1. Polyethylene (PE)

The most widely used plastic packaging material, divided into Low-Density PE (LDPE) and High-Density PE (HDPE).

• LDPE: Used for plastic wrap, food bags, garbage bags, etc., with good flexibility and toughness.
• HDPE: Used for shopping bags, plastic bottles, etc., with higher strength and heat resistance.

2. Polypropylene (PP)

Commonly used for food containers, bottle caps, toys, etc., with good heat resistance and chemical corrosion resistance.

3. Polyvinyl Chloride (PVC)

Used in building materials, medical devices, packaging materials, etc. Caution is needed due to potential health risks from plasticizers.

4. Polyethylene Terephthalate (PET)

Used for beverage bottles, food packaging, etc., with good transparency and barrier properties.

5. Polystyrene (PS)

Used for disposable tableware, foam packaging, etc. Fragile and not easily degradable, posing environmental challenges.

6. Nylon (PA, Polyamide)

Used in composite packaging bags, with high strength, puncture resistance, and oil resistance. Ideal for food packaging to preserve aroma and moisture.

7. Composite Films (e.g., CPP/PE, PET/PE)

Combines two or more plastic materials to achieve multiple excellent properties such as high transparency, high barrier, and good heat-sealing performance. Commonly used in food packaging and composite bags.