PVA water-soluble plastic film production process1

Department of PVA water-soluble film, for example, common in poly (vinyl alcohol) and starch as the main raw material, adding various additives, such as surface activity, plasticizer, adhesive and so on, its craft are different from the traditional plastic molding process. Common process is: the first material must be solid content is 15 wt % ~ 20 wt % water soluble glue, stretch film coating to mirror stainless steel belt, into the drying chamber is dry, to a certain moisture film from the steel strip on the belt, trimming winding to obtain the finished film. In principle, to solve the above problems, on the basis of the need to solve a series of technology problems, adjuvant is commonly used to solve these problems.