Typically sealing membrane is made of two or three layers of materials, such as: PET + CPP base film or PET + VMPET + CPP base film by dry complex machine once or twice a glue plus compounded, most of the stratification are due to the glue or glue with high temperature difference caused. Partly due to the complex process downtime or dry film roll changes, cause the glue drying time is not caused by recombination complex is not strong, and rolling in the production process is not timely cut off and lead to delamination during use. If leaching complex machine to complete, as long as the film is corona treated well, this phenomenon is rare, but the shower complex machines require a larger production volume. Advanced sealing film Heyu Sheng produced using a new material, temperature glue, production equipment, production of the strict control, sealing film layered phenomenon almost non-existent.
