Method for making mold
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United States of America Patent
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-
Jul 10, 2012
Grant Date -
Nov 18, 2010
app pub date -
Nov 4, 2009
filing date -
May 14, 2009
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method for making a mold, the method includes steps of: providing a substrate and a retaining member, the retaining member being made of polytetrafluoroethylene, and being ring-shaped; engaging the substrate with the retaining member; disposing viscous liquid polydimethyl siloxane containing material on the substrate within the retaining member; rotating the retaining member and the substrate to cause the polydimethyl siloxane containing material to spread out on the substrate and form a polydimethyl siloxane containing layer; press-molding the polydimethyl siloxane containing layer using a stamper to form one or more molding portions on the polydimethyl siloxane containing layer; solidifying the polydimethyl siloxane containing layer with the one or more molding portions; separating the stamper from the polydimethyl siloxane containing layer; and separating the substrate from the retaining member to obtain a mold.
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