| 摘要 |
Method of manufacturing of a multilayer plastic film which has a backing layer an adhesive layer, and a cover layer, which by means of a tool or object inducing pressure exposes the adhesive arranged underneath the cover layer. The three layers, i.e., backing, adhesive and cover layer are coextruded in one step, wherein the layers have preferably the following thicknesses: backing from 20 microns to 100 microns, adhesive from 10 microns to 100 microns, plastic cover layer from 2 microns to 20 microns. The cover layer consists of a brittle extrudable thermoplast, preferably a brittle-hardening polyethylene or polystyrene. |
