1. Polyethylene (PE)
Polyethylene is a widely used plastic material known for its lightness, durability and cost-effectiveness. It is commonly used to make shopping bags, garbage bags and food packaging bags. Polyethylene has good chemical stability, is not easily corroded, and has good waterproof properties.
2. Polypropylene (PP)
Polypropylene is a lightweight, heat-resistant plastic commonly used to make microwave food containers and some types of packaging bags. It has good chemical and heat resistance and can be used at high temperatures without releasing harmful substances.
3. Polyvinyl chloride (PVC)
Polyvinyl chloride is a hard plastic with good chemical and heat resistance. It is commonly used to make some special packaging bags, such as medical supplies packaging. However, due to the possibility of releasing harmful substances during the production and handling of PVC, its use is subject to certain restrictions.
4. Polyester (PET)
Polyester, especially polyethylene terephthalate (PET), is a very durable plastic commonly used to make beverage bottles and some types of packaging bags. PET has high transparency, heat resistance and good gas barrier properties, making it an ideal choice for food and beverage packaging.
5. Nylon (PA)
Nylon is a synthetic fiber known for its high strength and abrasion resistance. Nylon packaging bags are often used in situations where they need to withstand heavy loads, such as industrial packaging and some special-purpose bags.
6. Paper
Paper is a natural material that is biodegradable and environmentally friendly. Paper packaging bags are often used for food packaging, such as bread bags and candy bags. They have good air permeability and printability, and can provide attractive visual designs.
7. Degradable materials
With the increase in environmental awareness, degradable materials such as PLA (polylactic acid) and starch-based plastics are becoming more and more popular. These materials can decompose naturally over a certain period of time, reducing the impact on the environment. They are often used to make disposable packaging bags and food packaging.
8. Metal foil
Metal foil, such as aluminum foil, is an excellent barrier material that prevents the penetration of light, air and moisture. It is often used to make food packaging bags to keep food fresh and extend shelf life.
9. Composites
Composites are two or more different materials laminated together to achieve better performance. For example, combining plastic with paper or metal foil can create a packaging bag that is both lightweight and durable.
