I. Factors affecting the performance of vapour plated silicon oxide barrier packaging filmsVapour plating base film, vapour plating method, vapour plating conditions as well as the composition of the vapour plating coating and the thickness of the vapour plating layer may have a great impact on the

All films made from thermoplastics share a common problem: special production techniques must be used to achieve a uniform thickness. Unlike extruded tubes and sheets, extruded films can have large variations in thickness if special steps are not used. Even now, the quality of the films produced in

Nanjing Sumino Seiko co-extruded barrier composite films are usually made from a combination of barrier plastics, polyolefin plastics (moisture-proof plastics, generally also used as heat sealing layers) and adhesive resins, which are described below.Barrier resinsThe former is used to produce gener

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