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Custom High Quality PE Plastic Mailing Bags from China Suppliers - Durable, Waterproof Courier Shipping Pouches from 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:
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1. Polyethylene (PE): Including low-density polyethylene (LDPE) and high-density polyethylene (HDPE), with good flexibility, impact resistance and sealing.
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2. Polypropylene (PP): Has high strength, rigidity and heat resistance and is suitable for courier shipments that require sturdier packaging.
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3. Polyvinyl chloride (PVC): Good transparency and chemical resistance, but less environmentally friendly and less used.
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4. Polyethylene terephthalate (PET): Has high strength and transparency, commonly used in express packaging that requires high transparency and strength requirements.
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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.
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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.
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7. Polyvinyl alcohol (PVA): Water-soluble materials, can be used for special needs of express packaging.
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8. Kraft paper/paper-plastic composite: Kraft paper laminated with plastic film, combining the environmental friendliness of paper with the sealing properties of plastic.
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9. Metallised film: A layer of metal is coated on plastic film to provide good barrier and light blocking properties.
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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
Q1: What are the most durable materials for express shipping bags?
Polypropylene (PP) and high-density polyethylene (HDPE) are among the most durable options, offering high strength, rigidity, and excellent impact resistance for heavy-duty shipments.
Q2: Are there eco-friendly shipping bag options available?
Yes, we offer biodegradable materials such as polylactic acid (PLA) and starch-based plastics, as well as kraft paper composites which are more environmentally friendly.
Q3: What is the benefit of using multi-layer composite bags?
Multi-layer composites combine different materials (like PE, PP, and PA) to leverage their individual strengths, providing superior barrier properties, puncture resistance, and sealing capabilities.
Q4: Can I get transparent bags for my shipments?
Absolutely. Materials like PET (Polyethylene terephthalate) and BOPP (Bi-oriented Polypropylene) offer high transparency while maintaining excellent strength and printing quality.
Q5: What is metallised film used for in packaging?
Metallised film is a plastic film coated with a thin layer of metal. It is used to provide an exceptional barrier against light, oxygen, and moisture, protecting sensitive contents.
Q6: Are water-soluble shipping bags available for special needs?
Yes, Polyvinyl alcohol (PVA) is a water-soluble material that can be utilized for specialized express packaging requirements where solubility is a desired feature.