The production and technical difficulties of the shell of laundry pods

The production of the outer shell of laundry pods is the most challenging part of its manufacturing process. The shell not only needs to ensure rapid dissolution, but also must have sufficient strength to prevent damage during transportation and storage.

Preparation of water-soluble thin films

Water soluble films typically use polyvinyl alcohol (PVA) as the main material, which can quickly dissolve in water without leaving any residue. The process of making this film requires very precise temperature and humidity control, as the solubility and strength of PVA material are directly affected by these factors.

Firstly, PVA needs to be mixed with other components such as plasticizers, toughening agents, etc., and dissolved into a transparent liquid by heating. Then, the liquid will be evenly coated on the mold by coating or spray. After the film is formed, it needs to be dried and cooled to ensure that it can dissolve quickly in water while maintaining appropriate strength and toughness.

technical challenges

The main technical difficulty in making water-soluble films lies in finding a balance between ensuring film solubility and strength. Excessive drying can cause the film to become fragile and easily damaged during transportation; However, excessively humid films can affect their solubility. In addition, thickness control of the film is also a key issue. Overly thick films can lead to prolonged dissolution time, while excessively thin films may not be able to withstand the pressure during production and transportation.

innovative technology

With the advancement of technology, laundry pod manufacturers continue to innovate and improve the material selection and production process of films. For example, some companies use biodegradable polymers, which not only dissolve quickly but are also environmentally friendly and meet the requirements of sustainable development.