CN208791821U - Melt-blowing nozzles and fiber preparation facilities - Google Patents
Melt-blowing nozzles and fiber preparation facilities Download PDFInfo
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- CN208791821U CN208791821U CN201821253927.6U CN201821253927U CN208791821U CN 208791821 U CN208791821 U CN 208791821U CN 201821253927 U CN201821253927 U CN 201821253927U CN 208791821 U CN208791821 U CN 208791821U
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- 238000007664 blowing Methods 0.000 title claims abstract description 57
- 239000000835 fiber Substances 0.000 title claims abstract description 49
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 238000007378 ring spinning Methods 0.000 claims abstract description 55
- 238000005507 spraying Methods 0.000 claims abstract description 13
- 239000007921 spray Substances 0.000 claims description 14
- 230000000694 effects Effects 0.000 abstract description 10
- 229920000642 polymer Polymers 0.000 description 13
- 239000002994 raw material Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 239000004743 Polypropylene Substances 0.000 description 5
- 230000009977 dual effect Effects 0.000 description 5
- -1 polypropylene Polymers 0.000 description 5
- 229920001155 polypropylene Polymers 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000004744 fabric Substances 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002121 nanofiber Substances 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004750 melt-blown nonwoven Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Landscapes
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Nonwoven Fabrics (AREA)
Abstract
The utility model discloses a kind of melt-blowing nozzles and fiber preparation facilities, melt-blowing nozzles include: the first airflow channel for spraying the first air-flow, it is coated at first airflow channel and for spraying the ring spinning hole of strand, the outside positioned at the ring spinning hole and the second airflow channel for spraying the second air-flow；Wherein, first air-flow and second air-flow are used to stretch the strand.In above-mentioned melt-blowing nozzles, first air-flow forms gas flowfield inside strand, second air-flow is in strand external action, that is the first air-flow and the second air-flow respectively jointly stretch strand inside and outside strand, compared with the prior art stretches strand only with the air-flow outside strand, drawing effect is effectively increased, to reduce the diameter of meltblown fibers；Above-mentioned melt-blowing nozzles, it is only necessary to which the first airflow channel is set on the basis of original melt-blowing nozzles, it is not necessary to make other changes, effectively reduce the difficulty of processing of melt-blowing nozzles, saved cost.
Description
Technical field
The utility model relates to technical field of fiber preparation, prepare more specifically to a kind of melt-blowing nozzles and fiber
Device.
Background technique
Non-woven cloth refers to the sheet-like article being directly prepared into without common spinning and weaving process by fiber, is commonly called as nonwoven
Cloth.Nonwoven advantage is that process flow is short, speed of production is high, product purpose is wide.Meltblown is a kind of mainly for the preparation of super
The method of fine fibre non-woven cloth.Polymer melt is drawn into superfine fibre using high-speed and high-temperature airflow by meltblown.Ultra-fine fibre
The diameter of dimension is between 1 μm to 5 μm.Melt-blow nonwoven has tree root shape channel since fiber is ultra-fine, hole is more, aperture is small
System, filter efficiency are widely used in medicine, metallurgy, electronics, chemical industry, food, machinery, nuclear industry, automobile etc. up to 99.9% or more
Field also acts as the advanced filters of the depollution of environment and biologic cleanliness.
The important trend of melt-blown non-woven technology is that thinner fibre is prepared under the premise of not increasing energy consumption substantially
Dimension, even nanofiber.As fruit fiber can be carefully to nanoscale, then the strainability and absorption property of its product will mention significantly
Height, the application prospect in the fields such as environmental protection, medicine, national defence, electronics will more extensively.
Further attenuating for fiber is mainly realized by improving raw material, technique and equipment.It is mainly logical in terms of raw material
Cross melt flow rate (Melt Flow Rate, the abbreviation MFR) Lai Shixian for improving polymer.But melt flow rate
The price of height, raw material is more expensive, then production cost is higher.In process aspect, mainly by reducing polymer flow rate and improving gas
Body initial velocity is realized.But polymer flow rate is too low, the yield of non-woven cloth is also too low；And gas initial velocity is excessively high,
Then energy consumption can sharply increase, and production cost is higher.
In order to further fiber be made to attenuate, start with mostly from equipment, most of improve all is unfolded around melt-blowing nozzles.
The melt-blowing nozzles specifically include that the spinneret orifice that strand is formed for spraying polymer melt, on the outside of spinneret orifice and are used for
The airflow channel of jet-stream wind；Wherein, the air-flow that airflow channel sprays is for stretching strand, to obtain meltblown fibers.For example, specially
Sharp US3825380 prepares thinner meltblown fibers using pointed nozzle, and pointed nozzle substantially reduces gas flowfield in spinneret orifice
The recirculating zone of near exit increases air-flow to the stretching action of polymer melt, so that thinner fiber be made.The tip
The shortcomings that nozzle is that the requirement on machining accuracy of pointed nozzle is very high, and the difficulty of processing of spinneret orifice is big.Reduce orifice diameter and increasing
Spinneret orifice draw ratio is added also to can reduce fibre diameter, but the difficulty of processing that will lead to spinneret orifice increases, too small spinneret orifice
Diameter also makes the adaptability to raw material of melt blown technology be deteriorated.
In conclusion how to provide a kind of melt-blowing nozzles, to reduce the diameter of meltblown fibers, while melt-blowing nozzles are reduced
Difficulty of processing, save the cost are a problem to be solved by those skilled in the art.
Utility model content
The purpose of the utility model is to provide a kind of melt-blowing nozzles, to reduce the diameter of meltblown fibers, while reducing melt-blown
The difficulty of processing of nozzle, save the cost.The another object of the utility model is to provide a kind of fiber with above-mentioned melt-blowing nozzles
Preparation facilities.
To achieve the goals above, the utility model provides the following technical solutions:
A kind of melt-blowing nozzles, comprising: for spraying the first airflow channel of the first air-flow, it is logical to be coated at first air-flow
Road and for spraying the ring spinning hole of strand, positioned at the ring spinning hole outside and for spraying the second of the second air-flow
Airflow channel；Wherein, first air-flow and second air-flow are used to stretch the strand.
Preferably, first air-flow and second air-flow have pressure difference, and the pressure difference is greater than the strand
Surface tension.
Preferably, the pressure of first air-flow is greater than the pressure of second air-flow.
Preferably, the pressure of second air-flow is greater than the pressure of first air-flow.
Preferably, first airflow channel and the ring spinning hole coaxial line.
Preferably, second airflow channel is located at the two sides of the ring spinning hole, is located at the ring spinning hole two
Second airflow channel of side is arranged about the axisymmetrical of the ring spinning hole.
Preferably, second airflow channel is obliquely installed relative to the ring spinning hole, and is located at the annular spray
The angle value range of the axis of second airflow channel of two of wire hole two sides is 45 ° -75 °.
Preferably, the circular in cross-section of first airflow channel, the cross section of second airflow channel are in rectangle,
The ring spinning hole is in circular ring shape；
Wherein, the diameter value range of first airflow channel is 0.1mm-0.8mm；Interior the half of the ring spinning hole
The difference value range of diameter and outer radius is 0.2mm-0.53mm；The exit width value range of second airflow channel is
0.5mm-0.7mm。
Preferably, first airflow channel is by the first gas source supply gas, and second airflow channel is by the second gas source
Supply gas, first gas source and second gas source are mutually indepedent.
Based on the melt-blowing nozzles of above-mentioned offer, the utility model additionally provides a kind of fiber preparation facilities, fiber preparation
Device includes melt-blowing nozzles, which is melt-blowing nozzles described in any of the above embodiments.
In melt-blowing nozzles provided by the utility model, the first airflow channel sprays the first air-flow, and the second airflow channel sprays
Second air-flow, polymer melt form strand after ring spinning hole extrusion, which immediately encounters the first air-flow and the second gas
Stream.Since ring spinning hole is ring structure, and ring spinning hole is coated at the first airflow channel, therefore strand is just wrapped in
Around one air-flow, the strand of hollow structure is formed, the first air-flow then forms gas flowfield inside strand.Strand simultaneously also by
To the effect of the second air-flow, i.e. the first air-flow and the second air-flow respectively jointly stretch strand inside and outside strand, and existing
There is technology to carry out stretching to strand only with the air-flow outside strand to compare, drawing effect is effectively increased, to reduce molten
Spray the diameter of fiber；Above-mentioned melt-blowing nozzles, it is only necessary to which the first airflow channel is set on the basis of original melt-blowing nozzles, no
Other changes must be made, the difficulty of processing of melt-blowing nozzles is effectively reduced, has saved cost.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to the attached drawing of offer.
Fig. 1 is the structural schematic diagram of melt-blowing nozzles provided by the embodiment of the utility model.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
As shown in Figure 1, melt-blowing nozzles provided by the embodiment of the utility model include: the first gas for spraying the first air-flow
Circulation road 3 is coated at the first airflow channel 3 and the ring spinning hole 1 for spraying strand, positioned at the outside of ring spinning hole 1
And the second airflow channel 2 for spraying the second air-flow；Wherein, the first air-flow and the second air-flow are used to stretch strand.
It is understood that the axial direction of the first airflow channel 3, the symmetrical axis direction of the second airflow channel 2 and annular spinneret
Hole 1 it is approximately axially consistent, with guarantee the first air-flow and the second air-flow main movement direction and ring spinning hole 1 axial one
It causes, to guarantee that the first air-flow and the second air-flow stretch strand.
It should be noted that the symmetry axis of above-mentioned second airflow channel 2, refers to pair of single second airflow channel 2 itself
Claim axis.The symmetrical axis direction is identical as the length direction of the second airflow channel 2.
In melt-blowing nozzles provided by the embodiment of the utility model, the first airflow channel 3 sprays the first air-flow, and the second air-flow is logical
Road 2 sprays the second air-flow, and polymer melt forms strand after the extrusion of ring spinning hole 1, which immediately encounters the first air-flow
With the second air-flow.Since ring spinning hole 1 is ring structure, and ring spinning hole 1 is coated at the first airflow channel 3, therefore silk
Item is just wrapped in around the first air-flow, forms the strand of hollow structure, and the first air-flow then forms gas flowfield inside strand.
Meanwhile effect of the strand also by the second air-flow, i.e. the first air-flow and the second air-flow are respectively inside and outside strand jointly to strand
It is stretched, compared with the prior art stretches strand only with the air-flow outside strand, effectively increases drawing effect,
To reduce the diameter of meltblown fibers；Meanwhile above-mentioned melt-blowing nozzles need to only be arranged on the basis of original melt-blowing nozzles
One airflow channel 3 effectively reduces the difficulty of processing of melt-blowing nozzles, has saved cost without making other changes.
In order to further refine strand, nanofiber is obtained, above-mentioned first air-flow and the second air-flow have pressure difference, and press
Power difference is greater than the surface tension of strand.
Specifically, when the first air-flow and the second air-flow jointly stretch strand, when the first air-flow and the second air-flow
Pressure difference be more than strand surface tension when, strand will burst open come, formed nanofiber.
For the specific value of above-mentioned pressure difference, set according to the specific material of strand, the utility model embodiment pair
This is without limitation.
Further, the sum of air demand of above-mentioned first airflow channel and the second airflow channel and existing melt-blowing nozzles
Air demand is equal, then can reduce the diameter of meltblown fibers under the premise of not increasing energy consumption substantially.Above-mentioned melt-blowing nozzles are made
The diameter of standby fiber reduces 70% or more than the diameter of fiber prepared by existing melt-blowing nozzles, reaches nano-scale dimension.
Above-mentioned first air-flow and the second air-flow have pressure difference, and specifically, the pressure of the first air-flow is greater than the second air-flow
Pressure or the pressure of the second air-flow are greater than the pressure of the first air-flow.
In order to improve drawing effect, meltblown fibers are further refined, the preferential pressure for selecting the first air-flow is greater than the second gas
The pressure of stream.
In order to improve the function and effect of the first air-flow, 1 coaxial line of above-mentioned first airflow channel 3 and ring spinning hole.In this way,
So that the first air-flow is located at the middle of strand, the uniform force of strand is improved.
Certainly, above-mentioned first airflow channel 3 and the setting of the not coaxial line of ring spinning hole 1 may be selected, it is not limited to this.
In order to improve the function and effect of the second air-flow, above-mentioned second airflow channel 2 is located at the two sides of ring spinning hole 1.Into
One step, the second airflow channel 2 positioned at 1 two sides of ring spinning hole is arranged about the axisymmetrical of ring spinning hole 1.
For the number of ring spinning hole 1, selected according to actual needs.For example, ring spinning hole 1 is at least two
A, then the second airflow channel 2 is two rows of, in every row, the distribution arrangement of the second airflow channel 2 and the distribution side of ring spinning hole 1
To consistent.
The symmetry axis of above-mentioned second airflow channel 2 can be parallel to the axis of ring spinning hole 1, can also be with ring spinning hole 1
Axis relative tilt setting.For the ease of the second airflow function in strand, above-mentioned second airflow channel 2 is relative to annular spinneret
Hole 1 is obliquely installed, i.e., the symmetry axis of above-mentioned second airflow channel 2 is obliquely installed relative to the axis of ring spinning hole 1.It can manage
Solution, in order to guarantee the second airflow function in strand, the second airflow channel 2 is exported from its entrance to it to ring spinning hole 1
Inclination.
For the tilt angle of the second airflow channel 2, selected according to actual needs.For the ease of guaranteeing the second air-flow
Stretch strand, positioned at two the second airflow channels 2 of 1 two sides of ring spinning hole symmetry axis angle value range be 45 °-
75°。
In above-mentioned melt-blowing nozzles, the value range that above-mentioned angle also may be selected is other numerical value, as long as guaranteeing the second air-flow
Strand can be stretched, it is not limited to above-described embodiment.
Certainly, other modes also may be selected and arranges the second airflow channel, for example, the second airflow channel 2 at least two, and
Along the circumferentially distributed of ring spinning hole 1.
Preferably, the circular in cross-section of above-mentioned first airflow channel 3, the cross section of the second airflow channel 2 are in rectangle, ring
Shape spinneret orifice 1 is in circular ring shape.
Further, the diameter value range of the first airflow channel 3 is 0.1mm-0.8mm；The inside radius of ring spinning hole 1
Difference value range with outer radius is 0.2mm-0.53mm；The exit width value range of second airflow channel 2 is 0.5mm-
0.7mm。
Certainly, it is other shapes that above-mentioned first airflow channel 3, the second airflow channel 2 and ring spinning hole 1, which also may be selected,
Shape, it is not limited to above-described embodiment, for example, the first airflow channel 3 is oval, ring spinning hole 1 is in oval ring, and second
Airflow channel 2 is in kidney-shaped.
For the ease of to 2 supply gas of the first airflow channel 3 and the second airflow channel, above-mentioned first airflow channel 3 is by
One gas source supply gas, the second airflow channel 2 is by the second gas source supply gas, and the first gas source and the second gas source are mutually indepedent.
In particular, using above-mentioned supply mode, easily facilitating guarantee when the first air-flow and the second air-flow have pressure difference
First air-flow and second air-flow have pressure difference, have further facilitated supply.
In above-mentioned melt-blowing nozzles, ring spinning hole 1 and the first airflow channel 3 are arranged on nozzle intermediate mass 4, nozzle side block
The second airflow channel 2 is formed between 5 and nozzle intermediate mass 4.Certainly, above-mentioned ring spinning hole 1 and the first airflow channel 3 may be selected
And second airflow channel 2 formed by other structures, it is not limited to this.
The advantages of in order to more specifically protrude melt-blowing nozzles provided by the embodiment of the utility model, has below according to five
Body embodiment is illustrated.
Embodiment one
Polymer melt is extruded into strand from ring spinning hole, and the first air-flow of high speed is sprayed from the first airflow channel,
Meanwhile the second air-flow of high speed is sprayed from the second airflow channel.Wherein, the angle of two the second airflow channels is 60 °, the second gas
The exit width e of circulation road is 0.6mm, and the diameter c of the first airflow channel is 0.1mm, the difference of the interior outer radius of ring spinning hole
Value d is 0.35mm.Raw material polypropylene is provided, polyacrylic melt flow rate is 1000g/10min, and polyacrylic flow is
0.022g/s, polyacrylic initial temperature are 290 DEG C, and the pressure of the first air-flow is 350kPa, and the pressure of the second air-flow is
150kPa, the gas pressure of existing melt-blown dual slot die are 500kPa, and gas initial temperature is 310 DEG C.
The diameter average value of meltblown fibers obtained is 221nm under above-mentioned condition, and conventional meltblown double flute under equal conditions
The diameter average value of meltblown fibers prepared by shape nozzle is 1.02 μm.After melt-blowing nozzles provided by the utility model, melt
The diameter of spray fiber than reducing 78.3% originally.
Embodiment two
Polymer melt is extruded into strand from ring spinning hole, and the first air-flow of high speed is sprayed from the first airflow channel,
Meanwhile the second air-flow of high speed is sprayed from the second airflow channel.Wherein, the angle of two the second airflow channels is 60 °, the second gas
The exit width e of circulation road is 0.6mm, and the diameter c of the first airflow channel is 0.8mm, the difference of the interior outer radius of ring spinning hole
Value d is 0.53mm.Raw material polypropylene is provided, polyacrylic melt flow rate is 75g/10min, and polyacrylic flow is
0.006g/s, polyacrylic initial temperature are 310 DEG C, and the pressure of the first air-flow is 260kPa, and the pressure of the second air-flow is
190kPa, the gas pressure of existing melt-blown dual slot die are 450kPa, and gas initial temperature is 380 DEG C.
The diameter average value of meltblown fibers obtained is 558nm under above-mentioned condition, and conventional meltblown double flute under equal conditions
The diameter average value of meltblown fibers prepared by shape nozzle is 1.91 μm.After melt-blowing nozzles provided by the utility model, melt
The diameter of spray fiber than reducing 70.8% originally.
Embodiment three
Polymer melt is extruded into strand from ring spinning hole, and the first air-flow of high speed is sprayed from the first airflow channel,
Meanwhile the second air-flow of high speed is sprayed from the second airflow channel.Wherein, the angle of two the second airflow channels is 60 °, the second gas
The exit width e of circulation road is 0.6mm, and the diameter c of the first airflow channel is 0.2mm, the difference of the interior outer radius of ring spinning hole
Value d is 0.36mm.Raw material polypropylene is provided, polyacrylic melt flow rate is 800g/10min, and polyacrylic flow is
0.031g/s, polyacrylic initial temperature are 280 DEG C, and the pressure of the first air-flow is 350kPa, and the pressure of the second air-flow is
200kPa, the gas pressure of existing melt-blown dual slot die are 550kPa, and gas initial temperature is 300 DEG C.
The diameter average value of meltblown fibers obtained is 273nm under above-mentioned condition, and conventional meltblown double flute under equal conditions
The diameter average value of meltblown fibers prepared by shape nozzle is 1.18 μm.After melt-blowing nozzles provided by the utility model, melt
The diameter of spray fiber than reducing 76.9% originally.
Example IV
Polymer melt is extruded into strand from ring spinning hole, and the first air-flow of high speed is sprayed from the first airflow channel,
Meanwhile the second air-flow of high speed is sprayed from the second airflow channel.Wherein, the angle of two the second airflow channels is 60 °, the second gas
The exit width e of circulation road is 0.6mm, and the diameter c of the first airflow channel is 0.6mm, the difference of the interior outer radius of ring spinning hole
Value d is 0.46mm.Raw material polypropylene is provided, polyacrylic melt flow rate is 100g/10min, and polyacrylic flow is
0.008g/s, polyacrylic initial temperature are 290 DEG C, and the pressure of the first air-flow is 270kPa, and the pressure of the second air-flow is
180kPa, the gas pressure of existing melt-blown dual slot die are 450kPa, and gas initial temperature is 330 DEG C.
The diameter average value of meltblown fibers obtained is 473nm under above-mentioned condition, and conventional meltblown double flute under equal conditions
The diameter average value of meltblown fibers prepared by shape nozzle is 1.74 μm.After melt-blowing nozzles provided by the utility model, melt
The diameter of spray fiber than reducing 72.8% originally.
Embodiment five
Polymer melt is extruded into strand from ring spinning hole, and the first air-flow of high speed is sprayed from the first airflow channel,
Meanwhile the second air-flow of high speed is sprayed from the second airflow channel.Wherein, the angle of two the second airflow channels is 60 °, the second gas
The exit width e of circulation road is 0.6mm, and the diameter c of the first airflow channel is 0.4mm, the difference of the interior outer radius of ring spinning hole
Value d is 0.2mm.Raw material polypropylene is provided, polyacrylic melt flow rate is 800g/10min, and polyacrylic flow is
0.057g/s, polyacrylic initial temperature are 280 DEG C, and the pressure of the first air-flow is 300kPa, and the pressure of the second air-flow is
200kPa, the gas pressure of existing melt-blown dual slot die are 500kPa, and gas initial temperature is 290 DEG C.
The diameter average value of meltblown fibers obtained is 428nm under above-mentioned condition, and conventional meltblown double flute under equal conditions
The diameter average value of meltblown fibers prepared by shape nozzle is 1.62 μm.After melt-blowing nozzles provided by the utility model, melt
The diameter of spray fiber than reducing 73.6% originally.
Above-mentioned five embodiments are only to specifically describe, the specific value of parameters, it is not limited to above-mentioned five implementation
Example.
The melt-blowing nozzles provided based on the above embodiment, the utility model embodiment additionally provide a kind of fiber preparation dress
It sets, which includes melt-blowing nozzles, which is melt-blowing nozzles described in above-described embodiment.
Since above-mentioned melt-blowing nozzles have above-mentioned technique effect, above-mentioned fiber preparation facilities has above-mentioned melt-blowing nozzles, then
Above-mentioned fiber preparation facilities also has corresponding technical effect, and repeats no more herein.
The foregoing description of the disclosed embodiments makes those skilled in the art can be realized or use the utility model.
Various modifications to these embodiments will be apparent for a person skilled in the art, general original as defined herein
Reason can be realized in other embodiments without departing from the spirit or scope of the present utility model.Therefore, this is practical new
Type is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase
Consistent widest scope.
Claims (10)
1. a kind of melt-blowing nozzles characterized by comprising for spraying the first airflow channel (3) of the first air-flow, be coated at institute
State the first airflow channel (3) and for spraying the ring spinning hole (1) of strand, be located at the outside of the ring spinning hole (1) and
For spraying the second airflow channel (2) of the second air-flow；Wherein, first air-flow and second air-flow are used to stretch institute
State strand.
2. melt-blowing nozzles according to claim 1, which is characterized in that first air-flow and second air-flow have pressure
Power is poor, and the pressure difference is greater than the surface tension of the strand.
3. melt-blowing nozzles according to claim 2, which is characterized in that the pressure of first air-flow is greater than second gas
The pressure of stream.
4. melt-blowing nozzles according to claim 2, which is characterized in that the pressure of second air-flow is greater than first gas
The pressure of stream.
5. melt-blowing nozzles according to claim 1, which is characterized in that first airflow channel (3) and the annular spray
Wire hole (1) coaxial line.
6. melt-blowing nozzles according to claim 1, which is characterized in that second airflow channel (2) is located at the annular
The two sides of spinneret orifice (1) are located at second airflow channel (2) of the ring spinning hole (1) two sides about the annular spray
The axisymmetrical of wire hole (1) is arranged.
7. melt-blowing nozzles according to claim 6, which is characterized in that second airflow channel (2) is relative to the ring
Shape spinneret orifice (1) is obliquely installed, and is located at the axis of two second airflow channels (2) of the ring spinning hole (1) two sides
The angle value range of line is 45 ° -75 °.
8. melt-blowing nozzles according to claim 1, the circular in cross-section of first airflow channel (3), described second
The cross section of airflow channel (2) is in rectangle, and the ring spinning hole (1) is in circular ring shape；
Wherein, the diameter value range of first airflow channel (3) is 0.1mm-0.8mm；The ring spinning hole (1) it is interior
The difference value range of radius and outer radius is 0.2mm-0.53mm；The exit width value model of second airflow channel (2)
It encloses for 0.5mm-0.7mm.
9. melt-blowing nozzles according to claim 1 to 8, which is characterized in that first airflow channel (3) by
First gas source supply gas, second airflow channel (2) is by the second gas source supply gas, first gas source and described second
Gas source is mutually indepedent.
10. a kind of fiber preparation facilities, including melt-blowing nozzles, which is characterized in that the melt-blowing nozzles are as in claim 1-9
Described in any item melt-blowing nozzles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821253927.6U CN208791821U (en) | 2018-08-03 | 2018-08-03 | Melt-blowing nozzles and fiber preparation facilities |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821253927.6U CN208791821U (en) | 2018-08-03 | 2018-08-03 | Melt-blowing nozzles and fiber preparation facilities |
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| Publication Number | Publication Date |
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| CN208791821U true CN208791821U (en) | 2019-04-26 |
Family
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821253927.6U Withdrawn - After Issue CN208791821U (en) | 2018-08-03 | 2018-08-03 | Melt-blowing nozzles and fiber preparation facilities |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108677254A (en) * | 2018-08-03 | 2018-10-19 | 南通纺织丝绸产业技术研究院 | Melt-blowing nozzles and fiber preparation facilities |
-
2018
- 2018-08-03 CN CN201821253927.6U patent/CN208791821U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108677254A (en) * | 2018-08-03 | 2018-10-19 | 南通纺织丝绸产业技术研究院 | Melt-blowing nozzles and fiber preparation facilities |
| CN108677254B (en) * | 2018-08-03 | 2023-12-15 | 南通纺织丝绸产业技术研究院 | Melt-blowing nozzle and fiber preparation device |
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