Method of producing a microproduct
US8609009B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jan 27, 2010 |
| Grant date | Dec 17, 2013 |
| Priority date | — |
| Expiry date | Oct 19, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2045/0094
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.