Plastic card

Details Plastic card Plastic card

2005-02-01

2005-02-01

Paik, Steven S. (Department: 2876)

Registers

Records

Conductive

C235S487000, C235S488000, C235S449000, C235S451000, C235S380000

Reexamination Certificate

active

06848622

ABSTRACT:
In a plastic card (10) for an embossing finish comprising a core material (12) and a sheath material (13), a breaking elongation of the core material (12) is 25% or less and a breaking elongation of the sheath material (13) is 130% or more. The ratio of the thickness of the core material to the thickness of the sheath material (13) occupied in the entire part of the plastic card is set to 20 to 53:10. Otherwise, a breaking elongation of the core material (12) is 50% or less and the tensile strength of the sheath material (13) is 100 MPa or more. The ratio of the thickness of the sheath material (13) to the thickness of the core material (12) occupied in the entire part of the card is set to 41 to 90:10. The breaking elongation of the core material (12) and the sheath material (13) or the tensile strength of the sheath material (13), and the ratio of thickness of the core material (12) to the sheath material (13) are adjusted so that the plastic card excellent in embossing characteristics and hardly generating cracks due to a repetitive bending fatigue is provided.

REFERENCES:
patent: 5356717 (1994-10-01), Choki et al.
patent: 5503891 (1996-04-01), Marshall et al.
patent: 5679440 (1997-10-01), Kubota
patent: 6098889 (2000-08-01), Ogawa et al.
patent: 0 548 933 (1993-06-01), None
patent: 04348176 (1992-12-01), None
patent: 05-139077 (1993-06-01), None
patent: 06-28660 (1994-02-01), None
patent: 09175062 (1997-07-01), None
patent: 2001-96956 (2001-04-01), None

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