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 ?m deep or tall and 0.3 to 100 ?m wide.
Type:
Grant
Filed:
January 27, 2010
Date of Patent:
December 17, 2013
Assignees:
Richell Co., Ltd., Toyama Prefecture, National University Corporation Toyama University
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 ?m deep or tall and 0.3 to 100 ?m wide.
Type:
Application
Filed:
January 27, 2010
Publication date:
May 20, 2010
Applicants:
RICHELL CO., LTD., TOYAMA PREFECTURE, NATIONAL UNIVERSITY CORPORATION TOYAMA UNIVERSITY