PE sheet:
HDPE sheet: High-density polyethylene (HDPE) is a thermoplastic made from themonomer ethylene.
PP sheet: It's very similar with PE sheet.
PE SHEET
Thickness: 6 - 100 mm
Sizes: 2000 x 1000mm, 3000 x 1500 mm ,1220x2440mm
PE ROD
Diameter: 10mm to 300mm
Length: 1M,2M
Color: white,black
Chemical resistance of HDPE:
Excellent resistance (no attack / no chemical reaction) to dilute and concentrated acids, alcohols, bases and esters. Good resistance (minor attack / very low chemical reactivity) to aldehvdes, ketones and vegetable oil.
Limited resistance (moderate attack / significant chemical reaction, suitable for short-term use only) to aliphatic and aromatic hydrocarbons, mineral oils, and oxidizing agents.
Poor resistance, and not recommended for use with halogenated hydrocarbons.
Advantages of HDPE:
Very low friction
Excellent abrasion resistance
Low moisture absorption
Very economical
Light and easy to machine
Very tough and impossible to break
Food safety
Water Resistant
Chemical Resistant
Application of HDPE:
Trays and general purpose containers
Corrosion-resistant work surfaces
Parts that need to be weldable and machinable
Parts that require flexibility, for which it serves very well
Very soft and pliable parts such as snap-on lids
Six pack rings
Juice and milk cartons are made of liquid packaging board, a laminate of paperboard and LDPE (as the waterproof inner and outer layer), and often with of a layer of aluminum foil (thus becoming aseptic packaging). Packaging for computer hardware, such ashard disk drives, screen cards, andoptical disc drives
Playground slides
Plastic wraps