Flexible crack spread preventing, separable web-type joining mat

Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor

Patent

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Details

52514, 156148, 428234, 428300, E04F 1300, E04F 1500, E02D 3700

Patent

active

054095646

ABSTRACT:
A rigid covering is joined to a concrete floor by a composite having a upper and lower nonwoven layers separated by a thin plastic film and interconnected by fiber bridges extending through holes in the film and formed by needle punching through the upper layer and the film. The lower layer is bonded to the floor with epoxy resin and a rigid covering is applied to the upper layer also with epoxy resin. The plastic film is non-adhering to the epoxy and the fiber bridges break in the vicinity of a crack in the concrete surface to locally delaminate the upper and lower layers of the composite and thus prevent transmission of the crack through the composite. The lower layer can be formed as a byproduct of the needle punching operation resulting in a thin adhesive conserving lower layer.

REFERENCES:
patent: 3953974 (1976-05-01), Bresson
patent: 4153750 (1979-05-01), Piguilloud
patent: 4230762 (1980-10-01), Iwasaki
patent: 4368844 (1983-01-01), Miller
patent: 4522876 (1985-06-01), Hiers
patent: 4976290 (1990-12-01), Gelin

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