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Multi-functional soft contact lens mould

A soft contact lens and molding method technology, which can be applied to other household appliances, optical components, household appliances, etc., can solve problems such as wasting molds, and achieve the effects of low injection molding cost, simple hydration operation, and stable injection molding.

Active Publication Date: 2013-04-03
JIANGSU HORIEN CONTACT LENS
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  • Abstract
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Problems solved by technology

[0003] In view of the fact that the structural design and process requirements of the original mold will waste the lack of the mold, the purpose of the present invention is to provide a plastic mold with a slightly larger size, which can not only meet the needs of forming soft contact lenses, but also serve as a container for lens hydration, and can also serve as a Packaging container for finished lenses

Method used

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Embodiment Construction

[0022] The concrete implementation of the present invention is realized in the following manner, and the implementation of the mold structure design of this kind of production soft contact lens follows the following steps successively: the design and processing of metal mold core, the injection molding of plastic mold, the curing molding of lens, lens Hydration, lens encapsulation.

[0023] 1. Design and processing of the metal mold core: design the metal front mold core 01 of the lower mold with optical functions (attached figure 1 ) and the metal rear mold core 02 of the lower mold without optical function (attached figure 1 ); the upper mold metal rear mold kernel 04 with optical function (attached figure 2 ) and the upper mold metal front mold core 03 without optical function (attached figure 2 ). A concave ring 08 is also designed on the metal rear mold core 04 column wall of the upper mold, as a positioning ring for the lower mold, the ring is concave 0.15mm, and th...

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Abstract

The invention relates to a moulding method of a soft contact lens. The preparation method of the mould comprises the following steps: 1) designing and processing a metal core, 2) performing injection molding of the mould; 3) curing and forming a lens; 4) performing hydration of the lens; and 5) packaging the lens. The lens mould of the invention can be used to satisfy the forming of the soft contact lens and used as the hydration container of a semi-finished lens and as the packaging container of a finished lens too. The invention also has the advantages of stable injection, simple hydration operation and low injection low.

Description

technical field [0001] The invention relates to the mold structure design of soft contact lenses. The mold can be used as the molding of the soft contact lens, the hydration container of the soft contact lens, and the packaging container of the soft contact lens. Background technique [0002] At present, the two processes of molding and rotary molding in the production method of soft contact lenses need to use molds to customize the size of the lenses, and use special hydration containers for hydration, and the final product also needs to be packaged and protected with containers. This is because the molds of these two processes are only used as the carrier of the lens during hydration, and are discarded after the forming and demoulding hydration process. Therefore, a special container device is required for hydration of the lens, and a larger container is required for sealing the preservation solution and the lens at the same time. Contents of the invention [0003] In ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29D11/00
Inventor 蔡瑞钦王富和
Owner JIANGSU HORIEN CONTACT LENS
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