition, due to the amount of adhesives is generally 2.5-5 (G · m-2) (dry solid volume), there is a solvents residual and environmental environment. The pollution problem exists.
The legal process of coating is relatively simple, and it is difficult to process the obstacle resin of the film formation alone, such as PVA and PVDC, which can be composite. The melting temperature of PVC is 220 to 240 ° C, and the decomposition temperature is 200 ° C. It is necessary to add a film to the film to add plasticizers and stabilizers to increase the temperature of thermal decomposition and reduce the melting temperature. PVA is water -soluble. In actual use, the mixture of water and ethanol is used for solvents. Pleasters of 4 to 6 μm on PE or PP film on PE or PP film. Due to the poor water resistance of PVA, it can be added to the PVA solution. In order to improve its water resistance, it also improves the adhesion of PVA and PE and PP, which can save the bottom coating, for the convenience of making bags.
PE or PP membranes of PVA can be compounded with other membranes to form a composite film with PVA/PE (or PP)/LDPE structure. This membrane has a good blocking performance. The vacuum effect is more vacuum than PA/LDPE. Good, the cost is relatively low. The PVDC for coating is a climbing polymer for emulsion polymerization of chlorine polyethylene and acrylate monomers. After proper solvents and additives, coated with glass paper, BOPP, nylon, and polyester, so that it has a good obstacle The biggest problem with PVDC's use of wet gas resistance and thermal sealing performance is its safety and hygiene. It is generally believed that the monomer content should be less than 1 × 10-6.
Read recommendations:
Hitting the pain points of gift box packaging directly, three simple points make packaging customiza
The printing principle of composite bags!Snack food bag bulk Solution
Popular recommendation
Spout pouch
Wholesale Price Biodegradable Aluminum 3 Three Side Seal High Temperature Microwavable Food Retort S
Custom Special Shaped Super Pouch Aluminum Foil 1.5L 3L 5L Stand Up Drink Juice Liquid Pouch With Va
bag in box company
spout pouch manufacturers
coffee grinds pouch Manufacturing
zip lock bag for coffee wholesaler
eco friendly spout pouches price
smart spout pouch distributors
pouch with handle company
History and Briefing of Ziplock Pouch
What equipment is needed to produce plastic packaging bags
Snack food bag bulk wholesale.Learn about composite materials for food packaging bags
Material of liquid bag
When using vacuum packaging bags for food, it is inevitable to encounter difficulties. How to solve
Pet Food Bag: The Ultimate Guide
Introduction to packaging methods for containerized liquids
Pure Source: High quality liquid sealed packaging bag.juice bag in box wholesaler
What are the ingredients of raw materials for the production of degradable plastic bags?
The advantages and development prospects of aluminum foil bags
Introduction to the production of food packaging bags.smart food snack bags manufacture
How to detect the quality of composite aluminum foil bags?aluminum foil bags for grilling Manufactur
Is there a shelf life for biodegradable plastic bags?
Packaging and processing technology of bag in box.bag in box distributors
Food aluminum foil bags and vacuum packaging bags pose safety hazards.Vacuum zipper bag company
The necessity of using anti -fog packaging bags for vegetables.Flexible packaging film roll wholesal
How to classify and differentiate composite food bags.aluminum foil bags for grilling Production
Packaging bag winding packaging machine and packer
Neutral packaging precautions.bag in box for wine
How to deal with the desiccant in the packaging bag?