PVA polyvinyl alcohol film is now mainly used in:
①Chemical packaging: While the waste of pesticide packaging is causing environmental pollution, it also threatens the lives of people and animals. The use of polyvinyl alcohol film packaging of pesticides will effectively for the packaging of pesticides. Bring about revolutionary changes. Like pesticides, a large number of products that need to be dissolved in water, such as: oilfield chemicals, fertilizers, cleaners, water treatment agents, detergents, concrete additives, etc., can be packaged with polyvinyl alcohol water-soluble films to reduce environmental pollution. Pollution, the purpose of improving the working environment.
② Washing packaging: High temperature water-soluble polyvinyl alcohol film packaging bags are used in hospitals to pack contaminated supplies and clothing. When disinfecting and cleaning, the packaging bags are directly put into the cleaning and disinfection equipment to reduce the contact of medical staff with contaminated medical care. Supplies, clothing, to avoid cross-infection of diseases.
③Water transfer printing: It can be used as the base film of water transfer printing materials for special-shaped surfaces of ceramics, plastics, metals, and wooden objects.
④ Embroidery : Water-soluble polyvinyl alcohol film can be used as a temporary carrier in the production process of wigs and embroidery. In terms of embroidery , as the padding material is water-soluble, the padding material will dissolve .
⑤ Textile packaging: Polyvinyl alcohol film has the characteristics of no static electricity, transparency and glossiness are superior to other films, used in textile packaging can make items more beautiful and increase their added value . At the same time, due to the high barrier property of polyvinyl alcohol film, when used in textile packaging, it can effectively block the ammonia gas in the air , prevent the ammonia gas from making the textiles yellow, and also absorb carcinogens such as formaldehyde in the textiles. Therefore, polyvinyl alcohol film is a desirable textile packaging material.
⑥Food packaging: Polyvinyl alcohol film is a material with excellent barrier properties. Using it as a barrier layer material for food packaging can greatly extend the storage period of packaged food.
⑦ Electronic and electrical product packaging: polyvinyl alcohol film has almost no static electricity, so it is especially suitable for the packaging of electronic and electrical products.
⑧Agricultural aspects: It can be used for sowing crops when raising seedlings in agriculture. Put water-soluble polyvinyl alcohol film packaging bags or packaging nets packed with plant seeds in the soil, which can prevent the seeds from being blown away due to exposure in windy and sandy areas. Or allow animals to eat, but also make plants grow according to the layout . After rainwater or moisture dissolves the water-soluble polyvinyl alcohol film, the polyvinyl alcohol distributed around the seeds improves the water retention of the soil, which is beneficial to the germination and growth of the seeds.
This article is excerpted from "Preparation of PVA Sustained Release Film and Research on Its Sustained Release Performance". The copyright belongs to the original author. If there is any infringement, please contact us immediately, and we will deal with it in time!
