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Production technology for preparing soft condom under low temperature and long time vulcanization by stages

A production process and staged technology, which is applied in the field of latex vulcanization in the production of condoms, can solve the problems of poor transparency and softness, short time, high vulcanization temperature, etc., and achieve improved transparency and softness, reduced usage, and uniform vulcanization reaction Effect

Inactive Publication Date: 2012-07-25
QINGDAO DOUBLE BUTTERFLY GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing condom production process adopts a one-time vulcanization process. In the vulcanization process of raw latex, all raw materials such as sulfur are put into the vulcanization tank at one time. The use of sulfur is large, the vulcanization temperature is high, and the time is short. The vulcanization reaction is uneven, and the transparency and softness of the finished product are poor

Method used

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  • Production technology for preparing soft condom under low temperature and long time vulcanization by stages

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The step-by-step vulcanization of the present invention prepares soft condom production technology, comprises the following steps of carrying out successively:

[0021] A) Raw material ratio, select the weight and number ratio of dry state raw material as follows:

[0022] 0.65-0.80 parts of sulfur, 0.40-0.60 parts of zinc oxide, 0.40-0.65 parts of zinc dibutyldithiocarbamate, 0.20-1.00 parts of 2,6-di-tert-butyl-4-methylphenol, 0.10 parts of potassium hydroxide -0.25 parts, 0.10-0.30 parts of fatty alcohol polyoxyethylene (20) ether, 0.10-0.30 parts of sodium hexametaphosphate, 0.10-0.30 parts of sodium methylene dinaphthalene sulfonate, 100 parts of raw latex; Deionized water is mixed to form an aqueous solution or an emulsion dispersed in water, and its mass concentration or solid mass ratio is: 60% of raw latex, 50% of sulfur, 50% of zinc oxide, and 50% of zinc dibutyldithiocarbamate , 2,6-di-tert-butyl-4-methylphenol 40%, potassium hydroxide 25%, fatty alcohol pol...

Embodiment 2

[0032] With embodiment 1, in step A, the weight and number ratio of described dry state raw material is as follows

[0033] 0.70 parts of sulfur, 0.50 parts of zinc oxide, 0.50 parts of zinc dibutyldithiocarbamate, 0.60 parts of 2,6-di-tert-butyl-4-methylphenol, 0.15 parts of potassium hydroxide, fatty alcohol polyoxyethylene ( 20) 0.20 parts of ether, 0.20 parts of sodium hexametaphosphate, 0.20 parts of sodium methylene dinaphthalenesulfonate, 100 parts of raw latex.

Embodiment 3

[0035] With embodiment 1, in step A, the weight and number ratio of described dry state raw material is as follows

[0036] 0.80 parts of sulfur, 0.60 parts of zinc oxide, 0.55 parts of zinc dibutyldithiocarbamate, 1.00 parts of 2,6-di-tert-butyl-4-methylphenol, 0.25 parts of potassium hydroxide, fatty alcohol polyoxyethylene ( 20) 0.30 parts of ether, 0.30 parts of sodium hexametaphosphate, 0.30 parts of sodium methylene dinaphthalene sulfonate, 100 parts of raw latex.

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Abstract

The invention relates to a production method of a soft condom, which is a grading, low temperature, and long time vulcanization technology and a vulcanization formula. The production method comprises steps of burdening, a first grade vulcanization, a second stage vulcanization, dipping usage and the like. According to the invention, the consumption of sulfur is reduced to reduce the concentrationof a vulcanizing agent, time prolongation and grading vulcanization are used to reach a purpose of a full reaction, an one-time addition of all compounding aids is changed into separated additions ofthe vulcanizing agent and a vulcanizing activator to prolong the vulcanization time, a two grade vulcanization method and stirring time prolongation are adopted to improve the vulcanization efficiency to completely carry out a crosslinking reaction on the vulcanizing agent, and the latex maturation time prolongation allows properties of a compounding colloid to gradually tend to a stable state and is in favor of subsequent further dipping processing. The transparency and the softness of produced products are obviously improved.

Description

technical field [0001] The invention relates to a latex vulcanization method for producing condoms, that is, a vulcanization formula and a production process for preparing soft condoms by vulcanizing at low temperature and for a long time in stages. Background technique [0002] Natural latex rubber condoms are rubber film products made of vulcanized natural latex film-forming properties. They are mainly used to prevent the spread of diseases and contraception. With the demand of domestic and foreign markets, consumers' requirements for condom products are constantly increasing. Improvement, in addition to the safety performance of condoms, consumers have put forward higher requirements for the internal quality of products such as the comfort of use, that is, the softness of the product, the transparency of the product and the smell of the product. For consumers, comfort and Good feeling is the most important, which requires us to meet the requirements by improving formula a...

Claims

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Application Information

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IPC IPC(8): C08L7/02C08K13/02C08K3/06C08K3/22C08K5/39C08K5/13C08K5/42B29C35/00
Inventor 张帆刘翠玲张宁秦桂娥盛冰冰
Owner QINGDAO DOUBLE BUTTERFLY GROUP