Process for preparing expandable fibrous material

Details Process for preparing expandable fibrous material Process for preparing expandable fibrous material

E - Fixed Constructions

06

B

E06B 1/62 (2006.01) E04B 1/68 (2006.01)

Patent

CA 2355209

The present invention relates to a process for the manufacture of expandable elements having a determined shape, whereby a mass (1) consisting of organic fibres, which are expandable by the addition of a hydrophilic liquid, is compressed in one or more determined directions to a density of 300 to 1500 kg/m3, preferably 600 to 800 kg/m3, and that elements having the determined form are shaped from said mass, as well as an expandable element and its use.

L'invention concerne un procédé de fabrication d'éléments expansibles, présentant une forme prédéterminée, qui consiste à comprimer une masse (1) constituée de fibres organiques, expansibles par l'addition d'un liquide hydrophile, dans une ou plusieurs directions, de sorte qu'une densité de 300 à 1 500kg/m?3¿, de préférence 600 à 800 kg/m?3¿, soit obtenue, les éléments présentant la forme déterminée étant formés à partir de ladite masse. L'invention porte également sur un élément expansible et sur son utilisation.

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