Patent ID: 6568305
Filing Date: 2003-05-27
Classification: B26D,B29C,B29L,B65D,Y10T

Abstract:
A process for producing tubular bodies from an endless line of tubing having an internal longitudinal separating wall to form two chambers separated from one another, said method comprising:forming said line of tubing from a film having a central semicircular part and two bent lateral wings, said semicircular part being covered by a second film serving as the separating wall; and cutting said line of tubing to form tubular bodies of a predetermined length with a transverse cutter having two rotating blades, by feeding the line of tubing between the two rotating blades so as to be flattened and oriented in such a way that the flattened tubing has a central three-layered region consisting of the separating wall in a center region and a flat overlying and a flat underlying wall section, and two two-layered regions adjoining the three-layered region on either side, each two layered region consisting of bent, superimposed tubular body wall sections.