EP2288749A1 - Anlage zur herstellung einer faserstoffbahn - Google Patents
Anlage zur herstellung einer faserstoffbahnInfo
- Publication number
- EP2288749A1 EP2288749A1 EP09753850A EP09753850A EP2288749A1 EP 2288749 A1 EP2288749 A1 EP 2288749A1 EP 09753850 A EP09753850 A EP 09753850A EP 09753850 A EP09753850 A EP 09753850A EP 2288749 A1 EP2288749 A1 EP 2288749A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fibrous web
- plant
- housing
- air
- web
- 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.)
- Granted
Links
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F9/00—Complete machines for making continuous webs of paper
Definitions
- the invention relates to a plant for producing a fibrous web, in particular a long fiber paper or wet nonwoven web comprising a Faserstoffsus- pendiper GmbH for producing an aqueous suspension of all components, a web forming agent for dewatering the aqueous suspension and for forming the fibrous web, which at least in sections at an angle to the horizontal slanted screen and at least one at least single-layer, preferably multi-layer headbox, a Bindersiebpartie for applying an aqueous binder on the fibrous web having at least partially horizontally or approximately horizontally extending binder wire and at least one Binder, a drying wire having a drying unit for drying and Solidification of the fibrous web and a rewinder for the continuous winding of the fibrous web on hubs to bobbins.
- a Faserstoffsus- pendiper GmbH for producing an aqueous suspension of all components
- a web forming agent for dewatering the aqueous suspension and for forming the fibrous
- Such a plant for the production of a fibrous web, in particular a long fiber or wet nonwoven web and the thus applicable methods for producing the same, the so-called wet process, have been part of the known state of the art for several decades.
- a glass fiber slurry becomes a typical white water in a pulper for dispersion by adding a glass fiber having a fiber length in the range of 6 to 40 mm, preferably 8 to 30 mm, especially 10 to 25 mm the glass fiber in the white water forming the Fiberglass slurry having a fiber concentration of about 0.2 to 1.0 percent by weight, and assigned to a white water stream.
- This fiberglass slurry is then applied and dewatered in a web former having at least one at least one layered, preferably multilayer headbox on an inclined screen extending at least in sections at an angle to the horizontal. The dewatering of the glass fiber slurry forms a fiberglass wet web.
- the fiberglass wet web formed is then transferred to an at least partially horizontally or approximately horizontally extending binder wire a Bindersiebpartie.
- at least one aqueous binder such as an aqueous urea-formaldehyde (UF) resin-based binder
- UF urea-formaldehyde
- the aqueous binder solution is preferably applied to the wet fiberglass wetlaid using a curtain coater or a swap and squeeze applicator, but other application methods such as spraying are also suitable.
- the wet and still unglued fiberglass wet web is then transferred to a drying unit having a drying wire for drying and curing (polymerization) of the binder, which glues the glass fibers together in the glass fiber nonwoven.
- the drying unit may for example have a heated continuous furnace or a drum or belt dryer, wherein the glass fiber nonwoven is usually exposed to a temperature of 100 to 250 0 C, but not more than 1 to 2 minutes.
- a surface mass range of 40 to 200 g / m 2 and a binder content of 10 to 30% having fiberglass nonwoven wound in a winder on hubs to winding rollers to then subsequent processing or processing stations can be supplied.
- the roll is also not positioned at the current production speeds of up to 350 m / min, since this is not required for these production speeds. It can be seen, however, that the fibrous web consisting of the glass fiber wet nonwoven undergoes a "troubled" run in this transfer region and thus an obstacle to a future increase in production speeds could exist.
- the invention has for its object to provide an improved suction device of the type mentioned, which avoids the disadvantages of the prior art as far as possible, preferably completely.
- the transfer of the wet and still unglued fibrous web from the Bindersiebpartie in the drying unit should be made more reliable, so that it does not adversely affect the runnability of the system and does not represent a barrier to a future increase in production speeds.
- this blowing device for the contactless floating control of the fibrous web permits a process-reliable production of a fibrous web, in particular a long fiber paper or wet nonwoven web.
- the levitation pad created by the blowing device also ensures significant stabilization of the fibrous web in this transfer area, which can ultimately have a positive effect on a possible increase in production speeds.
- blowing zones which are controllable independently of one another transversely to the running direction of the fibrous web, permit optimum and efficient operation of the blowing device across the width of the fibrous web.
- the blowing device has a housing extending at least over the width of the fibrous web, which is connected to at least one preferably controllable blower for generating a levitation cushion and which has a boundary wall whose outer wall surface serves as a guide surface for the pulp preferably curved path and having a plurality of outlet openings for the air or the other fluid medium.
- This ensures both floating and stabilized guidance of the fibrous web around the outer boundary surface of the housing.
- the targeted formation of the air cushion for example, due to the prevailing fan performance, and / or the selected curvature of the outer wall surface as a guide surface for the fibrous web can be selectively influenced on the leadership of the fibrous web.
- the outlet openings for the air or other fluid medium are preferably arranged in at least one transverse to the direction of the fibrous web series. It is particularly advantageous if the outlet openings for the air or the other fluid medium are arranged in two transverse to the direction of the fibrous web rows, wherein the first row of outlet openings in a arranged in the inlet region of the housing air duct and the second row of outlet openings is provided in a arranged in the outlet side region of the housing air duct and wherein the provided in the two air channels outlet openings are directed to the center plane of the housing.
- a cover plate is arranged in the inlet-side region of the housing and / or in the outlet-side region of the housing, which extends from the housing in the direction of the fibrous web and at a distance between 5 and 30 mm, preferably between 10 and 25 mm , ends from the fibrous web and which extends substantially over the entire width of the fibrous web.
- This ensures, among other things, that the fibrous web in a stable web run, so without flapping on the Guiding surface of the blower runs up and leaves them again so.
- the cover plate leads to a stabilization of the air flow and thus prevents fluttering of the fibrous web.
- the cover plate may be attached to the housing and / or be adjustably mounted in the direction of the fibrous web.
- the blowing device in its working position it can have an adjustment range with respect to the horizontal of +50 to -80 mm, preferably +30 to -50 mm, in particular +20 to -30 mm.
- it can be employed more or less in the course of the fibrous web to be transferred, whereby optionally a process-safe guidance of the fibrous web can be achieved.
- the levitation cushion can be produced in sufficient quantity, the blowing zones a plurality of independently controllable / adjustable having blowing means preferably an air volume flow rate in the range of 20 to 300 m 3 / min »m, preferably from 30 to 250 m 3 / min» m, in particular from 50 to 200 m 3 / min " m, and / or an air pressure in the range of 0.02 to 3.0 bar, preferably from 0.05 to 2 bar, on.
- the blowing device is preferably positionable between the working position and a rest position by means of at least one positioning device, in particular pivotally mounted by means of at least one pivoting device.
- This storage allows, as needed, good accessibility to the blowing device and its components.
- Drying unit provided blowing device preferably for a fibrous web having a width in the range of 2,000 to 6,000 mm, preferably from 3,000 to 6,000 mm, in particular from 4,500 to 6,000 mm, and for a maximum Production speed of up to 600 m / min designed. Especially in these width ranges, the process-reliable stabilization of the fibrous web is fully effective.
- FIG. 1 shows a schematic layout of a plant for producing a
- Figure 2 is a schematic side view of a blowing device according to the invention and arranged between the binder wire section and the drying unit in its working position
- Figure 3 is a schematic side view of a blowing device according to the invention and arranged between the Bindersiebpartie and the drying unit in its rest position
- FIG. 4 shows the blowing device shown in FIG. 2 and in its working position according to the detailed view X; and FIG. 5 shows the blowing device according to the view Y shown in FIG. 2 and in its working position.
- FIG. 1 shows a schematic layout of a plant 1 for producing a fibrous web 2, in particular a long fiber paper or wet nonwoven web.
- This plant 1 for the production of the fibrous web 2 comprises a fiber suspension unit 3, a web forming 4, an at least partially at an angle ⁇ to the horizontal H extending inclined wire 5 and at least one at least one layer, preferably multi-layer headbox 6, a Bindersiebpartie 7, the at least partially horizontally or approximately horizontally extending Bindersieb 8 and at least one Binder headbox 9 has a dryer unit 11 having a drying unit 10 and a rewinder 12 for continuously winding the fibrous web 2 on hubs 13 to 10 Wickerollen.
- the aqueous suspension can be, for example, a glass fiber slurry containing glass fibers with a fiber length in the range from 6 to 40 mm, preferably from 8 to 30 mm, in particular from 10 to 25 mm. and so-called white water and has a fiber concentration of about 0.2 to 1, 0 weight percent.
- the pulp suspension unit 3 is followed by the next stage of the process, namely the dewatering of the aqueous suspension and the formation of the fibrous web 2 with the aid of the inclined screen 5 arranged in the web former 4.
- the aqueous suspension is applied to the inclined screen by means of an at least single-layered, preferably multilayer headbox 6 5 applied.
- the water filtered off from the aqueous suspension below the inclined screen 5 is recirculated according to the arrow 21 and admixed, for example, with the aqueous suspension leaving the second container ("pulper") 17 of the pulp suspension unit 3.
- At least one aqueous binder such as, for example, an aqueous urea-formaldehyde (UF) resin-based binder, is applied by means of a binder casserole 9 to the still wet fibrous web 2 resting on the binder wire 8 of the binder wire section 7.
- aqueous binder can in not shown Way can also be applied using a curtain coater or a Tauschund squeeze applicator on the still-fibrous web, but other application methods such as spraying are suitable.
- the next stage of the process is used to dry and solidify the still wet fibrous web 2 by curing (polymerization) of the binder, which glues the glass fibers together in the glass fiber fleece.
- the drying wire 10 having the drying unit 10, which has two heated and illustrated continuous furnaces 22 or a drum or belt dryer, not shown.
- the fibrous web 2 is in this case usually exposed to a temperature of 100 to 250 0 C, but not longer than 1 to 2 minutes.
- the fibrous web having a basis weight range of 40 to 200 g / m 2 and binder content of 10 to 30% is wound in the reel-up 12 onto winding cores 14 to form winding rolls 13, to be fed to subsequent processing stations can.
- an adjustable blowing device 23 for contactless floating control of the fibrous web 2 by means of air 24 or another fluid medium 25 is now provided, which is independent of the direction L (arrow) of the fibrous web 2 transversely from each other controllable blowing zones 26.1 to 26.5 (see Figure 5).
- FIG. 2 now shows a schematic side view of the blowing device 23 arranged between the binder wire section 7 and the drying unit 10 in its working position A, while FIG. 3 shows the blowing device 23 in its rest position R.
- the positioning of the blowing device 23 between the working position A and a rest position R is carried out by means of at least one positioning Device 27.
- the positioning device 27 embodied as a swiveling device 28 is here articulated both on the drying unit 10 and on the blower device 23 having a housing 30.
- Such a pivoting device 28 is well known to those skilled in the art and includes, for example, a hydraulic or pneumatic swing cylinder 29.
- the fibrous web 2 has a web running direction L (arrow) and the binder wire section 7 comprises a binder wire 8, whereas the drying unit 10 comprises a drying wire 11.
- FIG. 4 shows the blowing device 23 shown in FIG. 2 and located in its working position A in accordance with the detailed illustration X.
- the blowing device 23 has a housing 30 which extends at least over the width B (arrow) of the fibrous web 2 and which is connected to at least one preferably controllable blower 31 (arrow illustration) for producing a floating pad 32. It also has a boundary wall 33, the outer wall surface 34 is curved as a guide surface 35 for the fibrous web 2 and a plurality of outlet openings 36 for the air 24 or the other flowable medium 25 has.
- the outlet openings 36 may be performed in a known manner as a simple holes, but they can also be provided with nozzle inserts.
- the outlet openings 36 for the air 24 or the other fluid medium 25 are arranged in two transverse to the direction L (arrow) of the fibrous web 2 extending row R1, R2.
- the first row R1 at outlet openings 36 is provided in an air duct 38 arranged in the inlet-side area 37 of the housing 30, and the second row R2 at outlet openings 36 is provided in an air duct 40 arranged in the outlet-side area 39 of the housing 30.
- the provided in the two air channels 38, 40 access openings 36 are directed to the center plane M of the housing 30 out.
- a cover plate 41 is arranged both in the inlet-side region 37 of the housing 30 and in the outlet-side region 39 of the housing 30, which extends from the housing 40 in the direction of the fibrous web 2 and at a distance a between 5 and 30 mm, preferably between 10 and 25 mm, ends of the fibrous web 2 and which extends substantially over the entire width B (arrow) of the fibrous web 2.
- the single cover plate 41 is fixed to the housing 30 and mounted adjustable in the direction of the fibrous web 2. The respective displacement is indicated by a double arrow.
- the blowing device 23 has an adjustment range S with respect to the horizontal h of +50 to -80 mm, preferably of +30 to -50 mm, in particular of +20 to -30 mm.
- the blowing device 23 can be set more or less in the course of the fibrous web 2 to be transferred, as a result of which process-reliable guidance of the fibrous web 2 can optionally be achieved.
- the blower several independently controllable / regulatable blowing zones 23 having 1.26 to 5.26 has an air volume flow rate V (arrow) in the range of 20 to 300 m 3 / min »m, preferably from 30 to 250 m 3 / min » m, in particular from 50 to 200 m 3 / min » m, and an air pressure p in the range of 0.02 to 3.0 bar, preferably from 0.05 to 2 bar, on.
- FIG. 5 shows the blowing device 23 shown in FIG. 2 and located in its working position A according to the view Y.
- the five independently controllable blowing zones 26.1 to 26.5 having blowing device 23 is for a fibrous web 2 with a width B in the range of 2,000 to 6,000 mm, preferably from 3,000 to 6,000 mm, in particular from 4,500 to 6,000 mm, and a maximum production speed v (arrow) of up to 600 m / min designed.
- Both the air volume throughput V (arrow) and the air pressure p in the individual independent blowing zones 26.1 to 26.5 can be controlled by suitable devices 42 known to the person skilled in the art and thus merely indicated.
- the plant 1 shown in Figures 1 to 5 is particularly suitable for producing a long fiber paper or wet nonwoven web.
- the respective web may have a basis weight range of 40 to 200 g / m 2 , respective fiber lengths in the range of 6 to 40 mm, preferably 8 to 30 mm, in particular 10 to 25 mm, and a binder content of 10 to 30%.
- the invention provides an improved suction device of the type mentioned in the introduction, which avoids the disadvantages of the prior art as far as possible, preferably entirely.
- the transfer of the wet and still unglued fibrous web from the Bindersiebpartie is designed to process more reliable in the drying unit so that it does not adversely affect the runnability of the system and does not represent a barrier to a future increase in production speeds.
- a working position a distance
Landscapes
- Paper (AREA)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008002087A DE102008002087A1 (de) | 2008-05-29 | 2008-05-29 | Anlage zur Herstellung einer Faserstoffbahn |
PCT/EP2009/056289 WO2009144195A1 (de) | 2008-05-29 | 2009-05-25 | Anlage zur herstellung einer faserstoffbahn |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2288749A1 true EP2288749A1 (de) | 2011-03-02 |
EP2288749B1 EP2288749B1 (de) | 2011-11-30 |
Family
ID=40912028
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09753850A Not-in-force EP2288749B1 (de) | 2008-05-29 | 2009-05-25 | Anlage zur herstellung einer faserstoffbahn |
Country Status (6)
Country | Link |
---|---|
US (1) | US8152968B2 (de) |
EP (1) | EP2288749B1 (de) |
CN (1) | CN102046879B (de) |
AT (1) | ATE535643T1 (de) |
DE (1) | DE102008002087A1 (de) |
WO (1) | WO2009144195A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008002087A1 (de) * | 2008-05-29 | 2009-12-03 | Voith Patent Gmbh | Anlage zur Herstellung einer Faserstoffbahn |
KR101472177B1 (ko) * | 2012-04-10 | 2014-12-12 | (주)엘지하우시스 | 장섬유를 이용한 단열재 제조 방법 |
DE102015001008A1 (de) | 2015-01-28 | 2016-07-28 | Andritz Küsters Gmbh | Verfahren und Vorrichtung zur Herstellung von nassgelegten Vliesstoffen |
DE102015005384A1 (de) | 2015-04-28 | 2016-11-03 | Andritz Küsters Gmbh | Verfahren und Vorrichtung zur Herstellung von nassgelegten Vliesstoffen |
DE102019127670A1 (de) * | 2019-10-15 | 2021-04-15 | Voith Patent Gmbh | Verfahren zur Herstellung von Faserstoffbahn-Fertigrollen |
DE102022123265A1 (de) | 2022-09-13 | 2024-03-14 | Voith Patent Gmbh | Anlage zur Herstellung einer Faserstoffbahn |
Family Cites Families (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2913365A (en) * | 1954-12-01 | 1959-11-17 | C H Dexter & Sons Inc | Fibrous webs and method and apparatus for making same |
US3052295A (en) * | 1957-06-21 | 1962-09-04 | Riegel Paper Corp | Method and apparatus for making synthetic fiber paper |
US3785922A (en) * | 1970-05-27 | 1974-01-15 | Sandy Hill Corp | Inclined former |
DE2306143C3 (de) * | 1973-02-08 | 1985-08-08 | Glaswerk Schuller Gmbh, 6980 Wertheim | Vorrichtung zur Herstellung eines Vlieses aus einer Aufschwemmung von künstlichen Fasern, insbesondere Glasfasern |
US3898123A (en) * | 1973-09-06 | 1975-08-05 | Johnson & Johnson | Method for wet print-bonding light-weight wet-formed fibrous webs |
US4294655A (en) * | 1978-03-15 | 1981-10-13 | Consolidated Fiberglass Products Company | Method and apparatus for forming fiberglass mats |
SU1714006A1 (ru) * | 1989-10-03 | 1992-02-23 | Bykov Valerij A | Способ изготовлени композиционного холста |
IT1287629B1 (it) * | 1996-03-06 | 1998-08-06 | Universal Filter Spa | Processo per la fabbricazione di un mezzo filtrante, mezzo cosi' fabbricato, e filtri impieganti detto mezzo |
US6066235A (en) * | 1998-04-03 | 2000-05-23 | E. I. Du Pont De Nemours And Company | Wetlay process for manufacture of highly-oriented fibrous mats |
WO1999064676A1 (en) * | 1998-06-10 | 1999-12-16 | Bba Nonwovens Simpsonville, Inc. | High efficiency thermally bonded wet laid milk filter |
US6497787B1 (en) * | 2000-04-18 | 2002-12-24 | Owens-Corning Veil Netherlands B.V. | Process of manufacturing a wet-laid veil |
US20020148776A1 (en) * | 2001-01-30 | 2002-10-17 | Frank Cousart | Water filtration media and methods of making same |
US6749720B2 (en) * | 2001-03-21 | 2004-06-15 | Owens Corning Fiberglas Technology, Inc. | Wet-formed mat applications for cement backerboards |
US6936137B2 (en) * | 2001-10-24 | 2005-08-30 | Honeywell International Inc. | Air clamp stabilizer for continuous web materials |
EP1346964A3 (de) * | 2002-03-21 | 2006-01-04 | Owens Corning | Nassgeformte Matte für Zementrückplatte |
FR2849655B1 (fr) * | 2003-01-08 | 2005-02-11 | Saint Gobain Vetrotex | Fabrication d'un voile en fibres de verre et de cellulose en milieu cationique |
US20080014814A1 (en) * | 2006-07-13 | 2008-01-17 | Geel Paul A | Highly filled fibrous veil |
WO2006007168A1 (en) * | 2004-06-18 | 2006-01-19 | Owens Corning | Fibrous veil impregnated with surface finish formulation |
US7597779B2 (en) * | 2005-05-09 | 2009-10-06 | Building Materials Investment Corporation | Shake mechanism for glass mat production line |
US7311234B2 (en) * | 2005-06-06 | 2007-12-25 | The Procter & Gamble Company | Vectored air web handling apparatus |
US20070012414A1 (en) * | 2005-07-12 | 2007-01-18 | Kajander Richard E | Multilayer nonwoven fibrous mats with good hiding properties, laminates and method |
US20070039703A1 (en) * | 2005-08-19 | 2007-02-22 | Lee Jerry H | Wet formed mat having improved hot wet tensile strengths |
US20070197114A1 (en) * | 2006-02-23 | 2007-08-23 | Grove Dale A | Wear resistant coating composition for a veil product |
DE102008002087A1 (de) * | 2008-05-29 | 2009-12-03 | Voith Patent Gmbh | Anlage zur Herstellung einer Faserstoffbahn |
US8083896B2 (en) * | 2008-09-26 | 2011-12-27 | Honeywell Asca Inc. | Pressure equalizing baffle and coanda air clamp |
-
2008
- 2008-05-29 DE DE102008002087A patent/DE102008002087A1/de not_active Withdrawn
-
2009
- 2009-05-25 EP EP09753850A patent/EP2288749B1/de not_active Not-in-force
- 2009-05-25 WO PCT/EP2009/056289 patent/WO2009144195A1/de active Application Filing
- 2009-05-25 AT AT09753850T patent/ATE535643T1/de active
- 2009-05-25 CN CN2009801198252A patent/CN102046879B/zh not_active Expired - Fee Related
-
2010
- 2010-08-30 US US12/871,255 patent/US8152968B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2009144195A1 * |
Also Published As
Publication number | Publication date |
---|---|
US20110005699A1 (en) | 2011-01-13 |
CN102046879B (zh) | 2013-03-27 |
WO2009144195A1 (de) | 2009-12-03 |
DE102008002087A1 (de) | 2009-12-03 |
ATE535643T1 (de) | 2011-12-15 |
US8152968B2 (en) | 2012-04-10 |
EP2288749B1 (de) | 2011-11-30 |
CN102046879A (zh) | 2011-05-04 |
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