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Q. What is Polyethylene?
Polyethylene (P) (Low density polyethylene (LDPE), medium density, linear low-density (LLDPE), high-density polyethylene (HDPE) and ethylene vinyl acetate copolymer): These materials have an excellent sealability, good moisture barrier, low temperature durability and good tear resistance. LDPE is heat sealable, odour free and shrinks when heated. It is less expensive than most films and is therefore widely used - including applications in shrink or stretch-wrapping. HDPE is stronger, thicker, less flexible and more brittle than LDPE. They are however water-proof and chemically resistant and are used instead of multi-wall paper sacks for shipping containers. Generally, polythene is used for packaging processed and fresh meats, cheese etc. High density polyethylene is used in applications such as containers, milk and detergent bottles, bags and industrial wrapping. Low density polyethylene is used for pallet and agricultural film, bags, coatings and containers.
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