A purified physical time-delay natural rubber condom and its preparation method

By designing a waist structure in the condom, thickening the glans film, and using purified natural latex and improved vulcanization formula, the comfort and allergy risks of existing physical delay condoms are solved, and higher softness and elasticity are achieved, improving the user experience.

CN119751994APending Publication Date: 2025-04-04LEFUSI HEALTH IND CO
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Patent Information

Application Number
CN202411789782.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2024-03-13
Filing Date
2024-12-06
Publication Date
2025-04-04

AI Technical Summary

Technical Problem

While the existing physical delay condoms improve the delay function, they also lead to a decrease in user comfort, poor elasticity of the neck ring structure, and the allergic risk of natural rubber materials has not been resolved, affecting market promotion.

Method used

Design the condom profile with a bulb structure, increase the thickness of the glans membrane to reduce sensitivity, and adopt purified natural latex and improved vulcanization formulas, using new blending agents to improve reaction efficiency, reduce residues, and reduce allergies, while improving product flexibility and elasticity through the introduction of active nano zinc oxide and chitosan-based hydrogels.

Benefits of technology

It achieves the improvement of the softness and comfort of the condom on the basis of maintaining the physical delay effect, reduces the risk of allergies of the compound agent, improves the elasticity of the waist area, and enhances the overall performance of the product.

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Abstract

The invention discloses a purified physical time-delay natural rubber condom and a preparation method thereof. The preparation method comprises, by weight, the following steps: S1, mixing 0.05-0.08 parts of casein, 0.1-0.2 parts of dispersant, 0.1-0.2 parts of ammonia water, 1.0-1.2 parts of sulfur, 0.5-0.6 parts of active nano zinc oxide, 0.3-0.7 parts of accelerator and 1.0-1.2 parts of antioxidant to obtain a mixed dispersion; S2, mixing the mixed dispersion, 100 parts of purified natural concentrated latex and 0.03-0.08 parts of emulsifying wax, and pre-vulcanizing to obtain a mixture; S3, cooling the mixture, adding 0.1-0.2 parts of active nano zinc oxide, standing the mixture until the chloroform value reaches the standard, centrifugally sieving the mixture, and adjusting the solid content with water to obtain a rubber compound; S4, dipping a condom mold in an adsorption liquid and drying it, then dipping the condom mold in the rubber compound, and then drying the dipped condom mold. The present invention makes the product softer on the basis of strengthening the physical delay effect, especially improves the problem of discomfort caused by high hardness of the waist part, and solves the problem of allergy to protein and residual compounding agent.
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