Process for regenerating laminated thermoplastic molded...

B - Operations – Transporting – 29 – B

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B29B 17/02 (2006.01) B02C 13/22 (2006.01) B03B 9/06 (2006.01) B04C 5/26 (2006.01) B07B 7/06 (2006.01) B07B 13/00 (2006.01) B07B 13/11 (2006.01) B02C 23/16 (2006.01)

Patent

CA 2185199

The present invention is intended to, from thermoplastic molded resin articles composed by a variety of laminating thermoplastic resin materials, separate, classify, select and recover the thermoplastic resin materials with classification in terms of type for reusing these materials. The process of the present invention comprises at least a step where laminated molded articles comprised by a variety of laminating thermoplastic resin materials are coarsely crushed into a plurality of small pieces to be treated; a step where impact type frictional crushing force is applied to said coarsely crushed small pieces 82 to be treated so that the above-mentioned small pieces 82 to be treated are peeled or separated, granulated or size-regulated, or pulverized with classification in terms of type; and a step where the resultant granulated or size-regulated particle-form thermoplastic resin materials 83 are selected so as to be particle-form thermoplastic resin materials 83a, 83b with classification in terms of type by means of rolling selecting or this rolling selecting and gravity selecting.

La présente invention concerne un procédé permettant de séparer, de trier selon le type et de récupérer en vue de leur réutilisation les différentes résines thermoplastiques constituant les couches superposées d'articles en stratifié moulé. Ce procédé comprend au moins les étapes suivantes : 1) les articles en stratifié moulé sont grossièrement broyés; 2) les fragments 82 issus du broyage sont soumis à une force d'impact et de cisaillement afin de séparer les couches du stratifié et de broyer les fragments plus finement ou de les pulvériser de manière à obtenir des fragments ou des particules de grosseur uniforme; 3) les fragments ou particules 83 de résines thermoplastiques sont triés par types pour obtenir les matériaux 83a et 83b par roulement ou roulement et gravité.

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