There are many kinds of plastic bags, which can be divided into high pressure plastic bags, low pressure plastic bags, polypropylene plastic bags, PVC plastic bags, vinyl acetate bags, polyethylene and vinyl acetate bags and polyethylene composite bags. bags according to production raw materials Polypropylene, polyvinyl acetate, polyethylene, polyvinyl chloride, polyethylene, nylon, polyethylene, polyethylene terephthalate, polypropylene, polypropylene more than ten categories. Among these dazzling materials, the following types of plastic packaging are mainly used in our daily life:
Low pressure plastic bag
Low density polyethylene, also known as high density polyethylene (HDPE), is mainly used for blow molding and the production of various bottles and jars. fresh food storage bags and woven bags.
High pressure plastic bag
High Density Polyethylene, also known as Low Density Polyethylene (LDPE), has a low melting point and is mainly used in film products, followed by pipes, injection molding products and wire wrap layers. It is also often used in food packaging such as cakes, candy, roasted seeds and nuts and tea, and fiber packaging such as clothing and needle cotton products.
PVC plastic bags
Polyvinyl chloride (PVC), once the world's largest general-purpose plastic, is widely used. It is widely used in building materials, industrial products, daily necessities, fiber products, luggage bags, needle cotton packaging bags, cosmetic packaging bags, etc.
Polypropylene plastic bags
Polypropylene has high impact resistance, resistance to various organic solvents, acid and alkali corrosion, and is one of the common polymer materials. It is mainly used in plastic packaging for the packaging of textiles, needle cotton products, clothing, shirts Wait.
Degradable plastic bags
With the development of science and technology, biodegradable plastic products have appeared on the market, which can replace single-use plastic. The components of such plastic products mainly include polylactic acid (PLA), polyhydroxyalkanoic acid (PHA), polybutyl acrylate (PBA), polybutylene succinate (PBS) and other polymeric materials. At present, the use of degradable plastic products is widely promoted in society, and milk tea straws and plastic bags in supermarkets have been largely replaced by degradable plastics.