Abstract:
A self-bonded corrugated web made from a primary pre-bonded web layer of thermoplastic fibers having a substantially uniform thickness. The primary pre-bonded web layer is arranged to form corrugations forming a corrugation pattern of parallel corrugation lines, which can be parallel to the longitudinal extension of the web. The corrugated web is heat- or melt-fusion bonded in regions forming a primary bonding pattern of a plurality of primary bonding pattern lines, which are arranged non-parallel to the corrugation lines and which intersect at least two of the corrugation lines, for stabilizing the corrugations.
Abstract:
The present invention provides a method for splicing a strip of material packaged in stacks arranged parallel to each other. The method comprises a step of reversely rotating the bottom end portion around the transverse edge of the bottom end portion and/or reversely rotating the top end portion around the transverse edge of the bottom end portion until the longitudinal tangential vector of the bottom end portion forms an angle of 90 and 270 degrees with the longitudinal tangential vector of the top end portion.