Methods and apparatuses for casting polymer products
US11318692B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 17, 2018 |
| Grant date | May 3, 2022 |
| Priority date | — |
| Expiry date | Feb 16, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2071/022
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An example system for molding a photocurable material into a planar object includes a first mold structure having a first mold surface, a second mold structure having a second mold surface, and one or more protrusions disposed along at least one of the first mold surface or the second mold surface. During operation, the system is configured to position the first and second mold structures such that the first and second mold surfaces face each other with the one or more protrusions contacting the opposite mold surface, and a volume having a total thickness variation (TTV) of 500 nm or less is defined between the first and second mold surfaces. The system is further configured to receive the photocurable material in the volume, and direct radiation at the one or more wavelengths into the volume.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.