Stock material or miscellaneous articles – Sheet – web – or layer weakened to permit separation through...
Patent
1990-12-11
1992-05-19
Thomas, Alexander S.
Stock material or miscellaneous articles
Sheet, web, or layer weakened to permit separation through...
428906, 428131, 428136, B32B 310
Patent
active
051147718
ABSTRACT:
Disclosed is a perforator blade for core wound paper products, such as toilet tissue and paper towels. The perforator blade has a relatively narrow notch width and a relatively narrow tooth width. As the notch width and tooth width of the perforator blade are decreased, the total notch width, which is the aggregate of the width of each notch across the total width of the perforator blade, is similarly decreased.
A perforator blade according to the present invention provides very high perforation bond strengths, joining superimposed plies in face-to-face relation, without unduly increasing the tensile strength of the lands bridging adjacent sheets of the core wound paper product. Also, individual tooth flexibility is increased according to the present invention resulting in enhanced perforator blade life and perforation bond quality. Perforated paper products according to the present invention also exhibit less lint, reducing hygiene problems, reduced occurrences of sheet tearing during dispensing, and provide a smoother, better finished appearance during dispensing.
REFERENCES:
patent: 2328109 (1943-08-01), Thompson
patent: 4238541 (1980-12-01), Burton
patent: 4627117 (1986-12-01), Morishita
patent: 4963406 (1990-10-01), Gooding, Jr. et al.
The Kinetic Company Advertising Brochure, "Operating Principles of the Kinetic High Speed Perforating Blade" (Apr. 1988).
Habel Mark A.
Ogg Randy G.
Braun Fredrick H.
Huston Larry L.
The Procter & Gamble & Company
Thomas Alexander S.
Witte Richard C.
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