Method for preparing contact lens having polymer multilayer film

A contact lens, polymer film technology, applied in glasses/goggles, optics, instruments, etc., can solve problems such as poor adhesion, achieve high water content, improve comfort, and reduce costs

Inactive Publication Date: 2019-08-02
UNICON OPTICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this layer-by-layer coating has poor adhesion to the substrate

Method used

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  • Method for preparing contact lens having polymer multilayer film
  • Method for preparing contact lens having polymer multilayer film
  • Method for preparing contact lens having polymer multilayer film

Examples

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Embodiment Construction

[0019] The technical solutions of the present invention are further described below through specific examples, which do not represent limitations to the protection scope of the present invention. Some non-essential modifications and adjustments made by others according to the concept of the present invention still belong to the protection scope of the present invention.

[0020] Please refer to Figure 1 to illustrate the process steps of the preparation method of the contact lens with polymer multilayer film provided by the present invention; Schematic flow chart of the preparation method of the multilayer contact lens.

[0021] First, see step S100, as shown in FIG. 2A, a lens body 10 is provided. This lens body 10 is made of a monomer rich in chemically active groups, and there are multiple active groups on the surface of the lens body 10. a chemical group.

[0022] In the present invention, contact lens refers to an optical or medical article manufactured using any of the...

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Abstract

A method for preparing a contact lens having a polymer multilayer film is provided. The method includes chemically conjugating a polymer film to a surface of a lens body, and then producing another polymer film by utilizing ion adsorption between a negative charge and a positive charge of the polymer substance to form a polymer multilayer film comprising the two polymer films bonded well on the surface of the lens body. When the contact lens is worn, the polymer multilayer film provides a smoother touch to the surface of the eye, and a higher water content can be achieved, which improves the comfort of wearing.

Description

technical field [0001] The invention relates to a preparation method of a contact lens, in particular to a preparation method of a contact lens with a polymer multilayer film. Background technique [0002] The main problem that accompanies the use of contact lenses is dryness. Consequently, there has been a trend towards increased use of higher gas permeable materials in the manufacture of contact lenses, which has also driven the use of silicone-based materials. On the other hand, these materials are hydrophobic in nature and repel water. Even with plasma surface treatment to create a hydrophilic surface, these lenses may develop water-repelling regions, which result in reduced water-breakup time. These areas also have a tendency to attract more lipid and protein deposits. [0003] In order to improve these problems, contact lenses can be coated with the required materials on the surface. Coating materials can be selected according to the desired properties. Typically,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02C7/04
CPCG02C7/049
Inventor 罗彼夏王志中谢荣源张绫倩
Owner UNICON OPTICAL
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