To understand what material the express packaging bag
is, first we need to know what are the classifications of the express packaging bag? 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 are made of various express packaging bags. 1. Courier 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 document seal material: commonly used gray-backed whiteboard, white cardboard, and kraft cardboard. 3. Express air bubble bag material: a transparent packaging bag filled with air from the middle layer of the air cushion film. 4. Courier bone bag material: Polyethylene (LDPE) and high-pressure linear polyethylene (LLDPE) are formed by blowing film, and hot-cutting machine-made bags to make a re-sealing plastic bag, which is generally used for small food and tea packaging. . 5. Express woven bag material: polyethylene, polypropylene and other raw materials are used for packaging of goods, and are widely used in industry. The above is the answer to what material the express packaging bag is.
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