I believe we can all think of why plastic bags are called soft bags, but the professional name of composite bags should not be understood, why is it called composite bags? In order to make the bags functional, the plastic bags produced now are at least composed of two or more layers of plastic film. Although some bags are thin, they will also have at least two layers of materials. The commonly used number of composite bags is 2-4 layers. What else can these composite bags be called? The following according to the bag type, use, materials to introduce to you.
According to bag type: R bag (flat bag / self-adhesive bag / card head self-adhesive bag / card head anti self-adhesive bag), two-sided seal, three-sided seal, three-sided bone sticking, vertical bone sticking, vertical bag (not sticking to bone), vertical mouth suction bag, middle sealed bag, medium sealed organ bag, yin-yang bag, roll film, etc.
Classified by performance and material: vacuum bag, vacuum bag, vacuum bag, aluminum foil bag, anti-static screen open bag, anti-static aluminum foil bag, etc.
Classification by function: food packaging bags, clothing packaging bags, electronic packaging bags, liquid packaging bags, etc.