CN102021749A - Polyester filament uniform distributor, uniform distribution method and polyester spunbonded non-woven process - Google Patents
Polyester filament uniform distributor, uniform distribution method and polyester spunbonded non-woven process Download PDFInfo
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- CN102021749A CN102021749A CN2009101750358A CN200910175035A CN102021749A CN 102021749 A CN102021749 A CN 102021749A CN 2009101750358 A CN2009101750358 A CN 2009101750358A CN 200910175035 A CN200910175035 A CN 200910175035A CN 102021749 A CN102021749 A CN 102021749A
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Abstract
The invention relates to a polyester filament uniform distributor, a uniform distribution method and a polyester spunbonded non-woven process. The invention provides equipment for providing uniformly distributed polyester filaments through spun tows, wherein the equipment comprises first and second reverse plates with an included angle from 17 to 30 degrees. The invention also provides a method for providing uniformly distributed polyester filaments through spun tows by the equipment. The invention also relates to a process for manufacturing spunbonded non-woven fabrics through the equipment.
Description
Technical field
The present invention relates to equally distributed equipment of Polyester Filament and method. the invention still further relates to and form the even technology into the net of terylene thread height, and the cloth that produces of technology thus, have welcome MD/CD brute force than (MD refers to machine direction, and CD refers to laterally).
Background technology
Make non-weaving cloth, can be achieved like this: the spunbond silk of just having extruded, by air-flow carry over score silk device, then, those fall mobile lace curtaining or guipure, have at this moment promptly formed netted.This layer net promptly formed available cloth through adhesive bonding method.
Form high-quality fibre web, an important link is exactly before spunbond silk is fallen on the lace curtaining, and every rhizoid of tow needs separated from one another, and can be evenly distributed on the mobile lace curtaining.
Also can separate tow, but the DeGrain that separates has also by static, i.e. arc discharge and make the silk ribbon electricity to reach the effect of branch silk by turbulent gas.
When non-weaving cloth becomes net, run into a problem, promptly how to make tow separate just rightly and can be distributed in equably and transmit on the guipure.If a few rhizoid adhesions are twined, or at a distance of too near, become net just inhomogeneous, the cotton rope outward appearance is arranged, this is that we do not wish the appearance effect seen.
In addition, non-weaving cloth also runs into a problem when becoming net, and that divides a device adjacent interference effect exactly.Usually dividing a silk device is that series is arranged, each minute the air flow stream sent of silk device can produce turbulent flow, adjacent like this branch silk device will produce negative interaction each other.
Yet when using static to divide the silk technology, a problem appears also.When electrostatic interaction was to a synnema, the peripheral silk of tow can obtain stronger electric charge, and the resulting electric charge of silk of tow the inside a little less than, to such an extent as to can cause the electrostatic interaction inequality tow can not fine separately expansion like this.
Air-flow divides another problem of silk to be, the tendency that monofilament is entangled with each other can impair the expansion of effective branch silk.Just because of this, require throughput low usually when becoming net, each divides the silk amount in the silk device few, but the whole silk device number that divides will increase.
The turbulent flow of use standard divides the existing problem of silk device to be, produces fixedly pattern when becoming net, or is called " footprint " (footprint).This pattern is because of closing on the air-flow dynamic effect of branch silk device, and seems obvious especially on throughput direction (MD).The non-weaving cloth that such technology is made is gone up its powerful deficiency at horizontal (CD), because the shortcoming of distribution in the horizontal.
Spunbond technology already is widely used at non-weaving cloth, and the basic step of this technology is: fusing, and metering, extruding is reeled off raw silk from cocoons, cooling, drawing-off, lapping is bonded cloth.Existing most technology is used for making spun-bonded non-woven, and the drawing of fiber device elongates a synnema or row's silk usually, and the quality of spun-bond process just, mainly is the uniformity of fiber-covered.Thereby the expansion fiber that how evenly to distribute becomes key.
United States Patent (USP) 4334340 has been described the spunbond net-forming process that launches with air drawing, wherein adopts as can be known fiber is produced static, and filament is repelled each other each other, launches tow with this.
Use thermoplastic polymer to make spun-bonded non-woven, the most common with polypropylene especially.Polypropylene is not only the most cheap raw material, and processing technology also is one of the easiest processing technology.Polypropylene has that spinning temperature is low, and spinning speed is low, and easy-to-use static divides the characteristics of silk.In this existing on the one hand a large amount of mature experience and knowledge, and less with polyester and other condensation polymer in application aspect the spun-bond process.Polyester can comprise such as: poly-benzene two is added sour ethylene glycol (PET), polytrimethylene terephthalate, materials such as polybutylene terephthalate (PBT) and PLA.Make spun-bonded non-woven fabrics with above material and have certain degree of difficulty.For reducing the heat-shrinkable of fiber, fiber speed must make the fiber all directions solid-state stable than acquiring a certain degree, and further impels the condensate crystallization.Desire to obtain high speed spinning, just must add atmosphere speed, the increase of gas speed requires tolerance to increase usually again, and the tolerance increase has hindered the separation and the expansion of tow.A little less than the sliding of polyester to many surfaces (as stainless steel), be easy to generate like this and hang silk, be unfavorable for very much the branch silk, and can produce fabric defect.Polyester also is not easy to accept electrostatic charge in addition, and opposite polypropylene is just much easier, and it can accept negative electrical charge, and its fiber is easy to mutual repulsion, and then separates and launch, and polyester is by the close middle scope of electrostatic interaction.Though it can accept positive charge, also can accept negative electrical charge, be difficult to reach charged effect as the polypropylene.
Summary of the invention
An object of the present invention is to provide a kind of equipment that equally distributed Polyester Filament can be provided from the spinning bundle, this equipment comprises:
The fibre transportation device, it is used to receive the tow that gets off from the air-flow band, and described fibre transportation device includes an inlet and an outlet:
First and second Buck Plates, first and second Buck Plates are arranged to roughly be connected to described fibre transportation device relatively and all with an angle each other, described first and second Buck Plates extend to outside the outlet of described fibre transportation device to form a silk transfer passage between described first and second Buck Plates, described silk transfer passage has the outlet of the end of contiguous described second Buck Plate, and the length of described first Buck Plate extends to outside the outlet of described silk transfer passage, and described silk transfer passage has the diminishing width of flow direction that exports to the outlet of described silk transfer passage along silk from described fibre transportation device;
Electrostatic charging device, it is arranged on outside the outlet of described silk transfer passage, and described electrostatic charging device comprises at least one charging pin, so that apply electrostatic charge equably to these silks when described silk transfer passage is gone out at silk,
Angle between wherein said first and second Buck Plates is spent in the scope of 30 degree 17.
Another object of the present invention provides and a kind ofly provides the method for equally distributed Polyester Filament by the said equipment by the spinning bundle, comprises the steps:
A) carry tow by drafting tube;
B) tow is directed in the described equipment;
C) be selected silk electrostatic charging.
Another purpose of the present invention provides a kind ofly makes the technology of spunbond non-woven fabric by the said equipment, comprises the steps:
A) carry tow by drafting tube;
B) tow is directed in the described equipment;
C) be selected silk electrostatic charging;
D) fiber is placed on the portable conveyer;
E) by heat energy or the bonding scattered fiber of mechanical energy.
Description of drawings
Fig. 1 is an equipment side view of the present invention.
Fig. 2 is an equipment rearview of the present invention.
Fig. 3 is an equipment end view of the present invention.
Fig. 4 is an equipment schematic side elevation of the present invention, and wherein the Buck Plate angle is 22 degree, is used to make that PET is non-knits antiseized silk screen.
Fig. 5 shows the distribution schematic diagram of equipment of the present invention.
Fig. 6 is the schematic diagram of the arrangement of prior art.
The specific embodiment
The following describes optimal way of the present invention, its example that relates to can mark in the accompanying drawings.
According to device of the present invention, making polyester tow and other polymer tow evenly distribute becomes possibility.This device comprises conveyer---it is used for the tow accepting to be got off by the air-flow band.The conveyer below is two Buck Plates then, and this two boards plate face is corresponding mutually.
The inventor finds, by this device of angle [alpha] (Fig. 1) of regulating between the two boards degree of being entangled with of silk is minimized.Thereby air-flow is increased and do not cause being entangled with, and then reach best performance.
The angle [alpha] of Buck Plate and surface smoothness are important for equally distributed PET filament is provided, unless and the structure of equipment be specially for polyester designs, otherwise can't obtain even silk screen.For PET, be 14 when spending in the Buck Plate angle [alpha], the separation of fiber is not enough to obtain to sprawl fully makes the non-woven fabric with excellent homogeneity.Along with the increase of the angle [alpha] of Buck Plate, fiber sprawl increase.But, when the degree of sprawling along with the Buck Plate angle increases together, the possibility that fiber adheres on the Buck Plate also increases.The possibility that the PET fiber adheres on the Buck Plate of metal is bigger.When fiber adheres on the Buck Plate, fiber build up and disabling facility in fibre stream.This causes the fiber in the equipment to be accumulated in this device so that the obstruction drafting tube causes wire side fault or interruption spinning.
As concrete demonstration the among Fig. 1, can provide the equipment 10 of equally distributed polyester and polymer filament to comprise the fibre transportation device by the spinning bundle, Figure 1 shows that fibre transportation pipe 12.Be provided to fibre transportation tube inlet 14 and be transported to fibre transportation pipe outlet 16 from extrusion device or the newly formed spinning bundle of its drafting tube (not shown) by high velocity air by fibre transportation pipe 12.As shown in figs. 1 and 3, first Buck Plate 18 and second Buck Plate 20 can be connected to fibre transportation pipe 12 by the retainer 29 that is connected to fibre transportation pipe 12 with screw 31.Retainer 29 comprises clamping plate (clevis) 28, and these clamping plate 28 engage with pin 30 in first Buck Plate 18 and second Buck Plate 20, so that first Buck Plate 18 and second Buck Plate 20 can be regulated with respect to fibre transportation pipe 12.In addition, as shown in Figure 1, first Buck Plate 18 and second Buck Plate 20 can comprise dog screw 26, and dog screw 26 can be adjusted to retainer 29 on the fibre transportation pipe 12 and contact.Dog screw 26 can be used for regulating first Buck Plate 18 and second Buck Plate 20 azimuth with respect to fibre transportation pipe 12.First Buck Plate 18 and second Buck Plate 20 can also pass through extension spring 27 further fix in position.Adopt this adjustable connected structure, can regulate, be used to provide equally distributed polyester or polymer filament the angle [alpha] between first Buck Plate 18 and second Buck Plate 20.
According to the present invention, first and second Buck Plates are configured to relatively basic each other and extend to outside the outlet of fibre transportation device, to form the silk transfer passage.The silk transfer passage has the outlet of the end of contiguous second Buck Plate, and the length of first Buck Plate extends to outside the outlet of a transfer passage.As shown in Figure 1, first Buck Plate 18 and second Buck Plate 20 extend to outside the fibre transportation pipe outlet 16, to form silk transfer passage 22.Silk transfer passage 22 has the silk transfer passage outlet 24 of the end of contiguous second Buck Plate 20.First Buck Plate 18 extends to outside the transfer passage outlet 24.
According to the present invention, the silk transfer passage has and exports to a diminishing width of flow direction of transfer passage outlet along silk from the fibre transportation device.As shown in Figure 1, silk transfer passage 22 export 16 and exports 24 flow directions to the silk transfer passage and dwindle gradually along silk from the fibre transportation device.Being used for towards silk transfer passage outlet 24 guiding high velocity airs, so that the turbulent flow that allows to cause different silks to be entangled with minimizes of silk transfer passage 22 along the diminishing width of silk flow direction.
According to preferred implementation of the present invention, provide the even equipment that distributes silk also can comprise to be arranged on electrostatic charging device outside the transfer passage outlet from the spinning bundle.Electrostatic charging device comprises at least one charging pin, so that equably apply electrostatic charge to these silks at silk when the silk transfer passage is gone out.Electrostatic charging device can be used as additional separation phase.As shown in figs. 1 and 2, electrostatic charging device can comprise corona discharge assembly 32, and this corona discharge assembly 32 preferably includes the shell that Plexiglass is made.Corona discharge assembly 32 can be connected to second Buck Plate 20 by screw 38.Corona discharge assembly 32 preferably includes potting at least one metal bar 36 therein.Two metal bars 36 of preferred use.Every metal bar 36 all comprises many charging pins 34.Preferably, charging pin 34 sets in a row along evenly turning up the soil at interval each other perpendicular to the direction of silk flow direction, and is preferably formed by the monel metal of point.Metal bar 36 can be connected to the high-tension cable 40 that is used for providing to charging pin 34 electrostatic charge.Advantageously, can provide different voltage to every row pin 34 that charges.As shown in Figure 1, the zone that export outside 24 at the silk transfer passage, is surrounded by first Buck Plate 18 and second Buck Plate 20 is electrostatic charging zone 42.
According to the present invention, also provide a kind of method that equally distributed Polyester Filament is provided by the spinning bundle by the said equipment.More particularly, this method comprises the steps: a) to carry tow by drafting tube; B) tow is directed in the described equipment; C) be selected silk electrostatic charging.
According to the present invention, also provide a kind of technology of making spunbond non-woven fabric by the said equipment.More particularly, this technology comprises the steps: a) to carry tow by drafting tube; B) tow is directed in the described equipment; C) be selected silk electrostatic charging; D) fiber is placed on the portable conveyer (as lace curtaining or guipure); E) by heat energy or the mechanical energy scattered fiber that bonds.
Providing the method for equally distributed Polyester Filament by the said equipment by the spinning bundle and making in the technology of spunbond non-woven fabric, the layout of equipment is very important to equally distributed Polyester Filament being provided and making the spunbond silk screen with excellent homogeneity.The fibrous woven speed that is used for the increase of PET fiber causes requiring higher air velocity and bigger volume of air than polypropylene.Along with the angle between the Buck Plate increases from 14 degree, more air is overflowed from the side of equipment, if be not properly spaced out between the equipment, this can cause the more interference between each equipment.Show the schematic diagram that adopts arrangement of the present invention and eight equipment of prior art arrangement among Fig. 5 and Fig. 6 respectively.Among Fig. 6 with eight equipment along perpendicular to the direction of machine direction, be crisscross two row A1 ', the A2 ' that are arranged to, four of every rows, every equipment all is provided with the mode at the crisscross 30-45 of one-tenth degree angle, the distance of the center to center of two neighbouring devices among each row is 150mm, and the distance of the center to center of different rows' neighbouring device is 75mm.Have the spunbond goods of PET that uniform fiber distributes in order to make, the interval of equipment must increase significantly.More particularly, for the PET silk, should separate 200mm at least in the side of neighbouring device.In the example that present device shown in Figure 5 is arranged, eight equipment are along crisscross four row A1, A2, A3, the A4 of being arranged to, two of every rows, and the equipment center among each row is 300mm to the distance at center.This layout of equipment can be used for making polypropylene spun-bonded goods certainly among the present invention.
In addition, for the PET silk, the gap in the exit between the Buck Plate of equipment is very important.For polypropylene, this gap still can obtain fully sprawling of fiber at 4-10mm.But for the PET fiber that obtains fully to sprawl, this gap must be preferably 3mm less than 4mm.
According to the embodiment of the present invention, in manufacture process, polyester fiber is of a size of every rhizoid 1-6 Denier (denier).The basic weight of spunbond non-woven fabric is 12 to 400gsm, and its machine direction and crisscross draw ratio are 0.5-2: 1.The outlet of first and second Buck Plates is apart from silk gathering system 250mm to 400mm.
Although describe the present invention with reference to preferred implementation, should be appreciated that under the condition that does not break away from aim of the present invention and scope, can carry out various variants and modifications to the present invention.This modification is considered to fall within the scope of the present invention and appended claims.
Claims (21)
1. equipment that equally distributed Polyester Filament can be provided from the spinning bundle, this equipment comprises:
The fibre transportation device, it is used to receive the tow that gets off from the air-flow band, and described fibre transportation device includes an inlet and an outlet:
First and second Buck Plates, first and second Buck Plates are arranged to roughly be connected to described fibre transportation device relatively and all with an angle each other, described first and second Buck Plates extend to outside the outlet of described fibre transportation device to form a silk transfer passage between described first and second Buck Plates, described silk transfer passage has the outlet of the end of contiguous described second Buck Plate, and the length of described first Buck Plate extends to outside the outlet of described silk transfer passage, and described silk transfer passage has the diminishing width of flow direction that exports to the outlet of described silk transfer passage along silk from described fibre transportation device;
Electrostatic charging device, it is arranged on outside the outlet of described silk transfer passage, and described electrostatic charging device comprises at least one charging pin, so that apply electrostatic charge equably to these silks when described silk transfer passage is gone out at silk,
Angle between wherein said first and second Buck Plates is spent in the scope of 30 degree 17.
2. equipment as claimed in claim 1, wherein, the angle between described first and second Buck Plates is spent in the scope of 25 degree 20.
3. equipment as claimed in claim 1, wherein, the RMS fineness of described first and second Buck Plates is less than 50rms.
4. equipment as claimed in claim 1, wherein, the outlet gap of described first and second Buck Plates is less than 4mm.
5. equipment as claimed in claim 1, wherein, described polyester fiber is of a size of every rhizoid 1-6 Denier.
6. equipment as claimed in claim 1, wherein, described polyester is polyethylene terephthalate, polytrimethylene terephthalate, polybutylene terephthalate (PBT) or PLA.
7. one kind provides the method for equally distributed Polyester Filament by the described equipment of claim 1 by the spinning bundle, comprises the steps:
A) carry tow by drafting tube;
B) tow is directed in the described equipment;
C) be selected silk electrostatic charging.
8. method as claimed in claim 7 also comprises apparatus arrangement is become in the side of neighbouring device at interval 200mm at least.
9. method as claimed in claim 7, wherein, the RMS fineness of described first and second Buck Plates is less than 50rms.
10. method as claimed in claim 7, wherein, the outlet gap of described first and second Buck Plates is less than 4mm.
11. method as claimed in claim 7, wherein, described polyester fiber is of a size of every rhizoid 1-6 Denier.
12. method as claimed in claim 7, wherein, described polyester is polyethylene terephthalate, polytrimethylene terephthalate, polybutylene terephthalate (PBT) or PLA.
13. the technology by the spunbond non-woven fabric of the described device fabrication of claim 1 comprises the steps:
A) carry tow by drafting tube;
B) tow is directed in the described equipment;
C) be selected silk electrostatic charging;
D) fiber is placed on the portable conveyer;
E) by heat energy or the bonding scattered fiber of mechanical energy.
14. technology as claimed in claim 13 also comprises apparatus arrangement is become in the side of neighbouring device at interval 200mm at least.
15. technology as claimed in claim 13, wherein, the RMS fineness of described first and second Buck Plates is less than 50rms.
16. technology as claimed in claim 13, wherein, the outlet gap of described first and second Buck Plates is less than 4mm.
17. technology as claimed in claim 13, wherein, described polyester fiber is of a size of every rhizoid 1-6 Denier.
18. technology as claimed in claim 13, wherein, described polyester is polyethylene terephthalate, polytrimethylene terephthalate, polybutylene terephthalate (PBT) or PLA.
19. technology as claimed in claim 13, wherein, the basic weight of described spunbond non-woven fabric 12 to 400gsm.
20. technology as claimed in claim 13, wherein, the outlet of described first and second Buck Plates is apart from becoming guipure surface 250mm to 400mm.
21. technology as claimed in claim 13, wherein, described machine direction and horizontal draw ratio are 0.5-2: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101750358A CN102021749A (en) | 2009-09-23 | 2009-09-23 | Polyester filament uniform distributor, uniform distribution method and polyester spunbonded non-woven process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101750358A CN102021749A (en) | 2009-09-23 | 2009-09-23 | Polyester filament uniform distributor, uniform distribution method and polyester spunbonded non-woven process |
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|---|---|
| CN102021749A true CN102021749A (en) | 2011-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009101750358A Pending CN102021749A (en) | 2009-09-23 | 2009-09-23 | Polyester filament uniform distributor, uniform distribution method and polyester spunbonded non-woven process |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720003A (en) * | 2012-05-15 | 2012-10-10 | 山东泰鹏无纺有限公司 | Method for improving evenness of terylene spunbonded nonwoven fabric and electrostatic filament dividing device |
| CN105803551A (en) * | 2014-12-31 | 2016-07-27 | 大连华阳新材料科技股份有限公司 | Static gun silk separating device for tubular drafting |
| CN108611766A (en) * | 2018-06-04 | 2018-10-02 | 大连华阳新材料科技股份有限公司 | A kind of spunbond tablet non-woven cloth slit drawing-off production method |
| CN114000263A (en) * | 2021-11-22 | 2022-02-01 | 上海楚桦仪器科技有限公司 | Full-automatic production method of anti-floc-falling non-woven fabric and clinical full-protection medical surgical drape |
-
2009
- 2009-09-23 CN CN2009101750358A patent/CN102021749A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720003A (en) * | 2012-05-15 | 2012-10-10 | 山东泰鹏无纺有限公司 | Method for improving evenness of terylene spunbonded nonwoven fabric and electrostatic filament dividing device |
| CN105803551A (en) * | 2014-12-31 | 2016-07-27 | 大连华阳新材料科技股份有限公司 | Static gun silk separating device for tubular drafting |
| CN108611766A (en) * | 2018-06-04 | 2018-10-02 | 大连华阳新材料科技股份有限公司 | A kind of spunbond tablet non-woven cloth slit drawing-off production method |
| CN114000263A (en) * | 2021-11-22 | 2022-02-01 | 上海楚桦仪器科技有限公司 | Full-automatic production method of anti-floc-falling non-woven fabric and clinical full-protection medical surgical drape |
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Application publication date: 20110420 |