Breathable, non-linting laminate

Details Breathable, non-linting laminate Breathable, non-linting laminate

1987-11-13

1989-03-28

Cannon, James C.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

55486, 55487, 55524, 55528, 428251, 428252, 428285, 428286, 428287, 4283115, 4283166, 4283175, 4283177, 428422, 428922, B01D 3908, B01D 3916, B32B 2712

Patent

active

048163287

ABSTRACT:
A flexible, breathable, antistatic, non-flammable, filtering, non-linting, clean and cleanable composite laminate is provided. The laminate comprises a middle layer of a non-flammable fabric, preferably a polyamide or glass fabric, containing an antistatic agent, and a top and bottom layer each containing a sheet of porous, expanded polytetrafluoroethylene bonded to the middle layer by means of an adhesive between the middle layer and the top and bottom layers. Preferably the top and bottom layers comprise (a) a flexible, first layer of hydrophobic material having a moisture vapor transmission rate exceeding 1000 gms./m.sup.2 .multidot.day and an advancing water contact angle exceeding 90 degrees; and (b) a continuous hydrophilic layer attached to the first layer, the hydrophilic layer having a moisture vapor transmission rate exceeding 1000 gms./m.sup.2 .multidot.day and forming a barrier to passage of fluids with low surface tension, wherein the hydrophobic layers are both external to the middle layer. The laminate is useful as a cover for cleaned aerospace equipment during retrofitting, shipping and storage.

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patent: 4532316 (1985-07-01), Henn
patent: 4539021 (1985-09-01), Hager et al.
patent: 4582747 (1986-04-01), Hirakawa et al.
patent: 4612237 (1986-09-01), Frankenberg

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