The stretching laws of PE stretch films
Source:The stretching laws of PE stretch filmsTime:2020-04-16Visitors:
As an environmentally friendly packaging material, PE stretch film is now widely used in the packaging industry. Why is PE stretch film so popular? In addition to its environmentally friendly properties, its stretch characteristics are mainly inseparable.
There are the following:
1. When the temperature and the stretching speed are constant, the lower the stretching temperature exceeds the glass transition temperature of the material, the greater the orientation effect.
2. When the temperature and the stretching speed are constant, the greater the stretching ratio of the PE stretched film, the greater the orientation effect.
3. When the temperature and the stretching ratio are fixed, the faster the stretching speed, the greater the orientation effect.
4. Under stretching conditions, the faster the cooling rate, the greater the orientation.
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