Water vapour control, which is arranged facing the inside of a building
AssigneeDsm IP Assets B.V.
InventorPascal Maria Hubert Pierre Tijssen
Life of this patent
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Abstract
Water vapour control, which is arranged facing the inside of a building, comprising a first layer having a water vapour diffusion resistance (sd-value) of 1-5 meters diffusion-equivalent air space width, measured at a relative humidity of an atmosphere surrounding the layer of 30-50%, and having a Sd-value of <1 meters diffusion-equivalent air space width, measured at a relative humidity of 60-80%, and a second layer having a Sd-value of >0.6 meters diffusion-equivalent air space width, measured at a relative humidity of 80-100%.
Claims7
Water vapour control, which is arranged facing the inside of a building, comprising a first layer having a water vapour diffusion resistance (Sd-value) of 1-5 meters diffusion-equivalent air space width, measured at a relative humidity of an atmosphere surrounding the layer of 30-50%, and having a Sd-value of <1 meters diffusion-equivalent air space width, measured at a relative humidity of 60-80%, characterized in that the vapour control comprises a second layer having a Sd-value of >0.2 meters diffusion-equivalent air space width, measured at a relative humidity of 80-100%,
Dependencies are inferred from the claim text.