LDPE (Low-Density Polyethylene) is perhaps the most common plastic you encounter, it very cheap and can be processed by all conventional methods.
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Good impact strength, food safe, good chemical resistance,can be shaped by all common plastic processes, can easily be recycled.
High thermal expansion, does not bond well (bad for gluing), can crack along stress lines, poor UV resistance, does not biodegrade
Possibly the most common use of LDPE is as plastic bags or in a thin packaging film, lots of LDPE is recycled in this way.
Advantages of LDPE?
Easy to recycle
- LDPE is very easy to recycle there is also a lot of it produced.
- Polyethelene is a thermoplastic means it can be heated and reshaped, however every melting process will degrade in quality to a certain degree.
Disadvantages of LDPE
Does not biodegrade
Image credit Polandeze
- Pollution from LDPE is a serious issue
- Some governments are banning or restricting use of LDPE in some markets.