Process for producing plastic lens and apparatus for producing plastic lens
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Jun 14, 2022
Grant Date -
Mar 28, 2019
app pub date -
Jun 13, 2016
filing date -
Jun 15, 2015
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A process for producing a plastic lens includes a step of stirring and mixing a solution including a polymerization reactive compound in a preparation tank; a step of transferring the polymerizable composition obtained in the step from the preparation tank to a lens casting mold; a step of curing the polymerizable composition; and a step of obtaining a plastic lens molded product by separating the obtained resin from the lens casting mold. The step of transferring the polymerizable composition includes a step of re-mixing the polymerizable composition discharged from the preparation tank and injecting the polymerizable composition into the lens casting mold.
First Claim
Family
International Classification(s)
- C08G:MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN B....
- B29C:SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTAN....
- B29D:PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FRO....
- B29B:PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE ....
- G02B:OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
- B29K:INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, ....
- B29L:INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RE....
- C08L:COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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