AN APPARATUS AND METHOD FOR DEGRADING A WEB IN THE MACHINE DIRECTION WHILE PRESERVING CROSS-MACHINE DIRECTION STRENGTH

摘要

A method for embossing and perforating at least a portion of a web includes providing a first embossing roll having embossing elements and at least a second embossing roll having embossing elements. At least a predominate number of the embossing elements are substantially oriented in the cross-machine direction. The first and second embossing rolls define a perforate nip for embossing and perforating the web. The web is passed between the first and second rolls. The first and second embossing rolls are configured and the engagement and alignment therebetween are controlled to result in an element clearance that will achieve a non-picking clearance while achieving at least a 15% reduction in the machine direction tensile strength of the web.