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:
Mar. 08, 2011
Filed:
Sep. 30, 2005
Kenichi Takase, Utsunomiya, JP;
Takashi Kawada, Kanuma, JP;
Akira Iwamoto, Utsunomiya, JP;
JSP Corporation, , JP;
Abstract
An object of the present invention is to provide a multi-layered polylactic acid resin foamed body of a crystalline polylactic acid resin which has good appearance and excellent mechanical strength such as bending strength and compressive strength and which is capable of being imparted with excellent heat resistance, and to provide a multi-layered polylactic acid resin foamed molded article having excellent appearance, heat resistance and mechanical strengh. The multi-layered polylactic acid resien foamed body of the present invention is a laminate having a polylactic acid resin foamed layer and a thermoplastic resin layer provided at least one side of the foamed layer, wherein the foamed layer has a cell shape satisfying specific conditions, wherein the difference (ΔH−ΔH) between an endothermic calorific value (ΔH) and an exothermic calorific value (ΔH) of the foamed layer as measured by heat flux differential scanning calorimetry at a heating rate of 2° C./min is less than 40 J/g, and wherein the endothermic calorific value (ΔH) is at least 10 J/g and the exothermic calorific value (ΔH) is at least 3 J/g.