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US 2015/0090126 A1Published application
Vapour-barrier membrane based on a pa666/evoh blend
AssigneeSaint-Gobain Isover
InventorsDevang Khariwala, Valerio Massara
Life of this patent
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Abstract
The invention relates to a vapor retarder membrane, intended to be used for improving the airtightness of a building or of a room, comprising at least one active layer having a water vapor permeability which increases with the surrounding relative humidity, said active layer comprising at least 90% by weight of a blend of ethylene/vinyl alcohol (EVOH) copolymer and of a copolyamide 6-6.6 (PA666), the latter having a melting point below 210° C.
Claims14
A vapor retarder membrane, comprising an active layer having a water vapor permeability configured to increase with surrounding relative humidity,
- wherein the active layer comprises at least 90% by weight of a blend of ethylene/vinyl alcohol (EVOH) copolymer and of a copolyamide 6-6.6 (PA666) having a melting point below 210° C. and
- wherein the membrane is configured for improving airtightness of a building or of a room.
Dependencies are inferred from the claim text.