摘要 |
<p>A process for producing a thermoplastic polyester resin foam comprising melting a thermoplastic polyester resin, mixing the molten resin with a blowing agent and extruding the mixture into a low-pressure zone to carry out expansion molding, characterized in that a compound having two or more acid anhydride groups per molecule, optionally together with a compound of a metal of Group I, II or III elements of the Periodic Table is added to the thermoplastic polyester resin. There is also disclosed a process for producing a thermoplastic polyester resin foam comprising cooling a high-temperature foam immediately after expansion and then re-heating the foam. Further, a thermoplastic polyester resin foam sheet and a food container prepared from the foam sheet are also disclosed.</p> |
申请人 |
SEKISUI KASEIHIN KOGYO K.K., NARA, JP |
发明人 |
AMANO, NORIO, YAMATO KORIYAMA-SHI, NARA, JP;TAKI, TAKESHI, NABARI-SHI, MIE 518-04, JP;HIRAI, TAKAAKI, TENRI-SHI, NARA 632, JP |