Common Plastic Packaging Materials: Introduction to Materials for Plastic Bags
Created on 03.10
Plastic packaging bags are widely used in food, cosmetics, e-commerce and other industries due to their good moisture-proof, sealing and toughness. Different materials adapt to different packaging bag needs.
- PE (Polyethylene): Soft and well-sealed, mostly used for food bags, self-sealing bags, daily necessities packaging bags.
- LDPE (Low-Density Polyethylene): Soft, moderately transparent, excellent toughness and easy to heat-seal, used for plastic wrap bags, light food bags, daily chemical sample bags, simple shopping bags.
- HDPE (High-Density Polyethylene): High hardness, strong load-bearing, tear-resistant, suitable for heavy-duty food bags, shopping bags, thick handbags, industrial packaging bags.
- PET (Polyester): High transparency, good stiffness and printing effect, used for snack bags, cosmetic bags, gift outer bags.
- OPP: Bright and stiff, not easy to deform, often used for bread bags, clothing bags, stationery bags.
- CPP: Heat-resistant and heat-sealable, used for cooked food bags, frozen food bags, inner layers of composite bags.
- Composite film: Multi-layer composite with strong barrier, used for tea bags, dry food bags, vacuum packaging bags.
- Food-grade plastic: Safe and non-toxic, meets food contact standards, suitable for all kinds of direct food packaging bags.
Choosing the right material makes packaging bags more practical, attractive and safer, adapting to different products and scenarios.
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