EMBOSSED PAPER HAVING ALTERNATING HIGH AND LOW STRAIN REGIONS

摘要

ABSTRACTAn embossed sanitary paper product and method of makingsuch product. The paper is embossed to form in the paper amidplane and an array of bosses extending up and down from theformed midplane. Each upward extending boss is flanked on twosides, in each of two directions, by a downward extending boss,and in at least one of the two directions, the paper between anupward extending boss tip and an adjacent downward extendingboss tip on one side has a higher strain than the paper betweenthe upward extending boss tip and an adjacent downward extendingboss tip on the opposite side. The forming of a higher strainregion and a lower strain region on opposite sides of a boss can beaccomplished by forming asymmetric bosses with each upwardextending boss rotated 180° about an axis perpendicular to theplane of the paper with respect to its adjacent downward extendingbosses.