Mould for contact lens, arrangement method and manufacturing method of contact lens
A technology for contact lenses and a manufacturing method, which can be applied to household appliances, other household appliances, applications, etc., can solve the problems of poor surface hydrophilicity of contact lenses, complex contact lenses and contact lenses, etc., and achieve stable and easy hydrophilic polymer layers. The effect of obtaining and preparing a simple process
Active Publication Date: 2015-09-23
SOUTHEAST UNIV
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- Application Information
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Problems solved by technology
However, these post-processing methods have brought more complicated problems to the process of making contact lenses and the contact lenses themselves.
Therefore, there is a need for a method that does not require post-treatment of contact lenses to improve the problem of poor hydrophilicity of the surface of contact lenses containing siloxane
Method used
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Embodiment Construction
[0024] The embodiments of the present invention will be described in detail below.
[0025] This embodiment provides a mold for a contact lens, the inner surface of the mold is coated with a hydrophilic polymer layer.
[0026] Existing molds for making contact lenses do not have any hydrophilic polymer layer on their inner surfaces. The inner surface of the mold provided by the embodiment of the present invention is coated with a hydrophilic polymer layer. During the curing process of the contact lens, the hydrophilic polymer layer will be transferred to the lens surface, so that the resulting lens surface has excellent hydrophilic properties. This role will be described in detail below. Preferred molds are PP molds and POM molds, and more preferred molds are EVOH molds.
[0027] The mold for making the contact lens is composed of an upper mold and a lower mold, and the upper mold and the lower mold are matched, and the cavity between the upper mold and the lower mold is use...
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Abstract
The invention discloses a mould for a contact lens. The inner surface of the mould is coated with a hydrophilic macromolecule layer. The invention further discloses an arrangement method of the mould for the contact lens. The arrangement method includes the following steps that (11) a hydrophilic macromolecule solution is prepared, stirred and heated; (12) the hydrophilic macromolecule solution is sprayed on the inner surface of the mould; (13) the mould coated with the hydrophilic macromolecule solution is dried. The invention further discloses a manufacturing method of the contact lens. According to the mould for the contact lens, the arrangement method and the manufacturing method of the contact lens, the mould is used for manufacturing the contact lens, hydrophilic treatment is carried on the surface of the mould, polymerization is carried out through the mould, and then the contact lens with good surface hydrophilicity is directly obtained without the need for aftertreatment on the contact lens.
Description
technical field [0001] The invention relates to a mold for a contact lens, a finishing method and a manufacturing method of a contact lens. Background technique [0002] Corneal silicone hydrogel contact lenses, commonly known as contact lenses, are a medical material that can correct vision and beautify the eyes. Compared with ordinary glasses, it can not only correct vision, but also not affect the beauty of the human body, so it is widely consumed reader's favorite. Corneal silicone hydrogel contact lenses can be divided into gas-impermeable rigid silicone hydrogel contact lenses, gas-permeable rigid silicone hydrogel contact lenses, ordinary soft silicone hydrogel contact lenses and high oxygen-permeable soft silicone hydrogel contact lenses. With the development of materials and people's growing awareness of eye protection, soft corneal silicone hydrogel contact lenses with high oxygen permeability will become more and more popular in the market and consumers. [000...
Claims
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IPC IPC(8): B29C39/26B29C39/02B29C33/38B29L11/00
Inventor 姜勇谢海姣王涛赵正柏安双双
Owner SOUTHEAST UNIV