The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 08, 2015
Filed:
Mar. 24, 2011
Mitsuru Shinohara, Yokkaichi, JP;
Masaharu Oikawa, Yokkaichi, JP;
Mitsuru Shinohara, Yokkaichi, JP;
Masaharu Oikawa, Yokkaichi, JP;
JSP CORPORATION, Tokyo, JP;
Abstract
An expanded bead of a polylactic acid resin, having an exterior surface, a surface region including the entire exterior surface and having a weight of one-sixth to one-fourth the weight of the expanded bead, and a center region located inside the surface region and having a weight of one-fifth to one-third the weight of the expanded bead, wherein the expanded bead, the surface region and the center region, after having been subjected to a pretreatment including a heat treatment at 110° C. for 120 minutes followed by cooling at a cooling speed of 2° C./min, have endothermic calorific values of (Br:endo), (Brs:endo) and (Brc:endo), respectively, when measured by heat flux differential scanning calorimetry at a heating speed of 2° C./min in accordance with JIS K7122 (1987), and wherein (Br:endo) is greater than 25 J/g and (Brs:endo) is smaller than (Brc:endo) and is not smaller than 0 J/g.