04469735 is referenced by 74 patents and cites 11 patents.

An extensible multi-ply tissue paper product having high tensile energy absorption (TEA); high liquid absorbency; and, preferably, high tensile strength efficiency. The product comprises plies which are preferably embossed and discontinuously adhered together. The product has high tensile energy absorption by virtue of having substantial extensibility in the machine direction which, preferably, results from its constituent plies having substantial MD extensibility induced by having undergone wet and/or dry foreshortening during their manufacture. The product has synergistically high liquid absorbency by virtue of at least two plies of the product having sufficiently different stress/strain properties that one ply will sufficiently constrain unadhered portions of the other ply from being elongated in the plane of the paper when wetted that such unadhered portions of the constrained ply will pucker in the Z-direction as its foreshortening-induced internal stresses are relieved. Preferably, the constraining ply is high bulk, wet-microcontracted tissue paper, and the other ply is dry-foreshortened tissue paper: e.g., dry-creped tissue paper. Also, the plies of preferred embodiments preferably have nominally equal MD extensibilities at rupture. Such preferred products have high tensile strength efficiency which is manifested by their having monomodal stress/strain characters. Embodiments of the invention such as two and three ply paper towels are especially useful for spill wipe-up applications.

Title
Extensible multi-ply tissue paper product
Application Number
6/358544
Publication Number
4469735
Application Date
March 15, 1982
Publication Date
September 4, 1984
Inventor
Paul D Trokhan
Hamilton
OH, US
Agent
Richard C Witte
Fredrick H Braun
Thomas J Slone
Assignee
The Procter & Gamble Company
OH, US
IPC
B32B 7/00
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