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:
Jan. 22, 2019
Filed:
Oct. 13, 2015
Jsp Corporation, Tokyo, JP;
Mitsuru Shinohara, Yokkaichi, JP;
Masaharu Oikawa, Yokkaichi, JP;
JSP CORPORATION, Tokyo, JP;
Abstract
Polylactic acid-based resin expanded beads obtained by releasing a softened, pressurized foamable resin composition, which has a polylactic acid-based resin and a physical blowing agent, to a low pressure atmosphere to foam and expand the resin composition, where the polylactic acid-based resin satisfies the conditions (1) to (3) shown below, and exhibits excellent secondary expansion properties and fusion bonding properties. A polylactic acid-based resin expanded beads molded article obtained by in-mold molding of the polylactic acid-based resin expanded beads exhibits excellent mechanical properties.MT≤30 mN  (1)log MT≤0.93 log η−1.75  (2)CT≥600 sec  (3)where MT represents a melt tension [mN] at 190° C., η represents a melt viscosity [Pa·s] at 190° C. and a shear speed of 20 sec, and CTrepresents a half crystallization time [sec] at 110° C.