Plastic raw materials in accordance with the molecular structure of synthetic resins are mainly thermoplastic and thermosetting plastics: thermoplastic plastic refers to repeated heating is still plastic plastic plastic: mainly PE/PP/PVC/PS/ABS/PMMA/POM/PC/PA and other commonly used raw materials. Thermosetting plastic mainly refers to the heating of the hardening of synthetic resins made of plastic, such as some phenolic plastics and amino plastics, not commonly used.
According to the scope of application, there are mainly general-purpose plastics such as PE/PP/PVC/PS, engineering plastics such as ABS/POM/PC/PA and other commonly used. In addition, there are some special plastics such as high temperature and high humidity and corrosion resistance and some other plastic modified for specialized purposes.
Extended information:
In order to facilitate the recycling of plastics, the American Society of the Plastics Industry has proposed the use of plastic type to classify the labeling system: Recyclable plastic containers will be accompanied by a triangular label surrounded by three arrows, which will indicate the type of plastic.
China's national standard (GB18455-2001) states that plastic packaging products or containers with a volume/volume greater than 100 milliliters must be visually marked with a plastic recycling label:
PET Polyethylene terephthalate, also often called polyester is commonly found in PET bottles.
HDPE High-density polyethylene is commonly found in detergent containers, milk bottles, and supermarket bags.
PVC Polyvinyl Chloride Commonly used in plumbing, outdoor furniture, and raincoats.
LDPE Low Density Polyethylene Commonly used in tube packaging for toothpaste or facial cleanser.
PP Polypropylene Commonly used in bottle caps, straws, microwave food containers.
PS Polystyrene is divided into unfoamed or foamed. Unfoamed that is, Polystyrene, commonly used in some drinks (such as Yakult) containers; has been foamed that is commonly known as styrofoam, commonly used in packaging pellets, disposable thermal insulation plastic cups, packaging frozen meat containers, lunch boxes.
OTHER Other recyclable plastic products include polymethylmethacrylate (PMMA), polycarbonate (PC), polylactic acid (PLA), nylon (Nylon) and fiberglass reinforced plastic (FRP), bi-directional stretch polylactic acid film (BOPLA) and so on.
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