... chemical erosion. It can be made sofa, mattress covers, travel bags, case liner etc.4)Interliner and packing material Because of ... washable, light, convenience and easy to print any designs. Now it is made into all kinds of bags, travel bags, shopping bag ... interline for cases.Specility1. Light: Polypropylene is the main raw material; specific gravity is 0.9, is only third five, fleecy and touches well ...