Process for the production of two-layer textile reinforcement ad

Details Process for the production of two-layer textile reinforcement ad Process for the production of two-layer textile reinforcement ad

1995-02-09

1997-04-01

Cannon, James C.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including stitching and discrete fastener, coating or bond

442 26, 28104, 28112, 28169, 156 91, 156148, 156176, 156291, 156324, 428103, 428109, 428110, 428141, 428340, 428341, 428489, B32B 506, B32B 526, D06N 500, E04D 502

Patent

active

056163959

ABSTRACT:
A process for the production of a two-layer textile reinforcement for the production of bituminous sealing sheets for roofing consists first, from a first layer based on nonwoven cloth, in consolidating this nonwoven cloth by mechanical or hydraulic bonding and in thermostabilizing it. This first consolidated and thermostabilized layer is then assembled with a second mineral fiber layer, either by counter-gluing, or by needling, or by seam knitting. These two latter assembly methods are used only when the second mineral fiber layer is in the form of a grid or cloth of continuous or discontinuous mineral filaments. The first assembly method by counter-gluing is itself used no matter what the structure of the second mineral filament layer, whether it be in the form of a grid or a cloth of continuous or discontinuous mineral fibers or in the form of a scrim of mineral fibers.

REFERENCES:
patent: 4491617 (1985-01-01), O'Connor et al.
patent: 4539254 (1985-09-01), O'Connor et al.
patent: 4755423 (1988-07-01), Greiser
patent: 4762744 (1988-08-01), Woiceshyn et al.
patent: 4780350 (1988-10-01), O'Connor et al.
patent: 4987027 (1991-01-01), Zerfass
Ming-Hsiung Yen et al., Chapter II Nonwovens, Tai-Yih Enterprise Management Consultant Ltd., Nov. 1983.

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