Method of producing a microproduct
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United States of America Patent
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Dec 17, 2013
Grant Date -
May 20, 2010
app pub date -
Jan 27, 2010
filing date -
Dec 19, 2003
priority date (Note) -
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Abstract
A method of producing a microproduct comprises: providing a resin composition including 30 to 90 wt % of a polypropylene-based resin and 10 to 70 wt % of a hydrogenated derivative of a block copolymer shown by “X-Y” (X represents a polymer block immiscible with the polypropylene-based resin, Y represents an elastomeric polymer block of a conjugated diene that's miscible with the polypropylene-based resin after hydrogenation); attaching a silicon stamper to a mold cavity of an injection molding machine, the silicon stamper having micromachined features formed by etching the surface of a silicon plate; and precisely transferring the micromachined features of the silicon stamper to the resin composition by injecting the resin composition into the mold cavity, a resulting molded surface having recesses and/or protrusions that are 0.3 to 200 μm deep or tall and 0.3 to 100 μm wide.
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