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:
Jul. 23, 2013
Filed:
Jun. 07, 2006
Yutaka Araki, Tokyo, JP;
Seiji Hanatani, Chiba, JP;
Yutaka Araki, Tokyo, JP;
Seiji Hanatani, Chiba, JP;
K-Plasheet Corporation, Chiba, JP;
Abstract
There is disclosed an expansion molded product, and a web and stampable sheet suitable for use in the production thereof as well as a method of producing the same. A disclosed method of producing a web, stampable sheet and expansion molded product of a stampable sheet comprises uniformly dispersing reinforcing fibers, thermoplastic resin and thermal expandable particles in an aqueous medium containing a surfactant with fine foams to prepare a foamy solution, filtering the foamy solution to form a web, heating pressing and cooling the web to form a stampable sheet, heating the stampable sheet to expand the thermal expandable particles, and shaping and cooling the stampable sheet, wherein the expanded thermal expandable particles are eccentrically located toward one-side surface of the expansion molded product of the stampable sheet by removing foams by suction during the filtering and eccentrically locating the thermal expandable particles toward one-side surface of the web.