共挤出工艺是一种生产多层塑料制品的加工技术,典型的共挤出制品有薄膜和片材。在共挤出工艺中,二种以上的聚合物分别经不同的挤塑机头挤出后在同一口模中进行复合,每一种聚合物在成品薄膜(片材)中各自形成性质不同的树脂层。这种工艺过程与其它生产多层结构制品的工艺方法比较,不仅在生产成本上,而且在制品功能上都肯有更多的优越性。 The coextrusion process is a processing technique used to produce multilayer plastic products, typically coextruded films and sheets. In the coextrusion process, two or more polymers are separately extruded through different extruder heads and then combined in the same die. Each of the polymers is formed into a film having different properties in the finished film (sheet) Resin layer. This process and other multi-layer structure of the product compared to the production process, not only in terms of production costs, but also in the product features are willing to have more advantages.