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:
Feb. 01, 2005
Filed:
Sep. 03, 2002
Takao Kudo, Miyagi, JP;
Shinichi Matsumura, Miyagi, JP;
Satoko Asaoka, Miyagi, JP;
Sony Corporation, Tokyo, JP;
Abstract
In a plastic card () for an embossing finish comprising a core material () and a sheath material (), a breaking elongation of the core material () is 25% or less and a breaking elongation of the sheath material () is 130% or more. The ratio of the thickness of the core material to the thickness of the sheath material () occupied in the entire part of the plastic card is set to 20 to 53:10. Otherwise, a breaking elongation of the core material () is 50% or less and the tensile strength of the sheath material () is 100 MPa or more. The ratio of the thickness of the sheath material () to the thickness of the core material () occupied in the entire part of the card is set to 41 to 90:10. The breaking elongation of the core material () and the sheath material () or the tensile strength of the sheath material (), and the ratio of thickness of the core material () to the sheath material () are adjusted so that the plastic card excellent in embossing characteristics and hardly generating cracks due to a repetitive bending fatigue is provided.