In fact, a composite of other materials such as aluminum membrane, or PE and CPP film, as long as two oilysludge of tension there is no marryup, are in such a case.

• 原来，不单一的另一基材，如真空镀铝膜，或者是PE与CPP膜，只给两栽基材的不播卷不不抬力操纵配不合好，均会有这栽环境。