Patent ID: 7175729
Filing Date: 2007-02-13
Classification: B29C,B29L,B31B,B65H,Y10T

Abstract:
1. A method for connecting two ends of side crease tubular film sheets made of thermoplastic plastic, comprising the steps of: equipping a first end of a first side crease tubular film sheet with cuts separating interior edges of the side creases to form a separated area, said first side crease tubular film sheet having first and second walls extending between said side creases; placing or inserting a second end of a second side crease tubular film sheet into the separated area in such a way that both of said walls overlie the second end with one layer each of each side crease of the end area of said second tubular film sheet being sandwiched between said walls; placing or inserting separating layers into the side creases of the sandwiched second end area; and connecting the first and second ends with one another with a lateral welding seam.