PVA Film

Product Overview

Polyvinyl alcohol film, referred to as PVA film or PVOH film, is produced from polyvinyl alcohol through being dissolved, extruded, coated and dried to form a film. The finished product has a width of 1.6 meters and a thickness of 30-75 μm, with good mechanical and optical properties.

PVOH/PVA film can be used as an excellent mold release material when using unsaturated polyester, epoxy resin or other thermosetting resin to make parts. It has the following advantages:

1. Good release performance: it is not easy to produce rough embryos after stripping, saving grinding time.

2. It has high softness and smoothness, which can make PVOH film fit the mold better, and the release quality is higher.

3. Good heat resistance: it can heat up to 190 degrees.

4. Good mechanical properties: high tensile strength and high elongation

5. Suitable for continuous production, high production efficiency

Properties

1. Heat sealing performance

PVA water-soluble film is with high heat sealing performance, frequently used in the production and processing of various packaging bags. Its superior strength and elasticity is ideal for use as packaging film.

2. Adhesion

PVA water-soluble film can be pasted on non-woven fabrics and paper.

3. Printability

PVOH film allows high definition printing with gravure presses. The emergence of PVA water-soluble film breaks through the technical bottleneck of printing on curved surfaces and is used for curved surface printing.

4. Solvent resistance

PVA water-soluble film can resist most organic solvents, but is soluble in water.

5. Film formation

Effectively apply waterproof coating on the PVA water-soluble film, which can temporarily waterproof.

Can use as a binder coating.

6. Antistatic

PVA water-soluble film is hydrophilic, so it is more resistant to static electricity.

7. Gas barrier performance

Due to the hydrophilic nature of the PVA water-soluble film, it will form a barrier to oxygen, nitrogen and carbon dioxide in a low-humidity environment. This feature also helps retain scents, such as scented laundry beads.

Application

1. Packaging of powder chemicals

Powder pesticide packaging, directly put it into the sprayer to dissolve in water.

Quantitative packaging, solves the problem of precise measurement, saves labor intensity, and greatly improves the safety of operators.

For packaging various powder deodorants, disinfectants, detergents and concrete additives.

2. PVA water soluble films are used for packaging liquid chemicals and detergents. For example: laundry beads.

3. Surface printing of molded objects

Water pressure printing technology allows printing various patterns on curved surfaces, which greatly facilitates the design of developers.

4. Wig and embroidery substrates

5. Laundry bag

Using a laundry bag that can dissolve in hot water, sheets and clothing can be washed without physical contact to reduce the risk of contamination or infection. It is especially suitable for the disinfection and cleaning of hospital supplies, or the cleaning of clothes in laundromats in the event of an epidemic.

6. Agriculture:

Plastic film, greening film, afforestation, sowing, etc. Using PVA water-soluble film as a seeding film to grow crops (radish, onion, carrot, etc.) can save seeds, improve seedling rate, and save labor.

7. Golf course grass

Sprinkle grass seeds or grass seedlings on the PVA water-soluble film, then spread the film on the golf course or slope, the grass can grow evenly in their respective areas.