Multilayer structure

Details Multilayer structure Multilayer structure

1989-04-19

1991-08-06

Bell, James J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

428246, 428234, 428253, 428282, 428284, 428286, 428287, 428297, 428298, 428300, B32B 700

Patent

active

050376926

ABSTRACT:
A multilayer structure which provides high strength under low distortion or elongation conditions without impairing the draining properties of conventional structures or the ease with which they can be transported or be made to conform to the earth surfaces over which they are laid. The multilayer structure of the invention comprises knitted or woven fabric layers and non-woven fabric layers multilaid together; the knitted or woven fabric layers consist of synthetic resin multifilaments oriented at least in one direction and having a tensile elastic modulus of 20 GPa or more, preferably 50 GPa or more, and a tensile strength of 1.2 GPa or more, preferably 1.5 GPa or more, while the non-woven fabric layers consist of long or short synthetic resin fibers arranged at random.

REFERENCES:
patent: 4230762 (1980-10-01), Iwasaki et al.

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