CN108124206A - A kind of water resistant speaker veil and preparation method thereof - Google Patents
A kind of water resistant speaker veil and preparation method thereof Download PDFInfo
- Publication number
- CN108124206A CN108124206A CN201711374084.5A CN201711374084A CN108124206A CN 108124206 A CN108124206 A CN 108124206A CN 201711374084 A CN201711374084 A CN 201711374084A CN 108124206 A CN108124206 A CN 108124206A
- Authority
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- China
- Prior art keywords
- chemical fibre
- net
- water resistant
- filter pulp
- fluorine
- 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.)
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/02—Layer formed of wires, e.g. mesh
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/14—Layered products comprising a layer of metal next to a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/18—Layered products comprising a layer of metal comprising iron or steel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/02—Coating on the layer surface on fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/26—Polymeric coating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/726—Permeability to liquids, absorption
- B32B2307/7265—Non-permeable
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Manufacturing & Machinery (AREA)
- Paper (AREA)
Abstract
The invention discloses a kind of speaker water resistant veils and preparation method thereof.Production method：Step 1, respectively in filter pulp and the suitable liquid mixed by fluorine-contaninig polyacrylate and isocyanate crosslinking of the online face dip-coating of chemical fibre；Step 2 is painted with intermixture and dries after five minutes, placed in the middle with chemical fibre net, in each compound one layer of filter pulp in chemical fibre net both sides, selects 3~5 point silk threads seam connection, forms dust-proof, water resistant entrant sound net.Step 3, entrant sound net are superimposed together to form speaker veil with iron net again, are fixed by screws on sound box.The present invention in persistently drenching with rain, playback always with drench with rain before indifference, meet the requirement of normal use in wind and rain well.Chemical fibre net and filter pulp immersion and rinsing is multiple, and hydrophobicity performance is unchanged, and water-resistance is lasting, and speaker dust and water protection grade is high, efficiently solves the deficiencies in the prior art.
Description
Technical field
The present invention relates to speaker technology fields more particularly to a kind of water resistant speaker veil and preparation method thereof.
Background technology
There is veil in the front of speaker, and veil is generally made of one layer of iron net and one layer of filter pulp.The function of iron net is to sound
Electro-acoustic element in case gives mechanical protection, sound wave remains to smooth outflow；The function of filter pulp predominantly beautifies veil vision, stops
Bulky grain dust.
When speaker must be outdoor in use, box portion readily satisfies the requirement of anti-rainwater, and veil does not have rainwater
Resist power.Rainwater can penetrate veil into cartonning, even if not damaging electro-acoustic element, the filter pulp of veil can be aqueous and significantly affect sound
Sound is spread out of, and even more serious, cause tone color oppressiveness, slurred speech are damaged to high pitch；Even if the rain has stopped, the water in filter pulp also slowly will not
It is absolutely dry；Filter pulp can stop bulky grain dust, it is impossible to stop the little particle dust in wind.
Therefore, it is outdoor to use speaker, it is desirable to which that veil should prevent water and dust from invading, again in lasting drench with rain also not
Volume tone color can be influenced, this is open question so far in industry.The outdoor loudspeaker box of internationally famous brand, also can not be complete
Prevent rainwater from invading entirely, it is impossible to avoid not influencing acoustic pressure and tone color still in the rain.
The content of the invention
In view of the drawbacks described above of the prior art, the technical problems to be solved by the invention are to provide a kind of water resistant speaker face
Net and preparation method thereof, to solve the deficiencies in the prior art.
To achieve the above object, the present invention provides a kind of water resistant speaker veil, including two layers of filter pulp, chemical fibre net, fluorine-containing
Polyacrylate, isocyanate crosslinking and iron net, the filter pulp and the online face dip-coating fluorine-contaninig polyacrylate of chemical fibre and isocyanide
The filter pulp of acid esters crosslinking agent, the chemical fibre net both sides difference composite coated fluorine-contaninig polyacrylate and isocyanate crosslinking.
A kind of above-mentioned water resistant speaker veil, the chemical fibre net both sides pass through silk thread number point suture coating fluorine-containing poly- third respectively
The filter pulp of olefin(e) acid ester and isocyanate crosslinking.
A kind of above-mentioned water resistant speaker veil, the chemical fibre net select 250 mesh nets or 300 mesh nets.
A kind of production method of water resistant speaker veil as described in claim 1, comprises the following steps：
It is step 1, suitable by fluorine-contaninig polyacrylate and isocyanate-crosslinked in filter pulp and the online face dip-coating of chemical fibre respectively
Water resistant that agent mixes, antifouling intermixture；
Step 2 is painted with intermixture and dries after five minutes, placed in the middle with chemical fibre net, in each compound one layer of filter pulp in chemical fibre net both sides,
3~5 point silk thread seam connection are selected, form dust-proof, water resistant entrant sound net.
A kind of production method of above-mentioned water resistant speaker veil, dust-proof, the water resistant entrant sound net and iron net are superimposed together,
It is fixed by screws on sound box.
A kind of production method of above-mentioned water resistant speaker veil, the step 1 is in filter pulp and online 1~2 μ of face dip-coating of chemical fibre
The intermixture that m is mixed by fluorine-contaninig polyacrylate and isocyanate crosslinking.
The beneficial effects of the invention are as follows：
The present invention water resistant speaker veil, in persistently drenching with rain, playback always with drench with rain before indifference, meet well
The requirement of normal use in wind and rain.By chemical fibre net and filter pulp immersion and rinsing for several times, hydrophobicity performance is unchanged, and water resistance is held
Long, speaker dust and water protection grade is high, efficiently solves the deficiencies in the prior art.
The technique effect of the design of the present invention, concrete structure and generation is described further below with reference to attached drawing, with
It is fully understood from the purpose of the present invention, feature and effect.
Description of the drawings
Fig. 1 is the structure diagram of the present invention.
Specific embodiment
As shown in Figure 1, a kind of water resistant speaker veil, including two layers of filter pulp, chemical fibre net, fluorine-contaninig polyacrylate, isocyanic acid
Ester crosslinking agent and iron net, the filter pulp and the online face dip-coating fluorine-contaninig polyacrylate of chemical fibre and isocyanate crosslinking, describedization
Distinguish the filter pulp of composite coated fluorine-contaninig polyacrylate and isocyanate crosslinking in fibre web both sides.
In the present embodiment, the chemical fibre net both sides suture coating fluorine-contaninig polyacrylate and isocyanide by silk thread number point respectively
The filter pulp of acid esters crosslinking agent.
In the present embodiment, the chemical fibre net selects 250 mesh nets or 300 mesh nets.
A kind of production method of water resistant speaker veil as described in claim 1, comprises the following steps：
It is step 1, suitable by fluorine-contaninig polyacrylate and isocyanate-crosslinked in filter pulp and the online face dip-coating of chemical fibre respectively
Water resistant that agent mixes, antifouling intermixture；
Step 2 is painted with intermixture and dries after five minutes, placed in the middle with chemical fibre net, in each compound one layer of filter pulp in chemical fibre net both sides,
3~5 point silk thread seam connection are selected, form dust-proof, water resistant entrant sound net.
In the present embodiment, dust-proof, the water resistant entrant sound net and iron net are superimposed together, and are fixed by screws in sound box
On.
In the present embodiment, the step 1 is in 1~2 μm of filter pulp and the online face dip-coating of chemical fibre by fluorine-contaninig polyacrylate and different
The intermixture that isocyanate cross-linking agent mixes.
The principle of the present invention is analyzed in detail below：
According to national standard《Electrical appliance enclosure degree of protection》To dust-proof regulation, " through pore size for 0.075mm ×
The talcum powder (being equivalent to 200 mesh fineness) that the sieve of 0.075mm is sieved through would not be blown into." this fineness dust, filter pulp is
Stop incessantly, sandwich this stratification fibre web, will can stop the dust of this fineness first.Therefore chemical fibre net 200 mesh, 250 mesh,
Examination is selected in 300 mesh, the present embodiment selects 250 mesh nets and 300 mesh nets can be reliable dust-proof, and dry state does not influence sound wave outflow.
The chemical fibre net and original filter pulp of addition, are all hydrophilic., can be wetted after meeting with water drenching, especially chemical fibre net
All micropores are blocked up by water seal, and strainer becomes water membrane.Survey frequency response curve, after water drenching than before acoustic pressure significantly reduce 10db~
15dB, high band influence is heavier, and sound becomes smaller and oppressiveness is unclear, unacceptable.
Surface modification is done to chemical fibre net and filter pulp, it is made to become hydrophobic from hydrophilic, has some methods, such as waxing applies silicon
Oil etc., but coating it is thin it is not sufficiently effective, apply thickness influence sound, particularly all cannot persistently effectively.Through largely finding, sieving
Choosing and on probation, definite fluorine-containing polyacrylate coating, while adhesive force is improved with isocyanate crosslinking, modified layer also only has
1~2 μm, it is penetrating sound is not interfered with.Processed chemical fibre net and filter pulp, submerged lift again, without attached water, also completely
Not wetted, hydrophobic effect is fabulous.
250 mesh nets and 300 mesh nets is selected to make 3 sample tests respectively, as a result such as following table：
Waterproof test records
Explanation：
1. the damage test of dry state sound, sound source is done with same speaker, directly cover combine by test agent, microphone is always same
One position, same signal source amplitude.
2. the damage test of hygrometric state sound, the sample combined first uniform water drenching are erect afterwards to not dripping, are surveyed with ibid method
Examination.
Compare test 3. blocking water, apart from 0.15 meter of vertical water spray of veil, sample water spray cannot penetrate into another side.Even if
After immersion rinsing, performance is also unchanged.
After tested, water resistant speaker veil of the invention, in persistently drenching with rain, playback always with drench with rain before basic indifference,
The requirement of normal use in wind and rain is met well.By chemical fibre net and filter pulp immersion and rinsing for several times, hydrophobicity performance is without change
Change, water resistance is lasting.So far, speaker dust and water protection grade can reach IP66 grades (dirt close, fierce water spray).
The preferred embodiment of the present invention described in detail above.It should be appreciated that those of ordinary skill in the art without
Creative work is needed according to the present invention can to conceive and makes many modifications and variations.Therefore, all technologies in the art
Personnel are available by logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Technical solution, all should be in the protection domain being defined in the patent claims.
Claims (6)
1. a kind of water resistant speaker veil, it is characterised in that：Including two layers of filter pulp (2), chemical fibre net (1), fluorine-contaninig polyacrylate, different
Isocyanate cross-linking agent and iron net, the filter pulp (2) and chemical fibre net (1) dip-coating fluorine-contaninig polyacrylate and isocyanate-crosslinked above
The filter pulp (2) of agent, chemical fibre net (1) the both sides difference composite coated fluorine-contaninig polyacrylate and isocyanate crosslinking.
2. a kind of water resistant speaker veil as described in claim 1, it is characterised in that：Chemical fibre net (1) both sides pass through respectively
The filter pulp (2) of silk thread number point suture coating fluorine-contaninig polyacrylate and isocyanate crosslinking.
3. a kind of water resistant speaker veil as described in claim 1, it is characterised in that：The chemical fibre net (1) select 250 mesh nets or
300 mesh net of person.
4. a kind of production method of water resistant speaker veil as described in claim 1, which is characterized in that comprise the following steps：
Step 1, respectively in filter pulp and the online face dip-coating of chemical fibre is suitable is mixed by fluorine-contaninig polyacrylate and isocyanate crosslinking
Close the water resistant formed, antifouling intermixture；
Step 2 is painted with intermixture and dries after five minutes, placed in the middle with chemical fibre net, in each compound one layer of filter pulp in chemical fibre net both sides, select 3~
5 points are stitched with silk thread to be joined, and forms dust-proof, water resistant entrant sound net.
5. a kind of production method of water resistant speaker veil as claimed in claim 4, it is characterised in that：It is described it is dust-proof, water resistant is saturating
Acoustic mesh and iron net are superimposed together, and are fixed by screws on sound box.
6. a kind of production method of water resistant speaker veil as claimed in claim 4, it is characterised in that：The step 1 is in filter pulp
1~2 μm of intermixture mixed by fluorine-contaninig polyacrylate and isocyanate crosslinking of face dip-coating online with chemical fibre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711374084.5A CN108124206A (en) | 2017-12-19 | 2017-12-19 | A kind of water resistant speaker veil and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711374084.5A CN108124206A (en) | 2017-12-19 | 2017-12-19 | A kind of water resistant speaker veil and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
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| CN108124206A true CN108124206A (en) | 2018-06-05 |
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ID=62230387
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711374084.5A Pending CN108124206A (en) | 2017-12-19 | 2017-12-19 | A kind of water resistant speaker veil and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110903763A (en) * | 2019-12-09 | 2020-03-24 | 佛山市思博睿科技有限公司 | Super-hydrophobic waterproof liquid, preparation method thereof and preparation method of waterproof sound-transmitting net thereof |
| CN111205729A (en) * | 2018-11-22 | 2020-05-29 | 天津日津科技股份有限公司 | Nano-amphiphobic treatment process for audio gauze |
| CN111495718A (en) * | 2020-04-17 | 2020-08-07 | 天津日津科技股份有限公司 | Audio flexible material with hydrophobic and oleophobic functions and preparation process and application thereof |
| WO2021115318A1 (en) * | 2019-12-09 | 2021-06-17 | 佛山市思博睿科技有限公司 | Superhydrophobic water-repellent liquid, preparation method, and application thereof in waterproof sound-permeable mesh |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201118939Y (en) * | 2007-08-24 | 2008-09-17 | 中名(东莞)电子有限公司 | A waterproof earphone |
| CN201893895U (en) * | 2010-12-21 | 2011-07-06 | 东莞市漫步者科技有限公司 | Sound box with weaving surface net and assembly jig thereof |
| CN103379398A (en) * | 2012-04-14 | 2013-10-30 | 徐秋平 | Multifunctional earphone |
| CN103686497A (en) * | 2013-12-17 | 2014-03-26 | 谭志人 | Loudspeaker box face mask |
| CN104736583A (en) * | 2012-10-04 | 2015-06-24 | 巴斯夫涂料有限公司 | Fluorine-containing non-aqueous coating composition, coating process, and the use of the coating composition |
| WO2016000829A1 (en) * | 2014-07-04 | 2016-01-07 | Archroma Ip Gmbh | Composition comprising mixtures of polyacryates with fluorine-containing polyacrylates |
| US20170280236A1 (en) * | 2014-12-19 | 2017-09-28 | Amogreentech Co., Ltd. | Hydrophobic and oleophobic membrane, and waterproof sound device using same |
-
2017
- 2017-12-19 CN CN201711374084.5A patent/CN108124206A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201118939Y (en) * | 2007-08-24 | 2008-09-17 | 中名(东莞)电子有限公司 | A waterproof earphone |
| CN201893895U (en) * | 2010-12-21 | 2011-07-06 | 东莞市漫步者科技有限公司 | Sound box with weaving surface net and assembly jig thereof |
| CN103379398A (en) * | 2012-04-14 | 2013-10-30 | 徐秋平 | Multifunctional earphone |
| CN104736583A (en) * | 2012-10-04 | 2015-06-24 | 巴斯夫涂料有限公司 | Fluorine-containing non-aqueous coating composition, coating process, and the use of the coating composition |
| CN103686497A (en) * | 2013-12-17 | 2014-03-26 | 谭志人 | Loudspeaker box face mask |
| WO2016000829A1 (en) * | 2014-07-04 | 2016-01-07 | Archroma Ip Gmbh | Composition comprising mixtures of polyacryates with fluorine-containing polyacrylates |
| US20170280236A1 (en) * | 2014-12-19 | 2017-09-28 | Amogreentech Co., Ltd. | Hydrophobic and oleophobic membrane, and waterproof sound device using same |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111205729A (en) * | 2018-11-22 | 2020-05-29 | 天津日津科技股份有限公司 | Nano-amphiphobic treatment process for audio gauze |
| CN110903763A (en) * | 2019-12-09 | 2020-03-24 | 佛山市思博睿科技有限公司 | Super-hydrophobic waterproof liquid, preparation method thereof and preparation method of waterproof sound-transmitting net thereof |
| WO2021115318A1 (en) * | 2019-12-09 | 2021-06-17 | 佛山市思博睿科技有限公司 | Superhydrophobic water-repellent liquid, preparation method, and application thereof in waterproof sound-permeable mesh |
| CN111495718A (en) * | 2020-04-17 | 2020-08-07 | 天津日津科技股份有限公司 | Audio flexible material with hydrophobic and oleophobic functions and preparation process and application thereof |
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Application publication date: 20180605 |