Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1990-11-29
1993-04-20
Lesmes, George F.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
428513, 428282, 428288, 428296, 428218, 428298, 428303, 162129, 162130, 162132, 162146, 36 43, 36 44, A43B 1338, D03D 2500, D21F 1300
Patent
active
052041735
ABSTRACT:
A laminated paperboard product and a process for making the product and shoe insoles made therefrom. The product is formed of a first layer with a mixture of a predominance of a polyolefin fibers (preferably polyethylene) that has been treated to make it hydrophilic and long fiber softwood pulp, and a second layer formed of a mixture of the polyolefin fiber (again preferably polyethylene) and a predominance long fiber softwood pulp.
When made into shoe insoles, the product has a second ply formed of a third and a fourth layer. The third layer has a composition that is similar to the second layer in that the quantity of polyolefin is greater then the quantity of wood pulp and the fourth layer has a composition that is similar to the first layer in that the quantity of polyolefin is less then the quantity of wood pulp.
The layers of the product are bonded together by melting the polyolefin of one layer into the polyolefin and the fiber matrix of an adjacent layer, each of the layers being disposed on each other, the first layer forming one side and the fourth layer forming an obverse side and the second and third layers being disposed therebetween.
REFERENCES:
patent: 4212703 (1980-07-01), D'Amico et al.
patent: 4864740 (1989-09-01), Oakley
patent: 4882213 (1989-11-01), Gaddis et al.
DVSG Holding GmbH
Lesmes George F.
Shelborne K.
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