Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Shaping against forming surface
Reexamination Certificate
2005-04-22
2009-12-01
Johnson, Christina (Department: 1791)
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
Shaping against forming surface
C264S233000, C264S328700, C264S050000, C427S282000, C427S256000
Reexamination Certificate
active
07625514
ABSTRACT:
A method for modifying a surface of a polymer such as a thermoplastic resin is provided, in which a supercritical fluid, especially carbon dioxide in a supercritical state is used as a solvent, and the polymer surface is further converted to have highly advanced function or high performance in a short period of time. In the method for modifying the polymer surface of the present invention, a solute is previously applied to the polymer surface. Accordingly, the solute can be permeated into the surface of the polymer swelled by the contact of the supercritical fluid. When this method is used, it is possible to permeate the solute into the polymer at a high concentration in a short period of time.
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Oshima Masahiro
Yusa Atsushi
Hauth Galen
Hitachi Maxell Ltd.
Johnson Christina
Oliff & Berridg,e PLC
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