CN107903433A - Antibacterial sponge microphone cover and preparation method thereof - Google Patents
Antibacterial sponge microphone cover and preparation method thereof Download PDFInfo
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- CN107903433A CN107903433A CN201710982226.XA CN201710982226A CN107903433A CN 107903433 A CN107903433 A CN 107903433A CN 201710982226 A CN201710982226 A CN 201710982226A CN 107903433 A CN107903433 A CN 107903433A
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- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/28—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by elimination of a liquid phase from a macromolecular composition or article, e.g. drying of coagulum
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- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
- C08J9/102—Azo-compounds
- C08J9/103—Azodicarbonamide
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- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
- C08J9/104—Hydrazines; Hydrazides; Semicarbazides; Semicarbazones; Hydrazones; Derivatives thereof
- C08J9/105—Hydrazines; Hydrazides; Semicarbazides; Semicarbazones; Hydrazones; Derivatives thereof containing sulfur
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- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
- C08K5/0058—Biocides
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- C08J2201/00—Foams characterised by the foaming process
- C08J2201/04—Foams characterised by the foaming process characterised by the elimination of a liquid or solid component, e.g. precipitation, leaching out, evaporation
- C08J2201/048—Elimination of a frozen liquid phase
- C08J2201/0484—Elimination of a frozen liquid phase the liquid phase being aqueous
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- C08J2203/04—N2 releasing, ex azodicarbonamide or nitroso compound
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- C08J2405/00—Characterised by the use of polysaccharides or of their derivatives not provided for in groups C08J2401/00 or C08J2403/00
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Abstract
The invention discloses a kind of antibacterial sponge microphone cover and preparation method thereof, this method includes:Konjaku flour, antibacterial filler, foaming agent, wetting agent and gelling agent are added in boiling water and are stirred obtained feed liquid M1;The feed liquid M1 is transferred in sponge-type embryo, at room temperature stand after be heat-treated be made material embryo;Directly antibacterial sponge is made in vacuum freeze drying after the material embryo is freezed;The antibacterial sponge is molded, cuts out the i.e. obtained antibacterial sponge microphone cover.The toughness of the antibacterial sponge microphone cover is high and anti-microbial property is excellent, can effectively prevent microphone user from bacterium infection or cross-infection occurs.The raw material sources of the antibacterial sponge microphone cover are extensive and durable environmental protection, suitable for widely using.
Description
Technical field
The present invention relates to sponge manufacturing field, and in particular, to a kind of antibacterial sponge microphone cover and preparation method thereof.
Background technology
Sponge products it is widely used, such as face cleaning is flutterred, cleaning sponge and sanitary microphone cover etc..Wherein, microphone is either
The speech ciphering equipments such as microphone, all can frequently use in daily life and work, rise and the prevalence of especially current network direct broadcasting
Under trend, the routine work of main broadcasters is exactly against microphone or microphone.
It is well known that when using microphone or microphone, mouth is closer apart from the distance of microphone, so whether makes
With public place microphone in place such as KTV, bar or it is live when main broadcaster dedicated microphone, microphone, using one section
It all can cause microphone surface moisture after time and easily grow bacterium, so may result in microphone user and be easily subject to bacterium sense
Even germ cross-infection is contaminated, so as to seriously affect the health of user.
At present, microphone cover is as a kind of a kind of one of effective measures that can reduce the growth of microphone surface bacteria, but very
More businessmans are unwilling to replace microphone cover in time for cost-effective or workload, and most microphone cover is only merely general at present
Logical sponges cover either nonwoven cloth case, its antibacterial, bacteriostasis property are much insufficient.Therefore, the anti-microbial property of sponge product is particularly
It is important.And it is current, although having many documents (CN101423613, CN102512355A) it has been reported that some environmentally friendly konjaku seas
Continuous product and preparation method thereof, but not publicly how to further improve the anti-microbial property of sponge product.
The content of the invention
The object of the present invention is to provide a kind of antibacterial sponge microphone cover and preparation method thereof, the antibacterial sponge microphone cover it is tough
Property high and anti-microbial property it is excellent, can effectively prevent microphone user from bacterium infection or cross-infection occurs.The antibacterial sponge
The raw material sources of microphone cover are extensive and durable environmental protection, suitable for widely using.
To achieve these goals, the present invention provides a kind of preparation method of antibacterial sponge microphone cover, this method to include:
Konjaku flour, antibacterial filler, foaming agent, wetting agent and gelling agent are added in boiling water and are stirred obtained feed liquid
M1;
The feed liquid M1 is transferred in sponge-type embryo, at room temperature stand after be heat-treated be made material embryo;
Directly antibacterial sponge is made in vacuum freeze drying after the material embryo is freezed;
The antibacterial sponge is molded, cuts out the i.e. obtained antibacterial sponge microphone cover.
Through the above technical solutions, present invention selection is straight by konjaku flour, antibacterial filler, foaming agent, wetting agent and gelling agent
Connect to be added in the lump in boiling water and be stirred to obtain feed liquid M1;Then feed liquid M1 stood, be thermally treated resulting in material embryo;Finally
Directly vacuum freeze drying is antibacterial sponge to be made and then processes the antibacterial sponge microphone cover has been made after material embryo freezing.The system
Foaming agent and other components are added in boiling water in the lump in Preparation Method feed liquid M1, material embryo and sponge has been made, processing step letter
Single, obtained sponge microphone cover anti-microbial property is excellent, can widely use.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Embodiment
The embodiment of the present invention is described in detail below.It is it should be appreciated that described herein specific
Embodiment is merely to illustrate and explain the present invention, and is not intended to limit the invention.
The endpoint of disclosed scope and any value are not limited to the accurate scope or value herein, these scopes or
Value should be understood to comprising the value close to these scopes or value.For number range, between the endpoint value of each scope, respectively
It can be combined with each other between the endpoint value of a scope and single point value, and individually between point value and obtain one or more
New number range, these number ranges should be considered as specific open herein.
The present invention provides a kind of preparation method of antibacterial sponge microphone cover, including:
Konjaku flour, antibacterial filler, foaming agent, wetting agent and gelling agent are added in boiling water and are stirred obtained feed liquid
M1;
The feed liquid M1 is transferred in sponge-type embryo, at room temperature stand after be heat-treated be made material embryo;
Directly antibacterial sponge is made in vacuum freeze drying after the material embryo is freezed;
The antibacterial sponge is molded, cuts out the i.e. obtained antibacterial sponge microphone cover.
In above-mentioned technical proposal, the specific dosage of each raw material can select in wide scope, but in order to further carry
The anti-microbial property of antibacterial sponge microphone cover made from height, it is preferable that the konjaku flour, antibacterial filler, foaming agent, wetting agent, solidifying
The weight ratio of jelly and boiling water is 100: 10~15: 1~2: 3~5: 5~8: 100~150.
In above-mentioned technical proposal, the rotating speed of the stirring can select in wide scope, but in order to further improve
Mutual synergistic effect between preparation efficiency and mixing effect and then raising raw material, it is preferable that the rotating speed of the stirring is 3000
~5000rpm.
In above-mentioned technical proposal, the time of the standing can control in wide scope, but in order to further improve
Preparation efficiency and standing effect and then raising anti-microbial property, it is preferable that the time of the standing is 6~8h.
In above-mentioned technical proposal, the condition of the heat treatment can control in wide scope, but in order to further carry
High preparation efficiency and thermal effectiveness and then improve anti-microbial property, it is preferable that the condition of the heat treatment is:Temperature for 100~
120 DEG C, and/or the time is 3~5h.
In above-mentioned technical proposal, the freezing, vacuum drying condition can control in wide scope, but in order to
Further improve preparation efficiency and refrigerating effect, drying effect, it is preferable that the condition of the freezing is:Temperature for -10 DEG C~-
25 DEG C, and/or the time is 2-3d;
The condition of the vacuum freeze drying is:Pressure is 10-15Pa, and temperature is -25 DEG C~-40 DEG C, time 3-5h.
In above-mentioned technical proposal, control in the scope that the specific species of the foaming agent, wetting agent and gelling agent can be wide
System, but in order to further improve the anti-microbial property of obtained antibacterial sponge microphone cover, it is preferable that
The foaming agent is the one or more in blowing agent AC, blowing agent H, foaming agent OBSH and foaming agent TSH;
The wetting agent is glycerine and/or sorbierite;
The gelling agent is potassium carbonate, saleratus, sodium carbonate, calcium carbonate, calcium bicarbonate, calcium lactate, calcium oxide and hydrogen
One or more in calcium oxide.
In above-mentioned technical proposal, control in the scope that the source of the antibacterial filler or species can be wide, but in order to
Further improve the anti-microbial property of obtained antibacterial sponge microphone cover, it is preferable that the antibacterial filler is made by following methods:Will
Tealeaves, the leaf of bamboo, eucalyptus leaves, the root of Dahurain angelica, cape jasmine, Cortex Magnoliae Officinalis, Cortex Phellodendri, bush, ophiopogon, folium isatidis, peppermint, Schisandra chinensis are added to limewash
In mixed, boiling be made slurry;
The slurry is rinsed, shines white, dnockout, drying, grinding with obtained coarse fodder;
Glycan, allicin and green alga hydrochlorate are added in the coarse fodder and mixed;
It is the tealeaves, limewash, the leaf of bamboo, eucalyptus leaves, the root of Dahurain angelica, cape jasmine, Cortex Magnoliae Officinalis, Cortex Phellodendri, bush, ophiopogon, folium isatidis, thin
Lotus, Schisandra chinensis, chitosan, the weight ratio of allicin and green alga hydrochlorate are 100: 120-150: 10-15: 5-15: 1-5: 1-5: 5-
10∶1-5∶1-5∶1-5∶1-5∶1-5∶5-9∶5-10∶1-5∶1-3。
In above-mentioned technical proposal, the boiling, the condition of drying can control in wide scope, but in order to further
Improve the effect of preparation efficiency and boiling and then improve anti-microbial property, it is preferable that the condition of the boiling is:Temperature is 120-
150 DEG C, and/or the time is 4-7d;
The condition of the drying is:Temperature is 50-60 DEG C, and/or the time is 12-24h;
The mean particle size of the coarse fodder is 50-100 μm.
Present invention also offers antibacterial sponge microphone cover made from a kind of above-mentioned preparation method.
The present invention will be described in detail by way of examples below.
Preparation example 1
Tealeaves, the leaf of bamboo, eucalyptus leaves, the root of Dahurain angelica, cape jasmine, Cortex Magnoliae Officinalis, Cortex Phellodendri, bush, ophiopogon, folium isatidis, peppermint, Schisandra chinensis are added
Enter mixed into limewash, at 120 DEG C boiling 7d be made slurry;
The slurry is rinsed, shines white, dnockout and 24h is dried at 50 DEG C, (particle is put down so that coarse fodder is made for grinding
Equal particle diameter is 50 μm);
Chitosan, allicin and green alga hydrochlorate are added in the coarse fodder to be mixed the antibacterial filler is made
W1;
Wherein, the tealeaves, limewash, the leaf of bamboo, eucalyptus leaves, the root of Dahurain angelica, cape jasmine, Cortex Magnoliae Officinalis, Cortex Phellodendri, bush, ophiopogon, smalt
Leaf, peppermint, Schisandra chinensis, chitosan, the weight ratio of allicin and green alga hydrochlorate are 100: 120: 10: 5: 1: 1: 5: 1: 1: 1: 1: 1:
5∶5∶1∶13。
Preparation example 2
Tealeaves, the leaf of bamboo, eucalyptus leaves, the root of Dahurain angelica, cape jasmine, Cortex Magnoliae Officinalis, Cortex Phellodendri, bush, ophiopogon, folium isatidis, peppermint, Schisandra chinensis are added
Enter mixed into limewash, at 130 DEG C boiling 5d be made slurry;
The slurry is rinsed, shines white, dnockout and 20h is dried at 55 DEG C, (particle is put down so that coarse fodder is made for grinding
Equal particle diameter is 80 μm);
Chitosan, allicin and green alga hydrochlorate are added in the coarse fodder to be mixed the antibacterial filler is made
W2;
Wherein, the tealeaves, limewash, the leaf of bamboo, eucalyptus leaves, the root of Dahurain angelica, cape jasmine, Cortex Magnoliae Officinalis, Cortex Phellodendri, bush, ophiopogon, smalt
Leaf, peppermint, Schisandra chinensis, chitosan, the weight ratio of allicin and green alga hydrochlorate are 100: 130: 12: 10: 3: 3: 8: 3: 3: 3: 3: 3
∶6∶8∶3∶2。
Preparation example 3
Tealeaves, the leaf of bamboo, eucalyptus leaves, the root of Dahurain angelica, cape jasmine, Cortex Magnoliae Officinalis, Cortex Phellodendri, bush, ophiopogon, folium isatidis, peppermint, Schisandra chinensis are added
Enter mixed into limewash, at 150 DEG C boiling 4d be made slurry;
The slurry is rinsed, shines white, dnockout and 12h is dried at 60 DEG C, (particle is put down so that coarse fodder is made for grinding
Equal particle diameter is 100 μm);
Chitosan, allicin and green alga hydrochlorate are added in the coarse fodder to be mixed the antibacterial filler is made
W3;
Wherein, the tealeaves, limewash, the leaf of bamboo, eucalyptus leaves, the root of Dahurain angelica, cape jasmine, Cortex Magnoliae Officinalis, Cortex Phellodendri, bush, ophiopogon, smalt
Leaf, peppermint, Schisandra chinensis, chitosan, the weight ratio of allicin and green alga hydrochlorate are 100: 150: 15: 15: 5: 5: 10: 5: 5: 5: 5:
5∶9∶10∶5∶3。
Preparation example 4
Antibacterial filler W4 is made in method according to preparation example 1, the difference is that not adding tealeaves.
Preparation example 5
Antibacterial filler W5 is made in method according to preparation example 1, the difference is that not adding the leaf of bamboo.
Preparation example 6
Antibacterial filler W6 is made in method according to preparation example 1, the difference is that not adding eucalyptus leaves.
Preparation example 7
Antibacterial filler W7 is made in method according to preparation example 1, the difference is that not adding chitosan.
Preparation example 8
Antibacterial filler W8 is made in method according to preparation example 1, the difference is that not adding allicin.
Preparation example 9
Antibacterial filler W9 is made in method according to preparation example 1, the difference is that not adding green alga hydrochlorate.
Embodiment 1
Konjaku flour, antibacterial filler W1, blowing agent AC, glycerine and saleratus are added in boiling water, are in rotating speed
Obtained feed liquid M1 is stirred under 3000rpm, wherein, the konjaku flour, antibacterial filler W1, blowing agent AC, glycerine, saleratus
Weight ratio with boiling water is 100:10:1:3:5:100;
The feed liquid M1 is transferred in sponge-type embryo, at 25 DEG C of room temperature stand 6h after, 100 DEG C be heat-treated 5h material is made
Embryo;
The material embryo is freezed at -10 DEG C DEG C to after 3d directly vacuum freeze drying, and (vacuum freeze drying condition is:Pressure
For 10Pa, temperature is -25 DEG C, time 5h) antibacterial sponge is made, the antibacterial sponge is molded, is cut out i.e.
The antibacterial sponge microphone cover is made, is denoted as A1.
Embodiment 2
Konjaku flour, antibacterial filler W2, blowing agent H, sorbierite and sodium carbonate are added in boiling water, are in rotating speed
Obtained feed liquid M1 is stirred under 4000rpm, wherein, the konjaku flour, antibacterial filler W2, blowing agent H, sorbierite, sodium carbonate
Weight ratio with boiling water is 100: 12: 2: 4: 6: 120;
The feed liquid M1 is transferred in sponge-type embryo, at 25 DEG C of room temperature stand 7h after, 110 DEG C be heat-treated 4h material is made
Embryo;
The material embryo is freezed at -20 DEG C to after 3d directly vacuum freeze drying, and (vacuum freeze drying condition is:Pressure is
13Pa, temperature are -30 DEG C, time 4h) antibacterial sponge is made, the antibacterial sponge is molded, cuts out and makes
The antibacterial sponge microphone cover is obtained, is denoted as A2.
Embodiment 3
Konjaku flour, antibacterial filler W3, foaming agent TSH, glycerine and calcium hydroxide are added in boiling water, are in rotating speed
Obtained feed liquid M1 is stirred under 5000rpm, wherein, the konjaku flour, antibacterial filler W3, foaming agent TSH, glycerine, hydroxide
The weight ratio of calcium and boiling water is 100:15:2:5:8:150;
The feed liquid M1 is transferred in sponge-type embryo, at 25 DEG C of room temperature stand 8h after, 120 DEG C be heat-treated 3h material is made
Embryo;
The material embryo is freezed at -25 DEG C to after 2d directly vacuum freeze drying, and (vacuum freeze drying condition is:Pressure is
15Pa, temperature are -40 DEG C, time 3h) antibacterial sponge is made, the antibacterial sponge is molded, cuts out and makes
The antibacterial sponge microphone cover is obtained, is denoted as A3.
Embodiment 4
The antibacterial sponge microphone cover is prepared Following the procedure of Example 1, is denoted as A5;The difference is that the antibacterial filler used
W4。
Embodiment 5
The antibacterial sponge microphone cover is prepared Following the procedure of Example 1, is denoted as A5;The difference is that the antibacterial filler used
W5。
Embodiment 6
The antibacterial sponge microphone cover is prepared Following the procedure of Example 1, is denoted as A6;The difference is that the antibacterial filler used
W6。
Embodiment 7
The antibacterial sponge microphone cover is prepared Following the procedure of Example 1, is denoted as A7;The difference is that the antibacterial filler used
W7。
Embodiment 8
The antibacterial sponge microphone cover is prepared Following the procedure of Example 1, is denoted as A8;The difference is that the antibacterial filler used
W8。
Embodiment 9
The antibacterial sponge microphone cover is prepared Following the procedure of Example 1, is denoted as A9;The difference is that the antibacterial filler used
W9。
Comparative example 1
The antibacterial sponge microphone cover is prepared Following the procedure of Example 1, is denoted as D1;The difference is that not adding antibacterial filler
W1。
Comparative example 2
The antibacterial sponge microphone cover is prepared Following the procedure of Example 1, is denoted as D2;The difference is that freezing does not carry out vacuum
Freeze-drying but natural air drying.
Comparative example 3
The antibacterial sponge microphone cover is prepared Following the procedure of Example 1, is denoted as D3;The difference is that do not carry out standing directly
Heat treatment.
Detect example 1
Obtained antibacterial sponge microphone cover A1-A9 and D1-D3 are placed in 25-30 DEG C of open environment, and air
Humidity is 8 grams of water/m3, total plate count (n/cfug is detected by the method for national standard GB 4789.2-2010 after 7 days-1), specifically
It the results are shown in Table 1.
Table 1
The preferred embodiment of the present invention described in detail above, still, during present invention is not limited to the embodiments described above
Detail, in the range of the technology design of the present invention, a variety of simple variants can be carried out to technical scheme, this
A little simple variants belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned embodiment, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should equally be considered as content disclosed in this invention.
Claims (10)
- A kind of 1. preparation method of antibacterial sponge microphone cover, it is characterised in that including:Konjaku flour, antibacterial filler, foaming agent, wetting agent and gelling agent are added in boiling water and are stirred obtained feed liquid M1;The feed liquid M1 is transferred in sponge-type embryo, at room temperature stand after be heat-treated be made material embryo;Directly antibacterial sponge is made in vacuum freeze drying after the material embryo is freezed;The antibacterial sponge is molded, cuts out the i.e. obtained antibacterial sponge microphone cover.
- 2. preparation method according to claim 1, wherein, the konjaku flour, antibacterial filler, foaming agent, wetting agent, gel The weight ratio of agent and water is 100:10~15:1~2:3~5:5~8:100~150.
- 3. preparation method according to claim 1, wherein, the rotating speed of the stirring is 3000~5000rpm.
- 4. preparation method according to claim 1, wherein, the time of the standing is 6~8h.
- 5. preparation method according to claim 1, wherein, the condition of the heat treatment is:Temperature is 100~120 DEG C, And/or the time is 3~5h.
- 6. the preparation method according to any one in Claims 1 to 5, wherein, the condition of the freezing is:Temperature for- 10 DEG C~-25 DEG C, and/or the time is 2-3d;The condition of the vacuum freeze drying is:Pressure is 10-15Pa, and temperature is -25 DEG C~-40 DEG C, time 3-5h.
- 7. according to the preparation method described in any one in Claims 1 to 5,6, wherein, the foaming agent is blowing agent AC, hair One or more in infusion H, foaming agent OBSH and foaming agent TSH;The wetting agent is glycerine and/or sorbierite;The gelling agent is potassium carbonate, saleratus, sodium carbonate, calcium carbonate, calcium bicarbonate, calcium lactate, calcium oxide and hydroxide One or more in calcium.
- 8. preparation method according to claim 1, wherein, the antibacterial filler is made by following methods:By tealeaves, bamboo Leaf, eucalyptus leaves, the root of Dahurain angelica, cape jasmine, Cortex Magnoliae Officinalis, Cortex Phellodendri, bush, ophiopogon, folium isatidis, peppermint, Schisandra chinensis are added in limewash and carry out Mixing, boiling are with obtained slurry;The slurry is rinsed, shines white, dnockout, drying, grinding with obtained coarse fodder;Chitosan, allicin and green alga hydrochlorate are added in the coarse fodder mixed i.e. be made the sponge filled out with antibacterial Material;The tealeaves, limewash, the leaf of bamboo, eucalyptus leaves, the root of Dahurain angelica, cape jasmine, Cortex Magnoliae Officinalis, Cortex Phellodendri, bush, ophiopogon, folium isatidis, peppermint, five Taste, chitosan, the weight ratio of allicin and green alga hydrochlorate are 100:120-150:10-15:5-15:1-5:1-5:5-10:1- 5:1-5:1-5:1-5:1-5:5-9:5-10:1-5:1-3.
- 9. preparation method according to claim 8, wherein, the condition of the boiling is:Temperature is 120-150 DEG C, and/or Time is 4-7d;The condition of the drying is:Temperature is 50-60 DEG C, and/or the time is 12-24h;The mean particle size of the coarse fodder is 50-100 μm.
- 10. antibacterial sponge microphone cover made from the preparation method in a kind of 1-9 as claim described in any one.
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CN2171964Y (en) * | 1993-09-21 | 1994-07-13 | 李自强 | Sterilized cover for microphone |
CN1094207A (en) * | 1993-04-10 | 1994-10-26 | 张心玉 | Disinfecting cover for telephone |
CN102585300A (en) * | 2012-01-06 | 2012-07-18 | 周允 | Plant fiber sponge with effects of diminishing inflammation and detoxifying and preparation method for plant fiber sponge |
CN103686520A (en) * | 2012-09-22 | 2014-03-26 | 青岛道合生物科技有限公司 | Biological antibacterial microphone sleeve |
-
2017
- 2017-10-20 CN CN201710982226.XA patent/CN107903433A/en active Pending
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CN1094207A (en) * | 1993-04-10 | 1994-10-26 | 张心玉 | Disinfecting cover for telephone |
CN2171964Y (en) * | 1993-09-21 | 1994-07-13 | 李自强 | Sterilized cover for microphone |
CN102585300A (en) * | 2012-01-06 | 2012-07-18 | 周允 | Plant fiber sponge with effects of diminishing inflammation and detoxifying and preparation method for plant fiber sponge |
CN103686520A (en) * | 2012-09-22 | 2014-03-26 | 青岛道合生物科技有限公司 | Biological antibacterial microphone sleeve |
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Title |
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许伟石等: "《烧伤创面修复》", 31 December 2013 * |
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Application publication date: 20180413 |