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Different Types of plastic grades?

Each kind of plastic has a different chemical makeup so to make people and recycling plant aware of them the Society of the Plastics Industry (SIP) in the year 1988 introduced classification system or you can say grading system.

The following plastic grades are:


Grade 1 plastics are made up of polyethylene terephthalate (PET). It is commonly used in beverage bottles, water bottles, medicinal jars and bean bags.


Grade 2

plastics are made up of high-density polyethylene, or  tui HDPE. It is extremely safe as it does not leach chemicals into foods or drinks. It is used in shampoo bottles, milk containers, motor oils, and bleaches.


Grade 3 plastics are made up of polyvinyl chloride, or PVC. This plastic is used in all kinds of pipes and tiles.


Grade 4 is made up of low-density polyethylene, or LDPE. used for tui nilon ldpe.

It is used to make cling wraps, sandwich bags, squeezable bottles and grocery bags.


Grade 5 plastics are made up of polypropylene, or PP. It is used to make plastic diapers, lunch boxes (Hunger Box), small containers (Munchie Box), margarine containers, syrup bottle and yogurt boxes. used for tui nhua pp.


Grade 6 plastics are made up of polystyrene, also known as PS. This is basically used to make disposable items like spoons, plates, coffee cups, etc.


Grade 7 plastics are designated for other kinds of plastic which don't fall under the first six classifications. Plastics like polycarbonate, ABS, and polylactide fall under this category. Polycarbonate (PC) is used to make baby bottles, compact disc, and medicinal storages.

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