Treatment of hides

C - Chemistry – Metallurgy – 14 – B

Patent

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Details

C14B 1/26 (2006.01) C14C 15/00 (2006.01)

Patent

CA 2198150

A process and apparatus for treating animal skins or hides (10) comprises stretching the hide to extend it and to open the structure, and mounting the hide in a frame (15) by ties (12) extending between hide edge attachments (11) and the frame. The hide (10) while in the frame passes through multiple process operations involving sequentially applying treatment fluids under pressure. A pressure differential maintained across the hide thickness enables the fluids to pass through the flesh surface (10a) and emerge from the grain surface (10b). The hide (10) can be supported on a porous backing membrane (45) during treatment. The treatment fluids are collected and processed for recycling, recovery of by-products and disposal.

Un procédé et un appareil, qui permettent de traiter des peaux animales (10), impliquent de tendre la peau pour l'étirer et en ouvrir la structure, puis de monter la peau sur un cadre (15) avec des liens (12) reliant ce cadre à des attaches placées sur les bords de la peau. Celle-ci (10), une fois disposée sur ce cadre, subit de multiples opérations consistant à lui appliquer sous pression des fluides de traitement successifs. Une différence de pression maintenue sur toute l'épaisseur de cette peau permet aux fluides de traverser la surface côté chair (10a) et de ressortir par la fleur (10b). Pendant ce traitement, la peau (10) peut prendre appui sur une membrane de support poreuse (45). Les fluides de traitement sont collectés et traités en vue d'un recyclage, de la récupération des sous-produits, et de l'élimination desdits fluides.

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