Possible cause Check and avoid or solve The blow ratio […]
Check and avoid or solve
The blow ratio is too small (the blow ratio is too small, the PE molecules are mostly arranged in the machine direction, resulting in a decrease in the strength in the cross-cut direction, and the film toughness is not good)
1. The inflation ratio increases.
2. Use a smaller die to increase the blow ratio.
Melt temperature is too low
1. Increase the melt temperature while increasing the cooling rate.
2. If you can increase the back pressure and increase the temperature of the melt by grinding the heat, the effect will be better because the rubber compound can be mixed more evenly.
Melt temperature is too high