B - Operations – Transporting – 08 – B
Patent
B - Operations, Transporting
08
B
B08B 3/10 (2006.01) B08B 1/02 (2006.01) B08B 3/04 (2006.01) B08B 3/08 (2006.01) B08B 7/04 (2006.01) D06B 1/00 (2006.01) D06B 3/00 (2006.01) F26B 5/04 (2006.01) F26B 7/00 (2006.01)
Patent
CA 2260242
A method of cleaning polyurethane foams where the material is transported through a wash station while alternately soaking the polyurethane foam in an organic solvent and squeezing the solvent from the polyurethane foam a number of times. Then the polyurethane foam is sent through a rinse or solvent transfer station for reducing the concentration of solvent in the foam. The rinsed polyurethane foam is sent to a drying station wherein the foam is repeatedly squeezed while being exposed to hot air to remove wet air from the foam.
Procédé de nettoyage de mousses en polyuréthanne consistant à faire passer la matière dans une station de lavage tout en baignant alternativement la moussse polyuréthanne dans un solvant organique et en exprimant le solvant de la mousse polyuréthanne un certain nombre de fois. La mousse polyuréthanne passe ensuite dans une station de rinçage ou de transfert de solvant afin de réduire la concentration de solvant dans la mousse. La mousse polyuréthane rincée est envoyée dans une station de séchage dans laquelle la mousse est comprimée plusieurs fois alors même qu'elle est exposée à de l'air chaud pour éliminer l'air humide présent dans la mousse.
Daniels Edward
Jody Bassam
Libera Joseph A.
Osler Hoskin & Harcourt Llp
The University Of Chicago
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