A method and apparatus for forming an article and an article...

B - Operations – Transporting – 29 – C

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B29C 43/02 (2006.01) B29B 17/00 (2006.01) B29C 43/18 (2006.01) B29C 43/52 (2006.01) B29C 70/34 (2006.01) B29C 70/42 (2006.01) B29C 35/02 (2006.01) B29C 43/00 (2006.01)

Patent

CA 2407268

A method for forming an article in which thermoplastics materials are used as the binding agent. Materials (21) are shredded in a shredder (1), compressed in a compressing chamber (15) and moulded in a moulding chamber (16, 17, 19, 20, 26, 27). The thermoplastics material is heated whilst the material is held under compression and then cooled to bind the material together. In one embodiment superheated steam is supplied via tubes (31) having apertures there along. In another embodiment superheated steam is supplied via apertures in side walls of the mould (58, 59). Blocks (62, 72) formed by the method and apparatus of the invention may find application as construction materials etc. and have good structural, thermal and acoustic properties.

La présente invention concerne un procédé permettant de former un objet, dans lequel des matériaux thermoplastiques sont utilisés comme agent de liaison. Des matériaux (21) sont broyés dans un dispositif de broyage (1), comprimés dans un compartiment de compression (15), et moulés dans un compartiment de moulage (16, 17, 19, 20, 26, 27). Le matériau thermoplastique est chauffé alors que ledit matériau est maintenu sous compression, puis refroidi pour faire s'agglomérer le matériau. Dans un mode de réalisation, de la vapeur à très haute température est fournie via des tubes (31) présentant des ouvertures sur leur longueur. Dans un autre mode de réalisation, de la vapeur à très haute température est fournie via des ouvertures pratiquées dans des parois latérales du moule (58, 59). Des blocs (62, 72) formés grâce au procédé et à l'appareil de l'invention, peuvent trouver des applications comme matériaux de construction etc., et ont de bonnes propriétés structurelles, thermiques et acoustiques.

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