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The Differences of some plastic particle

Today we will introduce the differences of some common plastics.


1.  Polyethylene(PE)

Appearance: When unpigmented, it is milky white, translucent and waxy; the product feels smooth when touched by hand, flexible and flexible; it can stretch slightly. Generally, low-density polyethylene is softer and has better transparency; high-density polyethylene is harder.

Common products: Plastic film, handbags, water pipes, oil drums, beverage bottles (calcium milk bottles), daily necessities, etc.


2. Polypropylene(PP)

Appearance: White translucent, waxy when unpigmented; lighter than polyethylene. The transparency is also better than that of polyethylene, and it is harder than polyethylene.

Common products:Basins, barrels, furniture, films, woven bags, bottle caps, car bumpers, etc.


3. polystyrene(PS)

Appearance: Transparent when unpigmented. When the product is dropped or tapped, it has a metal-like crisp sound, good luster and transparency, similar to glass, brittle and easy to break, and the surface of the product can be scratched with fingernails. Modified polystyrene is opaque.

Common products:Stationery, cups, food containers, home appliance housings, electrical accessories, etc.


4. polyvinyl chloride(PVC)

Appearance: The natural color is light yellow, translucent and shiny. The transparency is better than that of polyethylene and polystyrene, but worse than that of polystyrene. It is divided into soft and hard polyvinyl chloride according to the dosage of additives. Soft products are flexible and tough, and feel sticky. The hardness of hard products is higher than that of low-density polyethylene. , while lower than polypropylene, whitening occurs at the inflection point.

Common products:Sheets, pipes, soles, toys, doors and windows, wire sheaths, stationery, etc.


5. Polyethylene terephthalate(PET)

Appearance: The transparency is very good, the strength and toughness are better than that of polystyrene and polyvinyl chloride, and it is not easy to break.

Common products:Often bottle products: cola, mineral water bottles, etc.

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