Water-soluble polymer also called water-soluble resins or water-soluble polymers. The usually said water-soluble polymer is a kind of strong hydrophilic polymer material, which can be dissolved or swelled in water to form an aqueous solution or dispersion system.
As a packaging material, high-tech water-soluble plastic packaging film is widely used in the packaging of products used in water in Europe, America, Japan and other countries, such as pesticides, fertilizers, pigments, dyes, detergents, water treatment agents, mineral additives, Detergents, concrete additives, chemical reagents for photography and chemical reagents for gardening care, etc.
Its main features are:
1. Environmental protection and safety, complete degradation (up to 10%), the final products of degradation are CO2 and H2O, which can completely solve the problem of packaging waste disposal;
2. It is safe and convenient to use, avoiding direct contact with the packaged material by the user, and reduce harmful substances to the human body;
3. It can accurately measure and prevent waste;
4. Good mechanical properties, heat-sealable, high heat-seal strength;
The production process of water-soluble plastic packaging film
The high-tech water-soluble packaging film mainly uses polyvinyl alcohol and starch as the main raw materials, adding various additives, such as surfactants, plasticizers, anti-sticking agents, etc., and its process is different from the traditional plastic film forming process . Its technological process is as follows: firstly, the raw materials are made into water-soluble glue with a solid content of 18%-20%, and then salivated and coated on the mirror stainless steel belt. After drying, the film is peeled off from the steel belt, and then the drying room is carried out. After drying to the specified moisture, trimming and rewinding to obtain the finished film.
This kind of material can be make single layer bag.
For example:adhesiving sealing bag,pocket bag,mail bag.polyester bag.