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Method for manufacturing lithe condoms

A condom, soft technology, applied in the field of preparation of soft condoms, can solve the problems of low burst pressure and aging resistance, slow pre-vulcanization process of latex, etc.

Inactive Publication Date: 2013-11-20
QINGDAO DOUBLE BUTTERFLY GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the burst pressure and aging resistance of pure polyisoprene latex condoms are lower than those of pure natural latex condoms, and the latex pre-vulcanization process is slower

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The preparation method of soft condom of the present invention comprises the following steps carried out successively:

[0014] A) Raw material ratio, select the weight and number ratio of dry state raw material as follows:

[0015] 1.00 parts of sulfur, 0.60 parts of zinc oxide, 0.70 parts of zinc diethyldithiocarbamate, 0.80 parts of 2,6-di-tert-butyl-4-methylphenol, 0.03 parts of potassium hydroxide, fatty alcohol polyoxyethylene ( 20) 0.20 parts of ether, 0.04 parts of sodium hexametaphosphate, 0.09 parts of sodium methylene dinaphthalene sulfonate, 60 parts of natural rubber latex, and 40 parts of polyisoprene latex; respectively add the aforementioned dry raw materials to deionized water to prepare The raw material aqueous solution or dispersion liquid with the mass concentration as follows: 60% natural latex, 50% isoprene latex, 50% sulfur, 50% zinc oxide, 50% zinc diethyldithiocarbamate, 2,6- Di-tert-butyl-4-methylphenol 40%, potassium hydroxide 25%, fatty alco...

Embodiment 2

[0024] With embodiment 1, in step A, the weight and number ratio of described dry state raw material is as follows

[0025] 1.50 parts of sulfur, 0.90 parts of zinc oxide, 0.90 parts of zinc diethyldithiocarbamate, 1.10 parts of 2,6-di-tert-butyl-4-methylphenol, 0.07 parts of potassium hydroxide, fatty alcohol polyoxyethylene ( 20) 0.30 parts of ether, 0.08 parts of sodium hexametaphosphate, 0.15 parts of sodium methylene dinaphthalene sulfonate, 90 parts of natural rubber latex, and 10 parts of polyisoprene latex.

Embodiment 3

[0027] With embodiment 1, in step A, the weight and number ratio of described dry state raw material is as follows

[0028] 1.20 parts of sulfur, 0.80 parts of zinc oxide, 0.80 parts of zinc diethyldithiocarbamate, 1.00 parts of 2,6-di-tert-butyl-4-methylphenol, 0.05 parts of potassium hydroxide, fatty alcohol polyoxyethylene ( 20) 0.25 parts of ether, 0.06 parts of sodium hexametaphosphate, 0.10 parts of sodium methylene dinaphthalene sulfonate, 70 parts of natural rubber latex, and 30 parts of polyisoprene latex.

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PUM

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Abstract

The invention relates to a method for manufacturing lithe condoms. The main composition in the raw materials is formed by mixing natural latex and polyisoprene. By adjusting conventional production process properly, the natural latex and the polyisoprene are well compatible, and performances of products can be complementary to each other, so that the condoms are lithe and comfortable. Anti-ageing performance of the condoms is improved as compared with that of condoms purely made of polyisoprene latex, and higher burst performance can be guaranteed. Latex is higher in mechanical stability during processing. Protein content of the condoms manufactured by the method is further lowered than that of the condoms purely made of natural latex.

Description

technical field [0001] The invention relates to a production method of a condom, namely a preparation method of a soft condom. Background technique [0002] The latex rubber condoms currently on the market are generally natural rubber film products, mainly used to prevent the spread of diseases and contraception. In addition to performance, consumers have high requirements for the internal quality of products such as the comfort of use, that is, the softness and protein content of the product. For consumers, comfort and good feeling without irritation and allergies are the most important. The properties of pure natural latex are greatly affected by the harvesting time of raw latex and the origin of latex, and the process control fluctuates greatly. Pure natural latex contains protein components. Some people are allergic to the protein contained in natural rubber, resulting in the use of pure natural latex condoms. limit. In recent years, the substitute materials for natura...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L7/02
Inventor 张宁刘翠玲郭丽芸曹堃
Owner QINGDAO DOUBLE BUTTERFLY GROUP