Embossed paper having alternating high and low strain regions
First Claim
1. A soft, embossed, sanitary paper product useful for tissues, towels, napkins and wipers, comprising a paper web having a basis weight between about 6 and about 58 pounds per 2,880 square feet, a tensile strength in the cross-machine direction between 2 and 40 ounces per inch of width, and a plurality of bosses of the same size and shape alternating up and down from a formed midplane across the plane of the web in two directions;
- the paper product being characterized by;
A. each boss having an asymmetric shape in a cross section parallel to the midplane;
B. said asymmetric shape in the up bosses having a different orientation from that of the down bosses; and
C. on each boss, the paper interconnecting it with the adjacent boss on one side being strained more than the paper interconnecting said each boss with the adjacent boss on its opposite side.
2 Assignments
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Accused Products
Abstract
An embossed sanitary paper product and method of making such product. The paper is embossed to form in the paper a midplane and an array of bosses extending up and down from the formed midplane. Each upward extending boss is flanked on two sides, in each of two directions, by a downward extending boss, and in at least one of the two directions, the paper between an upward extending boss tip and an adjacent downward extending boss tip on one side has a higher strain than the paper between the upward extending boss tip and an adjacent downward extending boss tip on the opposite side. The forming of a higher strain region and a lower strain region on opposite sides of a boss can be accomplished by forming asymmetric bosses with each upward extending boss rotated 180° about an axis perpendicular to the plane of the paper with respect to its adjacent downward extending bosses.
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Citations
19 Claims
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1. A soft, embossed, sanitary paper product useful for tissues, towels, napkins and wipers, comprising a paper web having a basis weight between about 6 and about 58 pounds per 2,880 square feet, a tensile strength in the cross-machine direction between 2 and 40 ounces per inch of width, and a plurality of bosses of the same size and shape alternating up and down from a formed midplane across the plane of the web in two directions;
the paper product being characterized by; A. each boss having an asymmetric shape in a cross section parallel to the midplane; B. said asymmetric shape in the up bosses having a different orientation from that of the down bosses; and C. on each boss, the paper interconnecting it with the adjacent boss on one side being strained more than the paper interconnecting said each boss with the adjacent boss on its opposite side. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
Specification