Bopp Tobacco film for Cigarette box packaging

BOPP film production is the polymer polypropylene melt first through the long and narrow head into sheet or thick film, and then in the special stretching machine, at a certain temperature and set speed, at the same time or step in the vertical two directions (vertical, horizontal) for stretching, And after appropriate cooling or heat treatment or special processing (such as corona, coating, etc.) made of film.