PVA Water Soluble Bag | POLYVA

1. Selection and preparation of water-soluble materials:
Water-soluble laundry bags usually use water-soluble polymer materials, such as polyvinyl alcohol (PVA), polyetheretherketone (PEEK), etc. During production, it is necessary to select suitable water-soluble materials and make them have good solubility and appropriate strength through chemical synthesis or modification to ensure that the bag can be effectively dissolved but not easily damaged during the washing process.

2. Film extrusion and processing:
The selected water-soluble materials are processed into films through extrusion molding technology. The thickness, strength and dissolution rate of the film need to be adjusted according to actual needs. The film is heated and cooled to achieve the appropriate hardness and flexibility. Some tensile strength enhancers or dissolution control agents may also be added at this stage to ensure that the bag can withstand a certain use pressure.

3. Cutting and sealing of bags:
During the production process, the film will be cut into appropriate sizes and the two sides of the bag will be sealed by heat pressing, heat sealing or ultrasonic sealing technology. The sealing of the bag is the key to ensure that the bag will not break during the washing process. Generally, the sealing method of the bag should effectively prevent the leakage of detergent or the exposure of clothing.

The production technology of water-soluble laundry bags is closely related to the research and development of materials. It is necessary not only to ensure the functionality of the bags, but also to take into account environmental protection and ease of use.