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AssigneeJames River Corporation of Virginia
InventorsRobert J. Marinack, Anthony O. Awofeso, Frank D. Harper, Thomas N. Kershaw
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The present invention relates to biaxially undulatory single-ply and multi-ply tissues, single-ply and multi-ply towels, single-ply and multi-ply napkins and other personal care and cleaning products as well as novel creping blades and novel processes for the manufacture of such paper products. The present invention is directed to tissue and towel product having highly desirable bulk, appearance and softness characteristics produced by utilizing a novel undulatory creping blade having a multiplicity of serrulations forced in its rake surface which presents differentiated creping angles and/or rake angles to the web as it is being creped. The invention is also directed to a novel blade having an undulatory rake surface having trough-shaped serrulations in the rake surface of the blade. The undulatory creping blade has a multiplicity of alternating serrulated sections of either uniform depth or a multiplicity of arrays of serrulations having non-uniform depth.
A creped multi-ply paper suitable for use as bathroom tissue, towel, napkin, and facial tissue having a basis weight of about 7 to 40 pounds for each 3,000 square foot ream comprising a biaxially undulatory cellulosic fibrous web characterized by a reticulum of intersecting undulations and crepe bars, said crepe bars extending transversely in the cross machine direction, said undulations defining:
A creped multi-ply paper in the form of a towel wherein the specific caliper of the towel is from about 2.5 to about 7 mils per 8 sheets per pound of basis weight comprising at least two biaxially undulatory cellulosic fibrous webs creped from a Yankee dryer, the towel having a basis weight from about 17 to about 36 lbs./3,000 square foot ream and said towel is characterized by a reticulum of intersecting undulations and crepe bars, said crepe bars extending transversely in the cross machine direction, said undulations defining interspersed ridges and furrows extending longitudinally in the machine direction, on the air side along with crests disposed on the Yankee side of the web, wherein the spatial frequency of said transversely extending crepe bars is from about 10 to about 150 crepe bars per inch, and the spatial frequency of said longitudinally extending ridges is from about 10 to about 50 ridges per inch and wherein the nascent web is subjected to overall compaction while the percent solids is less than fifty percent by weight.
Dependencies are inferred from the claim text.