Abstract 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 DEG C. and then heating the foamed material by bringing into contact with a heating medium other than water of at least 100 DEG 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 DEG C., heating and further foaming the foamed material by bringing into contact with a heating medium other than water of at least 100 DEG C., and molding the foamed material by a mold.
A thermoplastic polyester series resin foamed material having a crystallinity of not higher than 30% and a water content of at least 2,000 ppm.
Claim 2
Dependent Claim
24 words
A thermoplastic polyester series resin foamed material having a crystallinity of not higher than 30% and a water content of at least 2,000 ppm.
Claim 3
Dependent Claim
89 words
A thermoplastic polyester series resin foamed molding having a crystallinity exceeding 30% produced by the process comprising heating and further foaming a thermoplastic polyester series resin foamed material having a crystallinity of not higher than 30% and a water content of at least 2000 ppm by ringing into contact with water or 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.
Claim 4
Dependent Claim
89 words
A thermoplastic polyester series resin foamed molding having a crystallinity exceeding 30% produced by the process comprising heating and further foaming a thermoplastic polyester series resin foamed material having a crystallinity of not higher than 30% and a water content of at least 2000 ppm by ringing into contact with water or 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.