EP1277867A1 - Procédé et dispositif pour la fabrication de non-tissés du type spunbonded - Google Patents

Procédé et dispositif pour la fabrication de non-tissés du type spunbonded Download PDF

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Publication number
EP1277867A1
EP1277867A1 EP02008606A EP02008606A EP1277867A1 EP 1277867 A1 EP1277867 A1 EP 1277867A1 EP 02008606 A EP02008606 A EP 02008606A EP 02008606 A EP02008606 A EP 02008606A EP 1277867 A1 EP1277867 A1 EP 1277867A1
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EP
European Patent Office
Prior art keywords
air
nozzles
blow
fibers
spinning
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.)
Withdrawn
Application number
EP02008606A
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German (de)
English (en)
Inventor
Engelbert Löcher
Michael Hess
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.)
Carl Freudenberg KG
Original Assignee
Carl Freudenberg KG
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 DE10133790A external-priority patent/DE10133790B4/de
Application filed by Carl Freudenberg KG filed Critical Carl Freudenberg KG
Publication of EP1277867A1 publication Critical patent/EP1277867A1/fr
Withdrawn legal-status Critical Current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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/16—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/08—Melt spinning methods
    • D01D5/098—Melt spinning methods with simultaneous stretching
    • D01D5/0985—Melt spinning methods with simultaneous stretching by means of a flowing gas (e.g. melt-blowing)

Definitions

  • spunbonded nonwovens suitable devices
  • starting materials are thermoplastic polymers used that melted to fine Spun threads are spun.
  • the spun threads are mostly stretched aerodynamically and thereby obtain the desired strength.
  • the threads are deposited after the spinning process or under Interposition of coils on a storage belt on which they come to lie on top of each other and form the spunbond.
  • the spinning process can also be carried out using the meltblown process, in which the melt emerging from the spinnerets from a high flow air stream Pressure and high temperature is carried away, so that fibers with low Thickness arise. These fibers can also be laid down to form a fleece what is mainly done on storage drums.
  • DE-AS 1 303 569 describes a process for producing nonwovens known in which the spun threads are guided through a channel be stretched aerodynamically there and then on one perforated, moving pad in fleece form.
  • a turbulence zone is provided below the air duct Cross-threading supported. The result is a very irregular one Fleece image.
  • a high uniformity of the spunbond is achieved that several guide channels are provided in succession and the resulting channels protruding layers of thread in layers one above the other to form a fleece be filed.
  • the spinning beam together with the thread take-off device rotatable train should also eliminate the disadvantages that the So-called curtain procedures occur and in certain areas can lead to overlays of individual filaments.
  • the nonwoven has a preferred strength in Longitudinal direction, i.e. in the direction of production, while the strength values in Transverse direction are lower. Due to the inclination of the spinning beam together with the laying and stretching device, this should be compensated.
  • the invention has for its object a method with associated Device for producing a spunbonded nonwoven with one very high uniformity of the fleece structure and basis weight distribution can be achieved.
  • the Strength in the transverse direction should, for example, be the same as the strength be in the longitudinal direction.
  • the one emerging from the stretching channel or a bobbin pulled thread group or are in the Meltblown process spun fibers using an air stream periodically changing directions laterally moved laterally, the Air flow seen in a horizontal plane at an angle to the thread sheet or alternately aligned with the fibers.
  • Separate Air blasts in changing directions cause the thread coulter or fibers moved back and forth across the production direction becomes what leads to the desired fleece structure, for example a high one Uniformity in structure.
  • the air flows can be carried out alternately from left and right. It turned out to be favorable if between the individual air flows Air breaks are inserted, where there is no air blast and the one between the air blasts a vertical alignment of the thread sheet or Allow fibers.
  • the general direction of air flow is perpendicular to the Thread group or fibers directed.
  • Other discharge angles are different Need of course possible.
  • the blow-out direction in is also possible vertical plane obliquely down on the thread sheet or fibers align.
  • the discharge angle in the vertical plane can be 15 °.
  • the device for performing the method consists of a Spinning beams with a large number of spinning capillaries lying in a row with a cooling air shaft and stretching duct and a storage belt.
  • a Spinning beams with a large number of spinning capillaries lying in a row with a cooling air shaft and stretching duct and a storage belt.
  • the invention is below and below the stretching channel and / or at least one blow duct arranged behind the thread sheet with in horizontal plane seen obliquely to the thread sheet Air outlet nozzles.
  • the blown Air has a cooling effect on the fibers, which is beneficial affects the spinning process.
  • the air outlet nozzles are arranged so that they alternately blow an air stream in different directions can be seen from the left or on the thread sheet or fibers right.
  • the nozzles one row is oriented opposite to the nozzles of the other row are.
  • the air is supplied to the nozzles one after the other, so that once Nozzles to the left and once the nozzles to the right with the air are acted upon.
  • the air supply to the nozzles becomes one Row completed with a clasp.
  • Nozzles themselves with closures and the nozzles each one Complete row and open the other row.
  • a rotatable roller can be provided to close off the nozzles, which is hollow and provided with longitudinal slots.
  • the nozzles can be at an angle to their through corrugated sheet-like inserts Longitudinally extending corrugations are formed in the nozzle wall are inserted. They are preferably interchangeable, so that through them volume flow passing through or also the flow direction or whose angle can be easily changed.
  • the nozzle wall is provided with longitudinal slots lying one above the other correspond to the longitudinal slots in the roller.
  • a special one favorable embodiment provides the arrangement of an air storage space in Blow duct in front, between the nozzle wall and one on the roller lying sealing wall is arranged. This will make it a very even one Actuation of the nozzles reached.
  • the air storage space is divided into two chambers by an intermediate plate, which the respective upper and lower longitudinal slots of the sealing wall and are assigned to the upper and lower nozzles in the nozzle wall.
  • the roller in turn is in a longitudinal channel filled with compressed air arranged, which is connected to a compressed air reservoir.
  • the rotating roller has the advantage that even with larger ones Production widths a uniform pressure at the nozzles over the entire Production range is pending.
  • blow-out angles of the nozzles of both rows of nozzles are preferably the same, which results in a bunch of threads or fibers in both directions same interpretation is achieved.
  • the blow-out angles are 10 to 60 °, preferably 45 °.
  • an adjustable mechanical air duct to control the Direction of air flow may be provided below the Blasschachtes.
  • This air flow can pivoting wing flaps or Coanda shells, through which the thread sheet moves back and forth in the production direction can be.
  • the preferred embodiment provides opposite the blow shaft on the other front of the thread sheet or Fibers to attach an air baffle adjustable in the direction of the blow chute.
  • an air baffle adjustable in the direction of the blow chute.
  • FIG. 1 In Fig. 1, four individual steps A, B, C and D of the Procedure using the example of a thread group consisting of endless threads shown.
  • the front walls are one Blow duct 3 illustrated.
  • an air baffle is designated.
  • the Points 4 are intended to represent the individual threads of the thread family.
  • arrow 5 shows the direction of movement of the storage belt.
  • the curved arrows 6 and 7 indicate the direction of flow of the air flow again.
  • the thread group is made up of the Threads 4 seen from their direction of production once to the right, see Step B, and once to the left, see Step D, moved. Between these Movements, the air flow is stopped, so that the thread coulter itself can align vertically, as shown in steps A and C. From the Blasschacht 3, which is seen in the production direction on the back of the Threads are located periodically from the nozzles provided once the air to the right, see step B, and once the air to the left, see step D, blown out. Located on the front of the thread family the air baffle 2, which is provided with an adjustment mechanism and the distance from the blow chute 3 is adjustable.
  • the deposition of a single thread 4 is shown schematically at the bottom of the figure and it can be seen that the thread 4 is a when it is deposited Movement that results in the shape of an eight on the shelf.
  • Fig. 2 is the blow duct 3 with the one above the other in rows Air outlet nozzles 10 and 11 shown.
  • the from the stretching channel 12 emerging thread sheet 8 is through the emerging from the nozzles 10 Airflow initially deflected to the right, which is due to the extended Dashes of the thread group 8 is shown.
  • the thread coulter 8 is again aligned vertically and is in the further Step through the air flow from the air outlet nozzles 11 into the opposite direction, what with the dotted lines of the Thread cluster 8 is displayed. It should be noted that this representation only schematically represents the principle of the method.
  • nozzles 10 and 11 of the blow shaft 3 are in plan view shown. Arrows 6 and 7 indicate the direction of flow of the air flow on.
  • the blow duct 3 is equipped with an intermediate plate, which the separate spaces for the nozzles 10 and 11 from each other. This is it is possible to separate each room of the blow duct 3 with compressed air supply.
  • the blow duct 3 has the nozzles 10 and 11 from which the air flows 6 and 7 emerge.
  • the Intermediate sheet 14 is the blow chute 3 in two chambers 15 and 16 divided, via which compressed air is fed to the nozzles 10 and 11.
  • the Blasschacht 3 opposite the air baffle 2 is attached, the suitable adjustment mechanisms moved towards the blow shaft 3 can be what is indicated by the double arrow 21.
  • the wing flap 22 is provided, which is about the axis 23 can be pivoted, as indicated by the arrow 24. From the stretching channel 12 emerging thread sheet 8 is by the Air flows from the air outlet nozzles 10 and 11 laterally back and forth emotional. Through the wing flap 22, the sheet 8 is additionally in Production direction swung back and forth. That on the storage belt 13 forming fleece has an exceptionally high uniformity and same basis weight distribution.
  • FIG. 5 shows the preferred embodiment, in which the hollow and roller 30 provided with slots 31 in the blow chute 3 in one separate longitudinal channel 40 is arranged.
  • an air storage space 32 is present, which in two over the intermediate plate 14 Chambers 15 and 16 is divided.
  • the nozzles 10 are in the nozzle wall 33 and 11 arranged in rows one above the other.
  • the deposits are 35 replaceable.
  • the sealing wall 34 has one above the other Longitudinal slots 36, which with the longitudinal slots 31 in the roller 30th correspond.
  • the longitudinal slots 31 and 36 are so on top of each other voted that the compressed air only either the upper chamber 15 or the lower chamber 16 is supplied. You can take breaks by covering the slots 36 through the roller wall, which allow the threads 8 to be aligned vertically. Depending on Relationship of the longitudinal slots 31 and the roller wall and the slots 36 in the sealing wall 34, the air flow from the longitudinal channel 40 into the Chambers 15 and 16 can be varied.
  • the longitudinal channel 40 is over several Connection piece 42 with a parallel to the longitudinal channel 40th extending compressed air reservoir 41 connected.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Nonwoven Fabrics (AREA)
EP02008606A 2001-07-16 2002-04-17 Procédé et dispositif pour la fabrication de non-tissés du type spunbonded Withdrawn EP1277867A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10133790A DE10133790B4 (de) 2000-07-25 2001-07-16 Verfahren und Vorrichtung zur Herstellung eines Spinnvlieses
DE10133790 2001-07-16

Publications (1)

Publication Number Publication Date
EP1277867A1 true EP1277867A1 (fr) 2003-01-22

Family

ID=7691458

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02008606A Withdrawn EP1277867A1 (fr) 2001-07-16 2002-04-17 Procédé et dispositif pour la fabrication de non-tissés du type spunbonded

Country Status (4)

Country Link
US (1) US7504062B2 (fr)
EP (1) EP1277867A1 (fr)
JP (1) JP3659939B2 (fr)
TW (1) TW591148B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1749916A1 (fr) * 2005-08-02 2007-02-07 Carl Freudenberg KG Tissus non-tissés, ainsi que leur procédé de fabrication

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3714086A4 (fr) 2017-11-22 2021-10-06 Extrusion Group, LLC Ensemble embout de matrice et procédé de fusion-soufflage

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3293718A (en) * 1963-07-01 1966-12-27 Du Pont Apparatus for forming non-woven web structures
GB1219921A (en) * 1967-01-27 1971-01-20 Monsanto Co Method and apparatus for pneumatically or hydraulically depositing a non-woven web structure
US3720361A (en) * 1970-03-26 1973-03-13 Stamicarbon Process and device for the preparation of a plastic fiber fleece
US5695377A (en) * 1996-10-29 1997-12-09 Kimberly-Clark Worldwide, Inc. Nonwoven fabrics having improved fiber twisting and crimping
EP1081262A1 (fr) * 1999-08-30 2001-03-07 Nippon Petrochemicals Company, Limited Procédé et dispositif pour la production d'un non-tissé aligné de manière longitudinale

Family Cites Families (17)

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Publication number Priority date Publication date Assignee Title
US3030659A (en) * 1958-12-29 1962-04-24 Owens Corning Fiberglass Corp Apparatus for producing fibers
DE1303556B (fr) 1960-04-23 1972-05-31
US3460731A (en) 1967-07-07 1969-08-12 Du Pont Filament deflecting apparatus
JPS5020635A (fr) 1973-06-22 1975-03-05
DE2421401C3 (de) 1974-05-03 1982-12-09 J.H. Benecke Gmbh, 3000 Hannover Vorrichtung zum Verteilen eines Fadenbündels bei der Spinnvlies-Herstellung
SE397943B (sv) * 1975-09-26 1977-11-28 Svenska Flaektfabriken Ab Sett och anordning for att forma en materialbana genom avsettning av i en fordelningskammare instrommande i gasformigt medium fordelad strom av partiklar, exempelvis fibrer, pa en i fordelningskammaren anordnad ...
DD128204B1 (de) 1976-10-11 1979-05-30 Malcomess Hans Juergen Verfahren und vorrichtung zur herstellung von elementarfadenvliesstoff
US4285452A (en) * 1979-02-26 1981-08-25 Crown Zellerbach Corporation System and method for dispersing filaments
DE3542660A1 (de) 1985-12-03 1987-06-04 Freudenberg Carl Fa Verfahren zur herstellung von spinnvliesen mit erhoehter gleichmaessigkeit
DE3601201C1 (de) 1986-01-17 1987-07-09 Benecke Gmbh J Verfahren zur Herstellung von Wirrvliesbahnen und Vorrichtung zur Durchfuehrung des Verfahrens
DE3907215C2 (de) 1988-05-27 1993-11-25 Corovin Gmbh Vorrichtung zur Herstellung eines Vlieses aus Endlosfäden sowie damit hergestelltes mehrlagiges Vlies
US5312500A (en) * 1989-01-27 1994-05-17 Nippon Petrochemicals Co., Ltd. Non-woven fabric and method and apparatus for making the same
US5075068A (en) 1990-10-11 1991-12-24 Exxon Chemical Patents Inc. Method and apparatus for treating meltblown filaments
DE4102650A1 (de) * 1991-01-30 1992-08-06 Silver Plastics Gmbh & Co Kg Verfahren und vorrichtung zum herstellen eines spinnvlieses aus synthetischem polymer
CA2224906A1 (fr) 1995-08-02 1997-02-13 Kimberly-Clark Worldwide, Inc. Procede et dispositif de production de fibres artificielles de bandes de non-tisses et de non-tisses sorbants
US5762857A (en) * 1997-01-31 1998-06-09 Weng; Jian Method for producing nonwoven web using pulsed electrostatic charge
DE50100381D1 (de) * 2000-07-25 2003-08-21 Freudenberg Carl Kg Verfahren und Vorrichtung zur Herstellung eines Spinnvlieses

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3293718A (en) * 1963-07-01 1966-12-27 Du Pont Apparatus for forming non-woven web structures
GB1219921A (en) * 1967-01-27 1971-01-20 Monsanto Co Method and apparatus for pneumatically or hydraulically depositing a non-woven web structure
US3720361A (en) * 1970-03-26 1973-03-13 Stamicarbon Process and device for the preparation of a plastic fiber fleece
US5695377A (en) * 1996-10-29 1997-12-09 Kimberly-Clark Worldwide, Inc. Nonwoven fabrics having improved fiber twisting and crimping
EP1081262A1 (fr) * 1999-08-30 2001-03-07 Nippon Petrochemicals Company, Limited Procédé et dispositif pour la production d'un non-tissé aligné de manière longitudinale

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1749916A1 (fr) * 2005-08-02 2007-02-07 Carl Freudenberg KG Tissus non-tissés, ainsi que leur procédé de fabrication

Also Published As

Publication number Publication date
JP3659939B2 (ja) 2005-06-15
JP2003073965A (ja) 2003-03-12
US7504062B2 (en) 2009-03-17
US20030030175A1 (en) 2003-02-13
TW591148B (en) 2004-06-11

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