Patent ID: 8303748
Filing Date: 2012-11-06
Classification: B32B,B65H,Y10T

Abstract:
1. Method for producing packaging material used to fabricate contents-containing packaging containers comprising: delivering a barrier layer to a press nip between a press roll and a counter roll, the press roll comprising a metal core and elastic material covering the metal core and extending continuously around the circumference of the press roll, the elastic material possessing sections which exhibit local deformation ability relative to a portion of the elastic material adjacent the sections, each of the sections being a free standing unit delimited from adjacent sections, and the sections being provided continuously around the circumference of the press roll; delivering a web of paper or carton to the press nip, the web comprising crease lines, through holes, openings or slits; delivering a thermoplast material to the press nip so that the thermoplast material is between the web and the barrier layer, the barrier layer and the thermoplast material first being brought together in the press nip; pressing the thermoplast material, the web and the barrier layer together in the press nip between the press roll and the counter roll to deform at least some of the sections of elastic material relative to the adjacent sections of elastic material so that the adjacent sections of the press roll penetrate into the crease lines, through holes, openings or slits in the web, to produce the packaging material subsequently used to fabricate the contents-containing packaging container.