CN103882540A - Electrostatic tow separator - Google Patents
Electrostatic tow separator Download PDFInfo
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- CN103882540A CN103882540A CN201410100215.0A CN201410100215A CN103882540A CN 103882540 A CN103882540 A CN 103882540A CN 201410100215 A CN201410100215 A CN 201410100215A CN 103882540 A CN103882540 A CN 103882540A
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- high voltage
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- spray point
- voltage insulating
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Abstract
The invention discloses a method for improving evenness of thin polyester spunbond nonwoven fabric and an electrostatic tow separator device for carrying out the method. The method and device are applied to production equipment of slit type spunbond nonwoven fabric. An electrostatic tow separator is installed at an upper inlet or a lower outlet of a slit drafting device, a uniform high-voltage electric field is formed between a spray point on a discharge faller and a conductive metal target roller through high-voltage static electricity generated by a direct-current high-voltage electrostatic generator, the spray point on the discharge faller and the conductive metal target roller are on the same horizontal line, when tows pass through the uniform high-voltage electric field after being fused and cooled, a certain quantity of electric charges are exerted on the tows, due to the fact that the tows are with the same kind of the charges and reject mutually, repulsive force is low at large intervals, and repulsive force is high at small intervals; in addition, the device is matched with a net-laying curtain made of conductive carbon fibers, unnecessary charges on the tows can be transferred in time when the tows form a net, and the aim of uniformly separating the tows is achieved.
Description
Technical field
The present invention relates to a kind of slim spunbond polyester technology of nonwoven.
Background technology
Spun-bonded non-woven is also nonwoven fabric, and its raw material is polyester, mainly by polypropylene spunbond non-weaving cloth and terylene spun-bonded non-weaving cloth.It is to utilize polyester melt spinning principle into the net, and the polyester after melt extruded is made to non-weaving cloth after the operations such as spinning, cooling, drawing-off, one-tenth net, is a kind of technology that collects the multidisciplinary intersection such as oil, chemical industry and chemical fiber, and development in recent years is exceedingly fast.Be widely used in household, the industry such as medical, agricultural, geotechnological.
It is per minute that Spunbonded Nonwovens reaches thousands of rice very soon through its speed of air drawing, spinnerets only has several meters apart from the height that becomes lace curtaining simultaneously, add tow intensive, be easy to produce doubling, tow problem pockety, have a strong impact on the performance of product, therefore, product is inhomogeneous is a very important problem for Spunbonded Nonwovens.Thick and heavy type Spunbonded Nonwovens can solve by multilayer lapping, but for the slim bonded non-woven of putting that has specific use, such as, for the dull and stereotyped nonwoven fabric of reverse osmosis membrane base cloth, very high to its uniformity requirement, can't solve completely existing issue by traditional mechanical sub-wire method, air-flow sub-wire method.Therefore, for spun-bonded non-woven manufacturing enterprise, improve the slim spunbond product uniformity, developing new market, capturing frontier has huge effect.
Summary of the invention
To be solved by this invention is that existing slim spunbonded nonwoven product easily produces doubling, tow problem pockety.
In order to address the above problem, the invention provides a kind of static sub-wire device, it is characterized in that, comprise the sub-wire main part and the target roller that lay respectively at tow both sides, described sub-wire main part comprises the electric discharge needle plate that is embedded with many spray points, the side that electric discharge needle plate is embedded with spray point is provided with anti-high voltage insulating materials module, and spray point exposes from anti-high voltage insulating materials module; The side that electric discharge needle plate outside cover has anti-high voltage insulating materials housing, anti-high voltage insulating materials module to be provided with spray point is exposed from anti-high voltage insulating materials housing.
Preferably, described anti-high voltage insulating materials housing, anti-high voltage insulating materials module employing polytetrafluoroethylene (PTFE) are that material is made.
Preferably, the needle point end of described spray point and the outer surface of anti-high voltage insulating materials module are in the same plane.
Preferably, described electric discharge needle plate is connected with high direct voltage electrostatic generator.
Preferably, the distribution mode of described spray point is: be arranged as at least one row in electric discharge needle plate direction equal intervals.
More preferably, described spray point is arranged as a row in electric discharge needle plate direction, and the spacing distance between every two spray points is 1cm.
More preferably, described spray point is arranged as at least two rows in electric discharge needle plate direction, and in even rows, every spray point is positioned at the above centre of immediate adjacent two spray points of odd number row.
Preferably, described target roller and sub-wire main part be arranged in parallel, and the upper spray point of sub-wire main part points to target roller and the longitudinal section perpendicular to target roller.
More preferably, the center line of described target roller longitudinal section and the needle point of spray point are positioned in same level.
Preferably, the length of the electric discharge needle plate of described sub-wire main part, anti-high voltage insulating materials module and anti-high voltage insulating materials housing is consistent, and corresponding with the length of the slit of the production equipment of target roller and slit spun-bonded non-woven.
The present invention is placed on to extension apparatus porch or the exit of slit spunbond polyester non woven fabric production apparatus, the present invention by the even high voltage electric field that produces between a needle plate that is embedded with spray point and a ground connection roller to the additional a certain amount of like charges of the tow by between its electric field, thereby make to be separated from each other between tow owing to all producing repulsion with like charges on tow.The repulsive force of generation of static electricity, large at close local repulsive force, little at sparse local repulsive force, play the effect that reduces doubling, connects silk, thereby improve the uniformity of product.
Compared with prior art, the present invention has the following advantages:
1, due to the external adjustable high-voltage electrostatic generator of electric discharge needle plate, voltage is up to volts up to ten thousand, and therefore, electric discharge needle plate is outer coated by anti-high voltage insulating materials housing, as polytetrafluoroethylene (PTFE) can resist 100,000 volts of high pressure; Can optionally make positive charge of the same race or negative electrical charge on tow band according to needs of production on the other hand.
2, all needle points of spray point should maintain an equal level with insulating coating material is peripheral in same level and all needle points, and while avoiding actual production, tow and needle point touch generation hanging wire phenomenon and affect normal production;
3, anti-high voltage insulating materials module reduces to discharge interaction between needle point and affects the uniformity of electric field between electric discharge needle plate and ground connection target;
4, spray point is made many rows (>=2), and row's pin position of even rows is just corresponding to the center of adjacent two pins in odd number of arrayed, uses same spray point, has ensured that the electric field producing between electric discharge needle plate and ground connection target is uniform:
The uniformity of the electric field 5, producing between needle plate and target roller in order to ensure to discharge, spray point sheetmetal part and between ground or production equipment does not come in contact;
6, because target roller adopts metallic roll, its conduction, ground connection and what slowly run, target roller does not contact with extension apparatus, can reach the better uniformity;
7, tow is positioned as close to or just contacts with target roller and tow do not produced to the oppressive force of contact, can make like this equivalent electric charge on tow band move away in time as much as possible again electric charge unnecessary on tow simultaneously;
8, according to different polyester raw materials and different product requirement, in actual production, adjust according to actual needs the distance between discharge voltage, electric discharge needle plate and target roller, make the uniformity of product reach desirable requirement.
Brief description of the drawings
Fig. 1 is the structural representation of static sub-wire device provided by the invention;
Fig. 2 is the schematic diagram of the electric discharge needle plate in embodiment 1;
Fig. 3 is the schematic diagram of anti-high voltage insulating materials module in embodiment 1;
Fig. 4 is the schematic diagram discharging in embodiment 1 after needle plate, anti-high voltage insulating materials module, spray point three combination;
Fig. 5 is the partial schematic diagram of anti-high voltage insulating materials housing;
Fig. 6 is the schematic diagram of the electric discharge needle plate in embodiment 2;
Fig. 7 is the schematic diagram of the anti-high voltage insulating materials module in embodiment 2;
Fig. 8 is the schematic diagram discharging in embodiment 2 after needle plate, anti-high voltage insulating materials module, spray point three combination.
Detailed description of the invention
For the present invention is become apparent, hereby with preferred embodiment, and coordinate accompanying drawing to be described in detail below.
Embodiment 1
As Figure 1-5, the structural representation of the static sub-wire device providing for the present embodiment 1, comprise the sub-wire main part and the target roller 1 that lay respectively at tow 6 both sides, target roller 1 be arranged in parallel with sub-wire main part, and the upper spray point 2 of sub-wire main part points to target roller 1 and the longitudinal section perpendicular to target roller 1.Described sub-wire main part comprises the electric discharge needle plate 3 that is embedded with many spray points 2, the side that electric discharge needle plate 3 is embedded with spray point 2 is provided with anti-high voltage insulating materials module 7, spray point 2 exposes from anti-high voltage insulating materials module 7, and the needle point end of spray point 2 and the outer surface of anti-high voltage insulating materials module 7 are in the same plane.The distribution mode of spray point 2 is: be arranged as a row in electric discharge needle plate 3 direction equal intervals, the spacing distance between every two spray points 2 is 1cm.The center line of target roller 1 longitudinal section and the needle point of spray point 2 are positioned in same level.Electric discharge needle plate 3 outside covers have anti-high voltage insulating materials housing 4, anti-high voltage insulating materials housing 4 is provided with a groove (as shown in Figure 5) matching with electric discharge needle plate 3 and anti-high voltage insulating materials module 7 shapes, electric discharge needle plate 3 and anti-high voltage insulating materials module 7 are arranged in this groove, and anti-high voltage insulating materials module 7 is provided with a side of spray point 2 and exposes from anti-high voltage insulating materials housing 4.It is that material is made that anti-high voltage insulating materials housing 4, anti-high voltage insulating materials module 7 adopt polytetrafluoroethylene (PTFE).The length of the electric discharge needle plate 3 of sub-wire main part, anti-high voltage insulating materials module 7 and anti-high voltage insulating materials housing 4 is consistent, and corresponding with the length of the slit 5 of the production equipment of target roller 1 and slit spun-bonded non-woven.
When use, the needle plate 3 that will discharge is connected with high direct voltage electrostatic generator, and target roller 1 is connected with a low-power motor, when work, slowly runs; The target roller 1 of the static sub-wire device that the present embodiment is provided and sub-wire main part are placed in respectively the slit 5 entrance 90mm places, top (also can be positioned over exit, below) of slit spunbond polyester production equipment, the even high voltage electric field producing between the two by the electric discharge needle plate 3 of settling and the target roller 1 that can slowly run is given by the tow between this device with positive charge of the same race or negative electrical charge of the same race, 6, tow because of electrostatic force occur to repel and interval even, doubling between tow 6, haircuts phenomenon are reduced, thereby improve the product uniformity.
In the time installing static sub-wire device and normally produce, the lapping curtain that should add Destaticizing device in the later process of lapping or use conductive material to make, eliminates residual electrostatic charge on tow and affects product quality.
Said method is applicable to conventional meltbility spunbonded nonwoven product, as polypropylene PP, polyethylene terephthalate PET etc.
The present embodiment is that from the difference of embodiment 1 arrangement mode of spray point 2 is different, and as shown in Fig. 5-8, electric discharge needle plate 3 has two discharge acusectors 2, and even rows spray point 2 is arranged in the centre of immediate two of odd number discharge acusector 2; In anti-high voltage insulating materials module 7, the arrangement mode of pin hole matches with the arrangement mode of spray point 2, and the position of pin hole is corresponding with the position of spray point 2 on electric discharge needle plate 3; After electric discharge needle plate 3, anti-high voltage insulating materials module 7, spray point 3 threes' combinations as shown in Figure 8.
Claims (10)
1. a static sub-wire device, it is characterized in that, comprise the sub-wire main part and the target roller (1) that lay respectively at tow (6) both sides, described sub-wire main part comprises the electric discharge needle plate (3) that is embedded with many spray points (2), the side that electric discharge needle plate (3) is embedded with spray point (2) is provided with anti-high voltage insulating materials module (7), and spray point (2) exposes from anti-high voltage insulating materials module (7); The side that electric discharge needle plate (3) outside cover has anti-high voltage insulating materials housing (4), anti-high voltage insulating materials module (7) to be provided with spray point (2) is exposed from anti-high voltage insulating materials housing (4).
2. static sub-wire device as claimed in claim 1, is characterized in that, it is that material is made that described anti-high voltage insulating materials housing (4), anti-high voltage insulating materials module (7) adopt polytetrafluoroethylene (PTFE).
3. static sub-wire device as claimed in claim 1, is characterized in that, the outer surface of the needle point end of described spray point (2) and anti-high voltage insulating materials module (7) is in the same plane.
4. static sub-wire device as claimed in claim 1, is characterized in that, described electric discharge needle plate (3) is connected with high direct voltage electrostatic generator.
5. static sub-wire device as claimed in claim 1, is characterized in that, the distribution mode of described spray point (2) is: be arranged as at least one row in electric discharge needle plate (3) direction equal intervals.
6. static sub-wire device as claimed in claim 5, is characterized in that, described spray point (2) is arranged as a row in electric discharge needle plate (3) direction, and the spacing distance between every two spray points (2) is 1cm.
7. static sub-wire device as claimed in claim 5, it is characterized in that, described spray point (2) is arranged as at least two rows in electric discharge needle plate (3) direction, and in even rows, every spray point (2) is positioned at the above centre of immediate adjacent two spray points (2) of odd number row.
8. static sub-wire device as claimed in claim 1, it is characterized in that, described target roller (1) be arranged in parallel with sub-wire main part, and the upper spray point (2) of sub-wire main part points to target roller (1) and the longitudinal section perpendicular to target roller (1).
9. static sub-wire device as claimed in claim 8, is characterized in that, the center line of described target roller (1) longitudinal section and the needle point of spray point (2) are positioned in same level.
10. static sub-wire device as claimed in claim 1, it is characterized in that, the length of electric discharge needle plate (3), anti-high voltage insulating materials module (7) and the anti-high voltage insulating materials housing (4) of described sub-wire main part is consistent, and corresponding with the length of the slit (5) of the production equipment of target roller (1) and slit spun-bonded non-woven.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410100215.0A CN103882540A (en) | 2014-03-18 | 2014-03-18 | Electrostatic tow separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410100215.0A CN103882540A (en) | 2014-03-18 | 2014-03-18 | Electrostatic tow separator |
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| CN103882540A true CN103882540A (en) | 2014-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410100215.0A Pending CN103882540A (en) | 2014-03-18 | 2014-03-18 | Electrostatic tow separator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105803675A (en) * | 2014-12-31 | 2016-07-27 | 大连华阳新材料科技股份有限公司 | Double-component tubular electrostatic silk distributing adjustment device for drafting |
| CN107723817A (en) * | 2017-11-28 | 2018-02-23 | 江苏神鹤科技发展有限公司 | A kind of high-strength high-modulus polyethylene fiber electrostatic opens up silk device |
| CN110258025A (en) * | 2019-06-11 | 2019-09-20 | 大连华阳新材料科技股份有限公司 | A kind of clipping panel assembly that fiber networking uniformity can be improved |
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| US3967118A (en) * | 1975-04-29 | 1976-06-29 | Monsanto Company | Method and apparatus for charging a bundle of filaments |
| US4421584A (en) * | 1981-04-13 | 1983-12-20 | Mitsubishi Rayon Co., Ltd. | Process for the production of sheet-like material comprising split fibers and apparatus therefor |
| JPS5988961A (en) * | 1982-11-05 | 1984-05-23 | 旭化成株式会社 | Production of nonwoven fabric |
| CN2703014Y (en) * | 2004-03-25 | 2005-06-01 | 鞍山市博鑫科技有限公司 | Intelligent follow-up electrostatic filaments dividing machine |
| CN102187024A (en) * | 2008-09-16 | 2011-09-14 | 安德里兹波杰特有限公司 | Spunbond tower with an electrostatic device |
| CN102505168A (en) * | 2011-11-03 | 2012-06-20 | 曾华良 | Yarn separating assembly |
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2014
- 2014-03-18 CN CN201410100215.0A patent/CN103882540A/en active Pending
Patent Citations (7)
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| US3967118A (en) * | 1975-04-29 | 1976-06-29 | Monsanto Company | Method and apparatus for charging a bundle of filaments |
| US4421584A (en) * | 1981-04-13 | 1983-12-20 | Mitsubishi Rayon Co., Ltd. | Process for the production of sheet-like material comprising split fibers and apparatus therefor |
| JPS5988961A (en) * | 1982-11-05 | 1984-05-23 | 旭化成株式会社 | Production of nonwoven fabric |
| CN2703014Y (en) * | 2004-03-25 | 2005-06-01 | 鞍山市博鑫科技有限公司 | Intelligent follow-up electrostatic filaments dividing machine |
| CN102187024A (en) * | 2008-09-16 | 2011-09-14 | 安德里兹波杰特有限公司 | Spunbond tower with an electrostatic device |
| CN102505168A (en) * | 2011-11-03 | 2012-06-20 | 曾华良 | Yarn separating assembly |
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| 刘力等: "静电分丝器对薄型PET纺粘产品均匀度的影响", 《山东纺织科技》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105803675A (en) * | 2014-12-31 | 2016-07-27 | 大连华阳新材料科技股份有限公司 | Double-component tubular electrostatic silk distributing adjustment device for drafting |
| CN107723817A (en) * | 2017-11-28 | 2018-02-23 | 江苏神鹤科技发展有限公司 | A kind of high-strength high-modulus polyethylene fiber electrostatic opens up silk device |
| CN110258025A (en) * | 2019-06-11 | 2019-09-20 | 大连华阳新材料科技股份有限公司 | A kind of clipping panel assembly that fiber networking uniformity can be improved |
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Application publication date: 20140625 |