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WO1999005354A1 - Procede et dispositif pour realiser une fibrillation ou defibrillation de fibres de cellulose - Google Patents

Procede et dispositif pour realiser une fibrillation ou defibrillation de fibres de cellulose Download PDF

Info

Publication number
WO1999005354A1
WO1999005354A1 PCT/DE1998/001810 DE9801810W WO9905354A1 WO 1999005354 A1 WO1999005354 A1 WO 1999005354A1 DE 9801810 W DE9801810 W DE 9801810W WO 9905354 A1 WO9905354 A1 WO 9905354A1
Authority
WO
WIPO (PCT)
Prior art keywords
sheet
fabric
liquid
attack
mechanical
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.)
Ceased
Application number
PCT/DE1998/001810
Other languages
German (de)
English (en)
Inventor
Günter von Harten
Wolfgang Kurschatke
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.)
Eduard Kuesters Maschinenfabrik GmbH and Co KG
Original Assignee
Eduard Kuesters Maschinenfabrik GmbH and Co 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
Application filed by Eduard Kuesters Maschinenfabrik GmbH and Co KG filed Critical Eduard Kuesters Maschinenfabrik GmbH and Co KG
Publication of WO1999005354A1 publication Critical patent/WO1999005354A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B3/00—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating
    • D06B3/10—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of fabrics
    • D06B3/20—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of fabrics with means to improve the circulation of the treating material on the surface of the fabric
    • D06B3/205—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of fabrics with means to improve the circulation of the treating material on the surface of the fabric by vibrating
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B13/00—Treatment of textile materials with liquids, gases or vapours with aid of vibration
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
    • D06C11/00—Teasing, napping or otherwise roughening or raising pile of textile fabrics

Definitions

  • the invention relates to a method of the type corresponding to the preamble of claim 1 and a device suitable therefor.
  • Dissolved carbon disulfide which is a less desirable reaction partner because of its toxicity and explosiveness, but which could last for many decades due to its good dissolving and spinning properties.
  • Cellulose fibers produced by the solution spinning process have different properties from natural cellulose fibers. In particular, it was found that there is a longitudinal structure in that the cellulose Crystallites are primarily oriented in the longitudinal direction of the fibers. The binding of these longitudinal crystallites in the transverse direction is weaker than in the longitudinal direction. The fibers can be split lengthways under suitable stress conditions.
  • the object of the invention is to improve the process of Fibrillation or defibrillation to perform more evenly and quickly.
  • the mechanical attack takes place evenly over the entire surface of the fabric (claim 2), but it is also possible by suitable alignment of the mechanical attack or by appropriate covering of surface parts of the fabric, the mechanical attack over the surface in a pattern to be done differently (claim 3).
  • the fabric must be wet during fibrillation / defibrillation. This can be achieved in that the mechanical attack takes place on a dripping wet fabric (claim 4), which is located outside of a liquor supply and is continuously provided with as much liquor as is possible at all by suitable measures such as spraying or pouring (claim 4 ).
  • the alternative provides that the mechanical attack is carried out under fleet (claim 5), i.e. the web of the textile fabric is passed through a trough filled with liquid and exposed to mechanical attack below the liquid level.
  • blowing agents can e.g. Be bars, strips, webs or the like, which are moved in the liquid relative to the web and communicate this movement to the liquid zones adjacent to the web.
  • attack elements to touch the surface of the sheet-like fabric at high relative speed. Such an attack is distributed and evened out by the liquid.
  • An important embodiment of the invention according to claim 8 is that the sheet-like fabric stretched transversely before the action of the mechanical attack becomes.
  • transverse expansion can take place, for example, in a device according to DE 41 22 121 C2, in which the web is passed through the gap between intermeshing rib rollers.
  • the invention is implemented in a device according to claim 9.
  • This can be designed according to claim 10, i.e. in the manner of a roller skid provided with additional means for exercising the mechanical attack.
  • the web of the fabric can also be guided over a drum, as set out in claim 11.
  • This drum can be designed in particular according to claim 12, wherein the rotatable rods roll on the inside of the sheet-like fabric and thus exert a touching mechanical attack on the web.
  • the drum which is wrapped on the web-shaped surface by almost 325 ° and in turn can still perform an eccentric movement - by the lashing effect of each rod due to its high relative speed to the web-shaped surface structure.
  • the drum can rotate in the running direction of the sheet-like sheet, but faster than this or - preferably - counter to the running direction of the sheet-like sheet (claim 14). It is decisive the relative movement that gives the mechanical attack.
  • the means for keeping the web-like sheet-like structure wet can comprise a device for spraying or pouring on the liquid, while an alternative according to claim 16 provides a liquid trough through which the web-like sheet-like structure can be passed.
  • the means for exerting the mechanical attack can be arranged in the liquid trough.
  • roller skids with additional means to exercise a mechanical attack for the purpose of promoting the exchange of fleets go e.g. from DE-PSen 690 530, 1 031 261 and 1 052 350 and DE-OS 1 460 418.
  • a device with a rotating drum for generating a mechanical attack results from DE-PS 1 113 201 and DE 44 13 871 Cl.
  • the purpose here is to promote the exchange of liquors and to break through the laminar liquid layer on the surface of the fabric or the fibers.
  • the focus of the invention is not on fleet replacement, but rather on the mechanical action which is intended to loosen up the structural bond of the fiber.
  • the upstream connection of a device for transverse stretching of the sheet-like fabric has an advantageous effect on the desired effect (claim 18).
  • the invention is also realized in the use of washing devices, in which a violent relative movement of the liquid relative to the fibers is produced, for the fibrillation or defibrillation of cellulose fibers produced by the solution spinning process (claim 19).
  • Fig. 1 shows a vertical longitudinal section through a device like a roller skid
  • Fig. 2 shows a cross section through a device corresponding to a drum washing machine
  • Fig. 3 shows a partial view of a device for generating a transverse stretch in a web.
  • the device designated 100 as a whole in FIG. 1 comprises a liquid trough 1, in which, in the exemplary embodiment, two rows 2, 3 of mutually parallel, deflecting rollers 4 and 5, which are arranged in horizontal planes, are arranged at a distance above one another.
  • the web-shaped textile fabric 10 is alternately guided over an upper deflection roller and a lower deflection roller 5 and then again over an upper deflection roller 4 and accordingly forms upright loops 6 with upright sections 6 ′ of the web-shaped fabric 10.
  • the respective section 6 ′ is opposed on both sides of the sheet-like fabric 10 by means 20 for generating a mechanical attack on the sheet-like fabric 10.
  • the means 20 consist of different heights on the two sides of the sheet-like fabric 10, offset in the height direction, corresponding to the
  • Arrow 8 revolving rods 9 or tubes, which are provided on the circumference with ribs 11 running approximately parallel to the axial direction, which set the neighboring liquid in motion when the rods 9 revolve, so that it carries out a strong relative movement to the continuous sheet-like fabric 10.
  • the bars 9 could e.g. be designed as so-called fin tubes. They form propellants which give a relative movement to the surface of the sheet-like fabric 10 when the neighboring liquid circulates.
  • Fig. 1 touch the ribs 11 with their outer end face the sheet-like fabric 10 and act in this way similar to so-called racket rollers.
  • racket rollers there is also the possibility of moving the rods 9 a little further away from the sheet-like fabric 10, so that the end faces of the ribs 11 pass close to the sheet-like fabric 10 but do not touch it.
  • the rods 9 can, however, partially or all of them instead of in synchronism with the sheet-like fabric 10 as in the direction of rotation 8, in the opposite direction of rotation
  • Fig. 1 two alternative means are indicated to keep the sheet-like fabric 10 wet when the rods 9 act.
  • One means comprises nozzles 12, which supply a liquid from a common supply line 13 and each extend above an associated deflection roller 4 of the upper row 2 across the width of the sheet-like fabric 10 and spray or pour liquid onto this, which leads to that the sheet-like fabric 10 is dripping wet in the sections 6 '.
  • the trough 1 naturally has an outlet in order to discharge the drained liquid which collects on the floor.
  • the other alternative is that the trough 1 is filled with the liquid 15 up to a mirror 15 ', so that the upright sections 6' run entirely under the liquor and the tubes 9 provided with the ribs 11 also work under the liquor.
  • a trough 21 is provided which is filled with the liquid 15 up to a mirror 24.
  • the trough 21 encloses at a distance a drum 30 arranged in it, which consists of two end disks 31 provided at a distance corresponding to the width of the sheet-like sheet-like structure 10 and on the edge of which bars 32 are uniformly distributed over the circumference, the axes of which are parallel to one another on a cylinder. are arranged flat.
  • the rods 32 are rotatably mounted about the axes on the end disks 31.
  • the small circles are missing and are
  • the entire drum 30 or the two end disks 31 are arranged eccentrically on a driven shaft 33 which is mounted outside of the trough 21 in its machine frame, as indicated at 34, so that the entire drum 30 around the axis 33 Eccentric movement executes.
  • the sheet-like sheet-like structure 10 is guided in a meandering manner around the drum 30 by two guide rollers 25, 26 arranged above the drum 30 in the manner shown in FIG.
  • the drum 30 is driven independently of the eccentric 34, so that it is one of the circumference
  • Forward speed of the sheet-like fabric 10 has different peripheral speeds. This drive preferably takes place counter to the running direction of the sheet-like fabric 10 in the direction of the arrow 35 in order to achieve the highest possible relative speed.
  • the rods 32 roll on the sheet-like sheet 10, while the rods 32 'non-rotatably along the sheet-like sheet 10. This is subject to a complex mechanical action that produces the fibrillation or defibrillation effect.
  • the sheet-like fabric 10 consists entirely or essentially of the NMMO process
  • the NMMO process is a solution spinning process in which N-methylmorpholine-N-oxide is used as the solvent.
  • the manufactured in this way Posed fibers show a clear longitudinal structure and a tendency to fibrillation, which is triggered by the mechanical attack in the liquid 15.
  • the sheet-like fabric 10 undergoes a structural change that advantageously influences the mechanical properties and gives the goods a peach-skin-like feel that is desirable under certain fashion aspects.
  • Liquid 15 is an aqueous alkaline liquor when it comes to fibrillation.
  • An acidic enzymatic liquor can be considered for defibrillation, but the mechanical attack on the sheet-like fabric 10 takes place in both cases, e.g. with devices 100 or 200 according to FIGS. 1 and 2.
  • the web-like sheet-like structure 10 passes through the gap between two cooperating parallel rollers 41, 42 arranged transversely to the direction of travel, which have circumferential ribs 43 and 44 at axial intervals.
  • the circumferential ribs 43 of the roller 41 and the circumferential ribs 44 of the roller 42 have constant axial distances from one another in both rollers 41, 42 and are arranged offset from one another, so that the peripheral ribs 43 of the roller 41 in the manner shown in FIG. 3 in the spaces between the peripheral ribs 44 of the roller 42 can engage.
  • the web of material passed through the gap 45 between the rollers 41, 42 is deformed in a wavy manner in the manner shown and, due to the friction on the end faces of the peripheral ribs 43, 44, undergoes a meterable transverse expansion which depends on the degree of mutual engagement of the peripheral ribs 43, 44 .
  • This transverse expansion already leads to a first loosening of the fiber structure in the sheet-like fabric 10, which promotes the fibrillation effect through the mechanical attack in the devices 100, 200.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

L'invention concerne un procédé pour réaliser une fibrillation ou défibrillation de fibres de cellulose produites selon le procédé de filature par solution, notamment selon le procédé au NMMO. Ce procédé consiste à exercer une sollicitation mécanique sur une structure plane (10) en forme de bande, transportée de façon continue dans le sens de la largeur, placée dans un liquide (15). La sollicitation mécanique peut être exercée par des éléments d'entraînement placés dans le liquide, se présentant sous la forme de barres en rotation (9) qui comportent des nervures longitudinales (11).
PCT/DE1998/001810 1997-07-26 1998-07-01 Procede et dispositif pour realiser une fibrillation ou defibrillation de fibres de cellulose Ceased WO1999005354A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19732230.1 1997-07-26
DE19732230A DE19732230A1 (de) 1997-07-26 1997-07-26 Verfahren und Vorrichtung zum Fibrillieren oder Defibrillieren von Cellulosefasern

Publications (1)

Publication Number Publication Date
WO1999005354A1 true WO1999005354A1 (fr) 1999-02-04

Family

ID=7836999

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1998/001810 Ceased WO1999005354A1 (fr) 1997-07-26 1998-07-01 Procede et dispositif pour realiser une fibrillation ou defibrillation de fibres de cellulose

Country Status (2)

Country Link
DE (1) DE19732230A1 (fr)
WO (1) WO1999005354A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1052350B (de) * 1956-09-11 1959-03-12 Benteler Werke Ag Vorrichtung zum Nassbehandeln von Gewebebahnen
DE2016645A1 (de) * 1969-04-11 1970-10-29 Riggs & Lombard Inc., Lowell, Mass. (V.St.A.) Kontinuierlich arbeitende Waschvorrichtung für in offener Breite ablaufende Stoffbahnen
DE4122121A1 (de) * 1991-07-04 1993-01-14 Kuesters Eduard Maschf Breitdehnvorrichtung und damit ausuebbares verfahren
DE4413871C1 (de) * 1994-04-21 1995-01-26 Kuesters Eduard Maschf Behandlungsvorrichtung für textile Warenbahnen
EP0806512A1 (fr) * 1996-05-08 1997-11-12 Solipat Ag Procédé et dispositif de fibrillation de fibres cellulosiques facilement fibrillables, notamment de fibres tencel

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2461647A1 (de) * 1974-12-27 1976-07-08 Riggs & Lombard Inc Reinigungsstrasse fuer gewebebahnen
DE4022424A1 (de) * 1990-07-13 1992-01-16 Vepa Ag Vorrichtung zum waschen von warenbahnen

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1052350B (de) * 1956-09-11 1959-03-12 Benteler Werke Ag Vorrichtung zum Nassbehandeln von Gewebebahnen
DE2016645A1 (de) * 1969-04-11 1970-10-29 Riggs & Lombard Inc., Lowell, Mass. (V.St.A.) Kontinuierlich arbeitende Waschvorrichtung für in offener Breite ablaufende Stoffbahnen
DE4122121A1 (de) * 1991-07-04 1993-01-14 Kuesters Eduard Maschf Breitdehnvorrichtung und damit ausuebbares verfahren
DE4413871C1 (de) * 1994-04-21 1995-01-26 Kuesters Eduard Maschf Behandlungsvorrichtung für textile Warenbahnen
EP0806512A1 (fr) * 1996-05-08 1997-11-12 Solipat Ag Procédé et dispositif de fibrillation de fibres cellulosiques facilement fibrillables, notamment de fibres tencel

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
I. MARINI, F. BRAUNEIS: "Lenzing-Lyocell - die wichtigsten Unterschiede zu den anderen cellulosischen Fasern", TEXTILVEREDLUNG, vol. 31, no. 9/10, 1996, WEINFELDEN, CH, pages 182 - 187, XP000630347 *

Also Published As

Publication number Publication date
DE19732230A1 (de) 1999-01-28

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