Patent ID: 6413199
Filing Date: 2002-07-02
Classification: B29C,B29L,B31B,B32B,B65D

Abstract:
A method of manufacturing edge-sealed packaging container blanks (1) starting from a continuous material web (2) with an outside (5) and an inside (6) layer, said inside layer (6) extending outside the one edge (13) of the web (2), for the formation of a fixed strip (10), said strip (10) being folded over the edge (13) of the web (2) and sealed to the outside layer (5), characterized in that the web (2) is thereafter cut into sheets (12) which are advanced with a certain interspace (18) between the sheets (12), said sheets (12) being laminated to two continuous plastic foil webs (20, 22), one outer (22) and one inner (20) web, each foil web (20, 22) extending outside one edge (13, 15) of the sheets (12), for the formation of two strips (34, 35), said strips (34, 35) extending outside the edges (13, 15) being each folded and sealed around an edge (13, 15), said sheets (12) being once again severed from one another centrally between two sheets (12) and turned through 90Â° in relation to the direction of the web, the strips (27, 28) formed in the interspace (18) and consisting of the outer (22) and inner (20) plastic foil webs being thereafter folded over the second (14) and fourth (16) edges of the sheet (12) towards the inside of the sheet (12), the sheet (12) being once again turned through 90Â° in relation to the direction of the web, and said sheet (12) being finally folded together and longitudinally joint sealed.