US3834869A - System for dispersing fibers in suspension including air laying web,conditioning fibers in web,dispersing web in liquid - Google Patents

System for dispersing fibers in suspension including air laying web,conditioning fibers in web,dispersing web in liquid Download PDF

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Publication number
US3834869A
US3834869A US00273628A US27362872A US3834869A US 3834869 A US3834869 A US 3834869A US 00273628 A US00273628 A US 00273628A US 27362872 A US27362872 A US 27362872A US 3834869 A US3834869 A US 3834869A
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United States
Prior art keywords
web
fibers
liquid
fibres
dispersing
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Expired - Lifetime
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US00273628A
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English (en)
Inventor
B Ancelle
P Lejuene
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Creusot Loire SA
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Creusot Loire SA
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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
    • 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
    • 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
    • D04H1/70—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
    • D04H1/736—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 characterised by the apparatus for arranging fibres
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S68/00—Textiles: fluid treating apparatus
    • Y10S68/903—Perforated drum and continuous textile feed and discharge

Definitions

  • the main, but not exclusive, field of application of the present invention is the manufacture by a wet process of non-woven 'webs' and in particular of non-woven textiles, papers or of similar articles, in which it is desired to obtain a continuous sheet by filtration or draining of a liquid bath containing natural or synthetic fibres, or other solid particles, or a mixture of these materials.
  • fibres or particles will be used indifferently, but it is to be understood that this term refers to fibres, particles of a mixture of fibres and particles.
  • the present invention provides a process according to which the particles or fibres are, during a first period of time, finely dispersed in a gas or in a vapour, and are brought in this state onto a movable support which enters a liquid bath, during a second period of time, for the wetting, pre-treatment or dilution of the fibres of particles, the said particles being laid by suitable means on the movable support when the latter enters the bath.
  • the particles may be dispersed mechanically and deposited on the movable support directly or, by means of an air stream, in the form of a suspension.
  • the path of travel may also be used for carrying out treatments continuously, or for suitably metered additions.
  • a chamber for the dispersion, mixing and/or pre-treatment of the particles in a gaseous medium may be interposed in the path of the gaseous stream, and additives may be added to the particles in this chamber.
  • the movable support may be cylindrical or be constituted by an endless cloth.
  • the extent of the movable support preceding its immersion in the wetting bath may be used to subject the deposited fibres to any type of useful treatment.
  • the deposited fibres may be impregnated locally or uniformly, by spraying, by printing rollers or, in the case of a support constituted by an endless cloth, by initial passage into an auxiliary liquid bath.
  • the fibres may be maintained on th support up to the point of leaving the bath and then detached from the support in the form of a suspension at high concentration, which may be stored for later dilution for the manufacture of a non-woven article.
  • They may likewise be detached from the support within the bath and extracted by a stream of liquid, for the later manufacture of a non-woven article.
  • FIG. 1 is a detail view of the feed hoppers of an embodiment of apparatus according to the invention.
  • FIG. 2 is a detail view of a modification of the apparatus of FIG. 1;
  • FIG. 3 is a detail view of'a liquid bath with a moving cloth to be used with the apparatus of FIG. 1 or 2;
  • FIG. 4 is a detail view of another liquid bath with two moving cloths
  • FIG. 5 is a detail view of another liquid bath with a hollow perforated cylinder
  • FIG. 6 is a view of another embodiment of apparatus according to the invention without gaseous transport of the fibres
  • FIG. 7 is a view of a further embodiment of apparatus according to the invention without gaseous transport.
  • FIG. 8 is a view of yet another embodiment of apparatus according to the invention without gaseous transport.
  • FIG. 1 can be seen an example of an embodiment of the feed for three fibrous constituents, which comprises three hoppers 2, 3 and 4, each for a type of fibre, with metering devices 5, 6, 7 having perforated drums actuated by electric motors 5', 6, 7 whose speed of rotation is controlled by regulators 5", 6", 7 under the control of a proportioner 21 which is itself controlled by a photoelectric cell 22 which detects the fiow of material passing through a main conduit 11.
  • the proportioner 21 also controls a supplementary fluid supply through the conduit 25 into the conduit 11, by means of valve 23 and regulator 24.
  • a fan 26 enables, by means of conduit 27, a reduced pressure to be created in a suction box in the upper portion of the perforated drums of metering devices 5, 6, 7 and, by means of conduit 28, an elevated pressure to be created in a blower box in the lower portion of the said drums.
  • Each hopper 2, 3 and 4 is provided with rotary dispersers 8, 9, 10 beneath the metering devices, for the purpose of defiocculating the fibres.
  • each hopper enter conduit 11, where they are taken up by an air stream produced by fan 29 and also by the complementary fluid which may be supplied by conduit 25.
  • FIG. 2 shows a modification of the feed system, in which a vertical chamber 18 for dispersion, mixing, or pretreatment of fibres in the gaseous stream is interposed in conduit 11, treatment additives being introducible into this chamber 18, via conduit 30, by means of fan 31 and conduit 32, this admission being controlled by valve 33 which is controlled by a regulator 34 controlled by the proportioner 21.
  • the photoelectric cell 22 for the detection of flow which controls the proportioner 21, is placed downstream of chamber 18.
  • FIGS. 3, 4 and 5 show embodiments of liquid baths for wetting and, if necessary, pretreatment and dilution of the fibres; the baths are fed by conduit 11, which may include a dispersion chamber.
  • the fibres in the gaseous stream leaving conduit 11 are deposited on a moving cloth or endless screen and maintained on this cloth by suction boxes 36, 37 the cloth being wrapped around a portion of a revolving hollow perforated cylinder 38 immersed in a liquid wetting bath 39, the fibres leaving in the wet state on the portion 40 of the cloth being emptied into a storage bin 41.
  • the fibrous mat is thus imprisoned between the moving cloth and the perforated drum during the whole of the phase of wetting by immersion in the liquid bath 39.
  • the tank 42 containing the cylinder 38 can be fed with liquid, as shown, by a conduit 43 controlled by a valve 44, while an overflow 45 provided within the cylinder 38 evacuates the excess liquid.
  • the liquid could alternatively be fed in via the interior of the drum, the important feature being that the speed of passage of the liquid through the fibrous mat should be sufficient to entrain the pockets of gas which surround 4 T l? the fibres, so that the wetting is as complete as possible.
  • the fibres maintained between the two cloths 46. arid 47 pass successively into wetting and treatmentliquid baths 50 and 51 contained in tanks 52 and-53, which are provided with feed conduits 54 and 55 and with over.- flows 56 and 57, the suspensionthus obtained between the two moving cloths 46 and 47 being emptied into a tower 58 for high-density storage.
  • the cloths 46. and 47 are provided with rinsing sprays 59.
  • thesuspension is fed to a manufacturing machine via a conduit 61, by the action of a pump 62, additives being added to the suspension in this portion 60 of the chamber via conduits 63 and 64 and mixed by means of an agitator 65.
  • the additive introduced via conduit 63 is, in general, water or another suspension liquid, whose flow is controlled, as a function of the concentration of solid materials in conduit 61, by means of a regulating system 66.
  • FIG. 5 shows a wetting and dis: persion chamber 78 in which the fibres from conduit 11 are deposited on a rotary hollow perforated cylinder 67 and held thereon by the effect of interior suction produced at the upper portion 68 of the latter via a suction duct 69.
  • Cylinder 67 is provided with wetting sprays 76, while sprinklers 77 are provided above the bath 70 to ensure good immersion of the fibres at this point.
  • the dry fibres are taken at the exit of a hopper 1 by a rotary disperser 79 and are deported directly onto a revolving perforated cylinder 67 within which a reduced pressure is produced by a suction duct 69.
  • the revolving cylinder 67 is located within a wetting chamber 78', which comprises a liquid inlet 71' outside the cylinder, equipped with a distributor 94 in order to supply the liquid uniformly onto the whole length of the cylinder.
  • the liquid traverses the cylinder from outside to inside, and wets the layer, keeping it against the cylinder.
  • particles in suspension such as cellulose fibres can be carried along with the liquid and are then retained by the layer in the course of filtration.
  • FIG. 7 shows an embodiment in which fibres coming from hopper 1 pass into a rotary mixer-disperser 80 and are deposited on a moving cloth 81 and held thereonby means of suction in box 82. This cloth brings the fibres directly into treatment chambers for wetting and dispersion as previously described with reference to FIGS. 3 and 4.
  • FIG. 8 shows a system comprising two hoppers 2 and 3, provided with rotary dispersers 83 and 84, and which deposit, in succession, the contents of the two hoppers 2 and 3 in two layers onto a moving cloth 85 on which they are held by means of suction in boxes 91 and 92.
  • the two layers of fibres thus placed on the cloth 85 are introduced into a wet treatment chamber of the'same type as that described with reference to FIG. 4, comprising an upper cloth 86, the fibres contained between the two cloths 85 and 86 passing into a liquid bath 87 in a tank 88 and leaving in the form of a suspension, which is fed by means of a blower box 89 into a storage chamber 90.
  • Process for conditioning fibers and particles prior to suspension in a liquid bath for the manufacture of continuous nonwoven sheets and papers including the steps of successively dispersing fibers in a gaseous fluid, depositing the dispersed fibers on a moving support as a web, moving the support with the formed web thereon into a Wetting bath for the fibers, maintaining the formed web as a web in the wetting bath, removing the web after wetting from the support and then forming a suspension of the wetted fibers in a liquid bath prior to fabrication of a sheet.
  • Process as described in claim 1 including the step of first mechanically dispersing the fibers in a gaseous fluid current and then depositing the fibers on the moving support by the current of gas.
  • Process as described in claim 1 including the step of wetting the fibers by forcing a liquid through the web during movement of the support while the web is in the wetting bath.
  • Process as described in claim 1 including the further steps of storing the fibers after removal from the support in a highly concentrated suspension and then diluting the suspension prior to fabrication of the sheet.
  • Process as described in claim 1 including the step of removing the fibers from the moving support by a current of liquid passing through the support from the interior thereof toward the exterior, the current of liquid and the fibers forming said suspension prior to fabrication of the sheet.
  • An apparatus for conditioning fibers to be placed in suspension in a feed liquid for the making of a continuous nonwoven web and paper by filtration of the suspension of fibers comprising at least one feed hopper containing the fibers, a discharge orifice for said hopper, means for deflocking and dispersing the dry fibers at said discharge orifice in a gaseous fluid, a movable support including at least one endless permeable band, means for depositing on said support as a web the dispersed fibers at said discharge orifice, at least one tank containing a bath of wetting liquid for the fibers, said moving support entering said bath during a part of its movement after deposit of the web for wetting the fibers in the web in the bath, and means for detaching the web from said support after wetting of the fibers and for dispersing the wetted fibers into a feed and suspension conduit for apparatus for form ing a continuous nonwoven sheet.
  • Apparatus as described in claim 9 including a connecting conduit between said discharge orifice and said moving support and means for creating a gaseous current in said conduit for transportation of the fibers from said discharge orifice to said moving support.
  • said connecting conduit including a dispersion chamber for mixing and pretreating the fibers is a gaseous medium.
  • said moving support being an endless screen and a perforated cylinder in said tank, said screen passing around said cylinder.
  • Apparatus as described is claim 14, including means for removing the wetting liquid through said perforated cylinder and for maintaining the liquid at a lower level within said cylinder than exterior of said cylinder.
  • said moving support being two continuous screens moving at the same speed and in engagement over a part of their paths in said wetting bath, the fibers being deposited upstream of said part on at least one of said screens and maintained as a web between said screens during movement in said wetting bath.
  • said means for depositing the fibers on said support including at least one aspirating header beneath said support, the fibers being plated on said support as a web by aspiration of the gaseous fluid into said header.
  • said means for detaching the web from said moving support including means for creating a current of liquid jetted through said support from the interior toward the exterior thereof, the current of liquid entraining the fibers and forming a feed suspension for a nonwoven sheet forming machine.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Paper (AREA)
  • Treatment Of Fiber Materials (AREA)
US00273628A 1971-08-04 1972-07-20 System for dispersing fibers in suspension including air laying web,conditioning fibers in web,dispersing web in liquid Expired - Lifetime US3834869A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7129475A FR2147894B1 (de) 1971-08-04 1971-08-04

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US3834869A true US3834869A (en) 1974-09-10

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US (1) US3834869A (de)
AT (1) AT331630B (de)
BE (1) BE786783A (de)
CA (1) CA994511A (de)
DE (1) DE2238529C3 (de)
ES (1) ES405494A1 (de)
FI (1) FI54336C (de)
FR (1) FR2147894B1 (de)
GB (1) GB1399724A (de)
IL (1) IL40044A (de)
IT (1) IT964881B (de)
LU (1) LU65844A1 (de)
NL (1) NL7210677A (de)
SE (1) SE394297B (de)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1979000309A1 (en) * 1977-11-21 1979-06-14 Envirotech Corp Dual belt pulp washer
US4160297A (en) * 1977-11-21 1979-07-10 Envirotech Corporation Pulp washer
WO1980000461A1 (en) * 1978-08-18 1980-03-20 Envirotech Corp Twin belt vacuum washer
US4246669A (en) * 1978-10-16 1981-01-27 Envirotech Corporation Dual belt pulp washer
US4264290A (en) * 1979-10-31 1981-04-28 American Can Company Fiber velocity imparter device for dry-forming systems
US4276248A (en) * 1979-10-31 1981-06-30 American Can Company Methods for forming fibrous webs
US4324116A (en) * 1978-08-18 1982-04-13 Envirotech Corporation Twin belt vacuum washer
US4482308A (en) * 1983-01-25 1984-11-13 The James River Corporation Apparatus for forming dry laid webs
US4627953A (en) * 1983-01-25 1986-12-09 The James River Corporation Method for forming dry laid webs
US4640810A (en) * 1984-06-12 1987-02-03 Scan Web Of North America, Inc. System for producing an air laid web
US4658477A (en) * 1983-09-21 1987-04-21 Tempo Sanys Method of making a hydrophilic cotton "fleece", and a fleece obtained in accordance with the employment of this method, and pieces of cotton of any form which are obtained by cutting this fleece up
US5010623A (en) * 1989-06-01 1991-04-30 Marzoli Pietro B Textile fibre mixing apparatus
WO1991012944A1 (en) * 1990-02-23 1991-09-05 Wellman Machinery Of Michigan Apparatus and method for applying preform fibers
US5205018A (en) * 1989-12-22 1993-04-27 Trutzschler Gmbh & Co. Kg Apparatus for making a lap from textile fibers
US5229052A (en) * 1990-02-23 1993-07-20 Wellman Machinery Of Michigan, Inc. Apparatus and method for applying multiple type fibers to a foraminous surface
US6193174B1 (en) * 1998-06-30 2001-02-27 E. I. Du Pont De Nemours And Company Air handling system for an advanced web former
EP1464240A1 (de) 2003-04-03 2004-10-06 Hauni Maschinenbau AG Verfahren und Vorrichtung zur Herstellung eines Vlieses für die Herstellung von Filterstäben
EP1464241A1 (de) 2003-04-03 2004-10-06 Hauni Maschinenbau AG Verfahren zur Herstellung eines Vlieses für die Herstellung von Filtern der tabakverarbeitenden Industrie sowie Filterstrangherstelleinrichtung
WO2012104255A1 (en) * 2011-01-31 2012-08-09 Rockwool International A/S Method and apparatus for removing shot from mineral fibre material
US20130221567A1 (en) * 2010-07-30 2013-08-29 Rockwool International A/S Method for Manufacturing a Fibre-Containing Element and Element Produced by that Method
US10280536B2 (en) 2015-05-06 2019-05-07 Micro Dryer, LLC Spraying water on ginned cotton

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE401918B (sv) * 1976-01-19 1978-06-05 Rockwool Ab Sett att framstella en mineralfiberprodukt
JPH0791796B2 (ja) * 1987-06-05 1995-10-04 徳七 山崎 製紙用紙料の堆積装置

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4160297A (en) * 1977-11-21 1979-07-10 Envirotech Corporation Pulp washer
WO1979000309A1 (en) * 1977-11-21 1979-06-14 Envirotech Corp Dual belt pulp washer
US4324116A (en) * 1978-08-18 1982-04-13 Envirotech Corporation Twin belt vacuum washer
WO1980000461A1 (en) * 1978-08-18 1980-03-20 Envirotech Corp Twin belt vacuum washer
WO1980000460A1 (en) * 1978-08-18 1980-03-20 Envirotech Corp Twin belt vacuum washer
US4246669A (en) * 1978-10-16 1981-01-27 Envirotech Corporation Dual belt pulp washer
US4276248A (en) * 1979-10-31 1981-06-30 American Can Company Methods for forming fibrous webs
US4264290A (en) * 1979-10-31 1981-04-28 American Can Company Fiber velocity imparter device for dry-forming systems
US4482308A (en) * 1983-01-25 1984-11-13 The James River Corporation Apparatus for forming dry laid webs
US4627953A (en) * 1983-01-25 1986-12-09 The James River Corporation Method for forming dry laid webs
US4658477A (en) * 1983-09-21 1987-04-21 Tempo Sanys Method of making a hydrophilic cotton "fleece", and a fleece obtained in accordance with the employment of this method, and pieces of cotton of any form which are obtained by cutting this fleece up
US4679278A (en) * 1983-09-21 1987-07-14 Tempo Sanys Method of making a hydrophilic cotton fleece
US4640810A (en) * 1984-06-12 1987-02-03 Scan Web Of North America, Inc. System for producing an air laid web
US5010623A (en) * 1989-06-01 1991-04-30 Marzoli Pietro B Textile fibre mixing apparatus
US5205018A (en) * 1989-12-22 1993-04-27 Trutzschler Gmbh & Co. Kg Apparatus for making a lap from textile fibers
WO1991012944A1 (en) * 1990-02-23 1991-09-05 Wellman Machinery Of Michigan Apparatus and method for applying preform fibers
US5229052A (en) * 1990-02-23 1993-07-20 Wellman Machinery Of Michigan, Inc. Apparatus and method for applying multiple type fibers to a foraminous surface
US6193174B1 (en) * 1998-06-30 2001-02-27 E. I. Du Pont De Nemours And Company Air handling system for an advanced web former
US20060010654A1 (en) * 2003-04-03 2006-01-19 Hauni Maschinenbau Ag Continuous rod machine arrangement for producing nonwoven filters
EP1464241A1 (de) 2003-04-03 2004-10-06 Hauni Maschinenbau AG Verfahren zur Herstellung eines Vlieses für die Herstellung von Filtern der tabakverarbeitenden Industrie sowie Filterstrangherstelleinrichtung
US20040235631A1 (en) * 2003-04-03 2004-11-25 Hauni Maschinenbau Ag Method and a continuous rod machine arrangement for producing nonwoven filters
US20040237269A1 (en) * 2003-04-03 2004-12-02 Hauni Maschinenbau Ag Method and machine for producing a nonwoven for the filter rod production
EP1464240A1 (de) 2003-04-03 2004-10-06 Hauni Maschinenbau AG Verfahren und Vorrichtung zur Herstellung eines Vlieses für die Herstellung von Filterstäben
EP1683432A1 (de) * 2003-04-03 2006-07-26 Hauni Maschinenbau Aktiengesellschaft Verfahren und Vorrichtung zur Herstellung eines Vlieses für die Herstellung von Filterstäben
US7318797B2 (en) * 2003-04-03 2008-01-15 Hauni Maschinenbau Ag Continuous rod machine arrangement for producing nonwoven filters
US20130221567A1 (en) * 2010-07-30 2013-08-29 Rockwool International A/S Method for Manufacturing a Fibre-Containing Element and Element Produced by that Method
US9238333B2 (en) * 2010-07-30 2016-01-19 Rockwool International A/S Method for manufacturing a fibre-containing element and element produced by that method
WO2012104255A1 (en) * 2011-01-31 2012-08-09 Rockwool International A/S Method and apparatus for removing shot from mineral fibre material
US10280536B2 (en) 2015-05-06 2019-05-07 Micro Dryer, LLC Spraying water on ginned cotton

Also Published As

Publication number Publication date
SE394297B (sv) 1977-06-20
FI54336B (fi) 1978-07-31
IL40044A0 (en) 1972-10-29
LU65844A1 (de) 1973-01-15
NL7210677A (de) 1973-02-06
FI54336C (fi) 1978-11-10
DE2238529C3 (de) 1975-11-27
AT331630B (de) 1976-08-25
DE2238529B2 (de) 1975-04-17
ES405494A1 (es) 1975-07-16
FR2147894B1 (de) 1974-10-11
IT964881B (it) 1974-01-31
IL40044A (en) 1976-01-30
FR2147894A1 (de) 1973-03-11
DE2238529A1 (de) 1973-02-15
CA994511A (fr) 1976-08-10
GB1399724A (en) 1975-07-02
ATA674072A (de) 1975-11-15
BE786783A (fr) 1972-11-16

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