Method for producing panels consisting of an expanded...

B - Operations – Transporting – 29 – C

Patent

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Details

B29C 44/46 (2006.01) B29C 44/56 (2006.01)

Patent

CA 2677752

The invention relates to a method for making panels of an expanded renewable material, essentially starch, characterised in that it comprises the successive following steps: extruding unit members or strings having a small section and a substantial length L; assembling by juxtaposing and gluing these strings thus obtained along their longitudinal axis in order to produce a layer having a width A; superimposing and assembling by gluing at least two of said string layers in order to produce a block having a height B and a length L, said block thus exhibiting a section with a side A and a side B having dimensions related to the number of assembled unit members; and cutting said block transversally relative to the longitudinal axis along a length l in order to obtain plates having a maximal section of A x B with a selected thickness l. The invention also relates to a related device.

L'objet de l'invention est un procédé de réalisation de panneaux en matériau renouvelable expansé et dispositif associé, notamment à base d'amidon, caractérisé en ce qu'il comprend la succession des étapes suivantes - réaliser par extrusion des éléments unitaires ou joncs de faible section et de grande longueur L, - assembler de façon juxtaposée par collage ces joncs ainsi fabriqués, suivant leur axe longitudinal, pour réaliser une couche de largeur A, - superposer et assembler par collage au moins deux couches de joncs pour réaliser un bloc sur une hauteur B, d'une longueur L, le bloc ayant ainsi une section avec un côté A et un côté B de dimensions liées au nombre d'éléments unitaires assemblés, et couper ce bloc transversalement par rapport l'axe longitudinal sur une longueur I, de façon à obtenir des plaques de section maximale A x B et d'épaisseur I, choisie.

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