PROCESS AND DEVICE FOR MANUFACTURING MULTILAYERD PRODUCTS BY EXTRUSION OR PULTRUSION AND THE USE OF THE MELT CO-EXTRUDED WITH THE AID OF THE SAID DEVICE

摘要

PCT No. PCT/EP94/03559 Sec. 371 Date Jul. 10, 1996 Sec. 102(e) Date Jul. 10, 1996 PCT Filed Oct. 28, 1994 PCT Pub. No. WO95/12483 PCT Pub. Date May 11, 1995A method of manufacturing of continuous, at least two-layer products having an upper layer formed of a lacquer material, the method having the steps of providing an apparatus including a co-extrusion tool having first and second conduits, respectively, with the first and second inlets, with the second conduit circumscribing the first conduit, and a merging section in which flows exiting the first and second conduits merge, and first and second extruders connected with the first and second inlets, respectively, and simultaneously injecting melts of base and lacquer materials with the first and second extruders, respectively, through the first and second conduits, respectively, so that on at least two-layer product exiting the merging section of the co-extrusion tool and having an upper lacquer layer, is produced in a single step.