Title:
METHOD FOR AUTOMATICALLY INJECTING MONOMER FOR OPTICAL MATERIAL INTO MOLD
Document Type and Number:
WIPO Patent Application WO/2020/091362
Kind Code:
A1
Abstract:
In the present invention, sealing tape is wrapped around the outer circumferential surface of an introduced mold, and a monomer solution is injected into a cavity formed therein, wherein the injection amount of the monomer solution can be precisely controlled by using a vision recognition system. According to a preferable embodiment, a monomer solution (S) of a monomer solution tank (10) is suctioned, in advance, into a syringe (20) capable of adjusting a capacity corresponding to a cavity of a mold (M); most of the monomer solution (S), which has been injected into the syringe (20), is firstly injected into the mold (M) at a high injection flow rate or injection speed; while the residual amount of the monomer solution (S) is secondly injected at a reduced injection flow rate or injection speed, it is finally confirmed, by using a vision recognition system, whether the monomer solution (S) is filled in the mold (M); and then injection is finished.
Inventors:
JANG DONG GYU (KR)
KIM JOON SUP (KR)
KIM JOON SUP (KR)
Application Number:
PCT/KR2019/014323
Publication Date:
May 07, 2020
Filing Date:
October 29, 2019
Export Citation:
Assignee:
KOC SOLUTION CO LTD (KR)
International Classes:
B29D11/00; G01N21/17
Foreign References:
| JP3258329B2 | 2002-02-18 | |||
| CN108582615A | 2018-09-28 | |||
| KR20140023727A | 2014-02-27 | |||
| JPH09254169A | 1997-09-30 | |||
| CN107443643A | 2017-12-08 | |||
| JP2008080766A | 2008-04-10 | |||
| KR200236704Y1 | 2001-10-10 | |||
| KR101383132B1 | 2014-04-08 | |||
| JP3707189B2 | 2005-10-19 |
Other References:
See also references of EP 3875259A4
Attorney, Agent or Firm:
YOU, Byung Sun (KR)
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