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Custom High Quality Pe Plastic Printing Clothing Bolsa De Correo Poly Mailing Pouch Courier Shipping Matte Mailer Packaging Bag
Product Details
Express shipping bags are made of a variety of materials, different materials for different packaging needs. The following are some common materials:
1. polyethylene (PE): including low-density polyethylene (LDPE) and high-density polyethylene (HDPE), with good flexibility, impact resistance and sealing.
2. polypropylene (PP): has high strength, rigidity and heat resistance and is suitable for courier shipments that require sturdier packaging.
3. polyvinyl chloride (PVC): good transparency and chemical resistance, but less environmentally friendly and less used.
4. polyethylene terephthalate (PET): has high strength and transparency, commonly used in express packaging that requires high transparency and strength requirements.
5. Multi-layer composites: such as PE/PP, PE/PA/PE, etc., combining the advantages of different materials to provide better physical properties and barrier properties.
6. Bi-oriented Polypropylene (BOPP): with good tensile strength, transparency and printing adaptability, it is commonly used as the printing layer of express transport bags.
7. polyvinyl alcohol (PVA): water-soluble materials, can be used for special needs of express packaging.
8. kraft paper/paper-plastic composite: kraft paper laminated with plastic film, combining the environmental friendliness of paper with the sealing properties of plastic.
9. Metallised film: a layer of metal is coated on plastic film to provide good barrier and light blocking properties.
10. Biodegradable materials: such as polylactic acid (PLA), starch-based plastics, etc., suitable for express packaging with high environmental requirements.
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