With the rapid development of the plastics industry, plastics machinery has also evolved significantly, and at the same time, there are various plastic film preparation processes followed by continuous upgrading, today to understand the development process of co-extrusion class barrier composite fil

1. Shrinkage phenomenonThe viscoelastic behaviour of the polymer melt when the film is calendered with a T-die head causes(i) problems such as the shrinkage phenomenon, where the width of the film narrows;② the problem of stretchability of the film, which is the phenomenon of material surging or bre

Extrusion cast laminators, which some manufacturers and users in the industry are used to calling film laminators, are also called extrusion laminators, cast machines, extrusion cast machines, cast laminators, film coating machines, plastic coating machines, coating laminators (inaccurate, actually

Plastic film, especially BOPP and other biaxially oriented film, there is an obvious molecular orientation, in a state of stress concentration, when there is no cut, it is difficult to tear, but once there is a cut, it can be more convenient to tear, so a large number of applications in the market,

Co-extruded cast filmsFor the semi-rigid sheet structures and flexible film structures discussed so far, the resins used are both different and partly identical. Semi-rigid sheets mostly use high modulus resins such as HIPS, HDPE and PP as the thickest structural layer: soft films use more low modul