The meaning of PVA water-soluble film

PVA water-soluble film is a type of water-soluble polymer characterized by good density, high crystallinity, strong adhesion, flexible and smooth film, oil resistance, solvent resistance, wear resistance, good gas permeability, and water resistance after special treatment. It has a wide range of applications.

PVA water-soluble film is a type of water-soluble polymer characterized by good density, high crystallinity, strong adhesion, flexible and smooth film, oil resistance, solvent resistance, wear resistance, good gas permeability, and water resistance after special treatment. It has a wide range of applications.

The PVA water-soluble film produced and sold by Shanghai Yifu Packaging Products Co., Ltd. is non-toxic, odorless, and harmless to the human body. It has good affinity with the natural environment, does not accumulate, and is pollution-free.

PVA film is a green and environmentally friendly functional material mainly composed of polyvinyl alcohol, with the addition of modifiers and other additives, processed through special processes, and can be completely degraded by microorganisms in the soil. It can degrade into carbon dioxide and water in a short period of time, and has the effect of improving land.

he advantage of PVA film is its water solubility, but the disadvantage is its poor water resistance. The reason for poor water resistance is due to the presence of hydrophilic hydroxyl groups (- OH) in its molecules. If the hydroxyl group can be appropriately blocked and attached with a water-resistant group, the water resistance of PVA film can be improved. PVA contains hydroxyl groups and can undergo all typical reactions of polyols. By selecting appropriate condensed polymers, it can moderately interact with the hydroxyl groups in PVA in a small amount, forming a strong three-dimensional structure that stabilizes the airtightness of PVA under wet conditions and improves its water resistance.