AU2020100846B4 - A production device of melt blown filter fabric - Google Patents
A production device of melt blown filter fabric Download PDFInfo
- Publication number
- AU2020100846B4 AU2020100846B4 AU2020100846A AU2020100846A AU2020100846B4 AU 2020100846 B4 AU2020100846 B4 AU 2020100846B4 AU 2020100846 A AU2020100846 A AU 2020100846A AU 2020100846 A AU2020100846 A AU 2020100846A AU 2020100846 B4 AU2020100846 B4 AU 2020100846B4
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- AU
- Australia
- Prior art keywords
- deflector
- roller
- die head
- melt
- blowing die
- 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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- 239000004744 fabric Substances 0.000 title claims abstract description 39
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 239000000155 melt Substances 0.000 claims abstract description 40
- 238000007664 blowing Methods 0.000 claims abstract description 27
- 230000000712 assembly Effects 0.000 claims abstract description 23
- 238000000429 assembly Methods 0.000 claims abstract description 23
- 230000007246 mechanism Effects 0.000 claims description 8
- 239000000835 fiber Substances 0.000 abstract description 30
- 238000001914 filtration Methods 0.000 abstract description 13
- 238000009825 accumulation Methods 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 5
- 230000035699 permeability Effects 0.000 abstract description 2
- 210000002845 virion Anatomy 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 239000004743 Polypropylene Substances 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 230000000241 respiratory effect Effects 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 101100379080 Emericella variicolor andB gene Proteins 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000004750 melt-blown nonwoven Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Abstract
A production device of melt blown filter fabric consists of a melt blowing die head and a receiving
device, and the receiving device comprises two roller assemblies arranged in a parallel and
paratactic way, and a nozzle of the melt blowing die head is arranged towards the gap between
the two roller assemblies; wherein: the nozzle of the melt blowing die head is provided with
afirst deflector anda second deflector, and the distance between the tails of the first deflector
and the second deflector is larger than the distance between the roots of the first deflector
and the second deflector, so as to form a relatively closed horn-shaped traction space at the
nozzle of the melt blowing die head; and the roots of the first deflector and the second deflector
are pivotally connected relative to the melt blowing die head to make the included angle of the
first deflector and second deflector adjustable. This utility model can make the internal fibers
of products show stereoscopic accumulation, make the products have good air permeability (i.e.
low resistance) and index of high-efficient filtration element material after electrostatic
electret (i.e. high filtration efficiency) reaches p:97%, which can filter 0.1 micron virion.
Description
A production device of melt blown filter fabric
[0001] The utility model relates to a production equipment of melt blown filter fabric, which
can be used as filter element material for masks and various filters.
[0002] The filter element materials of N95 masks on the market are polypropylene (PP) melt blown
non-woven fabric (hereinafter referred to as melt blown filter fabric). The melt blown fabric
is randomly distributed and bonded by superfine fibers of polypropylene and the random
distribution of fibers makes the melt blown filter fabric have larger specific surface area and
higher porosity.
[0003] The melt blown filter fabric is melt blown non-woven fabric manufactured with the
extraction of fine filament of polymer melt extruded from spinneret orifice by high-speed hot
air flow to form superfine fiber to be collected on flat screen or roller and with the self
adhesion.
[0004] As a filter material, it is always the research direction of filter element industry to
improve the filtration performance ofmelt blown filter fabric and make it exceedtheN95 standard.
However, it is well known that the improvement of filtration performance will inevitably lead
to the increase of filtration resistance, which is a pair of contradictions.
[0005] In order to improve the filtration efficiency without affecting the filtration resistance
too much, it is necessary to increase the electret static electricity. In order to maximize the
static electricity, the structural requirements of the melt blown filter fabric are as follows:
first, the fiber shall be thin, and is required to be 1-2 micrometer; second, the fiber
accumulation needs to be as tangled and stereoscopic as possible.
[0006] The existing production equipment of the melt blown filter fabric has been very mature
andhasnot changed for many years. Its main body consists ofamelt blowing die head and areceiving
device. The melt blowing die head consists of a melt placement assembly and a hot air generation
assembly, etc, and its spinneret orifice of melt blowing die head is set toward the receiving
device, while the receiving device is divided into a flat screen or a roller type. Most of the
existing drum type receivers are single drum type, but few are double drum type. And it is found
in the patent bulletin that the design purpose and actual effect of CN 103015043 A' s melt blown
double drum receiver is to make both sides of the produced melt blown fabrics smoother and improve
the flatness of the fabric surface, but it does' t study that double-roller receiving can improve
stereoscopic fiber of fabric surface, and according to the design concept of the prior art, the simultaneous extrusion of both sides of fabric by double rollers extrudes the fabric to be compacter and smoother, and it' s contrary to the improvement of stereoscopic fiber of fabric surface.
[0007] It' s an object of this utility model to provide a production device of the melt blown
filter fabric to make the fiber structure of produced melt blown filter fabrics tangled and
stereoscopic, so as to improve the filtration efficiency and maintain the low filtration
resistance as well.
[0008] In order to achieve the above object, the technical solution adopted in this utility model
is: a production device of melt blown filter fabric consists of a melt blowing die head and a
receiving device, and the receiving device comprises two roller assemblies arranged in a parallel
and paratactic way, and a nozzle of the melt blowing die head is arranged towards the gap between
the two roller assemblies;
The nozzle of the melt blowing die head is provided with a first deflector and a second deflector,
and both the first deflector and second deflector are arranged along the central axial direction
of the roller assembly in the length direction. And the first deflector and the second deflector
are bilaterally symmetrical with the nozzle as the center, and the distance between the tails
of the first deflector and the second deflector is larger than the distance between the roots
of the first deflector and the second deflector, so as to form a relatively closed horn-shaped
traction space at the nozzle of the melt blowing die head;
And the roots of the firstsdeflectorandtheseconddeflector are pivotally connected relative
to the melt blowing die head to make the included angle of the first deflector and second deflector
adjustable.
[0009] The above described technical solution is explained as follows:
1. In above described technical solution, the first deflector and the second deflector are
equipped with angle adjusting mechanisms.
[0010] 2. In above described technical solution, the two roller assemblies are arranged on a
lifting platform through a bearing slide and the direction of the bearing slide is the same as
the connection direction of the two roller assemblies, so that spacing between the two roller
assemblies and the distance between the roller assembly to the nozzle can be adjusted.
3. In above described technical solution, the roller assembly consists of a roller frame, mesh
cylinder and suction air duct, and the suction air duct is fixed relative to the device rack,
the roller frame is movably sleeved over the suction air duct and the suction air duct is provided
with a suction air opening; the roller frame and variable frequency motor drive its rotation; the mesh cylinder is a cylinder with mesh holes on it and the mesh cylinder is fixedly covered on the roller frame; the suctionairduct is connected with a variable frequency suction ventilator through a pipe to form a suction system inside the roller.
[0011] Due to the application of the above described technical solution, the utility model has
the following advantages and effect in comparison with the prior art:
As the utility model adds the deflectors and adopts the double-roller receiving device, the first
deflector and the second deflector form the relatively closed traction space at the nozzle of
the melt blowing die head. During operation, when hot air and melt enter the gap between the
first deflector and the second deflector, a relatively closed traction space D is formed in this
section due to the narrow space and horn-shaped guide, so the air speed in the traction space
D is forcibly accelerated, and the traction space D is relativelyclosed, so that the temperature
in this area is maintained (the temperature drops slowly). The melt is drawn into fiber by
high-speed hot air in the traction space D, and the fiber is immediately cooled by surrounding
air 27, 28 after it's drawn out of the traction space D and continues to jet to the receiving
device. Meanwhile, the two roller assemblies of the receiving device are rotating in the opposite
direction, and the air suction is carried out inside the roller, so that melt blown fiber diffused
to a certain extent on the roller to form a thin to thick fiber accumulation from both sides
of the two rollers to the middle. As shown in the figure, they' re thin in areas A and B and
the fibers accumulate the most in area C and converge and output into melt blown filter fabric
with the rotation ofroller assemblies. The thin fiber layer in areaA andB is in direct adsorption
contact with the surface of the two roller assemblies (i.e. the surface of the mesh cylinder)
and the fiber layer in area A and B is the surface layer of produced fabric, while the fiber
layer accumulated in middle area C is the middle part of produced fabric, and the V-shaped gap
in area C will gradually reduce the fibers accumulated on both sides from large V-shape to
stereoscopic shape, thus improving the stereoscopic fiber arrangement of melt blown filter
fabric, so that after electrostatic electret, its test index can even reach the level of N97
(i.e., filtration efficiency 2E96%), while the filtration resistance (or respiratory resistance)
is low (respiratory resistance -i 29mm H 2 0).
[0012] Figure 1 is a structure view of this utility model;
Figure 2 is a schematic view of the first deflector (or the second deflector) of the utility
model;
Figure 3 is a front view of receiving device;
Figure 4 is a left view of Figure 4;
Figure 5 is a exploded view of roller assembly of this utility model;
[0013] In the above figures: 1. melt blowing die head; 11. nozzle; 2. receiving device; 21. roller
assembly; 211. roller frame; 212. mesh cylinder; 213. suction air duct; 2131. suction air opening;
22. roller wallboard; 23. bearing slide; 24. lifting platform; 3. first deflector; 31. pivot;
4. second deflector; 41. pivot; 5. angle adjusting mechanism; 51. deflector adjusting lever;
52. gear securing part; A. area; B. area; C. area; D. traction space.
[0014] With reference to the accompanying figures and embodiment, the present utility model will
be described in detail.
Embodiment: refer to Fig. 1--5:
A production device of melt blown filter fabric consists of a melt blowing die head 1 and a
receiving device 2, which are the core parts of the production of the melt blown filter fabric.
It actually can also include additional parts such as a subsequent rolling device to roll up
the produced melt blown filter fabrics.
[0015] As shown in Fig. 1, the receiving device 2 comprises two roller assemblies 21 arranged
in a parallel and paratactic way, and a nozzle of the melt blowing die head 1 is arranged towards
the gap between the two roller assemblies 21;
[0016] As shown in Fig. 1, the nozzle 11 of the melt blowing die head 1 is provided with a first
deflector 3 and a second deflector 4, and both the first deflector 3 and second deflector 4 are
arranged along the central axial direction of the roller assembly 21 in the length direction.
And the first deflector 3 and the second deflector 4 are bilaterally symmetrical with the nozzle
11 as the center, and the distance between the tails of the first deflector 3 and the second
deflector 4 is larger than the distance between the roots of the first deflector 3 and the second
deflector 4, so as to form a relatively closed horn-shaped traction space at the nozzle 11 of
the melt blowing die head 1.
[0017] And as shown in Fig. 1, the roots of the first deflector 3 and the second deflector 4
are pivotally connected relative to the melt blowing die head 1 to make the included angle of
the first deflector 3 and second deflector 4 adjustable.
[0018] Specifically, as shown in Fig. 2, the first deflector 3 and the second deflector 4 are
strip-shaped arc-section plates, and their roots are provided with through holes for pivots where
a pivot 31 or 41 goes through. In practice, the first deflector 3 and the second deflector 4
may also be of flat plate shape, and the cross section may be any shape.
[0019] The first deflector 3 and the second deflector 4 are provided with an angle adjusting
mechanism 5, and the angle adjusting mechanism 5 can be existing adjusting mechanisms, either a manual adjusting mechanism or an automatic adjusting mechanism. As shown in the figure, it consists of a deflector adjusting lever 51 and a gear securing part and the deflector adjusting levers 51 are fixed on the first deflector and the second deflector 4, and the tail end of the deflector adjusting lever 51 is positioned in multiple gears through the gear securing part 51 and can be switched for adjustment.
[0020] Specifically, the melt blowing die head 1 consists of a melt placement assembly and a
hot air generation assembly, etc, and the melt placement assembly of the melt blowing die head
1 contains the melt and the feeding and pressure device sends the melt into the melt placement
assembly for extrusion; the hot air generation assembly comprises a hot air channel around the
melt injection outlet of the melt placement assembly, and the hot air channel is connected with
the hot air supply device to provide hot air of a certain temperature and pressure. The above
feeding and pressure deviceandhotair supply device are all prior art, whichwillnotbe described
here.
[0021] As shown in Fig. 3-4, the receiving device 2 also comprises a roller wallboard 22, a bearing
slide 23, and a lifting platform 24, etc, besides the two roller assemblies 21. The two roller
assemblies are arranged on the respective roller wallboards 22, and the roller wallboards 22
are arranges on a lifting platform 24 through a bearing slide 23 and the direction of the bearing
slide 23 is the same as the connection direction of the two roller assemblies 21, so that spacing
between the two roller assemblies 21 and the distance between the roller assembly 21 to the nozzle
11 can be adjusted.
[0022] As shown in Fig. 3-5, the roller assembly 21 consists of a roller frame 211, mesh cylinder
212 and suction air duct 213, and the suction air duct 213 is fixed relative to the device rack
, the roller frame 211 is movably sleeved over the suction air duct 213 and the suction air duct
213 is provided with a suction air opening 2131. The roller frame 211 and variable frequency
motor (shown in figure) drive its rotation; the mesh cylinder212 is a cylinder with mesh holes
on it and the mesh cylinder 212 is fixedly covered on the roller frame 211; the suction air duct
213 is connected with a variable frequency suction ventilator (shown in figure) through a pipe
to form a suction system inside the roller.
[0023] During operation, when hot air and melt enter the gap between the first deflector 3 and
the second deflector 4, a relatively closed traction space D is formed in this section due to
the narrow space and horn-shaped guide, so the air speed in the traction space D is forcibly
accelerated, and the traction space D is relatively closed, so that the temperature in this area
is maintained (the temperature drops slowly). The melt is drawn into fiber by high-speed hot
air in the traction space D, and the fiber is immediately cooled by surrounding air after it' s drawn out of the traction space D and continues to jet to the receiving device. Meanwhile, the two roller assemblies 21 of the receiving device are rotating in the opposite direction, and the air suction is carried out inside the roller, so that melt blown fiber diffused to a certain extent on the roller to form a thin to thick fiber accumulation from both sides of the two rollers to the middle. As shown in the figure, they' re thin in areas A and B and the fibers accumulate the most in area C and converge and output into melt blown filter fabric with the rotation of roller assemblies 21. The thin fiber layer in area A and B is in direct adsorption contact with the surface of the two roller assemblies 21 (i.e. the surface of the mesh cylinder 212) and the fiber layer in area A and B is the surface layer of produced fabric, while the fiber layer accumulated in middle area C is the middle part of produced fabric, and the V-shaped gap in area
C will gradually reduce the fibers accumulated on both sides from large V-shape to stereoscopic
shape, thus improving the stereoscopic fiber arrangement of melt blown filter fabric. In this
embodiment, the fineness of the melt blown filament can be slightly adjusted by adjusting the
deflector, and the gram weight of produced fabric (0.5 - 2MM) can be adjusted by adjusting the
spacing between the rollers, so that the both sides of produced fabric are smooth and bright,
the internal fibers show stereoscopic accumulation, the fabric has good air permeability (i.e.
low resistance) and index of high-efficient filtration element material after electrostatic
electret (i.e. high filtration efficiency) reaches p:97%, which can filter 0.1 micron virion.
[0024] It should be noted that the above described embodiments are only for illustration of technical concept and characteristics of present utility model with purpose of making those
skilled in the art understand the present utility model, and thus these embodiments shall not
limit the protection range of present utility model. The equivalent changes or modifications
according to spiritual essence of present utility model shall fall in the protection scope of
present utility model.
Claims (4)
1. A production device of melt blown filter fabric consists of a melt blowing die head and a receivingdevice,
and the receiving device comprises two roller assemblies arranged in a parallel and paratactic way, and a
nozzle of the melt blowing die head is arranged towards the gap between the two roller assembles;
wherein:
the nozzle of the melt blowing die head is provided with a first deflector and a second deflector, and
both the first deflector and second deflector are arranged along the central axial direction of the roller
assembly in the length direction;
wherein the first deflector and the second deflector are bilaterally symmetrical with the nozzle as the
center, and the distance between the tails of the first deflector and the second deflector is larger than the
distance between the roots of the first deflector and the second deflector, so as to form a relatively closed
horn-shaped traction space at the nozzle of the melt blowing die head; and
wherein the roots of the first deflector and the second deflector are pivotally connected relative to the
melt blowing die head to make theincluded angle of the first deflector and second deflector adjustable.
2. The production device of melt blown filter fabric in Claim 1, wherein: the first deflector and the second
deflector are equipped with angle adjusting mechanisms.
3. The production device of melt blown filter fabric in Claim 1, wherein: the two roller assemblies are
arranged on a lifting platform through a bearing slide and the direction of the bearing slide is the same as
the connection direction of the two roller assemblies, so that spacing between the two roller assemblies and
the distance between the roller assembly to the nozzle can be adjusted.
4. The production device of melt blown filter fabric in Claim 1, wherein: the roller assembly consists of a
roller frame, mesh cylinder and suction air duct, and the suction air duct is fixed relative to thedevice rack,
the roller frame is movably sleeved over the suction air duct and the suction air duct is provided with a
suction air opening; the roller frame and variable frequency motor drive its rotation; the mesh cylinder is a
cylinder with mesh holes on it and the mesh cylinder is fixedly covered on the roller frame; the suction air
duct is connected with a variable frequency suction ventilator through a pipe to form a suction system
inside the roller.
2020100846 Drawings
Fig.1
Fig. 1 10004 2006.7
2020100846 Drawings
Fig.
Fig. 2 10004 2006.7
2020100846 Drawings
Fig.
3 10004 2006.7
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020168366.0 | 2020-02-13 | ||
| CN202020168366.0U CN212316388U (en) | 2020-02-13 | 2020-02-13 | Production device for melt-blown filter cloth |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU2020100846A4 AU2020100846A4 (en) | 2020-07-02 |
| AU2020100846B4 true AU2020100846B4 (en) | 2021-04-01 |
Family
ID=71132001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2020100846A Ceased AU2020100846B4 (en) | 2020-02-13 | 2020-05-26 | A production device of melt blown filter fabric |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP3227630U (en) |
| CN (1) | CN212316388U (en) |
| AU (1) | AU2020100846B4 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113215726B (en) * | 2021-05-11 | 2022-12-13 | 江苏奥特隆新材料有限公司 | Intelligent non-woven fabric melt-blowing machine and non-woven fabric production process |
| US11958308B1 (en) | 2023-05-31 | 2024-04-16 | G13 Innovation In Production Ltd | Thermal paper, and methods and systems for forming the same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5811186A (en) * | 1995-05-25 | 1998-09-22 | Minnesota Mining And Manufacturing, Inc. | Undrawn, tough, durably melt-bonded, macrodenier, thermoplastic, multicomponent filaments |
| US20030147982A1 (en) * | 2002-02-07 | 2003-08-07 | Nordson Corporation | Forming system for the manufacture of thermoplastic nonwoven webs and laminates |
| WO2008092749A1 (en) * | 2007-01-31 | 2008-08-07 | Oerlikon Textile Gmbh & Co. Kg | Method and apparatus for drawing and depositing a plurality of fibers to form a non-woven |
| WO2013160134A1 (en) * | 2012-04-27 | 2013-10-31 | Oerlikon Textile Gmbh & Co. Kg | Method and device for melt-blowing, forming and plaiting finite fibres to produce a fibrous nonwoven |
-
2020
- 2020-02-13 CN CN202020168366.0U patent/CN212316388U/en active Active
- 2020-05-26 AU AU2020100846A patent/AU2020100846B4/en not_active Ceased
- 2020-06-01 JP JP2020002054U patent/JP3227630U/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5811186A (en) * | 1995-05-25 | 1998-09-22 | Minnesota Mining And Manufacturing, Inc. | Undrawn, tough, durably melt-bonded, macrodenier, thermoplastic, multicomponent filaments |
| US20030147982A1 (en) * | 2002-02-07 | 2003-08-07 | Nordson Corporation | Forming system for the manufacture of thermoplastic nonwoven webs and laminates |
| WO2008092749A1 (en) * | 2007-01-31 | 2008-08-07 | Oerlikon Textile Gmbh & Co. Kg | Method and apparatus for drawing and depositing a plurality of fibers to form a non-woven |
| WO2013160134A1 (en) * | 2012-04-27 | 2013-10-31 | Oerlikon Textile Gmbh & Co. Kg | Method and device for melt-blowing, forming and plaiting finite fibres to produce a fibrous nonwoven |
Also Published As
| Publication number | Publication date |
|---|---|
| CN212316388U (en) | 2021-01-08 |
| AU2020100846A4 (en) | 2020-07-02 |
| JP3227630U (en) | 2020-09-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FGI | Letters patent sealed or granted (innovation patent) | ||
| PC | Assignment registered |
Owner name: CHUANGHONG MOTOR CO., LTD Free format text: FORMER OWNER(S): SHANGHAI JOINTAUTO NEW MATERIALS CO., LTD |
|
| NB | Applications allowed - extensions of time section 223(2) |
Free format text: THE TIME IN WHICH TO GAIN CERTIFICATION HAS BEEN EXTENDED TO 21 MAY 2021 |
|
| FF | Certified innovation patent | ||
| MK22 | Patent ceased section 143a(d), or expired - non payment of renewal fee or expiry |