What is the Material of the Package and What is the Classification?
In order to understand what the express packaging bags are, we must first know what the classifications of courier packing bags are.
The classification of express packaging bags mainly includes express plastic bags, express document seals, express bubble bags, express bone bags, express woven bags, etc.
The following is a brief introduction to what materials the various express packaging bags consist of.
1. Express plastic bag material: polyethylene (PE), polyethylene is divided into low density polyethylene (LDPE) and high density polyethylene (HDPE). There are two types of polyethylene express bags: (1) new material express bags; (2) recycled material express bags.
2. Courier file cover material: commonly used whiteboard paper with gray bottom, white cardboard and cow cardboard.
3. Express bubble bag material: a transparent packaging bag filled with air from the middle layer of an air cushion film.
4. Express bone bag material: Polyethylene (LDPE) and high-pressure linear polyethylene (LLDPE) are blown film molded, and eagerly cut to make a plastic bag that can be sealed repeatedly. It is generally used for small food and tea packaging.
5. Express woven bag materials: polyethylene, polypropylene and other raw materials are used for packaging goods and are very common in industry.
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