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US20130140725A1 - Nozzle plate - Google Patents

Nozzle plate Download PDF

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Publication number
US20130140725A1
US20130140725A1 US13/699,668 US201113699668A US2013140725A1 US 20130140725 A1 US20130140725 A1 US 20130140725A1 US 201113699668 A US201113699668 A US 201113699668A US 2013140725 A1 US2013140725 A1 US 2013140725A1
Authority
US
United States
Prior art keywords
nozzle
nozzle plate
range
opening
nozzle opening
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.)
Abandoned
Application number
US13/699,668
Other languages
English (en)
Inventor
Maren Heinemann
Arne Braun
Thomas König
Karl-Robert Boos
Lars Lachmann
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.)
Bayer Innovation GmbH
Original Assignee
Bayer Innovation GmbH
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 Bayer Innovation GmbH filed Critical Bayer Innovation GmbH
Assigned to BAYER INNOVATION GMBH reassignment BAYER INNOVATION GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LACHMANN, LARS, BRAUN, ARNE, HEINEMANN, MAREN, DR., KOENIG, THOMAS, DR., BOOS, KARL-ROBERT
Publication of US20130140725A1 publication Critical patent/US20130140725A1/en
Abandoned legal-status Critical Current

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Classifications

    • B29C47/30—
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/05—Filamentary, e.g. strands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/345—Extrusion nozzles comprising two or more adjacently arranged ports, for simultaneously extruding multiple strands, e.g. for pelletising
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/01—Manufacture of glass fibres or filaments
    • C03B37/011—Manufacture of glass fibres or filaments starting from a liquid phase reaction process, e.g. through a gel phase
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/08—Bushings, e.g. construction, bushing reinforcement means; Spinnerettes; Nozzles; Nozzle plates
    • C03B37/083—Nozzles; Bushing nozzle plates
    • 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
    • D01D4/00—Spinnerette packs; Cleaning thereof
    • D01D4/02—Spinnerettes
    • 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
    • D01D4/00—Spinnerette packs; Cleaning thereof
    • D01D4/02—Spinnerettes
    • D01D4/027—Spinnerettes containing inserts
    • 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
    • D01D5/06—Wet spinning methods
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
    • D01F9/08—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of inorganic material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2083/00—Use of polymers having silicon, with or without sulfur, nitrogen, oxygen, or carbon only, in the main chain, as moulding material
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/113—Silicon oxides; Hydrates thereof
    • C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
    • C01B33/14—Colloidal silica, e.g. dispersions, gels, sols
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/113—Silicon oxides; Hydrates thereof
    • C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
    • C01B33/14—Colloidal silica, e.g. dispersions, gels, sols
    • C01B33/157—After-treatment of gels

Definitions

  • the present invention provides a nozzle plate and use of the nozzle plate for producing continuous filaments, preferably silica gel fibers.
  • Patent DE19609551C1 and published patent application DE102004063599A1 disclose a method for producing silica gel fibers.
  • the method comprises a plurality of steps.
  • a spinning composition is produced which, in a second step, is pressed from a pressure vessel through nozzles, where it emerges in the form of filaments.
  • the filaments have a diameter of approx. 10 to 100 ⁇ m.
  • FIG. 2 of the published patent application shows a schematic diagram of the nozzle plate and an individual hole-type nozzle in cross-section.
  • This nozzle plate described in the prior art exhibits disadvantages.
  • the emerging spinning composition wets the planar zone around the nozzle orifice.
  • Spinning composition collects around the orifice until, under the effect of gravity, it gradually becomes detached from the nozzle orifice and falls to the ground in the form of a drop which takes a spun filament with it.
  • the individual nozzles here exhibit a different behavior over time.
  • There are individual nozzles from which a filament immediately emerges the thickness of which is, however, initially nonuniform, since some of the emerging spinning composition sticks behind on the region around the nozzle orifice and, apart from a thin film, only becomes detached from the nozzle plate after varying lengths of time.
  • the spinning composition located in the region around the nozzle orifice may impair filament formation during the entire spinning procedure if said spinning composition only becomes very incompletely detached from the nozzle plate and the composition which is left behind comes into contact with the filament. This may give rise to disruption of filament formation and movement which may go as far as a plurality of filaments becoming tangled or the periodic formation of drops.
  • the present invention accordingly provides a nozzle plate comprising at least one nozzle with a nozzle opening, wherein the nozzle opening has a cross-sectional area of size A 1 , wherein a tear-off edge with an angle ⁇ in the range from 5° to 90° extends around the nozzle opening, wherein the area which immediately adjoins the nozzle opening outside the nozzle and extends around the nozzle opening has an area of size A 2 , characterized in that the ratio A 2 /A 1 is less than 20.
  • a composition is pressed outwards out of the nozzle through the nozzle opening.
  • the size of the nozzle opening determines the thickness of the strand emerging outwards out of the nozzle.
  • the nozzle opening has a cross-sectional area of size A 1 .
  • the spinning composition may be pressed through the spinning nozzle in various ways.
  • a pressure vessel which is pressurized with gas, is conventionally used. It is likewise possible to press the spinning composition through the nozzle plate with a suitable pump.
  • a plurality of pumps are suitable for this purpose, such as for example piston pumps, gear pumps, eccentric pumps and screw pumps. Gear pumps are preferably used. It is likewise possible to press the spinning composition through the nozzles from a cylindrical container by means of a piston.
  • a tear-off edge is therefore located around the nozzle opening and the area outside the nozzle opening which extends around the nozzle opening is kept as small as possible.
  • a tear-off edge with a minimum area of the orifice region may in principle be achieved in that the nozzle takes the form of a channel which extends perpendicularly through the tip of a straight cone (see for example FIG. 3( a )).
  • the ratio A 2 /A 1 cannot be minimized at will.
  • FIGS. 3( b ) and 5 The lower part of FIG. 3( b ) shows a nozzle in cross-section, in which a ring with a finite width extends around the nozzle opening.
  • FIG. 5 shows a plan view from below of the same nozzle.
  • the nozzle opening has a cross-sectional area of size A 1 while the ring has an area of size A 2 .
  • the ratio A 2 /A 1 is less than 20.
  • the ratio A 2 /A 1 is preferably less than 15, particularly preferably less than 10, very particularly preferably less than 5 and most preferably less than 1.
  • the nozzle plate according to the invention preferably comprises a plurality of identical nozzles with the above-described features.
  • the number of nozzles is for example in the range from 1 to 1000, more preferably from 4 to 100.
  • the nozzles may be produced by drilling and/or milling operations in the nozzle plate.
  • the nozzle plate is preferably of modular construction. This means that the nozzle plate has openings into which nozzle inserts may be inserted. It is for example conceivable to shrink-fit or screw the nozzle inserts into the nozzle plate.
  • nozzle openings shown have a round cross-section.
  • a round cross-section is always preferred, but it is however also conceivable to make the cross-section in any other conceivable shape, in particular oval. It is likewise conceivable to combine features of individual illustrated embodiments to create further embodiments according to the invention which are not shown.
  • FIG. 1 is a schematic diagram of a preferred embodiment of a nozzle plate according to the invention in plan view.
  • the nozzle plate is round and has 19 nozzles.
  • FIG. 2 is a schematic diagram of the nozzle plate from FIG. 1 in cross-section along the dashed line.
  • the individual nozzles in each case comprise a channel which tapers conically downwards.
  • the angle ⁇ of the tear-off edge is 90°.
  • a ring which is of the smallest possible width so that the least possible wetting occurs.
  • the cylindrical region of the nozzle channel has been lengthened in comparison with the embodiments of FIGS. 3( a ) and 3 ( b ). This results in a larger L/D ratio.
  • the L/D ratio of the cylindrical region is in the range from 0.5 to 10, preferably in the range from 1 to 5, particularly preferably in the range from 1.5 to 3.
  • the areas A 1 and A 2 extend parallel to one another. It is, however, also conceivable for the area A 2 to extend at an angle to area A 1 . This is shown by way of example in FIG. 4( a ).
  • the angle ⁇ is preferably in the range from 0° to 80°, particularly preferably in the range from 0° to 60°.
  • the area A 2 is curved, as shown by way of example in FIG. 4( b ). It is, however, important for there to be an edge extending around the nozzle opening which acts as a tear-off edge for the filaments emerging from the nozzle opening. As illustrated by the example of the embodiment of FIG. 3( a ), this edge is characterized by the angle ⁇ .
  • the areas A 1 and A 2 extend parallel to one another and wetting of the area A 2 is minimized according to the invention in that the ratio A 2 /A 1 is less than 20, preferably less than 15, particularly preferably less than 10, very particularly preferably less than 5 and most preferably less than 1.
  • FIG. 5 is a schematic diagram of a nozzle according to FIGS. 3( b ), 3 ( d ), 3 ( e ), 4 ( a ) and 4 ( b ) in plan view from below.
  • FIG. 6 shows an enlarged portion of the nozzle plate according to the invention from FIGS. 1 and 2 in cross-section through the nozzles.
  • FIG. 7 shows a preferred embodiment of an individual nozzle which takes the form of a modular insert which may be inserted into a corresponding passage through a plate.
  • the nozzle insert comprises a vertically extending channel.
  • the channel would be supplied from above with spinning composition, which would then leave from the lower region of the channel under pressure.
  • the shape of the channel is initially cylindrical in the direction of flow, then tapers conically with an angle ⁇ to the vertical in the range from 10° to 80°, preferably in the range from 20° to 70°, particularly preferably in the range from 30° to 60°, until the diameter D of the channel cross-section is reduced to a size in the range from 0.05 mm to 0.5 mm, preferably in the range from 0.1 to 0.3 mm, particularly preferably in the range from 0.12 to 0.18.
  • the conical region of the channel is followed by a cylindrical region of length L.
  • the same preferred L/D ratios as were discussed in the example relating to FIG. 3 apply to the embodiment shown in FIG. 7 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Silicon Compounds (AREA)
US13/699,668 2010-05-26 2011-05-24 Nozzle plate Abandoned US20130140725A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102010021636.4 2010-05-26
DE102010021636A DE102010021636A1 (de) 2010-05-26 2010-05-26 Düsenplatte
PCT/EP2011/058504 WO2011147848A1 (de) 2010-05-26 2011-05-24 Düsenplatte

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/058504 A-371-Of-International WO2011147848A1 (de) 2010-05-26 2011-05-24 Düsenplatte

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US15/437,753 Division US10081884B2 (en) 2010-05-26 2017-02-21 Method of producing a filament comprising a silica gel-fiber

Publications (1)

Publication Number Publication Date
US20130140725A1 true US20130140725A1 (en) 2013-06-06

Family

ID=44532760

Family Applications (2)

Application Number Title Priority Date Filing Date
US13/699,668 Abandoned US20130140725A1 (en) 2010-05-26 2011-05-24 Nozzle plate
US15/437,753 Active US10081884B2 (en) 2010-05-26 2017-02-21 Method of producing a filament comprising a silica gel-fiber

Family Applications After (1)

Application Number Title Priority Date Filing Date
US15/437,753 Active US10081884B2 (en) 2010-05-26 2017-02-21 Method of producing a filament comprising a silica gel-fiber

Country Status (12)

Country Link
US (2) US20130140725A1 (ru)
EP (1) EP2576875A1 (ru)
JP (1) JP5785612B2 (ru)
CN (1) CN102933754B (ru)
AU (1) AU2011257297A1 (ru)
BR (1) BR112012029977A2 (ru)
CA (1) CA2800635A1 (ru)
DE (1) DE102010021636A1 (ru)
IL (1) IL223252A0 (ru)
MX (1) MX2012013727A (ru)
RU (1) RU2573974C2 (ru)
WO (1) WO2011147848A1 (ru)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019220245A1 (en) * 2018-05-18 2019-11-21 Reliance Industries Limited A spinneret

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103526307B (zh) * 2013-10-30 2016-05-18 江苏长乐纤维科技有限公司 一种poy纺丝方法
CN104532368B (zh) * 2015-01-27 2018-01-09 嘉兴学院 一种装卸式可调长梭型溶液喷射纺丝喷嘴及其使用方法
CN107699963A (zh) * 2017-10-24 2018-02-16 安徽宏远无纺布业有限公司 一种用于无纺布喷丝板的喷丝孔
DE102018117114A1 (de) * 2018-07-16 2020-01-16 Eisenmann Se Vorrichtung zur Unterstützung der Partikelagglomeration, Filtervorrichtung und Behandlungsanlage hiermit
CN116323227B (zh) * 2020-09-28 2025-07-29 艾仕得涂料系统有限责任公司 包含硼硅酸盐玻璃的喷嘴板

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GB1126609A (en) * 1966-07-20 1968-09-11 Du Pont Spinneret
DE2324599A1 (de) * 1973-05-16 1974-12-05 Zimmer Ag Spinnduesenplatte fuer duesenpakete von schmelzspinnanlagen und verfahren zu ihrer herstellung
JPS60139819A (ja) * 1983-12-28 1985-07-24 Denki Kagaku Kogyo Kk 無機連続繊維の製造方法およびその装置
JPH0735608B2 (ja) * 1985-11-05 1995-04-19 電気化学工業株式会社 アルミナシリカ繊維前駆体の製造方法
JPS62125007A (ja) * 1985-11-26 1987-06-06 Nichibi:Kk 紡糸ノズル
JPH0645473B2 (ja) * 1987-12-08 1994-06-15 旭硝子株式会社 ゾルゲル法シリカ繊維製造用紡糸ノズル装置
JPH02275729A (ja) * 1989-04-14 1990-11-09 Nitto Boseki Co Ltd ガラス繊維紡糸用ノズルプレート
SG50447A1 (en) 1993-06-24 1998-07-20 Hercules Inc Skin-core high thermal bond strength fiber on melt spin system
DE19609551C1 (de) 1996-03-12 1997-07-17 Fraunhofer Ges Forschung Biologisch degradierbare und/oder biologisch resorbierbare (Endlos)Fasern, Verfahren zu deren Herstellung und deren Verwendung als Verstärkungsfasern
NZ508818A (en) * 2000-12-12 2002-10-25 Humatro Corp Electro-spinning process for making starch filaments for flexible structure
AU2002368005A1 (en) * 2002-06-10 2003-12-22 Tecnofil Srl Spinning device
CN2599021Y (zh) * 2002-12-26 2004-01-14 中国石化上海石油化工股份有限公司 一种熔融纺丝组件
DE102004063599B4 (de) 2004-12-30 2007-07-12 Bayer Innovation Gmbh Verkürzte Wundheilungsprozesse mittels neuartiger Faservliese
CN2813642Y (zh) * 2005-06-16 2006-09-06 厦门翔鹭化纤股份有限公司 一种用于生产十字型吸湿排汗短纤的喷丝板
DE102006012052A1 (de) * 2006-03-08 2007-09-13 Lüder GERKING Spinnvorrichtung zur Erzeugung feiner Fäden durch Spleißen
CN201386153Y (zh) * 2009-04-03 2010-01-20 东华大学 一种用于生产“工”字形纤维的喷丝板

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019220245A1 (en) * 2018-05-18 2019-11-21 Reliance Industries Limited A spinneret

Also Published As

Publication number Publication date
JP5785612B2 (ja) 2015-09-30
IL223252A0 (en) 2013-02-03
RU2573974C2 (ru) 2016-01-27
JP2013531742A (ja) 2013-08-08
BR112012029977A2 (pt) 2016-08-02
CN102933754A (zh) 2013-02-13
US20170167052A1 (en) 2017-06-15
EP2576875A1 (de) 2013-04-10
DE102010021636A1 (de) 2011-12-01
RU2012156366A (ru) 2014-07-10
MX2012013727A (es) 2013-01-22
CA2800635A1 (en) 2011-12-01
AU2011257297A1 (en) 2013-01-10
US10081884B2 (en) 2018-09-25
WO2011147848A1 (de) 2011-12-01
CN102933754B (zh) 2016-08-03

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Owner name: BAYER INNOVATION GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HEINEMANN, MAREN, DR.;BRAUN, ARNE;KOENIG, THOMAS, DR.;AND OTHERS;SIGNING DATES FROM 20120512 TO 20130201;REEL/FRAME:030463/0174

STCB Information on status: application discontinuation

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