04225382 is referenced by 115 patents and cites 3 patents.

An improved process to produce a novel tissue which becomes ply-separable during the papermaking process. In a first embodiment of the invention a two-layered stratified web is formed, having a first layer comprised of a relatively low consistency slurry of long papermaking fibers and a second layer comprised of a high consistency slurry of relatively short papermaking fibers. In a second embodiment of the invention, a stratified web having three layers is formed, comprised of well-bonded layers separated by an interior barrier layer. These improved tissue products need not be creped from a creping roll with a doctor blade in order to exhibit ply-separability, and they may be creped in a single step to form a finished product which is creped all the way through.

Title
Method of making ply-separable paper
Application Number
870785
Publication Number
4225382
Application Date
May 24, 1979
Publication Date
September 30, 1980
Inventor
Edward R Wells
Cincinnati
OH, US
Paul D Trokhan
Hamilton
OH, US
Donald R Kearney
Cincinnati
OH, US
Agent
Thomas H O Flaherty
Richard C Witte
Fredrick H Braun
Assignee
The Procter & Gamble Company
OH, US
IPC
B21F 1/12
D21H 5/24
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