Title:
ポリ乳酸組成物、その発泡成形品と製造方法
Document Type and Number:
Japanese Patent JP5730856
Kind Code:
B2
Abstract:
An object of the present invention is to inexpensively provide a method and device of producing a high viscosity polylactic acid composition, which composition is appropriate for foam molding having a high expansion ratio and is stable, and a foam molded article having a high expansion ratio formed of said high viscosity polylactic acid composition. A method of producing a polylactic acid foam molded article of the present invention which can achieve the above-described object is characterized by comprising a step of mechanically grinding a polylactic acid composition by applying a shear force, using a device equipped with an injection molding machine (B) or an extrusion molding machine (G), an orifice portion (S) and a foaming mold (P), in a foaming gas atmosphere in the orifice portion (S). The above-described polylactic acid composition is obtained by mechanically grinding polylactic acid, which polylactic acid is cross-linked by polyisocyanate, by applying a shear force in an inert gas atmosphere, said polylactic acid composition obtained by the grinding being characterized by having an MI value of 0.05 or more and 5 or less, which MI value is measured at 190°C under a load of 21.6 kg in accordance with JIS K7210 (ISO 1133) ( Figure 2 ).
Inventors:
Uchiyama Kosuke
Kazunori Tsuda
Suzuki Tenya
Kazunori Tsuda
Suzuki Tenya
Application Number:
JP2012508345A
Publication Date:
June 10, 2015
Filing Date:
March 29, 2011
Export Citation:
Assignee:
Uchiyama Kosuke
Kazunori Tsuda
Kazunori Tsuda
International Classes:
C08L67/04; B29C48/37; B29C48/655; B29C48/76; C08J9/12; C08K3/26; C08K3/34; B29C48/03
Domestic Patent References:
| JP2007254522A | 2007-10-04 | |||
| JP2006224628A | 2006-08-31 | |||
| JP2009235316A | 2009-10-15 | |||
| JP2001098044A | 2001-04-10 | |||
| JP2009083484A | 2009-04-23 | |||
| JP2007254522A | 2007-10-04 | |||
| JP2006224628A | 2006-08-31 | |||
| JP2009235316A | 2009-10-15 | |||
| JP2001098044A | 2001-04-10 | |||
| JP2009083484A | 2009-04-23 |
Attorney, Agent or Firm:
Patent Business Corporation Minori Patent Office