C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
18/673
C08J 9/36 (2006.01) B29C 47/00 (2006.01) B65D 81/34 (2006.01) C08J 9/00 (2006.01) C08J 9/04 (2006.01) C08L 67/00 (2006.01)
Patent
CA 2036548
A process of producing a thermoplastic polyester series resin foamed material is disclosed, which comprises heating and further foaming a thermoplastic polyester resin foamed material having a crystallinity of not higher than 30% by bringing into contact with water or steam of at least 60°C and then heating the foamed material by bringing into contact with a heating medium other than water of at least 100°C to further foaming the foamed material. A process of producing a thermoplastic polyester series resin foamed material is also disclosed, which comprises heating and further foaming a thermoplastic polyester series resin foamed material having a crystallinity of not higher than 30% by bringing into contact with water to steam of at least 60°C, heating and further foaming the foamed material by bringing into contact with a heating medium other than water of at least 100°C, and molding the foamed material by a mold.
Cette invention concerne un procédé de fabrication d'un matériau en mousse de résine thermoplastique de la série des polyesters, qui comprend le chauffage et le moussage plus poussé d'un tel matériau à cristallinité ne dépassant pas 30 % par mise en contact avec de l'eau ou de la vapeur à au moins 60 degrés Celsius, puis le chauffage du produit ainsi obtenu par mise en contact avec un agent chauffant autre que de l'eau dont la température est d'au moins 100 degrés Celsius. Cette invention concerne également ce procédé de fabrication suivi du moulage en coquille du produit obtenu.
Amano Norio
Hirai Takaaki
Taki Takeshi
Riches Mckenzie & Herbert Llp
Sekisui Kaseihin Kogyo Kabushiki Kaisha
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