QB 1231-1991 (English Version) PDF

Scope: This standard specifies the technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of polyethylene blown films (hereinafter referred to as films) for liquid packaging. This standard applies to films made from low-density polyethylene resin, linear low-density polyethylene resin or their blends as the main raw materials, through blow molding, printing, and slitting. The film can be used in various types of automatic filling machines to package milk, soy milk, soy sauce, tofu, and beverages. It is not suitable for packaging vinegar and oil esters.

QB 1231-1991 history