CN102107473A - Die for producing water-base polyurethane condom - Google Patents
Die for producing water-base polyurethane condom Download PDFInfo
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- CN102107473A CN102107473A CN2010105818757A CN201010581875A CN102107473A CN 102107473 A CN102107473 A CN 102107473A CN 2010105818757 A CN2010105818757 A CN 2010105818757A CN 201010581875 A CN201010581875 A CN 201010581875A CN 102107473 A CN102107473 A CN 102107473A
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Abstract
The invention relates to a die for producing a water-base polyurethane condom. The die is made of a polytetrafluoroethylene material, namely the die can be made of a pure polytetrafluoroethylene material and also can be made of the polytetrafluoroethylene material added with glass fibers or the polytetrafluoroethylene material added with iron powder. The die can bear the change of high and low temperature repeatedly, realize a membrane-carrying drying process in a straight dipping method of the condom and reduce adhesion degree between the die and a glue membrane, and has the advantages that the glue membrane is easy to crimp and is non-stick.
Description
Technical field
The present invention relates to a kind of latex product production mould, particularly a kind of polyurethane impregnated production of articles mould is specifically related to aqueous polyurethane condom manufacture mould.
Background technology
Sheath is one of most widely used contraceptive device in the world at present.AIDS work situation is increasingly serious along with preventing and treating, and the quality of condom products also more and more comes into one's own.In the prior art, the main raw material(s) of making sheath is a Heveatex, and contain many nonrubber compositions such as anaphylaxis water soluble protein in the Heveatex, if water soluble protein surpasses certain content in the latex, user's skin will produce allergic reactions such as erythema, itch, and serious sense of discomfort is arranged.On the other hand, the dry of Heveatex is 5000 to 70000 nanometers, and the volume of various viruses is far smaller than above-mentioned size, a large amount of statistics and result of study confirm, the tradition natural latex condom is when effectively practising contraception, though can produce certain iris action to virus, its mortality is unfavorable for the control of disease up to 15%.Must will pass through vulcanizing treatment when with the Heveatex being raw material production sheath simultaneously, sheath can produce nitrosamine in this process, and this material has strong carcinogenicity.It is subjected to the influence of various oil lubricants, and when using sheath, procarcinogen contacts with people's pseudo body fluid, and the nitrosamine of generation has the risk of final cause cancer with the DNA alkylation.Therefore, seeking a kind of more suitably raw material and produce sheath, to realize part or all of replaced latex condom products, is the inexorable trend of condom manufacture development.
The later stage nineties 20th century, those skilled in the art once attempted polyurethane as the material of producing sheath, result of study shows: compare with latex prophylactic, nontoxic, characteristics such as intensity is high, thermal conductivity good, mantle good toughness, no special odor, no allergic reaction that polyurethane condom has, to heat, wet and ultraviolet light is insensitive, ageing-resistant performance is good, is not subjected to the influence of various oil lubricants in storage process, can not reduce the physical property of goods itself significantly.The barrier of polyurethane condom is renderd a service high, no matter be under static state or dynamic pressure condition, gas, dyestuff or HIV virus all can not see through rete, so can practise contraception effectively and filter AIDS virus, is a kind of safe in utilization, comfortable sheath.
Polyurethane material is divided into aqueous polyurethane and solvent borne polyurethane, and the aqueous polyurethane raw material mainly are used in coating water paint aspect at present, aqueous polyurethane is compared environmental protection more with solvent borne polyurethane, more can adapt to existing condom manufacture equipment, be one of optimal raw material that replaces Heveatex.But because the composition of polyurethane material and Heveatex is widely different, natural latex condom production method and mould can't be adapted to the production of aqueous polyurethane sheath in the prior art, and main cause is choosing of mold material.Sheath is as resilient film article, the general explained hereafter that adopts straight dipping process, require the attached type of its product effective, can on model, form uniform film, need adopt band film drying process in process of production, it is the difference variation that mould will bear normal temperature to 150 degree scope repeatedly, thereby it is very high to the requirement of mould, and adopt natural latex condom to produce in the prior art usually with mould, natural latex condom is generally glass with mold material, pottery, stainless steel etc., and the aqueous polyurethane raw material be a kind of can with the material of above-mentioned material strong bond, be commonly used for and produce and glass, pottery, the coating water paint of the mutual strong bond of material such as stainless steel etc., so as the aqueous polyurethane sheath time, this aqueous polyurethane sheath can be bonding with mould, the problem of difficult crimping and demoulding difficulty occurs.Those skilled in the art once attempted adopting and added weak coagulating agent, attached type agent, dipping swelling agent in process of production, or did methods such as resinous coat at die surfaces such as glass, pottery, stainless steels, did not reach desirable stripping result yet.
In sum, choosing of mold material is the technical problem underlying that can aqueous polyurethane be successfully applied to the sheath suitability for industrialized production.
Summary of the invention
The object of the present invention is to provide a kind of aqueous polyurethane condom manufacture mould, it has the variation that can bear high low temperature repeatedly, can realize sheath straight dipping process band film drying process, has reduced the degree of adhesion between mould and glued membrane, easily advantages such as crimping, demoulding.
Technical program of the present invention lies in:
A kind of aqueous polyurethane condom manufacture mould, it is characterized in that: it is made by polytetrafluoroethylmaterial material.
As a further improvement on the present invention, it is made by the polytetrafluoroethylmaterial material that has added filler.
As a further improvement on the present invention, described filler is a glass fibre, and the percentage by weight of described glass fibre is 5-15%.
As a further improvement on the present invention, described filler is an iron powder, and the percentage by weight of described iron powder is 1-10%.
As a further improvement on the present invention, described aqueous polyurethane condom manufacture mould is condom production mould.
As a further improvement on the present invention, described condom production mould is hollow condom production mould.
As a further improvement on the present invention, described aqueous polyurethane condom manufacture mould is female condom production mould.
As a further improvement on the present invention, described female condom production mould is hollow female condom production mould.
Beneficial effect of the present invention is:
Polytetrafluoroethylene (PTFE) is a kind of artificial synthesized polymer material that has used fluorine to replace all hydrogen atoms in the polyethylene, is generally known as " non-sticking lining " or " easy clean pot material ", and polytetrafluoroethylene (PTFE) has following characteristics:
1, high temperature resistant---use operating temperature to reach 250 ℃.
2, low temperature resistant---have favorable mechanical toughness; Even temperature drops to-196 ℃, also can keep 5% percentage elongation.
3, corrosion-resistant---to most of chemicals and solvent, show inertia, energy strong alkali-acid resistance, water and various organic solvent.
4, weatherability---aging life-span best in the plastics is arranged.
5, high lubricated---be coefficient of friction the lowest in the solid material.
6, do not adhere to---be surface tension minimum in the solid material, do not adhere to any material.
7, nonhazardous---have the physiology inertia, implanting for a long time as artificial blood vessel and internal organs has no adverse reaction.
Because polytetrafluoroethylene (PTFE) has above outstanding excellent comprehensive performance, polytetrafluoroethylene (PTFE) is usually as high-low temperature resistant in the prior art, resistant material, insulating materials, anti-stick coating etc., and the present invention overcomes the technology prejudice that polytetrafluoroethylene (PTFE) in the prior art only limits to such use, adopt polytetrafluoroethylene (PTFE) as making the material of process water based polyurethane condom manufacture with mould, can satisfy the straight soaking technology and the requirement of band film drying process of aqueous polyurethane condom manufacture fully with mould by its condom manufacture that is processed into, reduce the degree of adhesion between mould and glued membrane, thereby solved aqueous polyurethane sheath glued membrane crimping, the problem of demoulding difficulty.Further add filler in polytetrafluoroethylene (PTFE), abrasion resistance, creep-resistant property, thermal conductivity factor and the modulus of elasticity in static bending of mould are all increased substantially, compression strength, modulus of compressibility, bending strength and hardness also significantly improve.Be made into hollow mould, can alleviate the weight of mould, save material, adapt to the instructions for use of condom production equipment and frock.
Description of drawings
Fig. 1 is the embodiment of the invention 1 a female condom production die cut view
Fig. 2 is the embodiment of the invention 1 a female condom production mould right view
Fig. 3 is the embodiment of the invention 1 a female condom production mould left view
Fig. 4 is the condom production die cut view of the embodiment of the invention 2
Fig. 5 is the condom production mould right view of the embodiment of the invention 2
Fig. 6 is the condom production mould left view of the embodiment of the invention 2
Fig. 7 is the condom production die cut view of the embodiment of the invention 3
Fig. 8 is the embodiment of the invention 4 female condom production mould structure schematic diagrames
Fig. 9 is the embodiment of the invention 5 condom production mould structure schematic diagrames
Among the figure: the production of 1-female condom with stainless steel tube, 2-pure polytetrafluoroethylene floor, the production of 3-condom with the polytetrafluoroethylene floor of mould stainless steel tube, 4-filled glass fiber, the polytetrafluoroethylene floor, 6 of 5-filling ferrous powder-solid bell-mouthed female condom production mould, the 7-solid condom production mould be with.
The specific embodiment
Embodiment 1:
A kind of aqueous polyurethane condom manufacture mould, as Figure 1-3, it is to wrap up pure polytetrafluoroethylene floor 2 in female condom production with the outer wall of stainless steel tube 1, making the body diameter is 50 millimeters, the horn mouth diameter is 70 millimeters, hollow, be with bell-mouthed female condom production mould, female condom production places outside the pure polytetrafluoroethylene floor 2 with an end of stainless steel tube 1, adopting this mould to produce the body diameter is 50 millimeters, the horn mouth diameter is the bell-mouthed female condom of 70 millimeters be with, adopt straight dipping process band film drying process, this mould has born the high low temperature of 0 to 150 degree repeatedly in band film dry run variation, good stability, it is easy that sheath adds the man-hour crimping, not sticking to mould.
Embodiment 2:
A kind of aqueous polyurethane condom manufacture mould, shown in Fig. 4-6, it is a polytetrafluoroethylene floor 4 of using full parcel filled glass fiber on stainless steel tube 3 outer walls in condom production, make diameter and be 35 millimeters, hollow, condom production mould, the glass fibre percentage by weight is 5% in the polytetrafluoroethylmaterial material layer 4 of filled glass fiber, adopting this mould to produce diameter is 35 millimeters aqueous polyurethane condom, adopt straight dipping process band film drying process, this mould has born the high low temperature of 0 to 150 degree repeatedly in band film dry run variation, it is easy that the aqueous polyurethane sheath adds the man-hour crimping, sticking to mould not, the bending strength and the hardness performance of mould significantly improve.
Embodiment 3:
A kind of aqueous polyurethane condom manufacture mould, as shown in Figure 7, it is a polytetrafluoroethylene floor 5 of using full parcel filling ferrous powder on stainless steel tube 3 outer walls in condom production, make diameter and be 33 millimeters, hollow, condom production mould, the percentage by weight of iron powder is 2% in the polytetrafluoroethylmaterial material layer 5 of filling ferrous powder, adopting this mould to produce diameter is 33 millimeters aqueous polyurethane condom, adopt straight dipping process band film drying process, this mould has born the high low temperature of 0 to 150 degree repeatedly in band film dry run variation, it is easy that the aqueous polyurethane sheath adds the man-hour crimping, sticking to mould not, by in polytetrafluoroethylmaterial material, adding iron powder, the bending strength of mould and hardness performance are significantly improved.
Embodiment 4:
A kind of aqueous polyurethane condom manufacture mould, as shown in Figure 8, it is that to make the body diameter be that 50 millimeters, horn mouth diameter are 70 millimeters, solidly are with bell-mouthed female condom production with mould 6 to pure polytetrafluoroethylene (PTFE) material, adopting this mould to produce body diameter is that 50 millimeters, horn mouth diameter are the bell-mouthed female condom of 70 millimeters be with, adopt straight dipping process band film drying process, this mould has born the high low temperature of 0 to 150 degree repeatedly in band film dry run variation, it is easy that sheath adds the man-hour crimping, not sticking to mould.
Embodiment 5:
A kind of aqueous polyurethane condom manufacture mould, as shown in Figure 9, it makes diameter by pure polytetrafluoroethylene (PTFE) material is 35 millimeters, solid condom production mould 7, adopting this mould to produce diameter is 35 millimeters aqueous polyurethane condom, adopt straight dipping process band film drying process, this mould has born the variation of the high low temperature of 10 to 150 degree repeatedly in band film dry run, it is easy that the aqueous polyurethane sheath adds the man-hour crimping, not sticking to mould.
Claims (8)
1. aqueous polyurethane condom manufacture mould, it is characterized in that: it is made by polytetrafluoroethylmaterial material.
2. aqueous polyurethane condom manufacture mould, it is characterized in that: it is made by the polytetrafluoroethylmaterial material that has added filler.
3. aqueous polyurethane condom manufacture mould according to claim 2, it is characterized in that: described filler is a glass fibre, the percentage by weight of described glass fibre is 5-15%.
4. aqueous polyurethane condom manufacture mould according to claim 2 is characterized in that: described filler is an iron powder, and the percentage by weight of described iron powder is 1-10%.
5. according to claim 3 or 4 described aqueous polyurethane condom manufacture moulds, it is characterized in that: described aqueous polyurethane condom manufacture mould is condom production mould.
6. aqueous polyurethane condom manufacture mould according to claim 5 is characterized in that: described condom production mould is hollow condom production mould.
7. aqueous polyurethane condom manufacture mould according to claim 4 is characterized in that: described aqueous polyurethane condom manufacture mould is female condom production mould.
8. aqueous polyurethane condom manufacture mould according to claim 7 is characterized in that: described female condom production mould is hollow female condom production mould.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105818757A CN102107473A (en) | 2010-12-10 | 2010-12-10 | Die for producing water-base polyurethane condom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105818757A CN102107473A (en) | 2010-12-10 | 2010-12-10 | Die for producing water-base polyurethane condom |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102107473A true CN102107473A (en) | 2011-06-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105818757A Pending CN102107473A (en) | 2010-12-10 | 2010-12-10 | Die for producing water-base polyurethane condom |
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| CN (1) | CN102107473A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104339485A (en) * | 2014-10-23 | 2015-02-11 | 中国化工株洲橡胶研究设计院有限公司 | Production method of polyurethane latex condom and special mold thereof |
| CN106280396A (en) * | 2016-08-30 | 2017-01-04 | 上海强睿博高分子科技有限公司 | Condom for women and preparation method thereof |
| WO2021196413A1 (en) * | 2020-03-31 | 2021-10-07 | 兰州科时西西里健康科技有限公司 | Mold for molding polyurethane condom, and preparation method and use method for mold |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3553308A (en) * | 1967-08-07 | 1971-01-05 | Takeda Chemical Industries Ltd | Method for preparing polyurethane molded articles |
| US5001009A (en) * | 1987-09-02 | 1991-03-19 | Sterilization Technical Services, Inc. | Lubricious hydrophilic composite coated on substrates |
| CN1136054A (en) * | 1995-05-13 | 1996-11-20 | 徐景铎 | Polyurethane latax and its production and condom therefrom |
| CN1285364A (en) * | 2000-09-25 | 2001-02-28 | 四川省和光高技术开发有限责任公司 | Process for preparation of high strength polyurethane aqueous dispersion |
| CN1431407A (en) * | 2003-02-24 | 2003-07-23 | 济南大学 | Nano composite material sliding bearing with fluoroplastics base |
-
2010
- 2010-12-10 CN CN2010105818757A patent/CN102107473A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3553308A (en) * | 1967-08-07 | 1971-01-05 | Takeda Chemical Industries Ltd | Method for preparing polyurethane molded articles |
| US5001009A (en) * | 1987-09-02 | 1991-03-19 | Sterilization Technical Services, Inc. | Lubricious hydrophilic composite coated on substrates |
| CN1136054A (en) * | 1995-05-13 | 1996-11-20 | 徐景铎 | Polyurethane latax and its production and condom therefrom |
| CN1285364A (en) * | 2000-09-25 | 2001-02-28 | 四川省和光高技术开发有限责任公司 | Process for preparation of high strength polyurethane aqueous dispersion |
| CN1431407A (en) * | 2003-02-24 | 2003-07-23 | 济南大学 | Nano composite material sliding bearing with fluoroplastics base |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104339485A (en) * | 2014-10-23 | 2015-02-11 | 中国化工株洲橡胶研究设计院有限公司 | Production method of polyurethane latex condom and special mold thereof |
| CN106280396A (en) * | 2016-08-30 | 2017-01-04 | 上海强睿博高分子科技有限公司 | Condom for women and preparation method thereof |
| CN106280396B (en) * | 2016-08-30 | 2018-08-31 | 浙江强睿博高分子科技有限公司 | Sheath for women and preparation method thereof |
| WO2021196413A1 (en) * | 2020-03-31 | 2021-10-07 | 兰州科时西西里健康科技有限公司 | Mold for molding polyurethane condom, and preparation method and use method for mold |
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Application publication date: 20110629 |