E - Fixed Constructions – 04 – C
Patent
E - Fixed Constructions
04
C
E04C 2/04 (2006.01) B28B 3/00 (2006.01) B28B 11/00 (2006.01)
Patent
CA 2447701
Platerboard panels (A, B) formed by layers of cardboard (1,3) with a sandwiched plaster sheet (2) and by layers of cardboard (4,6) with a further sandwiched plaster sheet (5), are clamped between a female half mold part (C) and a male half mold part (D) of a forming press, are spread with vinyl adhesive or other suitable water-based adhesive at the layers of cardboard (3, 4). In each one of the two panels, the plaster sheet (2, 5) is fractured radially and the layer of cardboard (3) on the outside of the curvature is stretched and the layer (4) on the inside is compressed. The bonding of the layer of cardboard (3) of the first panel (A) to the layer of cardboard (4) of the second panel (B) forces the two panels to a permanent, stable equilibrium of the respective opposite curving tensions.
L'invention concerne des panneaux de plâtre (A, B) formés de couches de carton (1, 3) comportant une feuille de plâtre intermédiaire (2), et de couches de carton (4, 6) comportant une autre feuille de plâtre intermédiaire (5). Lesdits panneaux de plâtre sont pris entre un demi-moule femelle (C) et un demi-moule mâle (D) d'une presse de formage, et sont recouverts d'adhésif vinylique ou d'un autre adhésif aqueux adapté, au niveau des couches de plâtre (3, 4). Dans chacun des deux panneaux, la feuille de plâtre (2, 5) est fracturée radialement, la couche de carton (3) à l'extérieur de la courbure est étirée, et la couche (4) à l'intérieur est comprimée. Le collage de la couche de carton (3) du premier panneau (A) à la couche de carton (4) du deuxième panneau (B) crée un équilibre permanent forcé des tensions de flexion opposées respectives sur les deux panneaux.
Eurosistemi Italia S.r.l.
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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