Title:
POLYLACTIC ACID COMPOSITION, FOAM-MOLDED ARTICLE THEREOF AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2011/122626
Kind Code:
A1
Abstract:
The object is to economically provide a method and device for producing a high-viscosity polylactic acid composition which is stable and suitable for foam-molding at a high expansion ratio, and a foam-molded article with a high expansion ratio which is formed of said polylactic acid composition. The above object can be achieved by a method for producing a foam-molded article of polylactic acid characterized by involving a step for using a device provided with an injection molding machine (B) or an extrusion molding machine (G), an orifice part (S) and a foaming mold (P) and mechanically grinding a polylactic acid composition by, in a foaming gas atmosphere, applying a shear force to the polylactic acid composition in the orifice part (S). The aforesaid polylactic acid composition is obtained by mechanically grinding polylactic acid, that has been crosslinked by polyisocyanate, by applying a shear force thereto in an inert gas atmosphere. The aforesaid method is characterized in that the polylactic acid composition, which is obtained by the grinding as described above, has an MI of 0.05 to 5 inclusive, when measured at 190oC under a load of 21.6 kg in accordance with JIS K7210 (ISO 1133).
Inventors:
UCHIYAMA, Kosuke (Mezondoru Okubun Room 302, 29-1, Higashijo, Okukaiinji, Nagaokakyo-shi, Kyoto 53, 〒6170853, JP)
内山 幸助 (〒53 京都府長岡京市奥海印寺東条２９番地１ メゾンドール奥文３０２ Kyoto, 〒6170853, JP)
TSUDA, Kazunori (5-14-16-105, Matsubara Setagaya-k, Tokyo 43, 〒1560043, JP)
内山 幸助 (〒53 京都府長岡京市奥海印寺東条２９番地１ メゾンドール奥文３０２ Kyoto, 〒6170853, JP)
TSUDA, Kazunori (5-14-16-105, Matsubara Setagaya-k, Tokyo 43, 〒1560043, JP)
Application Number:
JP2011/057822
Publication Date:
October 06, 2011
Filing Date:
March 29, 2011
Export Citation:
Assignee:
UCHIYAMA, Kosuke (Mezondoru Okubun Room 302, 29-1, Higashijo, Okukaiinji, Nagaokakyo-shi, Kyoto 53, 〒6170853, JP)
内山 幸助 (〒53 京都府長岡京市奥海印寺東条２９番地１ メゾンドール奥文３０２ Kyoto, 〒6170853, JP)
TSUDA, Kazunori (5-14-16-105, Matsubara Setagaya-k, Tokyo 43, 〒1560043, JP)
内山 幸助 (〒53 京都府長岡京市奥海印寺東条２９番地１ メゾンドール奥文３０２ Kyoto, 〒6170853, JP)
TSUDA, Kazunori (5-14-16-105, Matsubara Setagaya-k, Tokyo 43, 〒1560043, JP)
International Classes:
C08J9/12; B29C45/00; B29C47/00; C08G63/08; C08G63/91; C08G67/04; C08J3/12; C08K3/26; C08K3/34; C08L67/04; C08L101/16
Attorney, Agent or Firm:
MINORI Patent Profession Corporation (Chiyoda Seimei Kyoto Oike Bldg. 8F, 200 Takamiya-cho, Oike-dori Takakura Nishi-iru, Nakagyo-ku, Kyoto-sh, Kyoto 35, 〒6040835, JP)
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