Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1986-04-08
1988-04-05
Dawson, Robert A.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
156209, 156220, 156280, 156290, 156291, 156305, 156578, 206204, 426124, 428211, 428223, B32B 714
Patent
active
047358467
ABSTRACT:
An absorptive laminated sheet material having improved, moisture-resistant, pressure bonded spots for locking the lamination layers together. During fabrication of the laminated product, a thermoplastic low-viscosity wax-like substance, such as melted wax or paraffin, hot melt plastic or the like, is applied in minute amounts onto juncture lines of pressure bonded spots formed in the pads. The thermoplastic material penetrates the layers of the laminated product so that, on cooling, it forms a "wax rivet" at each bonded spot, thus providing added strength for the juncture lines and rendering the layers impervious to absorbed liquid at the points of application.
REFERENCES:
patent: 2518762 (1950-08-01), Draheim
patent: 4207367 (1980-06-01), Baker
patent: 4275811 (1981-06-01), Miller
patent: 4321997 (1982-03-01), Miller
patent: 4382507 (1983-05-01), Miller
Spec Sheet of Paper-Pak Products, Inc.--Meat, Poultry, and Fish Pads.
Spec Sheet of Paper-Pak Products, Inc.--Absorbent Display Case Liners.
Bissell Henry M.
Dawson Robert A.
Paper-Pak Products, Inc.
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