Causes And Prevention Of Excessive Shrinkage Of PE Stretch Film2

Two, the prevention of excessive shrinkage phenomenon:

In fact, in the design of workshop to consider the warm, air convection problems, because PE stretch film in the process of stretching heat loss is very fast, the thinner, the wider the stretch, the faster the heat dissipation. From the tensile inlet to the tensile outlet, the surface temperature drops from 175℃ to 135℃ in a short 3m space, so the temperature of the production workshop should not be less than 20℃ in general. The workshop was designed with only exhaust Windows above and no Windows below. In addition, in order to avoid cold stretching, a greenhouse can be made in the transverse stretching part to ensure the ambient temperature. Appropriately reducing the speed ratio of each machine can also reduce the stretching of the product.

In simple terms, the shrinkage of PE stretch film is too large because the product in the process of stretching is too large to reach the width of the product requirements, in the process of secondary composite heat retraction is too large, more than the standard requirements, can not reach the width of the product requirements. And its prevention methods we also talked about in the above content, for you to use as a reference. Therefore, when we use the product, we must do a good job in advance to prevent problems, so as to avoid various problems in the process of use, reduce the work efficiency.