MOLDING TOOL WITH A THREE DIMENSIONAL SURFACE RELIEF PATTERN AND METHOD OF MAKING THE SAME
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United States of America Patent
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Issued Date -
Feb 28, 2013
app pub date -
Mar 30, 2011
filing date -
Mar 30, 2011
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Abstract
A method of making a molding tool includes: preparing an imprinting master having a surface relief pattern; applying a curable material on a flexible film; embossing the curable material on the flexible film using the imprinting master so as to transfer the surface relief pattern to the curable material; curing the embossed curable material so as to form a patterned-and-cured material; attaching and conforming the flexible film to a non-planar surface of a model; forming a thin metal film over the patterned-and-cured material; electroforming a metal layer over the thin metal film so as to form a molding tool of the metal layer; and removing the molding tool from the thin metal film.
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