Anti-yellowing high-breathability three-dimensional molded mask and preparation method thereof

By combining a three-layer three-dimensional molded mask structure with specific adhesives, the problems of poor breathability and yellowing have been solved, achieving high breathability and anti-yellowing effects, and improving the mask's aesthetics and wearing comfort.

CN122163002APending Publication Date: 2026-06-09SHENZHEN MINUS TECH CO LTD
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Patent Information

Application Number
CN202610422191.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-01
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing 3D molded masks have poor breathability and are prone to yellowing, especially under light, which affects their appearance and wearing comfort.

Method used

The three-layer molded mask consists of an outer layer, an inner layer, and a middle support layer. The middle support layer has a three-dimensional mesh structure and is bonded with adhesive to form an anti-yellowing sealing layer at the cut edges. The adhesive contains aliphatic PUR prepolymer, antioxidant system, and UV absorber, combined with physical pore-forming agents to improve breathability and light resistance.

Benefits of technology

It achieves high breathability and anti-yellowing performance of the mask, solving the problems of poor breathability and easy yellowing, and improving the aesthetics and comfort of wearing.

✦ Generated by Eureka AI based on patent content.
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Abstract

The invention discloses an anti-yellowing high-breathability three-dimensional molded mask and a preparation method thereof, and relates to the technical field of personal protective articles. The mask is formed by compounding a surface layer, a middle supporting layer with a three-dimensional mesh structure and an inner layer through mould pressing. The edge area of the mask forms an edge sealing layer through direct attachment of the surface layer and the inner layer, and the edge of the sandwich fabric is wrapped in the edge sealing layer; meanwhile, the adhesive permeates into edge meshes of the fabric of the middle supporting layer and wraps the fiber fracture surface to form an anti-yellowing packaging layer. According to the adhesive, an aliphatic PUR prepolymer is taken as matrix resin, and is compounded with an antioxidant system, an ultraviolet light absorber and a physical pore-foaming agent, so that multiple protection is realized. According to the preparation method, the middle area is coated in a dotted or latticed mode to improve the air permeability, and the mask with the three-dimensional outline is formed through two times of hot pressing. The problems that yellowing resistance is not achieved, the edge is scratchy, and air permeability is poor can not be considered at the same time are solved, and the three-dimensional mask which is long-acting, attractive, skin-friendly, comfortable and high in air permeability is obtained.
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