Pure polyurethane condom with adhesive layer, and preparation method of pure polyurethane condom

A polyurethane and adhesive layer technology, applied in coatings, male contraceptives, etc., can solve the problem that the strength is difficult to achieve ideal, and achieve the effects of optimized performance, low formula cost, and simple molding process

Inactive Publication Date: 2020-09-15
LANZHOU KESHI SICILY HEALTH TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, it is difficult for a single polyurethane resin to achieve ideal softness, burst performance, water resistance and strength. Therefore, it is of great significance to provide a new condom to achieve the best performance and meet the product market demand.

Method used

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  • Pure polyurethane condom with adhesive layer, and preparation method of pure polyurethane condom
  • Pure polyurethane condom with adhesive layer, and preparation method of pure polyurethane condom
  • Pure polyurethane condom with adhesive layer, and preparation method of pure polyurethane condom

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specific Embodiment approach

[0047] Such as image 3 As shown, the present invention also discloses another specific embodiment of the polyurethane condom 100 , the polyurethane condom 100 has a first polyurethane film layer 10 , a polyurethane adhesive layer 20 , a second polyurethane film layer 30 , and a third polyurethane film layer 40 .

[0048] Such as image 3 As shown, the first polyurethane film layer 10 , the polyurethane adhesive layer 20 , and the second polyurethane film layer 30 may have the same structure as above, for example.

[0049] Such as image 3 As shown, the third polyurethane film layer 40 is located on the second polyurethane film layer 30, based on obtaining the desired performance of the polyurethane condom 100, the structure of the third polyurethane film layer 40 is consistent with that of the second polyurethane film layer 30 The structure is not the same, for example, the performance is not the same, specifically, for example, the second polyurethane film layer 30 is a hi...

Embodiment 1

[0064] The raw material of described pure polyurethane condom comprises: polyurethane resin N (100% tensile modulus is 1.2N / mm 2 ), high-strength polyurethane resin A (tensile strength is 60MPa).

[0065] Clean the glass mold, heat the mold surface to 30°C, impregnate high-strength polyurethane resin A, and dry at 90°C; impregnate polyurethane resin N, control the thickness to 2 μm, and dry at 80°C; impregnate high-strength type Polyurethane resin A is dried at 100°C; after crimping, the product is dried at 120°C, impregnated with a release agent, and dried at 80°C. After demoulding, conduct electrical inspection, inner packaging, and outer packaging to prepare the ANA structure Layers of polyurethane condom 1.

Embodiment 2

[0067] The raw material of described pure polyurethane condom comprises: polyurethane resin N (100% tensile modulus is 1.0N / mm 2 ), high-strength polyurethane resin A (tensile strength is 60MPa), low-modulus polyurethane resin B (100% tensile modulus is 1.8N / mm 2 ), high elongation polyurethane resin C (elongation at break 700%).

[0068] Clean the glass mold, heat the mold surface to 40°C, impregnate high-strength polyurethane resin A, and dry at 110°C; impregnate polyurethane resin N, control the thickness at 1 μm, and dry at 100°C; impregnate low-modulus Type polyurethane resin B, dried at 110°C; impregnated polyurethane resin N, thickness controlled at 1 μm, dried at 100°C; impregnated with high-extensibility polyurethane resin C, dried at 120°C; after crimping The product is dried at 140°C, impregnated with a release agent, dried at 80°C, and after demoulding, undergoes electrical inspection, internal packaging, and external packaging to prepare a polyurethane condom 2 w...

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Abstract

The invention provides a pure polyurethane condom with an adhesive layer, and a preparation method of the pure polyurethane condom. The pure polyurethane condom with the adhesive layer at least comprises a first polyurethane film layer, a polyurethane adhesive layer and a second polyurethane film layer, wherein the polyurethane adhesive layer is positioned on the first polyurethane film layer; thesecond polyurethane film layer is positioned on the polyurethane adhesive layer; the 100% tensile modulus of the polyurethane adhesive layer is less than or equal to 2.5 N/mm<2>; and the structure ofthe first polyurethane film layer and the structure of the second polyurethane film layer are different from the structure of the polyurethane adhesive layer. According to the pure polyurethane condom provided by the invention, the properties, such as softness and strength, can reach the optimal properties; and the product market requirements are satisfied.

Description

technical field [0001] The invention belongs to the field of condom materials, in particular to a pure polyurethane condom with an adhesive layer and a preparation method thereof. Background technique [0002] Condom is currently the most widely used and simple device for contraception and prevention of sexually transmitted diseases in the world. The existing products mainly include natural latex rubber condoms and water-based polyurethane condoms. [0003] At present, due to the material characteristics of natural latex rubber, it is difficult to achieve a thickness of less than 0.04mm. At the same time, natural latex contains a variety of proteins, and there will be certain safety risks for people with protein allergies. With the improvement of people's living standards, consumers' demand for condoms is not only limited to the basic function of contraception, but people are more seeking the experience of using condoms. Polyurethane condoms are a new type of product on the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F6/04B29C41/14B29C41/22
CPCA61F6/04B29C41/14B29C41/22
Inventor 戴家兵李维虎冯林林陈亮
Owner LANZHOU KESHI SICILY HEALTH TECH CO LTD
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