Can variation of density in each co-extruded layer of blown film cause the physical defect like melt fracture, shark skin or even thickness problem?

I'm currently investigate the physical problem of co-extruded blown film (3 layer with ratio 1:5:1) such as melt fracture, gel, skin shark and even inconsistent of thickness. One of the root...

07 July 2019 10,064 2 View