Machine winding film

As an environmentally friendly packaging material, PE stretch film is widely used in the packaging industry. Why is PE stretch film so popular? In addition to its environmental characteristics, it is also inseparable from its stretching properties. Today, we will mainly share the stretching laws of PE stretching films, which mainly include the following points:
(1) When the temperature and stretching speed are constant, the lower the stretching temperature exceeds the material's glass transition temperature, the greater the orientation effect.
(2) When the temperature and stretching speed are constant, the larger the stretching ratio of the PE stretching film, the greater the orientation effect.
(3) When the temperature and stretching ratio are constant, the faster the stretching speed, the greater the orientation effect.
(4) Under stretching conditions, the faster the cooling rate, the greater the orientation.