A - Human Necessities – 41 – D
Patent
A - Human Necessities
41
D
154/84
A41D 31/02 (2006.01) B32B 7/00 (2006.01) B32B 27/12 (2006.01) D06N 3/00 (2006.01) D06N 3/04 (2006.01) D06N 3/18 (2006.01)
Patent
CA 1198045
ABSTRACT OF THE DISCLOSURE ELASTOMERIC WATERPROOF LAMINATE This invention provides a waterproof and breathable elastomeric polytetrafluoroethylene layered article for use in, for example, material for protective articles. The waterproof and breathable polytetrafluoroethylene layered article can for example, exhibit elastomeric properties of stretch to break of 275% in the machine direction, and 145% in the transverse direction and a total stretch recovery of at least 39% after being stretched to 75% extension for 100 cycles. This invention further provides a waterproof and breathable elastomeric polytetrafluoroethylene layered article bonded to a stretch fabric. The waterproof and breathable elastomeric polytetrafluoroethylene layered article bonded to a stretch fabric is thus durable and possesses a moisture vapor transmission rate exceeding 1000 gms/m2 day, and preferably above about 2000 gms/m2 day.
441442
Grubb Linda J.
Wilson Frederic T.
Worden Dexter
Gore (w. L.) & Associates Inc.
Gowling Lafleur Henderson Llp
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