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Sandwich Dyeing Process for Colored Contact Lenses

A contact lens, printing and dyeing technology, applied in glasses/goggles, optics, instruments, etc., can solve the problems of lens focal power deterioration, oxide layer generation, unclear, etc., achieve clear focus, improve hydrophilicity, Safe and comfortable to wear

Active Publication Date: 2020-12-29
凯乐康药业(重庆)股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the segmental polymerization of the lens, the molecular structure of the two layers will be different, and the contact surface of the two layers will also produce many problems such as an oxide layer, which will cause the focal power of the lens to become poor or unclear, etc.

Method used

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  • Sandwich Dyeing Process for Colored Contact Lenses
  • Sandwich Dyeing Process for Colored Contact Lenses
  • Sandwich Dyeing Process for Colored Contact Lenses

Examples

Experimental program
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Embodiment Construction

[0029] The implementation of the present invention will be described in detail below with reference to the drawings and examples, so as to fully understand and implement the implementation process of how to use technical means to solve technical problems and achieve technical effects in the present invention.

[0030] Please also refer to Figure 1 to Figure 3 , figure 1 It is a schematic diagram of the upper mold I of the embodiment of the present invention; figure 2 It is the upper mold II schematic diagram of the embodiment of the present invention; image 3 It is the lower mold schematic diagram of the embodiment of the present invention. As shown in the figure, a color contact lens sandwich dyeing process includes:

[0031] Design the upper mold I01 without optical function, the upper mold II06 with optical function on the outer arc surface, and the lower mold 11 with optical function on the inner arc surface.

[0032] The outer surface of the upper mold Ⅰ01 is provide...

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Abstract

The invention relates to a colorful contact lens sandwich soaking printing and dyeing process, which sequentially comprises the following steps of: 1) manufacturing an inner surface layer of a lens, 2) manufacturing a sandwich dip-dyed color layer of the lens, (3) manufacturing an outer surface layer of the lens, and (4) carrying out mold splitting, hydration, inspection, packaging and sterilization on the lens. According to the manufactured sandwich dip-dyed color contact lenses, the color layer is arranged in the middle of the non-optical area interlayer of the soft contact lens material, hydration is sufficient, stretching is complete, radian and corner transition is natural, the lens outer surface layer, the ink layer and the lens inner surface layer are well combined, clear focal power is achieved, the effects of improving hydrophilicity and moisture retention are achieved, dry eyes are prevented, the purpose that a consumer wears the lens safely and comfortably is achieved, and the color layer cannot fade.

Description

technical field [0001] The invention belongs to the technical field of contact lens processing, and in particular relates to a sandwich soaking printing and dyeing process for colored contact lenses. Background technique [0002] The earliest tinted contact lenses appeared to help people with eye injuries to cover eye blemishes. Later rice was widely used in film makeup. With the continuous improvement of people's living standards, it has multiple functions such as vision correction and beauty. Colored soft contact lenses are widely used in daily life. [0003] Contact lenses can be divided into three types according to the position and structure of the color layer: the first is that the color layer is coated on the inner surface of the contact lens material in the non-optical area; the second is that the color layer is coated on the outer surface of the contact lens material in the non-optical area Area. Both of these methods are to coat the colored layer on the surface o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02C7/04
CPCG02C7/04G02C7/049
Inventor 蔡庆财
Owner 凯乐康药业(重庆)股份有限公司
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