EP0032772B1 - Apparatus for dry forming of paper or other sheet material of particles or fibres - Google Patents

Apparatus for dry forming of paper or other sheet material of particles or fibres Download PDF

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Publication number
EP0032772B1
EP0032772B1 EP81200058A EP81200058A EP0032772B1 EP 0032772 B1 EP0032772 B1 EP 0032772B1 EP 81200058 A EP81200058 A EP 81200058A EP 81200058 A EP81200058 A EP 81200058A EP 0032772 B1 EP0032772 B1 EP 0032772B1
Authority
EP
European Patent Office
Prior art keywords
pipe
web
screen
screen pipe
air
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.)
Expired
Application number
EP81200058A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0032772A1 (en
Inventor
Edmond Möller Jacobsen
Otto Viggo Nielsen
Torsten Bengt Persson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Scanweb IS
Original Assignee
Scanweb IS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from US06/132,131 external-priority patent/US4352649A/en
Application filed by Scanweb IS filed Critical Scanweb IS
Priority to AT81200058T priority Critical patent/ATE4232T1/de
Publication of EP0032772A1 publication Critical patent/EP0032772A1/en
Application granted granted Critical
Publication of EP0032772B1 publication Critical patent/EP0032772B1/en
Expired legal-status Critical Current

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Classifications

    • 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
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
    • 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
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/04—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres having existing or potential cohesive properties, e.g. natural fibres, prestretched or fibrillated artificial fibres
    • 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
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/425—Cellulose series
    • 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
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
    • D04H1/732—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by fluid current, e.g. air-lay
    • 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 present invention relates to a system for dry forming of paper or other sheet materials of particles or fibres and of the kind specified in the introductory clause of claim 1.
  • a system of this kind is known from the document US-A No. 4157724, in which the distributor unit comprises an upwardly open container having lower-side wall portions of a classification screen material which enables the fibre material in the container to be gradually let out through these wall portions, the outlet material then being moved down to the top surface of the moving, foraminous forming web by the downwardly directed air flow as caused by the suction means underneath the forming web.
  • the distributor container is mounted a row of impellers, the rotating wings of which serve to whip the fibre material in a recirculating flow, one way along one side of the container and the opposite way along the opposite side.
  • the impeller wings also impart to the material flow a movement component outwardly towards the insides of the screen walls, whereby the material flow is generally held against the respective walls, even through these project in a straight manner across the forming web, and by the same action the material output through the screen walls is generally promoted such that a high distributing capacity is achieved.
  • the said recirculation of the material in the container is highly advantageous partly as a means for providing an even distribution of the material inside the container, even if new material is supplied at one place only, and partly because the material flow as generally passing across the forming web will prevent the formation of stripes in the fibre web as deposited on the moving forming web; in other known systems, in which the material in the container is not moved crosswise of the forming web, fibre lumps in the material or other local irregularities may give rise to stripe formation, because they form local obstructions to a free fibre outlet and assume stationary positions as seen in the transverse direction of the fibre web being formed.
  • the outlet wall portion forms at least a part of a pipe which is used for guiding the flow of material along the respective length or partial length of the recirculation path, the latter preferably being housed entirely within a closed pipe circuit.
  • the technical main effect of the invention is that the recirculation flow of the material may be supported or maintained merely by way of transportation air through the said pipe, because there is no longer any need to arrange for the material flow to be held monolaterally against a guiding wall.
  • the flow will be effectively confined by the pipe, and basically the recirculation movement as such will then be produceable by simple blower means in a very economical manner.
  • a further adjustable parameter will be the general internal pressure of the pipe system.
  • the screen wall portions of the pipes crossing the forming web are extended to simply constitute the pipes entirely, i.e. all the way round, and these pipes or pipe portions are arranged so as to be rotating during the operation.
  • the fibres will leave the pipe through the lower portion thereof, and a tendency will exist to fibres sticking to the edge portions of the perforations, whereby the free area thereof may become reduced.
  • the same perforations will soon be located adjacent the top side of the pipe, and here the downwardly directed air flow will penetrate the perforations with opposite relative direction, whereby the perforations will be cleaned in a successive manner.
  • Topwise of the pipe may even be arranged for special cleaning means such as air nozzles blowing compressed air against a restricted area of the outside of the pipe, whereby the perforations and the outside of the pipe may be cleaned most effectively.
  • the system shown in fig. 1-3 comprises a foraminous forming web 2 which is moved continually through a closed path (not shown in full) so as to pass underneath a distributor unit 4. Underneath this unit and the web 2 is mounted a suction box 6 having an exhaust pipe 8 connected to a suitable suction blower.
  • the distributor unit 4 comprises an outer housing 10, which is open downwardly towards the web 2, and two horizontal pipes 12 extending through the housing across the web, these pipes being made of classification screen material, i.e. a net material or perforated sheet material.
  • the end portions of the pipes 12 are supported by rotation bearings 16 mounted in the opposed end walls 14 of the housing 10, and outside the walls 14 the respective pipe ends are interconnected through exterior, stationary U-pipes 18 and 20, of which the U-pipe 20 is provided with a tangential inlet pipe 22 projecting in line with one of the pipes 12.
  • the end portions of the pipes 12 are provided with non-perforated sleeves 24 cooperating with the bearings 16 and received in a sealed, rotary manner in or by the ends of the U-pipes 18 and 20.
  • the top side of the housing 10 is provided with slot openings 30, which may be width-adjustable by means of valve plates 32.
  • the system already as described so far may be operative in the manner that a flow of air-fluidized fibre material is supplied through the tangential inlet pipe 22 from a blower (not shown), whereby is created a recirculating material flow in the pipe system 12, 18, 20. From this flow individual fibres will be let out through the screen pipe walls together with the surplus of transportation air as supplied through the inlet pipe 22. From the suction box 6 air is sucked down through the foraminous forming web 2 and down through the housing 10 from the upper slots 30. This generally vertical air flow will pass both across the screen pipes and along the outsides thereof, thus promoting the outlet of fibres from the pipes and conveying the outlet material down to be deposited on the forming web 2.
  • the cleaning of the perforations and the outside of the screen pipes 12 may be substantially amplified by means of additional exterior cleaning means such as a rotary brush or-as shown in fig. 2-a nozzle system 44 on a pipe 46 connected to a source of compressed air, whereby air jets are blown against the outside of the pipes 12 either continually or intermittently.
  • additional exterior cleaning means such as a rotary brush or-as shown in fig. 2-a nozzle system 44 on a pipe 46 connected to a source of compressed air, whereby air jets are blown against the outside of the pipes 12 either continually or intermittently.
  • each pipe 12 is arranged an axially oriented agitation cylinder 34 provided with radial agitation needles 36 all along the length thereof, the cylinders having shaft portions 38 mounted in bearings 40, these shafts at least at one end being extended outwardly and provided with pulleys 42 or similar means enabling the cylinders 34 to be rotated relatively fast by suitable driving means (not shown).
  • the external diameter of the needle cylinders 34, 36 is pronouncedly smaller than the internal diameter of the pipes 12, and the cylinders are mounted eccentrically such that the needles 36 sweep closely over the lower inside portion of the screen pipe 12.
  • the needle tips will brush off any possible fibre collections at the inside of the pipe, and moreover the needles will show a pronounced disintegrating effect on the material, should the same contain fibre lumps.
  • needles 36 will act to directly throw material out through the screen, such that a very high outlet capacity can be achieved.
  • the needles 36 are mounted on the cylinder with small mutual distance along a screw line on the surface thereof, and during their rapid rotation the needles will thus act as a conveyor worm, which will promote the general material flow through the pipe 12.
  • the recirculation flow may well be produced by conventional blower means, e.g. axial blower wings mounted direct on the cylinders near the ends thereof.
  • Another possibility is to cause transportation air to be injected into the system through nozzles located inside the U-pipes 18 and/or 20.
  • the cylinders 34 it seems to be fully sufficient to use the cylinders 34 for this purpose, when the needles 36 are arranged along a screw line.
  • the needles or some of them may be shaped slightly propeller-formed for extra contribution to the main flow.
  • a stationary shield plate 48 supported endwise by means of brackets (not shown) inside the U-pipes 18 and 20. This plate serves to limit the direct downflow of air through the screen pipes to the forming web 2, as it may be desirable to effect an increase of the air flow down along the outsides of the screen pipes. However, air from above can still enter the screen pipes through the side portions thereof.
  • the needle cylinders 34, 36 shows a remarkable disintegration effect on fibre I umps, perhaps d ue to its eccentric location in the pipe 12, and in an extreme case it could be possible to supply the material to the pipe system solely as fibre lump material, e.g. injected through a top or inner side opening in one of the U-pipes 18, 20.
  • the supply pipe 22 may then be avoided or used solely for supply of extra air.
  • the flow and pressure conditions inside the pipes 12 will vary somewhat along the length thereof, and if necessary it will be possible to cause some differentiation of these conditions, e.g. by arranging for the top shield plate 48 to be axially inclined or to have varying width along the pipe.
  • the screw line of the needles 36 along the cylinder 34 may show a non-constant pitch, and the degreee of perforation of the screen pipes may be graduated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Paper (AREA)
EP81200058A 1980-01-18 1981-01-16 Apparatus for dry forming of paper or other sheet material of particles or fibres Expired EP0032772B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81200058T ATE4232T1 (de) 1980-01-18 1981-01-16 Vorrichtung zum trockenbilden von papier oder eines anderen bahnmaterials aus teilchen oder fasern.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB8001682 1980-01-18
GB8001682 1980-01-18
US06/132,131 US4352649A (en) 1980-03-20 1980-03-20 Apparatus for producing a non-woven web from particles and/or fibers
US132131 1980-03-20

Publications (2)

Publication Number Publication Date
EP0032772A1 EP0032772A1 (en) 1981-07-29
EP0032772B1 true EP0032772B1 (en) 1983-07-20

Family

ID=26274189

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81200058A Expired EP0032772B1 (en) 1980-01-18 1981-01-16 Apparatus for dry forming of paper or other sheet material of particles or fibres

Country Status (8)

Country Link
EP (1) EP0032772B1 (fi)
JP (1) JPH0322281B2 (fi)
AU (1) AU547989B2 (fi)
BR (1) BR8106032A (fi)
DE (1) DE3160607D1 (fi)
FI (1) FI66948C (fi)
SU (1) SU1405709A3 (fi)
WO (1) WO1981002031A1 (fi)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE450256B (sv) * 1983-12-23 1987-06-15 Svenska Traeforskningsinst Sett och anordning for framstellning av skikt av torra fibrer pa en formyta
DE3561337D1 (en) * 1984-04-27 1988-02-11 Mira Lanza Spa Apparatus for uniformly distributing a disintegrated fibrous material on a fiber layer forming surface in plants for the dry forming of paper
US4640810A (en) * 1984-06-12 1987-02-03 Scan Web Of North America, Inc. System for producing an air laid web
DK151482C (da) * 1985-08-30 1988-05-24 Scan Web Fordelerenhed til toerudlaegning af fibre, fortrinsvis til toerfremstilling af papir
FI81642C (fi) * 1988-05-20 1990-11-12 Yhyneet Paperitehtaat Oy Walki Matarsystem foer en former vid en torrpappersmaskin.
FI83352C (fi) * 1988-05-20 1991-06-25 Yhtyneet Paperitehtaat Oy Foerfarande och anordning foer formande av en torraemnesbana pao en vira.
FI94967C (fi) * 1991-09-18 1995-11-27 Yhtyneet Paperitehtaat Oy Menetelmä ja laite aineradan kuivamuodostukseen pitkäkuituisesta materiaalista
FI105837B (fi) * 1999-04-09 2000-10-13 Bki Holding Corp Jakeluyksikkö käytettäväksi rainamateriaalin kuivamuodostuksessa
US6726461B2 (en) 1999-05-27 2004-04-27 Bki Holding Corporation Screen pipe for dry forming web material
AU776034B2 (en) * 2000-01-28 2004-08-26 Scan-Web I/S Apparatus for dry-distributing of fibrous materials
DK1444398T3 (da) * 2001-08-20 2006-10-16 Dan Web Holding As Höjhastighedsformerhoved
US6709613B2 (en) 2001-12-21 2004-03-23 Kimberly-Clark Worldwide, Inc. Particulate addition method and apparatus
US7487573B2 (en) 2002-10-15 2009-02-10 A Celli Nonwovens S.P.A. Device for dry forming a web of fibers
DE10249533A1 (de) * 2002-10-23 2004-05-06 Fleissner Gmbh & Co. Maschinenfabrik Verfahren zum Betreiben einer Vorrichtung zum Legen eines Vlieses nach dem Luftlegeverfahren und Vorrichtung dazu
ATE391800T1 (de) * 2003-10-17 2008-04-15 Reifenhaeuser Gmbh & Co Kg Faserlaminat und verfahren zur herstellung eines faserlaminates
DK175987B1 (da) * 2004-08-05 2005-10-31 Dan Core Internat A S Formerhoved med roterende tromle
JP6248616B2 (ja) * 2013-12-25 2017-12-20 セイコーエプソン株式会社 シート製造装置
CN103741376A (zh) * 2014-01-10 2014-04-23 江苏省仪征市海润纺织机械有限公司 气流垂直崭叠铺网机
JP6492576B2 (ja) * 2014-11-26 2019-04-03 セイコーエプソン株式会社 シート製造装置
DE102022118800A1 (de) 2022-07-27 2024-02-01 Voith Patent Gmbh Verfahren und Vorrichtung zur Herstellung einer Fasermatte

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2305537A1 (fr) * 1973-11-12 1976-10-22 Riegel Textile Corp Appareil de defibrage et de production de tampons absorbants

Family Cites Families (12)

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Publication number Priority date Publication date Assignee Title
US2489079A (en) * 1946-04-18 1949-11-22 Paper Chemistry Inst Apparatus for forming fibrous sheets or paperboard
GB668216A (en) * 1949-11-07 1952-03-12 Dick Co Ab Improvements in or relating to the production of fibrous structures and apparatus therefor
US2940133A (en) * 1950-04-14 1960-06-14 Weyerhaeuser Co Continuous deposition of dry felted structures
US2940134A (en) * 1950-09-02 1960-06-14 Weyerhaeuser Co Dry felting apparatus and process
US2743758A (en) * 1950-11-13 1956-05-01 Cascades Plywood Corp Fiber mat forming apparatus and methods
US2738557A (en) * 1952-10-24 1956-03-20 Dick Co Ab Apparatus for the air deposition of fibers in the manufacture of fibrous structures
LU43175A1 (fi) * 1962-09-01 1963-04-11
SE357399B (fi) * 1967-01-06 1973-06-25 K Kroeyer
US3482287A (en) * 1967-10-10 1969-12-09 Domtar Ltd Method and apparatus for individualizing fibers preparatory to web forming
JPS5030752B2 (fi) * 1971-12-29 1975-10-03
GB1497808A (en) * 1975-05-29 1978-01-12 Kroyer St Annes Ltd Karl Apparatus for dry forming a layer of fibre
US4051576A (en) * 1975-12-18 1977-10-04 Sergei Vyacheslavovich Baburin Apparatus for aerodynamically forming a fibrous sheet material

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2305537A1 (fr) * 1973-11-12 1976-10-22 Riegel Textile Corp Appareil de defibrage et de production de tampons absorbants

Also Published As

Publication number Publication date
FI66948B (fi) 1984-08-31
FI66948C (fi) 1984-12-10
JPH0322281B2 (fi) 1991-03-26
SU1405709A3 (ru) 1988-06-23
WO1981002031A1 (en) 1981-07-23
FI812929L (fi) 1981-09-18
EP0032772A1 (en) 1981-07-29
AU547989B2 (en) 1985-11-14
BR8106032A (pt) 1981-11-24
DE3160607D1 (en) 1983-08-25
AU6774981A (en) 1981-08-07
JPS57500059A (fi) 1982-01-14

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