Patent ID: 6537412
Filing Date: 2003-03-25
Classification: H05K,Y10T

Abstract:
A process for producing multilayers (1) having on both of their outer sides an outer metal foil (2a, 2b) and between them at least one inner layer (3), wherein the foils (2a, 2b) and the inner layer(s) (3) are connected to each other under effect of pressure and temperature by intermediate layers (4) impregnated with adhesive, comprising the steps of applying the metal foils (2a, 2b) to both sides of a separation layer(s) (5), stacking the foils of a plurality of multilayers (1) on top of each other while a separation layer (5) is inserted between them, and then simultaneously pressing the multilayer stack with inserted separation layer(s) (5), wherein the separation layer (5) is inserted in the multilayer stack together with an upper metal foil (2b) of a multilayer (1) lying underneath it and a lower metal foil (2a) of a multilayer (1) lying above it, wherein the metal foil (2a, 2b) is applied around the separation layer (5) on its underside, end side and upper side in a U-shape before the separation layer (5) is inserted in the multilayer stack, and wherein the metal foil (2a, 2b) is placed on a conveyor belt (14) that is subdivided in a transport direction, the separation layer (5) is laid over a portion (2a) of the metal foil, and an application roller (15) arranged in an area of the subdivision of the conveyor belt (14) grasps onto the metal foil from below, drives up past the end side of the separation layer (5) and then continues above the separation layer (5) and lays a remaining portion (2b) of the metal foil over the separation layer (5).