B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
117/88.5
B32B 3/26 (2006.01) A61L 15/24 (2006.01) A61L 15/26 (2006.01) A61L 15/42 (2006.01) B05D 5/00 (2006.01) B32B 5/18 (2006.01) C08J 5/18 (2006.01) C08J 9/42 (2006.01) D06N 3/04 (2006.01)
Patent
CA 1260335
33427 CAN 2A Waterproof, Moisture-Vapor Permeable Sheet Material and Method of Making the Same Abstract of the Disclosure A waterproof, moisture-vapor permeable unitary sheet material comprises a microporous polymeric matrix having pores comprising continous passages extending through its thickness and opening into the opposite surfaces thereof, the passages being sufficiently filled with a moisture-vapor permeable, water-impermeable, hydrophilic material to prevent the passage of water and other liquids through the unitary sheet material while readily permitting moisture vapor transmission therethrough rendering the sheet material breathable. The unitary sheet is made by causing a liquid composition comprising the hydrophilic material or precursor thereof to flow into the pores of the matrix, then causing the conversion thereof to solid hydrophilic material.
496090
Minnesota Mining And Manufacturing Company
Smart & Biggar
LandOfFree
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