EP0805888B1 - Verfahren zur behandlung eines zellfaservlieses - Google Patents

Verfahren zur behandlung eines zellfaservlieses Download PDF

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Publication number
EP0805888B1
EP0805888B1 EP96903044A EP96903044A EP0805888B1 EP 0805888 B1 EP0805888 B1 EP 0805888B1 EP 96903044 A EP96903044 A EP 96903044A EP 96903044 A EP96903044 A EP 96903044A EP 0805888 B1 EP0805888 B1 EP 0805888B1
Authority
EP
European Patent Office
Prior art keywords
rinsing
kwh
lap
jets
fibers
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 - Lifetime
Application number
EP96903044A
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English (en)
French (fr)
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EP0805888A1 (de
Inventor
Jean-Louis Neveu
Bernard Louis Dit Picard
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.)
Essity Operations France SAS
Original Assignee
Fort James France
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Filing date
Publication date
Application filed by Fort James France filed Critical Fort James France
Publication of EP0805888A1 publication Critical patent/EP0805888A1/de
Application granted granted Critical
Publication of EP0805888B1 publication Critical patent/EP0805888B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • D04H1/40—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
    • D04H1/44—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • D04H1/498—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres entanglement of layered webs
    • 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
    • D04H1/02—Cotton wool; Wadding
    • 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
    • D04H1/40—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
    • D04H1/44—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • D04H1/492—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres by fluid jet
    • 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
    • D06B1/00—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating
    • D06B1/02—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating by spraying or projecting
    • 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
    • D06B5/00—Forcing liquids, gases or vapours through textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing impregnating
    • D06B5/02—Forcing liquids, gases or vapours through textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing impregnating through moving materials of indefinite length
    • D06B5/08—Forcing liquids, gases or vapours through textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing impregnating through moving materials of indefinite length through fabrics

Definitions

  • the invention relates to a method for treating a sheet of fibers.
  • natural fibers such as cotton fibers and particularly targets the step during which the fibers are rinsed to remove the chemicals with which the tablecloth was previously impregnated for its treatment.
  • the leaves are first removed by mechanical means, twigs or other foreign matter from the picking. Then we scour the fibers of their sheath of waxy and fatty materials by chemical treatment of scouring consisting in impregnating a sheet formed with the unbleached fibers using, for example, a soda liquor which is reacted with heating in a vaporizer. After treatment, the sheet is neutralized then rinsed at the water. Depending on requirements, it may be necessary to bleach the fibers and / or size. For bleaching, put the fibers in contact with a water solution oxygenated which is left to act at an appropriate temperature before neutralizing and rinse the fibers again with water.
  • Scouring and bleaching can be carried out in batches in tanks containing the liquor.
  • continuous processing methods have been developed in recent years to lower costs when it comes to to produce cotton wool in large quantities.
  • the Applicant has put developed a continuous process to obtain a web having a certain cohesion that can be used as is in certain applications - cotton in packs, dressings or cosmetic pads for example - without having to mechanically rework the tablecloth, i.e. shred it for carding or tablecloth in another way, again.
  • the steps of impregnation with the different liquors of scouring, bleaching or neutralizing rinse, respectively, are made by pouring onto the water table in the form of liquid slides in conditions which allow both a control of the quantity of liquid carried by the tablecloth and a homogeneous impregnation thereof.
  • the general effectiveness of process is improved as well as the quality of the material after treatment whose characteristics vary little from one production to another.
  • Liquid application in this form ensures at the same time a certain consolidation of the sheet in this is due in particular to the energy of the liquid communicated to it.
  • Document FR-A-2 054 010 discloses a device using water jets for washing fibers.
  • the invention provides a method for treating natural cellulosic fibers, in particular cotton fibers, comprising the steps of depositing the fibers on a permeable fabric conveyor to form a sheet of 100 to 800 g / m 2 , of impregnation with a treatment, treatment and then rinsing liquor by means of an aqueous liquid, characterized in that the rinsing is carried out by application of said liquid in the form of jets directed towards one face of the sheet perpendicular to its direction of travel and communicating with the water table has an energy of between 2 and 100 kWh per tonne of product treated.
  • each injector includes, for example, an elongated chamber, closed along its length by a perforated plate, in one or more rows, of a large number of small diameter holes, of the order 100 ⁇ m.
  • the chamber is supplied with pressurized liquid which escapes through the orifices in the form of parallel fine jets of corresponding diameter;
  • an injector composed of 2 rows of holes for diameter 120 ⁇ m, 0.6 mm apart, dissipate an energy from 2 to 58 kwh / T, and distribute a quantity of rinsing water, respectively, from 9 to 41 m3 per tonne of treated product. These energies correspond to pressures of use of injectors between 5 and 50 bars
  • the jets are used for rinsing a sheet whose grammage can go up to 800 g / m 2 , well beyond the grammages of the nonwovens for which they are generally used.
  • the level of energy to be supplied depends on the thickness of the sheet and its grammage.
  • the energy communicated to the water table will be less than 40 kwh / T. This will be the case, for example, for a sheet of 250 g / m 2
  • the flow of liquid is understood between 8 and 40 m3 per ton of cotton.
  • this flow is limited to 8 m3 / T, corresponding to levels low energy, less than 10 kWh / T, especially for cotton tablecloths intended for application as packaged cotton wool.
  • this flow already allows effective rinsing of the water table, and we are not looking, in this case, for a increase in the mechanical resistance of the sheet.
  • the application of an energy of 4 to 30 kwh / T increases the resistance characteristics, without reducing the thickness of the sheet.
  • the jets are also applied to the side opposite the first.
  • a product is thus obtained whose surface condition is the same on both sides; it is symmetrical.
  • the installation may include a first station 2 for tableclothing the unbleached fibers which have been previously opened, mechanically cleaned, and possibly mixed if they are of different origins.
  • the coating means can be of any form known to those skilled in the art: mechanical (carding) and / or pneumatic.
  • a particular form of ply is described in patent application FR-A-2 701 039 or FR-A-2 701 040 where it comprises two layers formed of card webs on either side of a central layer obtained by pneumatic track.
  • This can be of the type described in patent application FR-A-2 660 942 but any other impregnation means also falls within the scope of the present process.
  • the tablecloth loaded with boiling liquor (soda and wetting agent) is conducted to a vaporizer 5 heated to a temperature close to 100 ° C. where it stays, while remaining continuous thanks to an appropriate storage means, during the time required for the reaction. This depends on the liquor and the rate of carrying. Then.
  • the tablecloth is rinsed, and the boiling juice is extracted with next station 6.
  • the scorched layer at 8 hydrophilic If you want to whiten the fibers, you can impregnate the scorched layer at 8 hydrophilic with a bleaching solution comprising, for example, water oxygenated, then the web is again introduced into a vaporizer 10 heated to a temperature close to 100 ° C. in which it remains for a sufficient time for money laundering to be effective.
  • a bleaching solution comprising, for example, water oxygenated
  • the rinsing step before drying is advantageously carried out by means of jets of liquid, water generally, such than those used in nonwoven manufacturing techniques by hydraulic needling of fibers, well known in the art under the designation "jetlace".
  • jets of liquid, water generally, such than those used in nonwoven manufacturing techniques by hydraulic needling of fibers, well known in the art under the designation "jetlace”.
  • jetlace we could, for example, use an installation provided by the company PERFOJET.
  • the station 100 for rinsing by jets of water represented in FIG. includes a needle injector 105 arranged across the web and which applies high pressure water jets on its surface.
  • the water jets are weak diameter, 120 ⁇ m, 0.6 mm apart and arranged in two parallel rows slightly spaced from each other.
  • the liquid passes through the tablecloth and the support fabric permeable. It is sucked through a transverse slit parallel to the line jets communicating with a suction box 110.
  • the installation includes a second injector 115 for the treatment of the face opposite of the tablecloth.
  • the needle injector 115 is placed along a generator of the cylinder.
  • the injectors 105 and 115 are supplied by a high pressure pump, not shown.
  • a suction box 125 is placed inside the cylinder and collects the water coming from the injector 115.
  • the sheet is guided around the cylinder of so as to pass to the right of the jets for rinsing, then is taken up by the conveyor. It is brought to a slot with high depression for the expression of liquids, before being dried in a hot air oven, for example as in previous installation. Finally the tablecloth is taken up to be, for example, cut and assembled.
  • Tests were carried out on a cotton ply of 250 g / m 2 formed from a central ply by pneumatic route, framed by two isotropic card webs. This sheet was previously bleached and dried according to a process of the prior art.
  • the thickness of the sheet is 4.5 mm measured under a load of 5 g / cm 2 . It still contains surfactants in small quantities which we highlight by measuring, according to the methods recommended by the French Pharmacopoeia, 10th edition, the height of the foam formed, and by determining its rate of substances soluble in water. . For the sheet used in the test, these values were 1 mm and 0.3% respectively.
  • cross direction resistance increases appreciably up to 4.4kwhfr then weakly up to 25.6 kwh / T, to increase again substantially up to 57 kwh / T.
  • the method of the invention makes it possible to obtain an effective rinsing, without modifying the structure of the sheet while controlling the improvement in its resistance.
  • an energy level of between 2 and 10 kwh / T is chosen and a flow rate preferably between 8 and 22 m 3 per tonne of product treated.
  • the mechanical resistance of the sheet is increased by positioning preferably between 10 and 40 kwh / T, the flow rate being between 8 and 37 m 3 per tonne of product treated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Chemical Treatment Of Fibers During Manufacturing Processes (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)

Claims (7)

  1. Verfahren zum Behandeln von natürlichen Zellulosefasern, insbesondere Baumwollfasern, mit den folgenden Schritten: Ablegen der Fasern auf einer kontinuierlichen Ablaufbahn zur Herstellung eines Bandes von 100 bis 800 g/m2, Imprägnieren mit einer Behandlungslösung, Behandeln und dann Waschen mittels einer wässrigen Flüssigkeit, dadurch gekennzeichnet, daß das Waschen durch Aufbringen der Flüssigkeit mittels Strahlen erfolgt, die gegen eine Seite des Bandes senkrecht zu seiner Ablaufrichtung mit einer Energie von 2 bis 60 kwh pro Tonne des behandelten Produktes gerichtet sind.
  2. Verfahren nach Anspruch 1, insbesondere zur Herstellung von paketierter hydrophiler Baumwolle, dadurch gekennzeichnet, daß die Energiemenge zwischen 2 und 10 kwh pro Tonne des behandelten Produktes liegt.
  3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß der Durchsatz zwischen 8 und 22 m3 pro Tonne des behandelten Produktes liegt.
  4. Verfahren nach Anspruch 1, insbesondere zur Herstellung von Abschminktüchern oder einem ähnlichen Produkt, dadurch gekennzeichnet, daß das Niveau der Energie zwischen 2 und 40 kwh/T, vorzugsweise zwischen 10 und 40 kwh/T liegt.
  5. Verfahren nach Anspruch 4, dadurch gekennzeichnet, daß der Durchsatz zwischen 8 und 37 m3 pro Tonne des behandelten Produktes liegt.
  6. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Strahlen in gleicher Weise gegen die der betreffenden Seite gegenüberliegende Seite gerichtet werden.
  7. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß in das band bis zu 30 % Synthesefasern eingearbeitet werden.
EP96903044A 1995-02-03 1996-02-02 Verfahren zur behandlung eines zellfaservlieses Expired - Lifetime EP0805888B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9501280A FR2730248B1 (fr) 1995-02-03 1995-02-03 Procede de traitement d'une nappe de fibres cellulosiques
FR9501280 1995-02-03
PCT/FR1996/000181 WO1996023922A1 (fr) 1995-02-03 1996-02-02 Procede de traitement d'une nappe de fibres cellulosiques

Publications (2)

Publication Number Publication Date
EP0805888A1 EP0805888A1 (de) 1997-11-12
EP0805888B1 true EP0805888B1 (de) 1999-03-17

Family

ID=9475823

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96903044A Expired - Lifetime EP0805888B1 (de) 1995-02-03 1996-02-02 Verfahren zur behandlung eines zellfaservlieses

Country Status (9)

Country Link
US (1) US5771517A (de)
EP (1) EP0805888B1 (de)
AT (1) ATE177796T1 (de)
CA (1) CA2212137C (de)
DE (1) DE69601782T2 (de)
ES (1) ES2128833T3 (de)
FR (1) FR2730248B1 (de)
GR (1) GR3030204T3 (de)
WO (1) WO1996023922A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013014259A1 (fr) 2011-07-28 2013-01-31 Georgia Pacific France Produit fibreux absorbant contenant au moins 50% de fibres cellulosiques hydrophiles et comprenant au moins deux couches dont l'une est hydroliee

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030039682A1 (en) * 1999-12-07 2003-02-27 Philippe Gregoire Article such as a makeup removal pad comprising an external surface for applying aqueous products on the skin
DK1106723T3 (da) * 1999-12-07 2003-04-22 Georgia Pacific France Pude af vandsugende bomuldsvat beregnet til hudpleje og omfattende to forskellige yderflader
FR2882068B1 (fr) * 2005-02-14 2011-04-08 Georgia Pacific France Tampon fibreux impregne
FR2942133B1 (fr) 2009-02-13 2012-12-14 Georgia Pacific France Article pour le nettoyage de la peau
CN115976766B (zh) * 2022-09-30 2023-08-29 连云港市百顺医疗用品有限公司 光学零件清洁用脱脂棉新装置与工艺

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2031475A1 (de) * 1969-07-02 1971-03-18 Iwanowskoje spesialnoje konstruk torskoje büro krasilno otdelotschnowo oborudowanija, SSSR Iwanowo (Sowjet union) Einrichtung zur Flussigkeitsbe handlung eines sich im Strom kontinuier hch bewegenden Fasergutes
US3864079A (en) * 1971-06-04 1975-02-04 Hercules Inc Method for scouring and blooming pile carpet
US4095443A (en) * 1976-11-17 1978-06-20 Schmidt Industries, Inc. Apparatus for washing rugs and the like
DE3703267A1 (de) * 1987-02-04 1988-08-18 Babcock Textilmasch Siebtrommel-waschvorrichtung
FR2662711B2 (fr) * 1989-12-01 1992-08-14 Kaysersberg Sa Procede de fabrication de nontisse.
FR2660942B1 (fr) * 1990-04-11 1994-09-09 Kaysersberg Sa Procede d'impregnation en continu d'une nappe textile.
CA2107506A1 (en) * 1992-10-01 1994-04-02 Kenneth Benjamin Higgins Method and apparatus to refurbish carpet tiles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013014259A1 (fr) 2011-07-28 2013-01-31 Georgia Pacific France Produit fibreux absorbant contenant au moins 50% de fibres cellulosiques hydrophiles et comprenant au moins deux couches dont l'une est hydroliee

Also Published As

Publication number Publication date
DE69601782T2 (de) 1999-07-29
CA2212137A1 (fr) 1996-08-08
EP0805888A1 (de) 1997-11-12
FR2730248B1 (fr) 1997-03-21
US5771517A (en) 1998-06-30
ATE177796T1 (de) 1999-04-15
DE69601782D1 (de) 1999-04-22
WO1996023922A1 (fr) 1996-08-08
FR2730248A1 (fr) 1996-08-09
GR3030204T3 (en) 1999-08-31
ES2128833T3 (es) 1999-05-16
CA2212137C (fr) 2006-05-30

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