Breathable layered materials
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 7, 1992
Issued Date -
N/A
app pub date -
Apr 5, 1990
filing date -
Nov 13, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A flexible, breathable, non-linting, composite is provided. The laminate comprises a middle layer of a padding and a top and bottom layer comprising a sheet of porous water impermeable, moisture-vapor-permeable film bonded to the middle layer. Preferably the top and bottom layers comprise (a) a flexible, first sheet of hydrophobic material having a moisture vapor transmission rate exceeding 1000 gms./m.sup.2 .multidot.day; and (b) a continuous hydrophilic sheet attached to or penetrating the first sheet, the hydrophilic sheet having a moisture vapor transmission rate exceeding 1000 gms./m.sup.2 .multidot.day and forming a barrier to passage of fluids. The composite is useful in diverse applications such as a padding under orthopedic casts and as thermal insulation in wearing apparel.
First Claim
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International Classification(s)
Cited Art Landscape
Patent Citation Ranking
- 49 Citation Count
- A61F Class
- 0 % this patent is cited more than
- 33 Age