Plastic shopping bags can be found everywhere in supermarkets and shopping malls. It is essential for ordinary people to use these plastic bags in their daily life. Shopping bags are usually customized, like thousands of shopping malls and supermarkets. Because of the particularity of plastic film, mass production is required.
Customer-made plastic bags include supermarket shopping bags, clothing bags, vest bags, food bags and so on. Although they are collectively called plastic bags, their materials are different. Details are as follows.
The first is low-pressure polyethylene material, which has good tension and hardness, bright color, mainly used for making supermarket vest bags, custom shopping bags and so on.
The second is high-pressure polyethylene material, which is relatively soft, smooth surface, good elasticity, color than low-pressure materials, high brightness, is the preferred choice for most clothing bags, gift bags, its customized plastic bags are generally higher than low-pressure film materials.
Third, PVC material has high strength, corrosion resistance and non-flammability. However, in order to improve the heat resistance, toughness and ductility of plastic bags, plasticizers, stabilizers, anti-aging agents and other toxic accessories were added in the production process. Therefore, it is not suitable for food packaging. It is often used in cosmetics packaging and box packaging.
The fourth kind is polypropylene material, which has low density, strong strength and rigidity. Its hardness and heat resistance are better than those of low pressure material, but it is easy to crack, aging and wear-resistant. Therefore, it is used in garment packaging and textile packaging.
These are commonly used materials for custom plastic bags. They produce plastic bags of different quality and different uses. Of course, plastic bags of different materials should not be used together, because some materials contain toxic chemicals, such as PVC plastic bags used in food packaging, which can deteriorate food.
Although plastic bags of different materials have different uses, we should remember to take care of the environment, protect nature, do not confuse the use, do not throw it away.