Release film

Stock material or miscellaneous articles – Composite – Of polyester

Reexamination Certificate

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Details

C428S349000, C428S431000

Reexamination Certificate

active

07407712

ABSTRACT:
It is an object of the present invention to provide a release film which is superior in the flexibility at high temperature, the conformability to circuit patterns, the heat resistance, the releasing property and the non-contaminative property, and easily discarded after use.The present invention relates to a release film, which is used in a manufacturing process of a printed-circuit board, a flexible printed-circuit board or a multilayer printed-circuit board, having a layer comprising a resin composition comprising a resin having a polar group in a main chain as a matrix and having a halogen content of 5% by weight or less on at least one surface.

REFERENCES:
patent: 5080979 (1992-01-01), Shigemoto et al.
patent: 1 135 012 (2001-09-01), None
patent: 1 302 496 (2003-04-01), None
patent: 1 453 364 (2004-09-01), None
patent: H2-175247 (1990-07-01), None
patent: H5-283862 (1993-10-01), None
patent: 2002-252458 (2002-09-01), None
patent: 2003-012829 (2003-01-01), None
patent: 2003-313313 (2003-11-01), None
patent: 2003-327655 (2003-11-01), None
patent: 2004-002592 (2004-01-01), None
patent: 2004-002593 (2004-01-01), None
patent: 2004-002789 (2004-01-01), None
patent: WO 90/11182 (1990-10-01), None
patent: WO 03/009655 (2000-01-01), None
patent: WO 00/28798 (2000-05-01), None
XP002439537 (for JP 2003-313313 A).

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