CN113289780A - Silica gel nozzle structure for tooth flushing device and manufacturing method thereof - Google Patents
Silica gel nozzle structure for tooth flushing device and manufacturing method thereof Download PDFInfo
- Publication number
- CN113289780A CN113289780A CN202110511721.9A CN202110511721A CN113289780A CN 113289780 A CN113289780 A CN 113289780A CN 202110511721 A CN202110511721 A CN 202110511721A CN 113289780 A CN113289780 A CN 113289780A
- Authority
- CN
- China
- Prior art keywords
- nozzle
- silica gel
- benzophenone
- manufacturing
- parts
- 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
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
- A61C17/02—Rinsing or air-blowing devices, e.g. using fluid jets or comprising liquid medication
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Dentistry (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Dental Preparations (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
The invention discloses a silica gel nozzle structure for a tooth flushing device, which comprises a nozzle arranged in a conical shape, wherein the bottom of the nozzle is fixedly provided with a sleeve which is communicated with the nozzle and is integrally formed. A method for manufacturing a silica gel nozzle for a tooth rinsing device comprises the following steps: s1, preparing raw materials according to the weight ratio; s2, blending by a double-roller open mill; s3, carrying out vulcanization processing; s4, preparing an acetone solution of benzophenone; s5, putting the mixture into acetone solution of benzophenone; s6, sealing in a water bath kettle; s7, using an ultraviolet light curing device to perform light polymerization; s8, obtaining food-grade silica gel; s9, molding by using a silica gel nozzle mold of the tooth flushing device, and the invention relates to the technical field of silica gel products. The invention solves the problems that the nozzles of the tooth flusher are all of plastic integrated structures, can not be replaced, have unstable material performance, can generate harmful substances in acid and oil environments, and can cause damage to human bodies in the using process.
Description
Technical Field
The invention relates to the technical field of silica gel products, in particular to a silica gel nozzle structure for a tooth flushing device and a manufacturing method thereof.
Background
In the prior art, the nozzle of the tooth flushing device is of a plastic integrally-formed structure, cannot be replaced, is unstable in material performance, can generate harmful substances in acidic and oily environments, and can damage a human body in the using process.
Disclosure of Invention
The invention aims to solve the problems that nozzles of tooth rinsers are all of plastic integrally-molded structures, cannot be replaced, are unstable in material performance, can generate harmful substances in acidic and oily environments, and can cause damage to human bodies in the using process.
In order to achieve the purpose, the invention adopts the following technical scheme: a silica gel nozzle structure for a tooth flushing device comprises a nozzle which is arranged in a conical shape, wherein the bottom of the nozzle is fixedly provided with a sleeve which is communicated with the nozzle and is integrally formed.
A method for manufacturing a silica gel nozzle for a tooth rinsing device comprises the following steps:
s1, preparing the raw materials according to the weight ratio: methyl vinyl silicone rubber, tetrahydroxypyran, platinum-chromium compounds, acetone, hydrogen-containing silicone oil, N-vinyl pyrrolidone, sodium hyaluronate, hydroxyethyl methacrylate, methacrylic anhydride, 3- (2-methacryloyloxyethyl dimethylamino) propane sulfonate, benzoin dimethyl ether and benzophenone;
s2, sequentially putting methyl vinyl silicone rubber, hydrogen-containing silicone oil and platinum-chromium compound into a double-roll open mill for blending;
s3, putting the blend into a flat vulcanizing machine for vulcanization processing;
s4, preparing an acetone solution of benzophenone;
s5, cleaning and drying the mixture, and putting the mixture into acetone solution of benzophenone;
s6, sealing the mixture in a water bath kettle, taking out the mixture, and naturally drying the mixture;
s7, preparing a 3- (2-methacryloyloxyethyl dimethylamino) propane sulfonate aqueous solution, then putting the dried raw materials into the 3- (2-methacryloyloxyethyl dimethylamino) propane sulfonate aqueous solution, and using an ultraviolet curing device to irradiate for polymerization;
s8, washing the polymerized raw materials to obtain food-grade silica gel;
and S9, molding by using a silicon rubber nozzle mold of the tooth flushing device.
Preferably, in the S1, the raw materials are in parts by weight: 20-30 parts of methyl vinyl silicone rubber, 10-15 parts of platinum-chromium compound, 5-10 parts of acetone, 5-10 parts of hydrogen-containing silicone oil, 15-30 parts of 3- (2-methacryloyloxyethyl dimethylamino) propane sulfonate, 8-16 parts of benzoin dimethyl ether and 6-12 parts of benzophenone.
Preferably, in S2, the two-roll mill is kept at normal temperature for mixing, the methyl vinyl silicone rubber is put into the two-roll mill for mixing for 1 to 5min, then the hydrogen-containing silicone oil is added into the two-roll mill for 10 to 20 times, and finally the platinum-chromium compound is added for mixing for 5 to 10 min.
Preferably, in S4, benzophenone and benzoin dimethyl ether are dissolved in an acetone solution to obtain an acetone solution of benzophenone.
Preferably, in S5, the blend is placed into a 50% ethanol solution for ultrasonic cleaning for 10-20min, then dried by blowing air at room temperature, then subjected to plasma treatment for 5-10min, and finally placed into an acetone solution of benzophenone.
Preferably, in the S6, the temperature of the water bath is 35-45 ℃, the sealing time is 1.5-3h, and acetone is volatilized after natural drying for 2-5 h.
Preferably, in S7, the concentration of the 3- (2-methacryloyloxyethyl dimethylamino) propanesulfonate aqueous solution is 0.3g/ml, and the ultraviolet curing device is used for irradiating for 2-10 min.
Preferably, in S8, the polymerized raw material is placed in a 50% ethanol solution for ultrasonic cleaning for 10-20min to remove unreacted 3- (2-methacryloyloxyethyl dimethylamino) propanesulfonate.
Compared with the prior art, the invention has the following beneficial effects: the silica gel nozzle is simple in structure, convenient to assemble and convenient to replace; the silica gel nozzle prepared by the method has the advantages of strong chemical resistance, high temperature resistance, environmental protection, no toxicity, softness, comfort and antibacterial property.
Drawings
The invention is described in further detail below with reference to the following figures and detailed description:
FIG. 1 is a schematic view of a silicone nozzle structure of the tooth irrigator of the present invention;
FIG. 2 is a schematic view of the manufacturing process of the silicone nozzle of the tooth irrigator of the present invention.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
Please refer to fig. 1-2. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
Example 1:
the utility model provides a silica gel nozzle structure for towards tooth ware, spout 1 including the toper setting, the bottom of spout 1 is fixed be provided with rather than the intercommunication, and sleeve pipe 2 as integrated into one piece.
When in use, the inner wall at the bottom port of the sleeve 2 is sleeved on the liquid supply pipe of the tooth flushing device, so that the use is very convenient.
Example 2:
a method for manufacturing a silica gel nozzle for a tooth rinsing device comprises the following steps:
s1, preparing the raw materials according to the weight ratio: methyl vinyl silicone rubber, tetrahydroxypyran, platinum-chromium compounds, acetone, hydrogen-containing silicone oil, N-vinyl pyrrolidone, sodium hyaluronate, hydroxyethyl methacrylate, methacrylic anhydride, 3- (2-methacryloyloxyethyl dimethylamino) propane sulfonate, benzoin dimethyl ether and benzophenone;
s2, sequentially putting methyl vinyl silicone rubber, hydrogen-containing silicone oil and platinum-chromium compound into a double-roll open mill for blending;
s3, putting the blend into a flat vulcanizing machine for vulcanization processing;
s4, preparing an acetone solution of benzophenone;
s5, cleaning and drying the mixture, and putting the mixture into acetone solution of benzophenone;
s6, sealing the mixture in a water bath kettle, taking out the mixture, and naturally drying the mixture;
s7, preparing a 3- (2-methacryloyloxyethyl dimethylamino) propane sulfonate aqueous solution, then putting the dried raw materials into the 3- (2-methacryloyloxyethyl dimethylamino) propane sulfonate aqueous solution, and using an ultraviolet curing device to irradiate for polymerization;
s8, washing the polymerized raw materials to obtain food-grade silica gel;
and S9, molding by using a silicon rubber nozzle mold of the tooth flushing device.
In the S1, the raw materials are in parts by weight: 20-30 parts of methyl vinyl silicone rubber, 10-15 parts of platinum-chromium compound, 5-10 parts of acetone, 5-10 parts of hydrogen-containing silicone oil, 15-30 parts of 3- (2-methacryloyloxyethyl dimethylamino) propane sulfonate, 8-16 parts of benzoin dimethyl ether and 6-12 parts of benzophenone.
In the S2, the double-roll mill is kept at normal temperature for mixing, methyl vinyl silicone rubber is firstly put into the double-roll mill for mixing for 1-5min, then the hydrogen-containing silicone oil is added into the double-roll mill for 10-20 times, and finally the platinum-chromium compound is added for continuously mixing for 5-10 min.
In the step S4, benzophenone and benzoin dimethyl ether are dissolved in an acetone solution to obtain the acetone solution of benzophenone.
And in the S5, the mixture is put into 50% ethanol solution for ultrasonic cleaning for 10-20min, then air is used for blowing and drying at normal temperature, then plasma treatment is carried out for 5-10min, and finally the mixture is put into acetone solution of benzophenone.
In the S6, the temperature of the water bath is 35-45 ℃, the sealing time is 1.5-3h, and acetone is volatilized after natural drying for 2-5 h.
In the S7, the concentration of the 3- (2-methacryloyloxyethyl dimethylamino) propanesulfonate aqueous solution is 0.3g/ml, and the ultraviolet curing device is used for irradiating for 2-10 min.
In the step S8, the polymerized raw materials are put into 50% ethanol solution for ultrasonic cleaning for 10-20min, and unreacted 3- (2-methacryloyloxyethyl dimethylamino) propane sulfonate is removed.
Example 3:
taking the silica gel nozzle of the tooth irrigator prepared in the embodiment 2 for acid and alkali resistance detection:
the samples were placed in solutions of different PH for detection:
as can be seen from the table, the silica gel nozzle prepared by the method has strong chemical resistance.
Example 4:
taking the silica gel nozzle of the tooth flushing device prepared in the embodiment 2 for high temperature resistance detection:
as can be seen from the table, the silica gel nozzle prepared according to the invention is resistant to high temperatures.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (9)
1. The utility model provides a silica gel nozzle structure for towards tooth ware, spout (1) including the toper setting, its characterized in that: the bottom of the nozzle (1) is fixedly provided with a sleeve (2) which is communicated with the nozzle and is integrally formed.
2. A manufacturing method of a silica gel nozzle for a tooth rinsing device is characterized by comprising the following steps:
s1, preparing the raw materials according to the weight ratio: methyl vinyl silicone rubber, platinum chromium compound, acetone, hydrogen-containing silicone oil, 3- (2-methacryloyloxyethyl dimethylamino) propane sulfonate, benzoin dimethyl ether and benzophenone;
s2, sequentially putting methyl vinyl silicone rubber, hydrogen-containing silicone oil and platinum-chromium compound into a double-roll open mill for blending;
s3, putting the blend into a flat vulcanizing machine for vulcanization processing;
s4, preparing an acetone solution of benzophenone;
s5, cleaning and drying the mixture, and putting the mixture into acetone solution of benzophenone;
s6, sealing the mixture in a water bath kettle, taking out the mixture, and naturally drying the mixture;
s7, preparing a 3- (2-methacryloyloxyethyl dimethylamino) propane sulfonate aqueous solution, then putting the dried raw materials into the 3- (2-methacryloyloxyethyl dimethylamino) propane sulfonate aqueous solution, and using an ultraviolet curing device to irradiate for polymerization;
s8, washing the polymerized raw materials to obtain food-grade silica gel;
and S9, molding by using a silicon rubber nozzle mold of the tooth flushing device.
3. The method for manufacturing a silicone nozzle for a dental irrigator according to claim 1, wherein: in the S1, the raw materials are in parts by weight: 20-30 parts of methyl vinyl silicone rubber, 10-15 parts of platinum-chromium compound, 5-10 parts of acetone, 5-10 parts of hydrogen-containing silicone oil, 15-30 parts of 3- (2-methacryloyloxyethyl dimethylamino) propane sulfonate, 8-16 parts of benzoin dimethyl ether and 6-12 parts of benzophenone.
4. The method for manufacturing a silicone nozzle for a dental irrigator according to claim 1, wherein: in the S2, the double-roll mill is kept at normal temperature for mixing, methyl vinyl silicone rubber is firstly put into the double-roll mill for mixing for 1-5min, then the hydrogen-containing silicone oil is added into the double-roll mill for 10-20 times, and finally the platinum-chromium compound is added for continuously mixing for 5-10 min.
5. The method for manufacturing a silicone nozzle for a dental irrigator according to claim 1, wherein: in the step S4, benzophenone and benzoin dimethyl ether are dissolved in an acetone solution to obtain the acetone solution of benzophenone.
6. The method for manufacturing a silicone nozzle for a dental irrigator according to claim 1, wherein: and in the S5, the mixture is put into 50% ethanol solution for ultrasonic cleaning for 10-20min, then air is used for blowing and drying at normal temperature, then plasma treatment is carried out for 5-10min, and finally the mixture is put into acetone solution of benzophenone.
7. The method for manufacturing a silicone nozzle for a dental irrigator according to claim 1, wherein: in the S6, the temperature of the water bath is 35-45 ℃, the sealing time is 1.5-3h, and acetone is volatilized after natural drying for 2-5 h.
8. The method for manufacturing a silicone nozzle for a dental irrigator according to claim 1, wherein: in the S7, the concentration of the 3- (2-methacryloyloxyethyl dimethylamino) propanesulfonate aqueous solution is 0.3g/ml, and the ultraviolet curing device is used for irradiating for 2-10 min.
9. The method for manufacturing a silicone nozzle for a dental irrigator according to claim 1, wherein: in the step S8, the polymerized raw materials are put into 50% ethanol solution for ultrasonic cleaning for 10-20min, and unreacted 3- (2-methacryloyloxyethyl dimethylamino) propane sulfonate is removed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110511721.9A CN113289780B (en) | 2021-05-11 | 2021-05-11 | Silica gel nozzle structure for tooth flushing device and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110511721.9A CN113289780B (en) | 2021-05-11 | 2021-05-11 | Silica gel nozzle structure for tooth flushing device and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113289780A true CN113289780A (en) | 2021-08-24 |
| CN113289780B CN113289780B (en) | 2022-04-01 |
Family
ID=77321310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110511721.9A Active CN113289780B (en) | 2021-05-11 | 2021-05-11 | Silica gel nozzle structure for tooth flushing device and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113289780B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102153802A (en) * | 2011-03-07 | 2011-08-17 | 沭阳优唯新材料有限公司 | Ultraviolet-light deeply cross-linked halogen-free flame-retardant polyolefin cable material and method for preparing ultraviolet-light deeply cross-linked halogen-free flame-retardant polyolefin cable insulating or sheathing layer from same |
| CN102208567A (en) * | 2011-04-18 | 2011-10-05 | 电子科技大学 | Substrate for flexible luminous device and preparation method thereof |
| CN105315676A (en) * | 2015-10-21 | 2016-02-10 | 安徽中马橡塑制品有限公司 | Medical silicone rubber and polyvinyl acetate latex co-polymerized rubber plug and preparation method thereof |
| CN106349712A (en) * | 2016-10-11 | 2017-01-25 | 娄敬涛 | Composition and preparation method of food-grade silicone |
| CN207412252U (en) * | 2017-03-11 | 2018-05-29 | 刘诗锋 | Portable tooth flusher nozzle |
| CN109096765A (en) * | 2018-07-17 | 2018-12-28 | 合肥东恒锐电子科技有限公司 | A kind of flexible hand casing NEW TYPE OF COMPOSITE silica gel |
| CN109706533A (en) * | 2017-10-26 | 2019-05-03 | 中国石油化工股份有限公司 | A kind of antibacterial and mouldproof polypropylene filament yarn and preparation method thereof |
| KR101987597B1 (en) * | 2018-10-23 | 2019-06-11 | 임재진 | Manufacturing method of fireproof door packing |
| CN213098461U (en) * | 2020-05-09 | 2021-05-04 | 珠海大拇指创新科技有限公司 | Tooth flushing device and nozzle thereof |
-
2021
- 2021-05-11 CN CN202110511721.9A patent/CN113289780B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102153802A (en) * | 2011-03-07 | 2011-08-17 | 沭阳优唯新材料有限公司 | Ultraviolet-light deeply cross-linked halogen-free flame-retardant polyolefin cable material and method for preparing ultraviolet-light deeply cross-linked halogen-free flame-retardant polyolefin cable insulating or sheathing layer from same |
| CN102208567A (en) * | 2011-04-18 | 2011-10-05 | 电子科技大学 | Substrate for flexible luminous device and preparation method thereof |
| CN105315676A (en) * | 2015-10-21 | 2016-02-10 | 安徽中马橡塑制品有限公司 | Medical silicone rubber and polyvinyl acetate latex co-polymerized rubber plug and preparation method thereof |
| CN106349712A (en) * | 2016-10-11 | 2017-01-25 | 娄敬涛 | Composition and preparation method of food-grade silicone |
| CN207412252U (en) * | 2017-03-11 | 2018-05-29 | 刘诗锋 | Portable tooth flusher nozzle |
| CN109706533A (en) * | 2017-10-26 | 2019-05-03 | 中国石油化工股份有限公司 | A kind of antibacterial and mouldproof polypropylene filament yarn and preparation method thereof |
| CN109096765A (en) * | 2018-07-17 | 2018-12-28 | 合肥东恒锐电子科技有限公司 | A kind of flexible hand casing NEW TYPE OF COMPOSITE silica gel |
| KR101987597B1 (en) * | 2018-10-23 | 2019-06-11 | 임재진 | Manufacturing method of fireproof door packing |
| CN213098461U (en) * | 2020-05-09 | 2021-05-04 | 珠海大拇指创新科技有限公司 | Tooth flushing device and nozzle thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113289780B (en) | 2022-04-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113289780B (en) | Silica gel nozzle structure for tooth flushing device and manufacturing method thereof | |
| US6784397B2 (en) | Mold release and anti-blocking coating for powder-free natural of synthetic rubber articles | |
| CN100999883A (en) | Degradable disposable medical nursing article and mfg. method thereof | |
| CN111282885B (en) | Medical instrument disinfection belt cleaning device of prevention infection source propagation | |
| CN109735114A (en) | Seal ring for drum-type washing silicon rubber nano composite material and preparation method thereof | |
| CN106958032B (en) | A kind of plastic-aluminum crack cleaning agent | |
| CN112643961A (en) | Production device and production method of degradable low-carbon environment-friendly bio-based sponge | |
| KR101236758B1 (en) | Method for manufacturing rubber gloves having embossing in the inside surface of the gloves | |
| CN109627480A (en) | A kind of flexible rubber based super hydrophobic material preparation method | |
| CN211096547U (en) | Clinical cleaning tube for gynaecology | |
| CN211383400U (en) | Gel administration device for women | |
| CN107418778A (en) | A kind of non-pigment without essence laundry sheet and preparation method thereof | |
| CN113583291A (en) | Sponge with good mildew-proof and antibacterial effects and preparation method thereof | |
| CN210304799U (en) | Medical instrument disinfection device for hospital and hospital department | |
| CN219764125U (en) | Postpartum vulva cleaning device | |
| CN108553242A (en) | A kind of moving shampooing instrument | |
| CN207055405U (en) | A kind of water circulation bathtub of the decontamination system containing filtering | |
| CN108814858A (en) | A kind of multi-functional washing device for hair of nursing | |
| CN109749151A (en) | A kind of nano silver antibacterial latex preparation method | |
| CN213972154U (en) | Drying equipment for high-strength plastic products | |
| CN213823123U (en) | Gynaecology is with sending into formula medicine applicator | |
| CN110483850A (en) | A kind of latex foam, preparation method and the application on insert of brassiere | |
| CN201752909U (en) | Silicone rubber piece manufacturing mold | |
| CN215687357U (en) | Circulating hydrothermal electric towel rack | |
| CN213158361U (en) | Gynaecology's vulva disinfection belt cleaning device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |