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High-Quality Custom PE Plastic Courier Shipping Bags from China Suppliers | Durable Poly Mailer Factory
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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Frequently Asked Questions
What are the most common materials used for express shipping bags?
The most common materials are Polyethylene (including LDPE and HDPE) due to its excellent flexibility, impact resistance, and water-resistant sealing properties. Polypropylene (PP) is also widely used for sturdier packaging requirements.
Are there eco-friendly options available for mailing bags?
Yes, we offer biodegradable materials such as polylactic acid (PLA) and starch-based plastics, which decompose naturally and minimize environmental impact. Kraft paper-plastic composites are also a popular semi-eco option.
What is the benefit of using multi-layer composite shipping bags?
Multi-layer composites combine different materials (like PE, PP, or PA) to merge their unique properties. This provides superior physical strength, puncture resistance, and enhanced barrier properties against moisture and light.
Can these shipping bags be customized with custom printing?
Yes. Materials like Bi-oriented Polypropylene (BOPP) and Kraft paper offer excellent printing adaptability, allowing high-quality custom logos, branding, and handling instructions to be printed directly onto the bags.
Which material is best for high-strength or heavy-duty express shipping?
For heavy-duty shipments, Polypropylene (PP) and multi-layer composite films (such as PE/PA/PE) are recommended due to their high rigidity, tensile strength, and superior puncture resistance.