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DAMPFBREMSE FUER DEN EINSATZ ZUR WAERMEDAEMMUNG VON GEBAEUDEN

Vapour barrier for use in thermal insulation of buildings - comprises film or coating of material with water vapour diffusion resistance which is dependent on environmental humidity.
 
: Kuenzel, H.; Grosskinsky, T.

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DE 1995-19514420 A: 19950419
DE 1995-19514420 A: 19950419
EP 1996-909977 AW: 19960418
WO 1996-DE705 A: 19960418
DE 19514420 C1: 19970306
EP 821755 B1: 20001129
E04B0001
E04B0001
Deutsch
Patent, Elektronische Publikation
Fraunhofer IBP ()

Abstract
A vapour barrier for use in the thermal insulation of buildings, consisting at least partly of material (I) having a water vapour diffusion resistance (sd) which is dependent on the ambient humidity, with sd values of 2-5 m and less than 1 m diffusion-equiv. air gap at 30-50% RH and 60-80% RH resp. Pref. material (I) may consist of film or a coating of polymer on a base material, pref. a substrate with a low water vapour diffusion resistance, esp. pref. a fibre-reinforced cellulose substrate. Material (I) may also be sandwiched between two layers of base material. Pref. film consists of polyamide 6, 4 or 3, with a film thickness of 10 mu to 2 mm, pref. 20-100 mu. Pref. coating material is polyvinyl alcohol, plastic dispersion, methylcellulose, linseed oil alkyd resin, bone glue or a protein deriv. USE - Used as a water vapour barrier in the thermal insulation of buildings, esp. for use in new buildings and in the renovation of old buildings. ADVANTAGE - Ensures water vapour exchange be tween the outside and inside of the building under different environmental conditions, to prevent excessive build-up of moisture and consequent damage to timber etc.

: http://publica.fraunhofer.de/dokumente/PX-8929.html