ÜBERLAPPENDE ABDICHTUNGSSTRUKTUR

摘要

The present invention concerns a lap-seal structure for joining laminate elements of res- inous material, wherein the lap-seal structure comprises a first laminate element (30) comprising a first layer (31) and a second layer (32) lami- nated thereon so that at one edge of the first laminate element (30), the second layer and the lamination (33) of the second layer extend to a distance from the edge of the first layer whereby a border area (50) of the first layer is formed in the direction of the edge, a second laminate element (40) comprising a first layer (41) and a second layer (42) laminated thereon, wherein the outer surface (44) of the first layer of the second laminate element is heat fusible with the inner surface (35) of the first layer (31) of the first laminate element, the outer surface (44) of the first layer (41) of one end of the second laminate element (40) is overlapping the inner surface of the first layer of the first laminate element at the said border area (50) of the first laminate over a distance, a bonded area (52) formed by heat-sealing the facing surfaces longitudinally at the over- lapping area over a distance in the transverse direction to the longitudinal direction, to form a lap-seal. The invention also concerns a pre-package and a package comprising said lap-seal structure.