The difference between PE/PP/PS/PVC/PET

- Aug 28, 2018 -

Polyethylene (PE)

Transparent: milky white translucent, waxy when not colored.

Features: The product feels slippery by hand, soft and tough. Generally, low density polyethylene is soft and has good transparency; high density polyethylene is hard.

Products: handbags, water pipes, oil drums, beverage bottles (calcium milk bottles), daily necessities, etc.

Polypropylene (PP)

Transparent: white, translucent, waxy when not colored.

Features: Lighter than polyethylene, transparency is better than polyethylene, harder than polyethylene.

Products: basins, barrels, furniture, film, woven bags, bottle caps, car bumpers, etc.

Polystyrene (PS)

Transparent: Transparent when not colored.

Features: The product is grounded or beaten, with a metal-like crisp sound, good gloss and transparency, similar to glass, brittle and easy to break, fingernails can be traced on the surface of the product. The modified polystyrene is opaque.

Products: stationery, cups, food containers, appliance housings, electrical accessories, etc.

Polyvinyl chloride (PVC)

Transparent: The color is yellowish translucent and shiny.

Features: Transparency is better than polyethylene, polyphenylene, and worse than polystyrene. It is divided into soft and hard polyvinyl chloride according to the amount of additives. The soft product is soft and tough, and the hand feels sticky; the hardness of the hard product is higher than that of the low density polyethylene, and lower than that of the polypropylene, whitening occurs at the inflection point.

Products: plates, pipes, soles, toys, doors and windows, wire sheaths, stationery, etc.

Polyethylene terephthalate (PET)

Transparent: Transparency is good.

Features: Strength and toughness are better than polystyrene and polyvinyl chloride, not easy to break.

Products: food packaging bags, bottle products, such as cola, mineral water bottles, etc.


  • Snack Container Making Machine
  • Take Away Box Machine
  • Plastic Disposable Cup Machine
  • Plastic dishes Forming Line
  • Yogurt Cup Making Machine
  • Plastic PP Sheet Line

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