What is HDPE plastic? Where are HDPE plastics mainly used?

Editor:海宁弘凯科技有限公司 │ Release Time:2022-05-26 

High Density Polyethylene (HDPE for short) is a non-polar thermoplastic resin with high crystallinity. The appearance of the original HDPE is milky white, and it is translucent to a certain extent in the thin section. PE has excellent resistance to most household and industrial chemicals. Certain kinds of chemicals are chemically aggressive, such as corrosive oxidants (concentrated nitric acid), aromatic hydrocarbons (xylene), and halogenated hydrocarbons (carbon tetrachloride). The polymer is non-hygroscopic and has good water vapour resistance for packaging applications. HDPE has good electrical properties, especially high insulation dielectric strength, making it very suitable for wires and cables. Medium to high molecular weight grades have excellent impact resistance at ambient temperatures and even as low as -40F.

Mainly used for: extrusion packaging films, ropes, woven bags, fishing nets, water pipes; injection molding of low-grade daily necessities and shells, non-load-bearing components, plastic boxes, turnover boxes; extrusion blow molding containers, hollow products, bottles.

HDPE plastic has: acid and alkali resistance, organic solvent resistance, excellent electrical insulation, and can still maintain a certain toughness at low temperature. Surface hardness, tensile strength, rigidity and other mechanical strengths are higher than LDPE, close to PP, tougher than PP.