CN110203730A - A kind of papermaking felt needling machine unwinding device - Google Patents
A kind of papermaking felt needling machine unwinding device Download PDFInfo
- Publication number
- CN110203730A CN110203730A CN201910616001.1A CN201910616001A CN110203730A CN 110203730 A CN110203730 A CN 110203730A CN 201910616001 A CN201910616001 A CN 201910616001A CN 110203730 A CN110203730 A CN 110203730A
- Authority
- CN
- China
- Prior art keywords
- wadding
- elevator
- wool
- wool roller
- unwinding device
- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H16/00—Unwinding, paying-out webs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H16/00—Unwinding, paying-out webs
- B65H16/10—Arrangements for effecting positive rotation of web roll
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H18/00—Needling machines
- D04H18/02—Needling machines with needles
Abstract
The invention belongs to felt making apparatus technical fields, more particularly to a kind of papermaking felt needling machine unwinding device, it includes rack, fabric guide roll, acupuncture mechanism and the first wadding of wool roller unreeled for front, further includes computer, PLC controller, first pressure sensor and the first elevator；Fabric guide roll and acupuncture mechanism are respectively provided on the rack, and acupuncture mechanism and PLC controller are connect with computer；PLC controller goes up and down mechatronics with first pressure sensor and first respectively, first elevator is also provided on the rack, first wadding of wool roller frame is located at the lift side of the first elevator, and first pressure sensor is arranged between the first wadding of wool roller and the lift side of the first elevator.The first wadding of wool roller can be effectively avoided vacantly either to be extruded on base net by the papermaking felt needling machine unwinding device, the quality for causing wadding of wool to be laid with is affected to be happened, to improve the laying quality of wadding of wool.
Description
Technical field
The invention belongs to paper making equipment technical fields, and in particular to a kind of papermaking felt needling machine unwinding device.
Background technique
Felt belongs to high-performance dehydrating material, in paper machine paper-making process, plays dehydration, carrying, conveying and decoration
The effect of page.Carrier of the felt as paper pulp and wet page paper, constantly squeezes by pressure roller, moisture is made to enter felt
Internal voids are simultaneously taken out of by it and are dehydrated, and therefore, the quality of woollen blanket directly influences the quality of paper, still, hair in the prior art
The manufacturing process of blanket has following problems:
(1) the wadding of wool roller for being wound with wadding of wool is extruded on base net, becomes wadding of wool by the extruding of base net and wadding of wool roller
Shape (as shown in Figure 1)；
(2) the wadding of wool roller for being wound with wadding of wool is in vacant state, and wadding of wool roller is driven to rotate by the tractive force of wadding of wool itself,
The tractive force can increase the drawing-off of wadding of wool, cause the damage and deformation (as shown in Figure 2) of wadding of wool.
Problem above will affect the quality of woollen blanket, so that the quality of the paper of paper machine manufacture is influenced, therefore it provides one
Kind can preferably complete the unwinding device of the production of woollen blanket, be those skilled in the art's technical problem urgently to be resolved.
Summary of the invention
In order to solve the above problems existing in the present technology, the present invention provides a kind of papermaking felt needling machine unwinding device,
The ropy technical problem of woollen blanket is influenced to solve the distance between wadding of wool roller and base net existing in the prior art.
The present invention implements by the following technical programs:
A kind of papermaking felt needling machine unwinding device, including rack, fabric guide roll, acupuncture mechanism and unreeled for front the
One wadding of wool roller further includes computer, PLC controller, first pressure sensor and the first elevator；
The fabric guide roll and the acupuncture mechanism are arranged in the rack, the acupuncture mechanism and PLC control
Device is connect with the computer；
The PLC controller respectively with the first pressure sensor and it is described first lifting mechatronics, described first
Elevator is also disposed in the rack, and the first wadding of wool roller frame is located at the lift side of first elevator, and described first
Pressure sensor is arranged between the first wadding of wool roller and the lift side of first elevator.
In order to preferably realize the present invention, make further optimization, the lifting of first elevator in said structure
It is provided with the portion of hanging on end, it is described to hang the first support frame for being linked in portion and being used to support the first wadding of wool roller, described
The setting of one pressure sensor is in first support frame and described hangs between portion.
In order to preferably realize the present invention, make further optimization in said structure, first support frame passes through institute
State the lift side that first elevator is set of shaft rotation.
In order to preferably realize the present invention, makees further optimization in said structure, be arranged on first support frame
There are two idler wheel, and the distance between two described idler wheels are less than the diameter of the shaft of the first wadding of wool roller, and described first mao
Winding up roller is rolled by shaft to be arranged on two idler wheels.
In order to preferably realize the present invention, make further optimization in said structure, which unreels
Device further includes the second wadding of wool roller unreeled for reverse side and the second elevator for being used to support the second wadding of wool roller, described
Second elevator is arranged on the rack, and the second wadding of wool roller frame is located at the lift side of second elevator, and described second
Second pressure sensor is provided between wadding of wool roller and the lift side of second elevator.
In order to preferably realize the present invention, make further optimization, the lifting of second elevator in said structure
End is provided with the second support frame, and the lift side of second elevator and described second is arranged in the second pressure sensor
Between support, the lift side of second elevator is arranged in by the second support frame for the second wadding of wool roller.
In order to preferably realize the present invention, make further optimization in said structure, first elevator includes step
Into motor and mutually matched worm gear and worm screw, the power output end of the stepper motor is connect with the worm gear, the extension
If portion is arranged on the worm screw.
In order to preferably realize the present invention, make further optimization in said structure, first elevator further includes
The power output end of speed reducer, the stepper motor is connect by the speed reducer with the worm gear.
In order to preferably realize the present invention, make further optimization, the structure of second elevator in said structure
It is identical as the structure of first elevator.
In order to preferably realize the present invention, make further optimization in said structure, the first wadding of wool roller and described
Second wadding of wool roller is metal tube.
In conclusion the present invention has following technical effect that
When in use, which works asynchronously with fabric guide roll, and computer is obtained by the working frequency of acupuncture mechanism
The length of the woollen blanket of fabric guide roll output to calculate the theoretical weight value of remaining wadding of wool on the first wadding of wool roller, and the information is sent out
It send to PLC controller, will be remained in the theoretical weight value and the first wadding of wool roller of first pressure sensor detection by PLC controller
The actual weight value of remaining wadding of wool compares, and judges the state of the first wadding of wool roller and base net, make wadding of wool on the first wadding of wool roller always with
Base net on fabric guide roll is tangent, so that wadding of wool roller be avoided to squeeze base net, causes wadding of wool to deform or tractive force is excessive leads to hair
The case where volume deforms, damages and influence the quality of woollen blanket generation.
In addition, prioritization scheme of the invention also has following technical effect that
(1) prioritization scheme of the invention is the setting that is rotated by shaft of the first support frame on the first elevator, is avoided
The case where first support frame on the first elevator by falling, to make the structure of the papermaking felt needling machine unwinding device more
The stabilization added.
(2) it further includes the second wadding of wool roller that prioritization scheme of the invention, which is the papermaking felt needling machine unwinding device, this first
The front that wadding of wool roller and the second wadding of wool roller can be respectively used to base net is unreeled to be unreeled with reverse side, and the papermaking felt needling machine is made to unreel dress
Set that it is more convenient to use.
(3) it includes worm gear and worm screw that prioritization scheme of the invention, which is the first elevator, and the cooperation of the worm gear and worm screw can
The lifting distance of accurate control the first elevator and the second elevator, to make on the first wadding of wool roller and/or the second wadding of wool roller
Wadding of wool is just contacted with base net, to improve the quality of the woollen blanket of papermaking felt needling machine unwinding device production.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural schematic diagram that wadding of wool roller squeezes base net state；
Fig. 2 is the structural schematic diagram that wadding of wool roller is in vacant state；
Fig. 3 is the structural schematic diagram of one of embodiment 1 papermaking felt needling machine unwinding device；
Fig. 4 is the structural schematic diagram of the first elevator；
Fig. 5 is the structural schematic diagram of one of embodiment 2 papermaking felt needling machine unwinding device；
Fig. 6 is the structural schematic diagram of the second elevator.
Appended drawing reference:
1, rack；；2, fabric guide roll；3, acupuncture mechanism；4, the first wadding of wool roller；5, computer；6, PLC controller；7, first
Pressure sensor；8, the first elevator；9, portion is hung；10, the first support frame；11, idler wheel；12, the second wadding of wool roller；13, second
Elevator；14, second pressure sensor；15, the second support frame；16, base net.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, technical solution of the present invention will be carried out below
Detailed description.Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art are obtained all without making creative work
Other embodiment belongs to the range that the present invention is protected.
Embodiment one:
It is as shown in Figure 3 and Figure 4:
A kind of papermaking felt needling machine unwinding device, including rack 1, fabric guide roll 2, acupuncture mechanism 3, computer 5, PLC control
Device 6, the first elevator 8, first pressure sensor 7 and the first wadding of wool roller 4 unreeled for front processed；Wherein,
Fabric guide roll 2 and acupuncture mechanism 3 are arranged in rack 1, and base net 16 is wound around on fabric guide roll 2, are driven by fabric guide roll 2
Dynamic base net 16 rotates, and acupuncture mechanism 3 can then penetrate the villus on the wadding of wool being laid on base net 16 in base net 16, makes base net
16 is even closer in conjunction with wadding of wool；
The acupuncture mechanism 3 is connect with computer 5, and computer 5 is used to calculate the theory of remaining wadding of wool on the first wadding of wool roller 4
Weight value；
First pressure sensor 7 be arranged between the first wadding of wool roller 4 and the first elevator 8, and first pressure sensor 7 with
PLC controller 6 is electrically connected, which is used to detect the actual weight of remaining wadding of wool on the first wadding of wool roller 4；
PLC controller 6 is also electrically connected with computer 5 and the first elevator 8, and PLC controller 6 can compare the theory of wadding of wool
The actual weight of weight and wadding of wool, to adjust the first wadding of wool roller 4 and base net 16 by the lifting/lowering for controlling the first elevator 8
The distance between.
Pass through a kind of papermaking felt needling machine unwinding device of above structure, when in use, the acupuncture mechanism 3 and fabric guide roll
2 synchronous workings, computer 5 obtain the length of the wadding of wool of the output of fabric guide roll 2 by the working frequency of acupuncture mechanism 3, to calculate the
The theoretical weight value of remaining wadding of wool on one wadding of wool roller 4, and send this information in PLC controller 6, it will by PLC controller 6
The actual weight value of remaining wadding of wool compares on the first wadding of wool roller 4 that the theoretical weight value is detected with first pressure sensor 7, judges
The state of first wadding of wool roller 4 and base net 16, keeps the wadding of wool on the first wadding of wool roller 4 tangent with the base net 16 on fabric guide roll 2 always, from
And avoid wadding of wool squeeze base net 16, cause wadding of wool deform or tractive force is excessive cause wadding of wool deformation, damage and influence woollen blanket
Quality the case where occur.
Specifically, the calculation of wadding of wool is as follows:
Weight=wadding of wool length × wadding of wool width × every square metre of wadding of wool weight of wadding of wool；
Above-mentioned acupuncture mechanism 3 is moved synchronously with fabric guide roll 2, and computer 5 is calculated by the working time of acupuncture mechanism 3
The distance that fabric guide roll 2 rotates, to calculate the length of the wadding of wool of the first wadding of wool roller 4 releasing；It again will be on the first wadding of wool roller 4 when machine
Total weight subtracts the weight of the wadding of wool of the first wadding of wool roller 4 releasing to get the theoretical weight of wadding of wool remaining on the first wadding of wool roller 4 out
Value, and the numerical information is sent in PLC controller 6；
Meanwhile the numerical value of the actual weight of the first wadding of wool roller 4 that first pressure sensor 7 can will test is sent to PLC
On controller 6, at this point, PLC controller 6 will the actual weight of theoretical weight and the first wadding of wool roller 4 to remaining wadding of wool carry out
Comparison；
When the theoretical weight of remaining wadding of wool is equal to the actual weight of the first wadding of wool roller 4, (the first wadding of wool roller 4 is hanging or rigid
Base net 16 is contacted well), PLC controller 6 will control the first elevator 8, and so that the first elevator 8 is driven the decline of the first wadding of wool roller 4,
Until the first wadding of wool roller 4 actual weight be in be less than to be equal to residue wadding of wool theoretical weight critical value when stop, at this point,
Wadding of wool on first wadding of wool roller 4 is then just contacted with the base net 16 on fabric guide roll 2, and will not be extruded on base net 16；
When the theoretical weight of remaining wadding of wool is greater than the actual weight of the first wadding of wool roller 4, (the first wadding of wool roller 4 is extruded in base net
On 16), PLC controller 6 will control the first elevator 8, make the first elevator 8 that the first wadding of wool roller 4 be driven to rise, until first
The actual weight of wadding of wool roller 4 be in be less than to be equal to residue wadding of wool theoretical weight critical value when stop, making the first wadding of wool roller 4
On wadding of wool just contacted with the base net 16 on fabric guide roll 2；
It can effectively avoid the first wadding of wool roller 4 hanging by above-mentioned control mode or be extruded on base net 16, lead
Cause the quality of woollen blanket is affected to happen, to improve the matter of the woollen blanket of papermaking felt needling machine unwinding device production
Amount.
Optimization, it is provided with the portion of hanging 9 on the lift side of the first above-mentioned elevator 8, this hangs and is provided with first in portion 9
Support frame 10, the first wadding of wool roller 4 are rotatably arranged on the first support frame 10, first pressure sensor 7 be then arranged the portion that hangs 9 with
Between first support frame 10, enable the actual weight value of 7 the first wadding of wool of accurate detection roller 4 of first pressure sensor.
Specifically, the first support frame 10 is " Qian " font, and the setting that one end of the first support frame 10 is rotated by shaft
In the lift side of the first elevator 8, thus the reality for measuring the first wadding of wool roller 4 for keeping first pressure sensor 7 more accurate
Border weight value, and the first support frame 10 can effectively be prevented to be not easy the case where falling from the first elevator 8.
Optimization, there are two idler wheels 11 for setting in the groove of first support frame 10, and the diameter of two idler wheels 11 is equal, and
The center of circle of two idler wheels 11 is in same horizontal line, shaft of the distance between two idler wheels 11 less than the first wadding of wool roller 4
Diameter is erected at the first wadding of wool roller 4 between two idler wheels 11, thus keep the rotation of the first wadding of wool roller 4 more smooth,
And make the replacement enhanced convenience of the first wadding of wool roller 4.
Optimization, the first above-mentioned elevator 8 includes stepper motor, worm gear and worm screw；Wherein,
Stepper motor is electrically connected with PLC controller 6, and the power output end of stepper motor is connect with worm gear, and above-mentioned hangs
Portion 9 be arranged on worm screw, controlled by PLC controller 6 stepper motor rotation direction realize the first wadding of wool roller 4 rising/
Decline.
Optimization, which further includes speed reducer, and stepper motor is connect by speed reducer with worm gear, the deceleration
Machine can reduce the revolving speed of stepper motor output, the position for the first wadding of wool of the adjustment roller 4 for keeping first elevator 8 more accurate
It sets, to preferably complete the laying of wadding of wool.
Embodiment two:
It is as shown in Figure 5 and Figure 6:
As advanced optimizing for above-described embodiment, which further includes the second wadding of wool roller 12
And second elevator 13；Second wadding of wool roller 12 is located at the inside of base net 16, and the reverse side for being mainly used for base net 16 unreels, and makes this
The wadding of wool front and back that papermaking felt needling machine unwinding device can carry out base net 16 simultaneously is laid with work, makes the papermaking hair
It is more convenient to use for blanket needing machine unwinding device.
Optimization, the lift side of the second elevator 13 is provided with the second support frame 15, above-mentioned the second wadding of wool roller 12 rotation
It is arranged on the second support frame 15, second pressure sensing is provided between the lift side of the second elevator 13 and the second support frame 15
Device 14, the second pressure sensor 14 can be used for detecting the actual weight value of the second wadding of wool roller 12, and by computer 5 with
The calculating of PLC controller 6 and compare, act the second lifting motor, to realize the position between the second wadding of wool roller 12 and base net 16
Set relationship；The control mode of the second wadding of wool roller 12 is identical as the control mode of the first wadding of wool roller 4, and just it is no longer repeated.
Preferably, idler wheel 11 there are two being also provided on the second support frame 15, the structure phase of the structure and the first support frame 10
Together, make the rotation enhanced convenience of the second wadding of wool roller 12.
Optimization, the second elevator 13 is identical with the structure of the first elevator 8.
Preferably, the first wadding of wool roller 4 and the second wadding of wool roller 12 are metal tube made of metal material.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. a kind of papermaking felt needling machine unwinding device, including rack (1), fabric guide roll (2), acupuncture mechanism (3) and for front
The the first wadding of wool roller (4) unreeled, it is characterised in that: further include computer (5), PLC controller (6), first pressure sensor (7)
With the first elevator (8)；
The fabric guide roll (2) and the acupuncture mechanism (3) are arranged on the rack (1), the acupuncture mechanism (3) and described
PLC controller (6) is connect with the computer (5)；
The PLC controller (6) is electrically connected with the first pressure sensor (7) and first elevator (8) respectively, described
First elevator (8) is also disposed on the rack (1), and the first wadding of wool roller (4) is erected at first elevator (8)
Lift side, lifting of first pressure sensor (7) setting in the first wadding of wool roller (4) and first elevator (8)
Between end.
2. papermaking felt needling machine unwinding device according to claim 1, it is characterised in that: first elevator (8)
Lift side on be provided with the portion of hanging (9), described hang is linked be used to support the first wadding of wool roller (4) on portion (9)
One support frame (10), the first pressure sensor (7) setting first support frame (10) and it is described hang portion (9) it
Between.
3. papermaking felt needling machine unwinding device according to claim 2, it is characterised in that: first support frame (10)
Lift side of the setting rotated by the shaft in first elevator (8).
4. papermaking felt needling machine unwinding device according to claim 3, it is characterised in that: first support frame (10)
There are two idler wheel (11) for upper setting, and the distance between two described idler wheels (11) are less than the shaft of the first wadding of wool roller (4)
Diameter, the first wadding of wool roller (4) by shaft roll be arranged on two idler wheels (11).
5. papermaking felt needling machine unwinding device according to any one of claim 2 to 4, it is characterised in that: further include
The second wadding of wool roller (12) for being unreeled for reverse side and the second elevator (13) for being used to support the second wadding of wool roller (12), institute
It states the second elevator (13) to be arranged on rack (1), the second wadding of wool roller (12) is erected at second elevator (13)
Lift side, and second pressure sensing is provided between the second wadding of wool roller (12) and the lift side of second elevator (13)
Device (14).
6. papermaking felt needling machine unwinding device according to claim 5, it is characterised in that: second elevator (13)
Lift side be provided with the second support frame (15), the second pressure sensor (14) is arranged in second elevator (13)
Between lift side and second support frame (15), the second wadding of wool roller (12) is arranged by the second support frame (15) described
The lift side of second elevator (13).
7. papermaking felt needling machine unwinding device according to claim 6, it is characterised in that: first elevator (8)
Including stepper motor and mutually matched worm gear and worm screw, the power output end of the stepper motor is connect with the worm gear,
Described hang portion (9) are arranged on the worm screw.
8. papermaking felt needling machine unwinding device according to claim 7, it is characterised in that: first elevator (8)
It further include speed reducer, the power output end of the stepper motor is connect by the speed reducer with the worm gear.
9. papermaking felt needling machine unwinding device according to claim 8, it is characterised in that: second elevator (13)
Structure it is identical as the structure of first elevator (8).
10. papermaking felt needling machine unwinding device according to claim 9, it is characterised in that: the first wadding of wool roller (4)
It is metal tube with the second wadding of wool roller (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910616001.1A CN110203730A (en) | 2019-07-09 | 2019-07-09 | A kind of papermaking felt needling machine unwinding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910616001.1A CN110203730A (en) | 2019-07-09 | 2019-07-09 | A kind of papermaking felt needling machine unwinding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110203730A true CN110203730A (en) | 2019-09-06 |
Family
ID=67796892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910616001.1A Pending CN110203730A (en) | 2019-07-09 | 2019-07-09 | A kind of papermaking felt needling machine unwinding device |
Country Status (1)
| Country | Link |
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| CN (1) | CN110203730A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2718036A1 (en) * | 1976-05-05 | 1977-11-17 | Albany Int Corp | PAPER MAKING FELT AND METHOD FOR MAKING IT |
| CN2638855Y (en) * | 2003-08-26 | 2004-09-08 | 上海金熊造纸网毯有限公司 | Backing-off tension compensation device for roll of paermaking felt |
| CN101688367A (en) * | 2007-06-20 | 2010-03-31 | 阿尔巴尼国际公司 | Industrial fabric with porous and controlled plasticized surface |
| CN102383268A (en) * | 2011-09-26 | 2012-03-21 | 常熟市鑫泰机械设备有限公司 | Closed papermaking felt needling machine |
| CN103328709A (en) * | 2011-01-22 | 2013-09-25 | 特吕茨勒非织造布有限公司 | Device and method for producing a nonwoven composite fabric |
-
2019
- 2019-07-09 CN CN201910616001.1A patent/CN110203730A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2718036A1 (en) * | 1976-05-05 | 1977-11-17 | Albany Int Corp | PAPER MAKING FELT AND METHOD FOR MAKING IT |
| FR2350195A1 (en) * | 1976-05-05 | 1977-12-02 | Albany Int Corp | NON-WOVEN FELT FOR STATIONERY |
| CN2638855Y (en) * | 2003-08-26 | 2004-09-08 | 上海金熊造纸网毯有限公司 | Backing-off tension compensation device for roll of paermaking felt |
| CN101688367A (en) * | 2007-06-20 | 2010-03-31 | 阿尔巴尼国际公司 | Industrial fabric with porous and controlled plasticized surface |
| CN103328709A (en) * | 2011-01-22 | 2013-09-25 | 特吕茨勒非织造布有限公司 | Device and method for producing a nonwoven composite fabric |
| CN102383268A (en) * | 2011-09-26 | 2012-03-21 | 常熟市鑫泰机械设备有限公司 | Closed papermaking felt needling machine |
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Application publication date: 20190906 |