CN117562732A - Polyurethane condom and preparation method thereof - Google Patents
Polyurethane condom and preparation method thereof Download PDFInfo
- Publication number
- CN117562732A CN117562732A CN202311747204.7A CN202311747204A CN117562732A CN 117562732 A CN117562732 A CN 117562732A CN 202311747204 A CN202311747204 A CN 202311747204A CN 117562732 A CN117562732 A CN 117562732A
- Authority
- CN
- China
- Prior art keywords
- condom
- finished
- polyurethane
- semi
- die
- 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.)
- Pending
Links
- 229920002635 polyurethane Polymers 0.000 title claims abstract description 36
- 239000004814 polyurethane Substances 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title claims description 7
- 210000000582 semen Anatomy 0.000 claims abstract description 8
- 238000003860 storage Methods 0.000 claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 21
- 238000011010 flushing procedure Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 claims description 5
- 238000007605 air drying Methods 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000004806 packaging method and process Methods 0.000 claims description 3
- 238000004073 vulcanization Methods 0.000 claims description 3
- 230000001680 brushing effect Effects 0.000 claims description 2
- 210000004392 genitalia Anatomy 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 7
- 230000035945 sensitivity Effects 0.000 abstract description 7
- 230000000638 stimulation Effects 0.000 abstract description 4
- 229920003225 polyurethane elastomer Polymers 0.000 abstract description 2
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 239000004816 latex Substances 0.000 description 4
- 229920000126 latex Polymers 0.000 description 4
- 241001391944 Commicarpus scandens Species 0.000 description 2
- 230000002254 contraceptive effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002028 premature Effects 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 102000002322 Egg Proteins Human genes 0.000 description 1
- 108010000912 Egg Proteins Proteins 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000029142 excretion Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 210000004681 ovum Anatomy 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 208000015891 sexual disease Diseases 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F6/00—Contraceptive devices; Pessaries; Applicators therefor
- A61F6/02—Contraceptive devices; Pessaries; Applicators therefor for use by males
- A61F6/04—Condoms, sheaths or the like, e.g. combined with devices protecting against contagion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
- B29C41/14—Dipping a core
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/34—Component parts, details or accessories; Auxiliary operations
- B29C41/42—Removing articles from moulds, cores or other substrates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/34—Rim rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/753—Medical equipment; Accessories therefor
- B29L2031/7538—Condoms
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Biomedical Technology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Reproductive Health (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
Abstract
The invention discloses a polyurethane condom, which comprises a condom body, wherein the thickness of the front end wall surface of the condom body is larger than that of the middle part and the rear part of the condom body, and a binding ring is arranged at the curled edge of the rear end of the condom body; the condom comprises a condom body, wherein a front end wall surface of the condom body is provided with a semen storage cavity extending forwards, and a radially extending bulge loop is formed on the inner side wall of the front part of the condom body. The novel condom is made of polyurethane rubber, has high strength, can meet ultrathin manufacture, has the front end wall surface thickness of the front end larger than the thickness of the middle part and the rear part of the condom body, reduces the stimulation of the front glans part of male genitals, reduces the sensitivity of the male genitals, and improves the use effect.
Description
Technical field:
the invention relates to the technical field of condoms, in particular to a polyurethane condom and a preparation method thereof.
The background technology is as follows:
the existing condom is made of soft, thin and transparent latex, and adopts a physical isolation mode to prevent sperm from advancing and combining with ovum, thus preventing conception.
Condoms are barrier-type devices that can be used during intercourse, which play a vital role in contraception and prevention of transmission of sexual disease.
Existing condoms generally have either a conventional smooth-looking sheath or a sheath having a granular-like appearance.
The existing condom is generally made of latex, however, the strength is limited, if the condom is too thin, the compactness of the condom is affected, the condom is easy to break or leak, the contraceptive effect is affected, the existing user has higher and higher requirements on the thinness of the condom, no sense of use is advocated, at the moment, the manufacturing difficulty of the latex condom is greatly improved, the ultrathin requirement cannot be met, other materials can only be used for replacing latex for manufacturing, and moreover, the sensitivity of the ultrathin condom to the user is also improved due to the fact that the ultrathin condom is too thin, so that the user with the too high sensitivity is not suitable for use, and the condom is easy to leak out prematurely.
The invention comprises the following steps:
the invention aims to overcome the defects of the prior art and provide a polyurethane condom and a preparation method thereof, wherein the polyurethane condom is made of polyurethane sizing material, has high strength, can meet ultrathin manufacture, has the front end wall surface thickness of the front end larger than the thickness of the middle part and the rear part of a condom body, reduces the stimulation of the front glans part of male genitals, reduces the sensitivity thereof and improves the use effect.
The scheme for solving the technical problems is as follows:
a polyurethane condom comprises a condom body, wherein the thickness of the front end wall surface of the condom body is larger than that of the middle part and the rear part of the condom body, and a tightening ring is arranged at the curled edge of the rear end of the condom body;
the condom comprises a condom body, wherein a front end wall surface of the condom body is provided with a semen storage cavity extending forwards, and a radially extending bulge loop is formed on the inner side wall of the front part of the condom body.
The condom body is a polyurethane condom.
A method for preparing a polyurethane condom, comprising the following steps:
(1) Moving the condom die into a material pool filled with polyurethane material, enabling the polyurethane material to be attached to the condom die, and removing the condom die from the material pool;
(2) Air-drying the polyurethane material on the condom mould to obtain a semi-finished condom;
(3) Repeating the steps (1) and (2) to enable the polyurethane material on the condom die to reach the set thickness;
(4) Delivering the semi-finished condom into a heating furnace for heating and vulcanizing treatment;
(5) Rolling brush is carried out on the root part of the semi-finished condom sleeved on the condom die to form a tight collar;
(6) Flushing the semi-finished condom from the condom die by flushing the root of the semi-finished condom under high pressure;
(7) Cleaning and drying the semi-finished condom;
(8) Oiling the semi-finished condom to obtain a finished condom;
(9) Packaging the finished condom.
The invention has the outstanding effects that:
1. the polyurethane adhesive is prepared from polyurethane adhesive, has high strength and can meet the requirement of ultrathin manufacture.
2. The thickness of the front end wall surface of the front end of the condom is larger than that of the middle part and the rear part of the condom body, so that the stimulation of the front glans part of the male genitals is reduced, the sensitivity is reduced, and the use effect is improved.
3. The convex ring can clamp the outer side wall of the front part of the male genitals to a certain extent, and can reduce the probability of premature release.
4. In the processing process, the strength of the polyurethane adhesive is improved by adopting multiple adhesion of polyurethane adhesive.
Description of the drawings:
FIG. 1 is a schematic view of a partial structure of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
fig. 3 is a schematic view of a partial structure of a condom die of the invention.
The specific embodiment is as follows:
an embodiment, see fig. 1 to 3, shows a polyurethane condom, including a condom body 10, the front end wall thickness of the condom body 10 is greater than the thickness of the middle part and the rear part of the condom body 10, and with this structure, the stimulation of the front glans part of male genitals is reduced, the sensitivity is reduced, and the use effect is improved.
Further, a tightening ring 11 is arranged at the curled edge of the rear end of the condom body 10; the tightening ring 11 can prevent the condom body 10 from being separated when in use, and the problems of sliding sleeve and the like occur, thereby ensuring the contraceptive effect.
Further, the front end wall surface of the condom body 10 is formed with a semen storage cavity 12 extending forwards, the semen storage cavity 12 can store the emitted semen, and the inner side wall of the front part of the condom body 10 is formed with a radially extending bulge loop 13. The protruding ring 13 can clamp the outer side wall of the front part of the male genitals to a certain extent, and the probability of premature release of the male genitals can be reduced.
Further, the wall surface of the semen storage chamber 12 has the same thickness as the front wall surface of the condom body 10.
Further, the condom body 10 is a polyurethane condom. The polyurethane has high strength, is not easy to break and has good heat transfer property.
When the condom is used, the front end wall surface thickness of the condom body 10 is larger than the thickness of the middle part and the rear part of the condom body 10, namely the front end of the condom body is thickened, so that the thickness of the contact part between the condom body and the front glans part of the male genitals is increased, and when the condom is used, the sensitivity of the front glans part of the male genitals is reduced, so that the condom body is not easy to leak out too early, and the time delay effect is achieved.
The bulge loop 13 can be used for clamping the outer side wall of the front part of the male genitals to improve the compression degree of the outer surface of the front part of the male genitals, and the structure can also be used for inhibiting the excretion of the male genitals to a certain extent and also has a delay effect.
A preparation method of a polyurethane condom, which comprises the following steps: the method comprises the following steps:
(1) Moving the condom die into a material pool filled with polyurethane material, enabling the polyurethane material to be attached to the condom die, and removing the condom die from the material pool;
the condom mould is shown in figure 3, the upper end of the condom mould is clamped and fixed on the upper fixed connecting head of the re-conveying chain, and the condom mould is a glass product generally, has good heat conductivity and can ensure that the attached polyurethane sizing material can be uniformly heated to form a film.
(2) Air-drying the polyurethane material on the condom mould to obtain a semi-finished condom;
the air drying mode adopted by the condom mould is that the condom mould and the semi-finished condom attached on the mould are cooled by external air blowing in the conveying process of the conveying chain;
(3) Repeating the steps 1 and 2 to enable the polyurethane material on the condom die to reach the set thickness; typically 2 to 3 times.
(4) Delivering the semi-finished condom into a heating furnace for heating and vulcanizing treatment; the conveying chain conveys the condom mould attached with the semi-finished condom into the long furnace for heating, so as to realize vulcanization, and the main function is to increase the strength and the elasticity of the condom mould.
(5) Rolling brushing the root of the semi-finished condom sleeved on the condom die to form a tight collar 11; the condom mould rotates along with the transverse conveying process of the conveying chain, and at the moment, a transverse roller vertical to the condom mould rotates along the root of the semi-finished condom, so that the root of the semi-finished condom is wound to form a tight ring 11.
(6) Flushing the semi-finished condom from the condom die by flushing the root of the semi-finished condom under high pressure; the condom mould reaches a water flushing area along with the transverse conveying process of the conveying chain, and the condom mould is flushed to the root of the semi-finished condom by high-pressure water to be separated from the condom mould;
(7) Cleaning and drying the semi-finished condom; soaking, cleaning, drying and the like are carried out on the separated semi-finished condom. After drying, detection, such as pinhole testing, is also required.
(8) Oiling the semi-finished condom to obtain a finished condom;
(9) Packaging the finished condom. It can be automatically packaged or ensured manually.
The vulcanization temperature in step 4 is 75 ℃ to 82 ℃.
The rotating direction of the semi-finished condom sleeved on the condom die is vertical to the transmission direction of the rolling brush.
Wherein, the condom die is shown in figure 3, and an annular groove is formed at the outer side wall of the front part so as to meet the requirement that the raised ring 13 can be formed after the polyurethane rubber is adhered.
The foregoing is only a preferred embodiment of the invention. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present invention.
Claims (6)
1. A polyurethane condom comprising a condom body (10), characterized in that: the thickness of the front end wall surface of the condom body (10) is larger than that of the middle part and the rear part of the condom body (10), and a tightening ring (11) is arranged at the curled edge of the rear end of the condom body (10);
the front end wall surface of the condom body (10) is provided with a semen storage cavity (12) extending forwards, and the inner side wall of the front part of the condom body (10) is provided with a bulge loop (13) extending radially.
2. A polyurethane condom as claimed in claim 1, wherein: the thickness of the wall surface of the semen storage cavity (12) is the same as that of the front end wall surface of the condom body (10).
3. A polyurethane condom as claimed in claim 1, wherein: the condom body (10) is a polyurethane condom.
4. A method of making a polyurethane condom according to claims 1 to 3, characterized in that: the method comprises the following steps:
(1) Moving the condom die into a material pool filled with polyurethane material, enabling the polyurethane material to be attached to the condom die, and removing the condom die from the material pool;
(2) Air-drying the polyurethane material on the condom mould to obtain a semi-finished condom;
(3) Repeating the steps (1) and (2) to enable the polyurethane material on the condom die to reach the set thickness;
(4) Delivering the semi-finished condom into a heating furnace for heating and vulcanizing treatment;
(5) Rolling brushing the root of the semi-finished condom sleeved on the condom die to form a tight collar (11);
(6) Flushing the semi-finished condom from the condom die by flushing the root of the semi-finished condom under high pressure;
(7) Cleaning and drying the semi-finished condom;
(8) Oiling the semi-finished condom to obtain a finished condom;
(9) Packaging the finished condom.
5. The preparation method according to claim 4, wherein: the vulcanization temperature in step (4) is 75 ℃ to 82 ℃.
6. The preparation method according to claim 4, wherein: the rotating direction of the semi-finished condom sleeved on the condom die is vertical to the transmission direction of the rolling brush.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311747204.7A CN117562732A (en) | 2023-12-19 | 2023-12-19 | Polyurethane condom and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311747204.7A CN117562732A (en) | 2023-12-19 | 2023-12-19 | Polyurethane condom and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117562732A true CN117562732A (en) | 2024-02-20 |
Family
ID=89891822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311747204.7A Pending CN117562732A (en) | 2023-12-19 | 2023-12-19 | Polyurethane condom and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117562732A (en) |
-
2023
- 2023-12-19 CN CN202311747204.7A patent/CN117562732A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication |