Coating machine is mainly used for film, paper, etc. surface coating process production, this machine is the roll of substrate coated with a layer of specific function of the glue, paint or ink, etc., and drying and winding.The use of special multi-functional coating head, can achieve a variety of f

Causes.1. The coating roller and bearing precision is not enough to form a regular crossbar path;2. When the coating roller for the active drive, the choice of speed control programme is not appropriate, such as with harmonic reducer direct connection;3. Tension control system is unstable, or tensio

BOPP biaxially oriented film production line produces products mainly used for books, periodicals, annual report cover, cardboard, gift bags, food packaging and other appearance of three-dimensional sense of paper lamination. Another use is to compound with polyethylene film, cast polyethylene film,

There are two major types of preparation methods for evaporated silicon oxide-based barrier packaging films: physical vapor deposition (PVC) and chemical vapor deposition (CVC). Depending on the specific implementation method, there are various methods as follows. Barrier film production equipment1.

1、 Shrinkage phenomenonThe viscoelastic behavior of the polymer melt when the film is cast with a T-shaped die causes the following problems① The width of the film narrows due to the shrinkage phenomenon;(ii) The problem of film stretching, which is the phenomenon of material surge or breakage durin