Controlled geometry composite micro pellets for use in...

C - Chemistry – Metallurgy – 08 – K

Patent

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C08K 7/18 (2006.01) B29B 9/10 (2006.01) C08K 7/04 (2006.01) C08K 7/14 (2006.01) C08K 7/20 (2006.01) C08L 23/06 (2006.01) C08L 61/02 (2006.01) C08L 67/00 (2006.01) C08L 77/00 (2006.01) C08L 101/00 (2006.01)

Patent

CA 2756411

Compression molding methods of manufacturing a shaped article are provided. The methods include compression molding thermo-plastic resin-based material to provide a molded article, where thermoplas-tic resin-based material comprises a plurality of controlled geometry pel-lets. The pellets include at least one generally flat face having a cross-sec-tional shape with a rectangular envelope having an aspect ratio of at least 1.5. The controlled geometry pellets may include a plurality of reinforcing particulates dispersed throughout the thermoplastic resin. The reinforcing particulates typically have a largest dimension which is no more than about 90 % of the largest pellet dimension.

La présente invention a pour objet des procédés de moulage par compression pour la fabrication d'un article mis en forme. Les procédés comprennent le moulage par compression d'un matériau à base de résine thermoplastique pour fournir un article moulé, le matériau à base de résine thermoplastique comprenant une pluralité de pastilles à géométrie contrôlée. Les pastilles comprennent au moins une face globalement plate ayant une forme transversale possédant une enveloppe rectangulaire ayant un rapport d'aspect d'au moins 1,5. Les pastilles à géométrie contrôlée peuvent comprendre une pluralité de particules de renfort dispersées dans toute la résine thermoplastique. Les particules de renfort ont typiquement une dimension la plus grande qui n'est pas supérieure à environ 90 % de la dimension de pastille la plus grande.

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