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Condom and preparation method thereof

A condom and film technology, which is applied to male contraceptives and other directions, can solve the problems of complex preparation process, low elasticity, poor barrier properties, etc., and achieve the effects of simple process, improved barrier properties, and high barrier efficacy.

Inactive Publication Date: 2011-06-01
CHEMCHINA ZHUZHOU RUBBER RES & DESIGN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention solves the technical problems of poor barrier property, low elasticity and complex preparation process of thermoplastic polyurethane condoms existing in the prior art

Method used

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  • Condom and preparation method thereof
  • Condom and preparation method thereof
  • Condom and preparation method thereof

Examples

Experimental program
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preparation example Construction

[0029] The present invention also provides a preparation method of the condom, comprising the following steps:

[0030] 1) Dip the rod-shaped mold in the inner latex, take it out and dry it to form the first layer of film on the surface of the rod-shaped mold;

[0031] 2) Dip the rod-shaped mold with the first layer of film on the surface into the middle layer of latex, take it out and dry it to form a second layer of film on the surface of the first layer of film;

[0032] 3) Dip the rod-shaped mold with the first film and the second film on the surface obtained in step 2) into the outer latex, take it out and dry it, and continue to form the third film on the surface of the second film;

[0033] 4) Demoulding and vulcanizing the product of step 3) to obtain the condom;

[0034] Wherein, the intermediate film is a water-based polyurethane film or a polyisoprene film.

[0035] In the present invention, the preparation method of the condom is not particularly limited, and the...

Embodiment 1

[0040] 1) Immerse the male condom rod mold in the inner latex, take it out and dry it, and form the first layer of film on the surface of the rod mold; the inner latex is water-based polyurethane latex.

[0041] 2) Dip the rod-shaped mold with the first layer of film on the surface into the middle layer latex, take it out and dry it to form a second layer of film on the surface of the first layer of film; the middle layer latex is water-based polyurethane latex.

[0042] 3) Dip the rod-shaped mold with the first film and the second film on the surface obtained in step 2) into the outer latex, take it out and dry it, and continue to form the third film on the surface of the second film; the outer latex It is water-based polyurethane latex.

[0043] 4) Demoulding and vulcanizing the product of step 3) to obtain the male condom S1 of this embodiment, as shown in figure 1 shown.

Embodiment 2

[0045] Adopt the method identical with embodiment 1 to prepare the condom S2 of the present embodiment, difference is:

[0046] In step 1), the female condom rod mold is used to replace the male condom rod mold in Example 1; the inner latex is water-based polyurethane latex with an antibacterial agent added;

[0047] In step 2), the middle layer latex is water-based polyurethane latex;

[0048] In step 3), the outer latex is water-based polyurethane latex with antibacterial agent added.

[0049] Through the above steps, obtain the female condom S2 of the present embodiment, such as image 3 shown.

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Abstract

The invention provides a condom, comprising a barrel provided with an open end and a closed end, wherein the barrel is composed of three elastic adhesive films which are integral and are an inner layer adhesive film, a middle layer adhesive film and an outer layer adhesive film from inside to outside respectively, and the middle layer adhesive film is a water-soluble polyurethane adhesive film or a polyisoprene adhesive film. The invention also provides a preparation method of the condom. The condom provided by the invention is improved in barrel structure and material, thus the comprehensive performances of the adhesive films are effectively improved and the condom provided by the invention has high barrier property; and meanwhile, the preparation process is simple.

Description

technical field [0001] The invention relates to family planning products, in particular to a condom and a preparation method thereof. Background technique [0002] Condoms are one of the most widely used contraceptives in the world. As the situation of AIDS prevention and treatment becomes more and more serious, the quality of condom products is getting more and more attention. At present, in the prior art, the main raw material for manufacturing condoms is natural rubber, but natural rubber contains many non-rubber components such as allergic water-soluble proteins, which cause some users to have allergic reactions or other adverse reactions to natural rubber. At the same time, condoms are disposable non-sterile medical devices, and because they have not passed through the disinfection and sterilization process, there are inevitably problems with microorganisms and bacteria. [0003] At present, the material used for condoms sold on the market is mainly natural latex, and...

Claims

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Application Information

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IPC IPC(8): A61F6/04B29C70/40
Inventor 李红兰肖迪娥邓红霞潘显智
Owner CHEMCHINA ZHUZHOU RUBBER RES & DESIGN INST
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