CN102975321A - Method for preparing condom by using polyisoprene rubber latex - Google Patents
Method for preparing condom by using polyisoprene rubber latex Download PDFInfo
- Publication number
- CN102975321A CN102975321A CN2012103845299A CN201210384529A CN102975321A CN 102975321 A CN102975321 A CN 102975321A CN 2012103845299 A CN2012103845299 A CN 2012103845299A CN 201210384529 A CN201210384529 A CN 201210384529A CN 102975321 A CN102975321 A CN 102975321A
- Authority
- CN
- China
- Prior art keywords
- latex
- mixed
- sheath
- polyisoprene latex
- condom
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229920000126 latex Polymers 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 42
- 229920001195 polyisoprene Polymers 0.000 title claims abstract description 41
- 239000004816 latex Substances 0.000 claims abstract description 53
- 230000008569 process Effects 0.000 claims abstract description 8
- 239000007787 solid Substances 0.000 claims abstract description 6
- 230000008961 swelling Effects 0.000 claims abstract description 4
- 239000012528 membrane Substances 0.000 claims description 18
- 238000007598 dipping method Methods 0.000 claims description 13
- 230000035800 maturation Effects 0.000 claims description 6
- 238000005987 sulfurization reaction Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 238000004073 vulcanization Methods 0.000 claims description 4
- 238000002788 crimping Methods 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- BOXSVZNGTQTENJ-UHFFFAOYSA-L zinc dibutyldithiocarbamate Chemical compound [Zn+2].CCCCN(C([S-])=S)CCCC.CCCCN(C([S-])=S)CCCC BOXSVZNGTQTENJ-UHFFFAOYSA-L 0.000 claims description 2
- GOQCSVOOQKFAKT-UHFFFAOYSA-L zinc;n,n-bis(2-methylpropyl)carbamodithioate Chemical compound [Zn+2].CC(C)CN(C([S-])=S)CC(C)C.CC(C)CN(C([S-])=S)CC(C)C GOQCSVOOQKFAKT-UHFFFAOYSA-L 0.000 claims description 2
- 239000002313 adhesive film Substances 0.000 abstract 3
- 238000001035 drying Methods 0.000 abstract 3
- 238000005187 foaming Methods 0.000 abstract 1
- 238000000227 grinding Methods 0.000 abstract 1
- 230000005070 ripening Effects 0.000 abstract 1
- 239000000839 emulsion Substances 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 5
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 230000035807 sensation Effects 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 206010020751 Hypersensitivity Diseases 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 208000030961 allergic reaction Diseases 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000005802 health problem Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003002 pH adjusting agent Substances 0.000 description 1
- 230000032696 parturition Effects 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Landscapes
- Orthopedics, Nursing, And Contraception (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
The invention discloses a method for preparing condom by using a polyisoprene rubber latex. The method comprises the steps of mixing the polyisoprene rubber latex and a proper amount of mixed component at the temperature of 20-26 DEG C to obtain a mixed latex, controlling a total solid content within 48-52% and a pH value of 10.3-10.8 during the mixing process, and standing the latex for ripening; immersing a condom mould with a proper shape in the mixed latex ripened in the step S1, and taking out the immersed condom mould and drying at the temperature of 80-90 DEG C, so as to form an adhesive film on the immersed condom mould; performing treatment of regular rolled hem, drying, swelling, removing the mould, foaming and powdering and dehydrating on the adhesive film formed on the immersed condom mould, and drying and vulcanizing the adhesive film at the temperature of 105-115 DEG C to form the condom. The obtained condom can reach required tensile strength and elongation with no need of mixing the polyisoprene rubber latex at a low temperature and immersing the condom mould.
Description
Technical field
The present invention relates to a kind of preparation method of sheath, relate in particular to a kind of method that adopts polyisoprene latex to prepare sheath.
Background technology
The sheath overwhelming majority of selling on the market at present all is made with natural emulsion, and its main component is cis-Isosorbide-5-Nitrae-polyisoprene.But, can cause a lot of health problems by the sheath of natural emulsion preparation.Contain the materials such as protein in the natural emulsion human body is had allergic reaction.So seek the substitute products of natural emulsion with extremely urgent, various synthetic materials have been used as the substitute of natural emulsion.For example, polyurethane also has been used as the substitute of natural emulsion, be used to the production of sheath, but the hot strength of polyurethane is very high, does not have the resilience of natural emulsion and low tensile set value.Although in development in recent years, improve to some extent, also do not reach the resilience of natural emulsion and low tensile set value.
In the process of using cis-Isosorbide-5-Nitrae-polyisoprene (main component of natural emulsion) preparation sheath, it is found that many problems, particularly sheath, hot strength is not high to also have the condition of presulfurization relatively harsher.
Mention in the various documents, by improving the crosslinking degree of used polyisoprene, improve the hot strength of the product for preparing with polyisoprene.
US6618861 discloses a kind of prescription of polyisoprene latex, comprises five kinds of promoter, and also useful sulphur and zinc oxide are as vulcanizing agent.The hot strength 13.22MPa of the glued membrane of under this prescription, doing, elongation at break 1028%.Such hot strength is inadequate for producing sheath.
US6828387 discloses a kind of method by the polyisoprene latex article of manufacture.Carried out presulfurization 90-150 minute being lower than under 35 ℃ the temperature, the latex of having worked good can store 8 days under 15-20 ℃ of condition.Carry out under the following conditions in the time of article of manufacture: under the temperature of environment temperature or 20-25 ℃, to be immersed in the glove model of coagulating agent coating in the polyisoprene latex of compounding, 70 ℃ of heating one minute, then under 65 ℃ of lower drops 5 minutes, then 70 ℃ of oven dry 5 minutes, under 120 ℃ of conditions, carry out about 20 minutes curing at last.
WO2007/113463 discloses a kind of method that cooperates polyisoprene latex and condition of dipping of preparing.Cooperate and to carry out at low temperatures, for example 24-48 hour, preferably carry out being lower than under 20 ℃ the temperature, more preferably under about 17 ℃ or lower temperature, carry out also preferred about 15 ℃ ± 2 ℃.In all stages until between curing time latex all be maintained under about 15 ℃ ± 2 ℃ temperature.After cure is 120-130 ℃ of lower heating 10 minutes.Mention by this method and produce sheath, its initial tensile strength is 24MPa or larger.
US6618861 mentions in the technique in sum, the hot strength of the sheath for preparing does not reach requirement, in the disclosed method of WO2007/113463, in all stages until between curing time temperature conditions relatively harsh, in present production technology, be difficult to satisfy fully or the production cost that satisfies condition very high.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art and a kind of method that adopts polyisoprene latex to prepare sheath is provided, the method can be implemented suitability for industrialized production easily, and extremely soft, the close skin of the polyisoprene latex sheath feel that adopts the inventive method preparation brings ultimate attainment comfortable sensation to the user.
The object of the present invention is achieved like this:
The invention provides a kind of method that adopts polyisoprene latex to prepare sheath, may further comprise the steps:
S1: under 20-26 ℃ of condition, polyisoprene latex and the suitable composition that is mixed are mixed, obtain the latex that is mixed, the latex that is mixed is parked maturation;
S2: the condom mould of suitable shape is flooded in the latex that is mixed after the slaking in step S1, behind the dipping described condom mould is taken out and under 80-95 ℃ of condition, dry, to form glued membrane at described condom mould;
S3: the glued membrane that forms on the described condom mould of step S2 is carried out after conventional crimping, oven dry, swelling, off-type, bubble wash upper powder, processed, and drier sulfuration under 105-115 ℃ of condition is to form sheath.
Above-mentioned a kind of method that adopts polyisoprene latex to prepare sheath, wherein, in step S1, stirring at low speed (30-60rpm) was mixed in 24 hours under 20-26 ℃ of condition, in the process of being mixed control total solids content in 48-52%, pH value at 10.3-10.8.Control the total solids content of latex of being mixed well, and guarantee that in the process of being mixed the pH value is between 10.3-10.8.Can improve the even property of stream of glued membrane, prevent defective and the uneven thickness of glued membrane.
Above-mentioned a kind of method that adopts polyisoprene latex to prepare sheath, wherein, in step S1, the latex that is mixed was parked maturation 3-7 days.Control well and be mixed storage period of latex, after suitably parking, the hot strength that is prepared into again glued membrane can be significantly improved
Above-mentioned a kind of method that adopts polyisoprene latex to prepare sheath, wherein, in step S2, dipping process carries out under 20-26 ℃ of condition, at least carry out twice dipping, and all under 80-95 ℃, dried 5-10 minute behind each dipping, until the glued membrane on the described condom mould is transparent.Dipping temperature is controlled at 25 ℃ can make glue film performance reach best.
Above-mentioned a kind of method that adopts polyisoprene latex to prepare sheath, wherein, in step S3, the time of described glued membrane dry sulfuration under 105-115 ℃ of condition is 35-45 minute.If the after cure excess Temperature can reduce the physical property of glued membrane.
The inventive method need not be carried out the dipping of being mixed of polyisoprene latex and condom mould at low temperatures, and the sheath for preparing also can reach needed hot strength and percentage elongation.
As understanding this area, the polyisoprene latex of giving birth to must be mixed with the suitable material that is mixed, so that the latex that is mixed that obtains can fully solidify, thereby obtains glued membrane.A kind of extensive use, typically the latex formulations that is mixed is as follows:
| The batching function | Dry state proportioning (weight portion) |
| Polyisoprene latex | 100 |
| PH adjusting agent | 0-0.1 |
| Stabilizing agent | 0-1.5 |
| Vulcanizing agent | 0.5-1.2 |
| Vulcanizing activator | 0.1-0.5 |
| Promoter | 0.1-1.6 |
| Age resistor | 0.1-1.0 |
| Water | (determined by total solids content) in right amount |
In the upper table, the dry state proportioning solid-state proportioning (implication is identical therewith for " the dry state proportioning " of following appearance) after the oven dry that refers to prepare burden.
In the above-mentioned prescription, stabilizing agent can comprise a plurality of individually oriented compounds.Above-mentioned prescription is exemplary providing, and any suitable polyisoprene latex that is mixed can be used in principle.
In prescription, can use any suitable promoter or the combination of promoter.The preferred environment-friendly type vulcanization accelerator that uses, this promoter can obviously be improved hot strength and the percentage elongation of glued membrane, and wherein the environment-friendly type vulcanization accelerator can be selected the combination of zinc diisobutyldithiocarbamate and zinc dibutyl dithiocarbamate.
The inventive method can be produced high-quality sheath, makes it have good physical property, following table be the sheath produced of the inventive method and natural emulsion sheath Performance Ratio:
As can be seen from the above table, the polyisoprene latex sheath that adopts the inventive method preparation at burst pressure, explosion volume, also have aspect the ageing-resistant performance to compare with the natural emulsion sheath good performance arranged, extremely soft, the close skin of this polyisoprene latex sheath feel brings ultimate attainment comfortable sensation to the user simultaneously.
The specific embodiment
Below in conjunction with embodiment, the invention will be further described.
Embodiment 1
Typical prescription is as follows:
Embodiment 2
Specific embodiment according to the prescription of embodiment 1 is as follows:
In the upper table, the percentage number in " batching " hurdle is the concentration of this furnish component aqueous solution, i.e. the mass percent of contained solute in the unit mass solution.
Embodiment 3
A kind of method that adopts polyisoprene latex to prepare sheath may further comprise the steps:
S1: the batching among polyisoprene latex and the embodiment 1 is mixed, stirring at low speed (30-60rpm) is 24 hours under 20-26 ℃ of condition, and in the process of being mixed control total solids content in 49%, pH value 10.5, obtain the latex that is mixed, the latex that is mixed was parked maturation 5 days;
S2: under 20-26 ℃ of condition, carry out the dipping first time in the latex that is mixed of condom mould after parking maturation with suitable shape, after finishing condom mould is taken out and under 80-95 ℃ of condition, dried 5-10 minute, until the glued membrane on the condom mould is transparent, then under 20-26 ℃ of condition, carry out again the dipping second time, under 80-95 ℃ of condition, dried 5-10 minute after finishing, until the glued membrane on the condom mould is transparent;
S3: the glued membrane on the condom mould is carried out after conventional crimping, oven dry, swelling, off-type, bubble wash upper powder, processed, and drier sulfuration 35-45 minute under 105-115 ℃ temperature is to form sheath.
Above embodiment is only for explanation the present invention's, but not limitation of the present invention, person skilled in the relevant technique, in the situation that does not break away from the spirit and scope of the present invention, can also make various conversion or modification, therefore all technical schemes that are equal to also should belong to category of the present invention, should be limited by each claim.
Claims (10)
1. method that adopts polyisoprene latex to prepare sheath may further comprise the steps:
S1: under 20-26 ℃ of condition, polyisoprene latex and the suitable composition that is mixed are mixed, the control total solids content at 10.3-10.8, obtains the latex that is mixed in 48-52%, pH value in the process of being mixed, and the latex that is mixed is parked maturation;
S2: the condom mould of suitable shape is flooded in the latex that is mixed after the slaking in step S1, behind the dipping described condom mould is taken out and under 80-95 ℃ of condition, dry, to form glued membrane at described condom mould;
S3: the glued membrane that forms on the described condom mould of step S2 is carried out after conventional crimping, oven dry, swelling, off-type, bubble wash upper powder, processed, and drier sulfuration under 105-115 ℃ of condition is to form sheath.
2. a kind of method that adopts polyisoprene latex to prepare sheath as claimed in claim 1 is characterized in that, in step S1, stirring at low speed was mixed in 24 hours under 20-26 ℃ of condition.
3. a kind of method that adopts polyisoprene latex to prepare sheath as claimed in claim 2 is characterized in that, the rotating speed of described stirring at low speed is 30-60rpm.
4. a kind of method that adopts polyisoprene latex to prepare sheath as claimed in claim 1 is characterized in that, in step S1, the latex that is mixed was parked maturation 3-7 days.
5. a kind of method that adopts polyisoprene latex to prepare sheath as claimed in claim 1 is characterized in that, in step S2, dipping process carries out under 20-26 ℃ of condition.
6. such as claim 1 or 5 described a kind of methods that adopt polyisoprene latex to prepare sheath, it is characterized in that, in step S2, carry out twice at least dipping.
7. a kind of method that adopts polyisoprene latex to prepare sheath as claimed in claim 6 is characterized in that, in step S2, all dries 5-10 minute under 80-95 ℃ behind each dipping, until the glued membrane on the described condom mould is transparent.
8. a kind of method that adopts polyisoprene latex to prepare sheath as claimed in claim 1 is characterized in that, in step S 3, the time of the dry sulfuration of described glued membrane is 35-45 minute.
9. a kind of method that adopts polyisoprene latex to prepare sheath as claimed in claim 1 is characterized in that, the promoter in the composition that is mixed described in the step S1 is used the environment-friendly type vulcanization accelerator.
10. a kind of method that adopts polyisoprene latex to prepare sheath as claimed in claim 9 is characterized in that, described environment-friendly type vulcanization accelerator is the combination of zinc diisobutyldithiocarbamate and zinc dibutyl dithiocarbamate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210384529.9A CN102975321B (en) | 2012-10-11 | 2012-10-11 | Method for preparing condom by using polyisoprene rubber latex |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210384529.9A CN102975321B (en) | 2012-10-11 | 2012-10-11 | Method for preparing condom by using polyisoprene rubber latex |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102975321A true CN102975321A (en) | 2013-03-20 |
| CN102975321B CN102975321B (en) | 2015-03-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210384529.9A Active CN102975321B (en) | 2012-10-11 | 2012-10-11 | Method for preparing condom by using polyisoprene rubber latex |
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| Country | Link |
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| CN (1) | CN102975321B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103610531A (en) * | 2013-12-06 | 2014-03-05 | 陈汝霖 | Condom with open end capable of being tightened and adjusted and manufacturing process thereof |
| CN104840295A (en) * | 2015-05-22 | 2015-08-19 | 上海强睿博化工有限公司 | Novel polyurethane condom and method for manufacturing same |
| CN105358618A (en) * | 2013-07-10 | 2016-02-24 | Ttk防护设备有限公司 | A binary process for manufacture of dipped latex products |
| CN105997332A (en) * | 2016-08-05 | 2016-10-12 | 桂林恒保健康用品有限公司 | Condom and manufacturing method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101238172A (en) * | 2005-08-05 | 2008-08-06 | 克莱顿聚合物研究有限公司 | Latex accelerator composition |
| CN102164516A (en) * | 2008-05-01 | 2011-08-24 | 安塞尔保健产品有限责任公司 | Dip-formed synthetic polyisoprene latex articles with improved intraparticle and interparticle crosslinks |
-
2012
- 2012-10-11 CN CN201210384529.9A patent/CN102975321B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101238172A (en) * | 2005-08-05 | 2008-08-06 | 克莱顿聚合物研究有限公司 | Latex accelerator composition |
| CN102164516A (en) * | 2008-05-01 | 2011-08-24 | 安塞尔保健产品有限责任公司 | Dip-formed synthetic polyisoprene latex articles with improved intraparticle and interparticle crosslinks |
Non-Patent Citations (1)
| Title |
|---|
| 魏邦柱: "《胶乳 乳液应用技术》", 31 July 2003, 化学工业出版社 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105358618A (en) * | 2013-07-10 | 2016-02-24 | Ttk防护设备有限公司 | A binary process for manufacture of dipped latex products |
| CN105358618B (en) * | 2013-07-10 | 2017-04-26 | Ttk防护设备有限公司 | A binary process for manufacture of dipped latex products |
| CN103610531A (en) * | 2013-12-06 | 2014-03-05 | 陈汝霖 | Condom with open end capable of being tightened and adjusted and manufacturing process thereof |
| CN104840295A (en) * | 2015-05-22 | 2015-08-19 | 上海强睿博化工有限公司 | Novel polyurethane condom and method for manufacturing same |
| CN105997332A (en) * | 2016-08-05 | 2016-10-12 | 桂林恒保健康用品有限公司 | Condom and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102975321B (en) | 2015-03-25 |
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Address after: 201700 building 6, 1218 Xinda Road, Qingpu District, Shanghai Patentee after: Shanghai Celebrity sanitary products Co.,Ltd. Address before: 201700 building 6, 1218 Xinda Road, Qingpu District, Shanghai Patentee before: SHANGHAI MINGBANG RUBBER PRODUCTS Co.,Ltd. |
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