Patent ID: 8609009
Filing Date: 2013-12-17
Classification: B29C,C08L

Abstract:
1. A method of producing a microproduct comprising: 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 the general formula “X-Y” (X represents a polymer block immiscible with the polypropylene-based resin, and Y represents an elastomeric polymer block of a conjugated diene that is 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 molded surface formed using the resin composition having a plurality of recesses and/or protrusions, a depth of each recess or a height of each protrusion being 0.3 to 200 μm, and a width of an opening of each recess, a width of each protrusion, or a circumscribed or inscribed circle diameter of each recess or each protrusion being 0.3 to 100 μm.