CN1352591A - Screen pipe for dry forming web material - Google Patents
Screen pipe for dry forming web material Download PDFInfo
- Publication number
- CN1352591A CN1352591A CN00808138A CN00808138A CN1352591A CN 1352591 A CN1352591 A CN 1352591A CN 00808138 A CN00808138 A CN 00808138A CN 00808138 A CN00808138 A CN 00808138A CN 1352591 A CN1352591 A CN 1352591A
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- CN
- China
- Prior art keywords
- screen
- screen pipe
- jacket
- pipe
- groove
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- 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
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
- D21D5/02—Straining or screening the pulp
- D21D5/06—Rotary screen-drums
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/10—Moulding of mats
- B27N3/14—Distributing or orienting the particles or fibres
- B27N3/146—Controlling mat weight distribution
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Mechanical Engineering (AREA)
- Nonwoven Fabrics (AREA)
- Paper (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
The invention relates to a screen pipe to be used in dry forming of web material in order to distribute fiber material blown into the screen pipe through a jacket (2) of the pipe onto a wire arranged to move under the pipe. The fiber material provided inside the screen pipe is made to move for example by means of a spiked roll placed inside the pipe, so that the movement of the fiber material has both a radial and a tangential component with respect to the jacket (2) of the screen pipe. The jacket comprises on its inner surface profiled grooves (8) in the pipe's axial direction. The edge (8a) of the profiled groove is situated downstream with respect to the tangential component of the fiber flow. The upstream edge (8b) of the groove is positioned downstream with respect to the tangential component of the fiber flow. The bottoms of the profiled grooves comprise holes or slots (9) through which the fibers are discharged from the screen pipe. In the invention, the downstream edge (8a) of the profiled groove is at a more acute angle to the tangential component of the fiber material flow than the upstream edge (8b).
Description
Invention field
The present invention relates to a kind of can be used for is distributed to a device on the translational surface that is used to form Web materials quickly and evenly with fibrous material.
Background of invention
At present, there have been multiple technologies to be used to make the reticular fibre thin plate.Wet laying is a kind of technology of the suspension liquid that contains fiber being filtered by filter screen, and fiber wherein will be combined into thin plate.When the current screen pack, the fiber in the suspension liquid will be deposited on the filter screen, thereby forms thin plate.This technology is the most useful for the no absorbability thin plate of manufacturing resemble paper.Another kind of known method is exactly the dry forming method.This method relates to the fiber that will be manufactured into thin fiber board and suspends in air.Then, these fiber laydown apply vacuum action to this braid fabric simultaneously on braid fabric, thereby are drawn onto fiber on the filter screen and make fiber keep going up in place.This method is particularly useful for the manufacturing of absorbent products.
In this area, it also is known also having several dry forming technology.But there is a common problem in the fleece of making by the dry forming method: be difficult to make fiber to be evenly distributed on the Web materials.With in the fibroreticulate industrial production of dry forming manufactured, its fiber is laid on the conveyer belt of fast moving this issue table continuously now.The invention provides a kind of device that can overcome this problem.
The present invention relates to a kind of screen pipe that is used for reticulating with the dry forming legal system material, this screen pipe can be distributed to the wire screen that can move below screen pipe online be blown into fibrous material in the screen pipe by screen jacket.The fibrous material that is present in screen pipe inside can rotate by a sharp roller that is arranged in the screen jacket, so that the motion of the screen jacket on the relative screen pipe of fibrous material comprises a radial component and a tangential component.Screen jacket comprises along the axially extended moulding groove of screen pipe (profiledgroove) on the surface within it.The tangential component of the relative fibre stream in edge of type groove is with different angle settings.The bottom of type groove comprises a plurality of holes or slit, and fiber can be discharged from screen pipe by these holes or slit.
The distributor of the above-mentioned screen pipe that can use is also known, and for example Finnish patent 66,948.This patent disclosure a kind of basic structure of distributor, this distributor is applied in the process with dry forming manufactured light sheet material usually.This distributor (being referred to as make-up machine) comprises the screen pipe of a plurality of the above-mentioned types, and these screen pipes preferably are provided with in pairs, thereby makes the fiber that flows in opposite direction cross wire along cross-current.The main cause that screen pipe is set in the above described manner is: in actual mechanical process, can not guarantee to flow through the horizontal uniform deposition in fibre stream wiry edge on wire along a direction at all, therefore also just can not form a kind of horizontal netted profile uniformly.When screen pipe is provided with in pairs, so that fibre stream be can flow in screen pipe along opposite direction the time, the lateral contour of Web materials may be more even.For a kind of Web materials of quality homogeneous, its horizontal netted varied in thickness should be minimum.Relatively the deviation of target thickness be generally ± 5%.
Fact proved:, be difficult to form laterally material uniformly with above-mentioned Finnish patent 66948 described distributors although screen pipe is to be provided with in pairs.But the basic structure of this distributor is but very useful, and the velocity of discharge of fiber is also very high, and can also form very long fiber.
Open in PCT application WO87/04474 at the screen pipe that includes the axialmode groove on the inner surface, the relative tangential component with the slot wedge that is positioned the tangential component upstream of slot wedge that wherein is positioned the tangential component downstream of fibre stream becomes different angles.In the disclosed screen pipe of this application, fibrous material rotates under the effect of a rotor that is arranged at screen pipe inside vertically or sharp roller.Rotor or roller rotate along following direction: make the fiber that produces motion by rotor or roller at first pass the bigger type groove edge in obtuse angle that the relative screen jacket tangent line of upstream edge than groove forms.This method has produced micro-turbulence, crosses the hole that is arranged on the screen pipe or the flow of slit and this micro-turbulence can improve fibre stream.
The subject matter of said apparatus is the ability by the screen pipe conveying fiber.The speed of required network speed and formation Web materials is high more, and the power demand of distributor is also big more so.The present invention has overcome the low defective of the even fiber feeding of fiber skewness ability.
Summary of the invention
The present invention relates to a kind of screen pipe, it is used for fibrous material is discharged from described screen pipe, this screen pipe comprises a columnar screen jacket, this screen jacket can be along a given direction rotation in its conventional operation process, comprise following parts within it on the surface: (a) one or more slits that pass completely through screen jacket, described slit is used to make the fibrous material discharger; (b) direction of rotation of a relative screen jacket is arranged at the groove in slit downstream just, and the tangent line of wherein facing the relative screen jacket of slot wedge of adjacent slots has formed an angle between 100 ° to 160 °; (c) direction of rotation of a relative screen jacket is arranged at second groove of slit upstream just, and the tangent line of wherein facing the relative screen jacket of slot wedge of slit has formed an angle between 70 ° and 110 °.This screen pipe also can comprise a feed pipe, rotatable brush roll and an impeller.The edge of groove also can be roughly linearity or curve-like.Screen pipe of the present invention can also along opposite direction in pairs the screen pipe form of location be applied in the process with dry forming manufactured Web materials.In addition, this screen pipe can be worked under the non-rotary situation of screen jacket.
Description of drawings
Fig. 1 shows the basic structure as the screen pipe of a distributor part;
Fig. 2 is the partial sectional view of the screen jacket of screen pipe;
Fig. 3 shows the partial sectional view of an embodiment of screen jacket inner surface;
Fig. 4 is the partial sectional view of another embodiment of screen jacket.
The explanation of most preferred embodiment
Term " fibrous material " is meant the fiber that meets the needs of basically.Best fiber comprises natural fiber and synthetic fibers, but cellulose fibre is better.
" slit " is meant a hole or any transfer unit on the screen jacket that is arranged on screen pipe, and fibrous material can be discharged in screen pipe by this slit.
" wire " is meant a kind of eyed structure, in case fibrous material is discharged in screen pipe, fibrous material will be deposited on this eyed structure so.Can also have on the wire and pass vacuum state wiry, be beneficial to fibrous material and be deposited on the wire.
The present invention may be better understood referring now to following description of drawings, but accompanying drawing only is used to illustrate the present invention, rather than limitation of the present invention.
Fig. 1 shows the basic structure of the distributor that includes a screen pipe 1 according to the present invention.There is shown two screen pipes 1 that stride across the horizontal expansion of a wire (not illustrating in the drawings).In Fig. 1, screen pipe 1 is provided with in pairs, so that the flow direction A of fibrous material 3 in screen pipe is opposite.This point can be achieved by by means of the feed pipe 7 that is arranged on the screen pipe opposite end fabaric mterial flow 3 being blown in the screen pipe.Feed pipe imports in the screen pipe generally along the fibrous material that axially will be under the air fluidized state.Screen jacket 2 can be arranged to can be along the direction shown in the arrow B around its axis rotation.Selectively, screen jacket 2 can be arranged to keep transfixion and fibrous material in the screen jacket can rotate along the direction shown in the arrow C.In most preferred embodiment, screen jacket 2 produces rotation along the direction shown in the arrow B, and fibrous material produces rotation along the direction shown in the arrow C.
This screen pipe also can comprise a plurality of brush roll 4 that are arranged at screen pipe inside in a conventional manner, as described in Finnish patent 66948.The purpose that brush roll is installed is to clear up screen jacket 2 surfaces of screen pipe 1 and improves fiber and pass the hole on the screen jacket 2 or the penetrability of slit.When rotation, brush roll 4 also can play the effect that active rotation is injected fibrous material in screen jacket 2.The structure of brush roll is a kind of traditional structure, and this structure is open in above-mentioned Finnish patent.
In distributor shown in Figure 1, can impeller 5 be installed in the screen pipe 1 at that end relative with the fiber input.The purpose that impeller is installed is to make the fibre stream 3 that flows in the screen pipe 1 to slow down.The fiber that flow velocity is slower especially is positioned at the fiber of the screen pipe end that includes impeller, can be by screen jacket along the whole length of screen cloth than discharging more equably in the past.This positive effect is the easiest to be observed in the screen pipe end that impeller is arranged.When screen pipe with accompanying drawing in the mode shown in the embodiment be provided with in pairs, make fibrous material in screen pipe when opposite direction flows, the impeller that is arranged in another screen pipe will make the fibre stream deceleration and can make the fibrous material layering, but also it can be deposited on other edge of the Web materials that will be made into.So just formed a kind of lateral contour than more uniform net of the past along whole width.
Fig. 2 shows the cutaway view according to the screen jacket among the embodiment that is arranged at screen pipe of the present invention.The direction of rotation of screen pipe is represented that by arrow B the direction of rotation that is arranged at the sharp roller 4 in the screen jacket 2 is represented by arrow C.As shown in the figure, the direction of arrow is opposite each other.But, be to be arranged at the direction that groove and the fibre stream that moves in the screen jacket are met in screen jacket according to the principal character of screen pipe of the present invention.For the present invention is turned round in a desired manner, before meeting with less angle and groove, fibrous material must at first run into groove with bigger angle.For this reason, the rotating speed of fibrous material in screen jacket must be less than the rotating speed of screen jacket along its direction of rotation.This point can initiatively be achieved along opposite direction rotation by making screen jacket and fibrous material.Here it is most preferred embodiment of the present invention.But the present invention has also considered only to make the embodiment of screen jacket active rotation.In this case, the fibrous material in the screen jacket will owing to and the screen jacket inner surface between the effect of frictional force under rotate slightly.But in this embodiment, screen jacket will be to be higher than the rotating speed rotation of fibrous material, so that fibrous material before running into less acute angle groove, at first runs into bigger obtuse angle groove.In addition, screen jacket and fibrous material all can be along same direction active rotation.In this embodiment, screen jacket must be to be higher than the rotating speed rotation of fibrous material.The present invention has considered that also screen jacket does not rotate, but the embodiment that the drying fiber material in the screen jacket rotates.In these embodiments, fibrous material must so that described fibrous material runs into before the less acute angle groove, at first run into bigger obtuse angle groove along a direction rotation.(promptly pass through alternate manner at fibrous material along the assigned direction active rotation, for example by the frictional force between fibrous material and the screen jacket inwall) embodiment in, all can produce this rotation and don't can make the impaired member of critical piece of the present invention all is suitable.Most preferred embodiment comprises the structure of using brush roll 4 active rotation fibrous materials.
In the present invention, the axial grooves 8 that are arranged in the screen jacket 2 of screen pipe are asymmetric, so that be positioned flow slot wedge 8a tangentially being positioned on the littler acute angle position than the relative screen jacket of upstream edge 8b of groove in direction C downstream of fibrous material.As shown in Figure 2, the tangential angle of the relative screen jacket of downstream edge 8a of type groove may preferably be about 90 °, perhaps substantially in 70 ° to 110 ° scope, and the tangential angle of the relative screen jacket of upstream edge 8b of type groove may preferably be about 130 °, or substantially in 100 ° to 160 ° scope.In most preferred embodiment, groove and slit extend with linearly aligned form along the longitudinal axis of screen jacket.The groove that the linear slot of adjacent specific is arranged is continuous each other, and is parallel to linear slit arrangement extension.In this embodiment, the groove of the linear slot of adjacent specific arrangement has formed one from the outstanding protuberance of screen jacket inwall.The groove that slit of this arrangement mode and vicinity is arranged is opposite to be discontinuous, and has mottled outward appearance; But this embodiment also falls within the scope of protection of the present invention.
With reference to Fig. 3, groove of the present invention extends with the same with slit at least degree along the longitudinal axis of screen pipe.In most preferred embodiment, groove is the whole length extension of axis longitudinally not, and slit also is like this; But the embodiment that slit and groove extend along the whole length of axis also falls within the scope of the present invention.
The asymmetric purpose of shape is to form strong small turbulent flow and good structure, promptly forms the zone of a uniform distribution fiber, and can also provide good production capacity for the dry forming method.The groove contour that forms strong small turbulent flow can prevent the generation of dusting cover phenomenon, like this, even very long fiber also can efficiently move past screen jacket.This structure is particularly useful to synthetic staple fiber, and it also is applicable to chemical paper fiber.
A plurality of holes or slit 9 are arranged at the bottom of type groove 8, and fiber can be discharged from screen pipe 1 by these holes or slit.In embodiment and most preferred embodiment shown in Figure 2, these holes or slit are of a size of 3 to 4.5mm or 1.5mm to 2mm * 30mm.These slits illustrate same cutting open on the position every a channel bottom in the drawings.The gross area of these holes or slit can produce sizable variation with the difference of the gross area of screen jacket, and this variation is generally 12% several times, for example is about 25%.The thickness of screen jacket 2 can change between 3mm and 5mm.In most preferred embodiment, screen jacket is made by stainless steel.But other embodiment comprises by other metal screen jacket.In other embodiments of the invention, also may adopt other nonmetallic materials, to bear the stress that screen pipe is produced in course of normal operation with sufficient intensity; These materials can comprise composite plastic or glass fibre.
In Fig. 2, the edge 8a of type groove and 8b illustrate with straight line substantially, but it also can be crooked, as shown in Figure 4.In this case, the tangential angle of the relative screen jacket in edge may be by a line segment decision, and this line segment is with the type groove edge of faces aperture or slit and be positioned at that the hole or slit 9 edges of the channel bottom of close above-mentioned slot wedge link together.Therefore, can according to basic design of the present invention, the groove contour shape in the present invention's the screen pipe be modified in the protection domain that does not break away from the appended claims qualification, wherein the downstream edge of groove is more more precipitous than the upstream edge of groove.
The cylindrical shape screen jacket of screen pipe is meant the general shape of screen jacket.The present invention considers screen jacket is made localized variation or surface variation, thereby slightly to be worse than accurate cylindrical standard manufacture screen jacket.
The screen jacket of any specified sieve chimney filter all only can be along a direction rotation in its conventional operating process.Its rotation direction is generally like this: the slit that the groove that tangentially has big acute angle of the path circumscribed of relative slit is positioned at have big obtuse angle and the upstream of groove.
The application also imagines the screen pipe that includes the screen jacket that can rotate along clockwise direction and includes the screen pipe of the screen jacket that can rotate in the counterclockwise direction.
Claims (16)
1. screen pipe that distributes fibrous material, it comprises: one can be around the cylindrical shape screen jacket of its longitudinal axis rotation, and the wall of described screen jacket comprises:
(a) one or more slits that pass completely through screen jacket, and fibrous material can pass described screen jacket;
(b) rotation direction of a relative screen jacket is arranged at first groove of downstream and adjacent slots, and the edge of wherein said first groove and the tangent line of screen jacket have formed an angle between 100 ° and 160 °;
(c) rotation direction of a relative screen jacket is arranged at second groove of upstream side and adjacent slots, and the edge of described second groove and the tangent line of described screen jacket have formed an angle between 70 ° and 110 °.
2. according to the screen pipe of claim 1, also comprise one or more parts of from following parts, selecting:
(a) feed pipe, fibrous material can be injected in the screen pipe by this feed pipe;
(b) rotatable brush roller on a plurality of cylinders that are fixed in screen pipe inside;
(c) impeller that is fixed on the interior cylinder of screen pipe.
3. according to the screen pipe of claim 1, it is characterized in that: the edge of type groove is roughly straight line.
4. according to the screen pipe of claim 1, it is characterized in that: the edge of type groove is crooked, and the angle of the relative screen jacket tangent line of slot wedge depends on that one connects slot wedge and the hole that is positioned channel bottom of close described slot wedge or the line segment of edges of slots.
5. device with dry forming manufactured Web materials, it comprises two described screen pipes of claim 1, it is characterized in that: described screen pipe is each other with 180 ° of relative orientations.
6. method of operating according to the screen pipe of claim 1, it is characterized in that: described screen jacket does not rotate in its operating process.
7. a screen pipe is used for distributing fibrous material from the described screen pipe that includes the cylindrical shape screen jacket, and described screen jacket comprises:
(a) one or more slits that run through screen jacket fully, and fibrous material can pass described slit;
(b) rotation direction of a relative fibrous material is arranged at first groove of upstream side and adjacent slots, has wherein formed an angle between 100 ° and 160 ° towards the edge of the groove of slit and the tangent line of screen jacket;
(c) rotation direction of a relative fibrous material is arranged at second groove of downstream and adjacent slots, has wherein formed an angle between 70 ° and 110 ° towards the edge of the groove of slit and the tangent line of described screen jacket;
(d) axis that can make fibrous material center on screen jacket produces the device of rotation.
8. according to the screen pipe of claim 7, also comprise: one or more parts of from following parts, selecting:
(a) feed pipe, fibrous material can be injected in the screen pipe by this feed pipe;
(b) rotatable brush roller on a plurality of cylinders that are fixed in screen pipe inside; And
(c) impeller that is fixed on the interior cylinder of screen pipe.
9. according to the screen pipe of claim 7, it is characterized in that: the edge of type groove is roughly straight line.
10. according to the screen pipe of claim 7, it is characterized in that: the edge of type groove is crooked, and the angle of the relative screen jacket tangent line of slot wedge depends on that one connects slot wedge and the hole that is positioned channel bottom of close described slot wedge or the line segment of edges of slots.
11. the device with dry forming manufactured Web materials, it comprises two described screen pipes of claim 7, it is characterized in that: described screen pipe is each other with 180 ° of relative orientations.
12. screen pipe with dry forming manufactured Web materials, purpose is that the fibrous material (3) that the screen jacket (2) by screen pipe is blown into screen pipe (1) is distributed to can be on the wire that moves below the screen pipe, the fibrous material that is contained in the screen pipe (1) can produce mobile down an effect that is arranged at the sharp roller (4) of screen pipe inside, thereby make the screen jacket (2) of the relative screen pipe of motion of fibrous material both comprise a radial component, comprise a tangential component again, described screen jacket comprises the type groove (8) that is provided with along the axis direction of screen pipe on the surface within it, the type groove edge (8a) that is positioned at fibre stream tangential component downstream and relative described tangential component are positioned at the upstream edge (8b) of groove with different angles, the bottom of type groove comprises porose or slit (9), fiber can be discharged from screen pipe (1) by described hole or slit (9), it is characterized in that: (8b) compares with upstream edge, and the downstream edge of type groove (8a) tangential component of fabaric mterial flow relatively becomes a bigger acute angle.
13. the screen pipe according to claim 12 is characterized in that: the tangent line angulation of downstream edge of type groove (8a) and screen jacket approximately between 70 ° and 110 °, preferably is about 90 °; The upstream edge of type groove (8b) the tangent line angulation of screen jacket relatively is about 100 ° to 160 °, preferably is about 130 °.
14. the screen pipe according to claim 12 is characterized in that: the edge of type groove is roughly straight line.
15. screen pipe according to claim 12, it is characterized in that: the edge of type groove is crooked, and the angle of the relative screen jacket tangent line of slot wedge depends on that one connects slot wedge and the hole that is positioned channel bottom of close described slot wedge or the line segment of edges of slots.
16. a screen pipe that distributes fibrous material, it comprises: one can be around the cylindrical shape screen jacket of its longitudinal axis rotation, and the wall of described screen jacket comprises:
(a) extend and pass completely through linearly aligned two or more slits of screen jacket along the longitudinal axis of screen jacket, fibrous material can pass these holes or slit;
(b) be parallel to first groove that linearly aligned slit extends, the direction of rotation of its relative screen jacket is arranged at downstream and contiguous linearly aligned slit, and the edge of wherein said first groove and the tangent line of screen jacket have formed an angle between 100 ° and 160 °; And
(c) be parallel to second groove that linearly aligned slit extends, the direction of rotation of its relative screen jacket is arranged at upstream side and adjacent slots, and the edge of wherein said second groove and the tangent line of screen jacket have formed an angle between 70 ° and 110 °.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI991203 | 1999-05-27 | ||
| FI991203A FI107818B (en) | 1999-05-27 | 1999-05-27 | Screen tube for use in dry forming of web material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1352591A true CN1352591A (en) | 2002-06-05 |
Family
ID=8554745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00808138A Pending CN1352591A (en) | 1999-05-27 | 2000-05-26 | Screen pipe for dry forming web material |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP1187708A1 (en) |
| JP (1) | JP2003521590A (en) |
| KR (1) | KR20020047039A (en) |
| CN (1) | CN1352591A (en) |
| AU (1) | AU5297600A (en) |
| BR (1) | BR0011588A (en) |
| CA (1) | CA2374914A1 (en) |
| FI (1) | FI107818B (en) |
| WO (1) | WO2000073032A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101642643B (en) * | 2009-08-22 | 2011-07-13 | 湖州德翔环境科技有限公司 | High-efficiency, convenient and fast filter for water pretreatment |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10249533A1 (en) * | 2002-10-23 | 2004-05-06 | Fleissner Gmbh & Co. Maschinenfabrik | Method for operating a device for laying a fleece according to the air laying method and device therefor |
| JP4570472B2 (en) * | 2005-01-24 | 2010-10-27 | 日本バイリーン株式会社 | Fiber distribution device and fiber distribution method |
| KR101107452B1 (en) * | 2009-11-30 | 2012-01-19 | 주식회사 화성기연 | Hanger-Type Steel Pedestal |
| JP6248616B2 (en) * | 2013-12-25 | 2017-12-20 | セイコーエプソン株式会社 | Sheet manufacturing equipment |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2931076A (en) * | 1948-11-23 | 1960-04-05 | Fibrofelt Corp | Apparatus and method for producing fibrous structures |
| US2738557A (en) * | 1952-10-24 | 1956-03-20 | Dick Co Ab | Apparatus for the air deposition of fibers in the manufacture of fibrous structures |
| US4732552A (en) * | 1984-05-21 | 1988-03-22 | Kimberly-Clark Corporation | Fiber processing apparatus having slotted outlets |
| US4640810A (en) * | 1984-06-12 | 1987-02-03 | Scan Web Of North America, Inc. | System for producing an air laid web |
| US5882372A (en) * | 1994-10-26 | 1999-03-16 | Johns Manville International, Inc. | Apparatus for use in confining a gaseous stream containing wet or sticky particles or fibers |
-
1999
- 1999-05-27 FI FI991203A patent/FI107818B/en active
-
2000
- 2000-05-26 CA CA002374914A patent/CA2374914A1/en not_active Abandoned
- 2000-05-26 EP EP00937855A patent/EP1187708A1/en not_active Withdrawn
- 2000-05-26 AU AU52976/00A patent/AU5297600A/en not_active Abandoned
- 2000-05-26 WO PCT/US2000/014631 patent/WO2000073032A1/en not_active Application Discontinuation
- 2000-05-26 BR BR0011588-6A patent/BR0011588A/en not_active Application Discontinuation
- 2000-05-26 KR KR1020017015088A patent/KR20020047039A/en not_active Application Discontinuation
- 2000-05-26 JP JP2000621128A patent/JP2003521590A/en not_active Withdrawn
- 2000-05-26 CN CN00808138A patent/CN1352591A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101642643B (en) * | 2009-08-22 | 2011-07-13 | 湖州德翔环境科技有限公司 | High-efficiency, convenient and fast filter for water pretreatment |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2003521590A (en) | 2003-07-15 |
| WO2000073032A1 (en) | 2000-12-07 |
| WO2000073032A9 (en) | 2002-04-18 |
| FI991203A (en) | 2000-11-28 |
| KR20020047039A (en) | 2002-06-21 |
| BR0011588A (en) | 2002-03-19 |
| FI991203A0 (en) | 1999-05-27 |
| AU5297600A (en) | 2000-12-18 |
| FI107818B (en) | 2001-10-15 |
| CA2374914A1 (en) | 2000-12-07 |
| EP1187708A1 (en) | 2002-03-20 |
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