Material HDPE - high density polyethylene
HDPE is the high density version of PE plastic. It is harder, stronger and a little heavier than LDPE, but less ductile. Dishwasher safe.

HDPE is lighter than water, and can be moulded, machined, and joined together using welding (difficult to glue).

The appearance is wax-like, lustreless and opaque. The use of UV-stabilizators (carbon black) improves its weather resistance but turns it black. Some types can be used in contact with food.
Danish Name HDPE - høj massefylde polyethylen
Category Plastics, Thermoplastics
Products Milestone
Bottle for motor oil
Bottle for organic solvents
Street bollard
Hedge cutter
Gasoline tank
Milk bottles
Plastic bag (stiff type that crackles)
Children's toys
Lid for honey pot
Beer crate
Dolphin bicycle trailer
Processes Plastic moulding
Plastic injection moulding
Extrusion
Film blowing
Blow moulding
Similar materials PP
and many other plastics
Price Low cost plastic (see also Plastics general overview)
Environmen- tal notes Creation: Production of 1 kg of HDPE requires the equivalent of about 1 3/4 kg of oil (raw material and energy).

Use: -

Disposal: Used PE plastic can be recycled through remelting although there is a quality loss. Incineration is straightforward and comparable to oil, since PE only consists of hydrogen and carbon atoms.

In an incineration plant only water and carbon dioxide are produced. However common additives like UV-stabilizators (e.g. carbon black), dyeing agents and fire protectors can produce other waste products. Heating value is equivalent to 3/4 kg of oil.
Additional Info HDPE is highly resistant to many acids, alcalis and solvents.
Photo Thomas Nissen (Computer graphics)
Copyright © 1996-2003 Torben Lenau
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