Top-line packagingTel: +86 188 2689 9458

Top-line packagingEmail: info@toplinepackaging.com

Top-line packaging
Top-line packaging

Two composite methods of vacuum packaging bags

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:

3L 5L Bag-In-Box Wine Dispenser Coffee/ Juice/ Water/ Oil Bag-In-Box With Valve

smart spout pouch manufacturer

kraft paper spout pouch company

The common problems of self -standing bags are here, the solutions are here

What are the bag materials

Popular recommendation

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

Custom Laminated Printing Juice Bag Liquid Packaging Stand Up Plastic Water Spout Pouch

BIB Bag-in-box dispenser with butterfly valve vitop for drinking water wine juice

box-in-box wholesaler

bag in box packaging Vendor

flexible packaging houston sales

tea pouch packing machine price

pouch with handle supplier

aluminium spout pouch Vendor

kraft spout pouch Processing

Is the food vacuum packaging bag resistant to high temperature?

Tell you how to distinguish the material of the vacuum packaging bag

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

Different products have different standard requirements for composite packaging.stand up coffee pouc

What are the classifications of biodegradable plastic bags?

Main functions of vacuum packaging bag

Understand the wholesale prices of plastic packaging bags

Flexible Packaging: The Smart Future of Bag-in-Box Solutions

Customized packaging bags according to product characteristics

PET food bag wholesaler.What requirements should food packaging bags meet

Tell you how to choose a food vacuum bag.food vacuum bag

Do you know what a facial mask bag is?

What is the difference between rice vacuum bags and rice woven bags

The manufacturer of customized plastic food packaging bags tells you these points to pay attention t

Detailed introduction about food packaging bags

What does degradable plastic bag mean?

How to make zipper bag?

reusable Snack food bag price.Analyze the composition of plastic packaging bags

Dry test compound plastic flexible packaging raw materials have what advantages

What is the color printing aluminum foil bag?

Share:

Email

Wechat Whatsapp

Leave Your Message