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US 6,455,129 B1Granted
Single-ply embossed absorbent paper products
AssigneeFort James Corporation
InventorsThomas N. Kershaw, Dale T. Gracyalny
Life of this patent
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AssigneeFort James Corporation
InventorsThomas N. Kershaw, Dale T. Gracyalny
Estimating the term…
The invention relates to embossing single-ply paper products, for example, paper towels, tissue and napkins, in which an improved embossing arrangement is used which is particularly suitable for paper products which have been processed so as to impart undulations whose axes extend in a principal undulatory direction, typically in the machine direction. The absorbent sheet typically further includes undulations which extend in the cross (transverse direction) of the web such that the absorbent sheet has a biaxially undulatory structure. The undulations may be formed by the use of an undulatory creping blade. Defined parameters accommodate: the distance at which the undulations are spaced, the total surface area of the design (embossing) elements, the width and length of the embossing elements and the aspect ratio of the elements, as well as the angular orientation of the embossing elements with respect to the undulations.
A single-ply absorbent sheet provided with primary undulations extending along a principal undulatory axis of said sheet, said primary undulations being laterally spaced apart a distance, S, said single-ply absorbent sheet being provided with an emboss pattern comprising a plurality of design elements wherein up to about 50 percent of the surface area of said absorbent sheet is embossed, characterized in that each design element of said emboss pattern has a characteristic emboss element lateral width, W, and a characteristic emboss element, length, L, along a direction L′ and wherein the ratio of W:S for each design element is from about 1 to about 4.
A single-ply sheet provided with primary undulations extending along a 5 principal axis of said sheet, said primary undulations being laterally spaced apart a distance, S, said single-ply absorbent sheet being further provided with an emboss pattern comprising a plurality of embossments of width, W, and length, L, wherein the lengths are along a direction, L′, and wherein said embossments cover no more than about fifty percent of the area of said absorbent sheet, and wherein further the embossments are spaced apart from each other at a distance, D, with the proviso that at least one of the ratios of W:S and D:S is from about 1 to about 4.
A method of making a single-ply absorbent sheet comprising:
A method of making a single-ply embossed absorbent sheet comprising:
Dependencies are inferred from the claim text.