B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
B32B 27/30 (2006.01) B32B 15/08 (2006.01) B32B 27/08 (2006.01) E04B 2/92 (2006.01) E04C 2/20 (2006.01) E04C 2/24 (2006.01)
Patent
CA 2492821
The invention relates to a sandwich-type panel of the type which consist of different successive layers and which comprise, by way of an outer face and/or counter face, a film of a transparent acrylic polymer to which an insoluble or slightly-soluble transparent thermoplastic has been added to the organic solvents. According to the invention, the surface films on the face and counter face have similar thermal expansion coefficients and a similar moisture absorption coefficient and basic weight. The invention is suitable for use in construction.
L'invention concerne un panneau de type sandwich composé de plusieurs couches successives et présentant sur sa surface avant et/ou arrière un film transparent de polymère acrylique auquel a été ajouté un thermoplastique transparent insoluble, ou peu soluble, dans les dissolvants organiques. Les films des surfaces avant et arrière présentent des coefficients de dilatation thermique, un taux d'absorption d'humidité et un grammage similaires. L'invention s'applique au domaine de la construction.
Del Rio Carbajo Marcos
Oyarzabal Celarain Juan Ramon
Prodema S.a.
Robic
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