WO2005111280A1 - Filière pour filage au mouillé de fibre de compose acrylique de type gaine-noyau - Google Patents

Filière pour filage au mouillé de fibre de compose acrylique de type gaine-noyau Download PDF

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Publication number
WO2005111280A1
WO2005111280A1 PCT/JP2005/008958 JP2005008958W WO2005111280A1 WO 2005111280 A1 WO2005111280 A1 WO 2005111280A1 JP 2005008958 W JP2005008958 W JP 2005008958W WO 2005111280 A1 WO2005111280 A1 WO 2005111280A1
Authority
WO
WIPO (PCT)
Prior art keywords
sheath
hole
core
holes
component supply
Prior art date
Application number
PCT/JP2005/008958
Other languages
English (en)
Japanese (ja)
Inventor
Ryo Ochi
Sadatoshi Nagamine
Original Assignee
Mitsubishi Rayon Co., Ltd.
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 Mitsubishi Rayon Co., Ltd. filed Critical Mitsubishi Rayon Co., Ltd.
Priority to JP2006513604A priority Critical patent/JP4498354B2/ja
Publication of WO2005111280A1 publication Critical patent/WO2005111280A1/fr

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Classifications

    • 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
    • D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
    • D01D5/30—Conjugate filaments; Spinnerette packs therefor
    • D01D5/34—Core-skin structure; Spinnerette packs therefor

Definitions

  • the present invention relates to an improved wet spinning die used for producing an acrylic core-sheath conjugate fiber.
  • a distribution plate that already has a core component distribution hole and a sheath component distribution hole, and a core component that communicates with the sheath component supply hole and the core component distribution hole that communicate with the sheath component distribution hole, are divided.
  • An upper base plate having a large number of core component supply holes arranged in parallel in a plurality of rows to be supplied; and a composite flow discharge hole group having a composite flow discharge hole axially aligned with the core component supply hole of the upper die plate.
  • a spinneret configured with a spacer has been proposed (see Patent Document 1).
  • this spinneret is used when melt-spinning a core-sheath composite such as polyester fiber or polyamide fiber or when wet spinning an acrylic core-sheath composite fiber having a relatively small number of single fibers.
  • the spinning speed is slower than the melt spinning, and the number of single fibers is more than 5000.
  • the sheath component is merged around the core component flow from the core component supply hole to form a composite flow, multiple rows of core component supply holes with a significantly large number of holes are arranged in parallel. In this case, it is difficult to uniformly introduce the sheath component into each composite flow discharge hole, and the core-sheath ratio fluctuates or the core portion is eccentric. Core-sheath composite fibers.
  • Patent Document 1 JP-A-9-21015
  • Patent Document 2 JP-A-11-350241 Disclosure of the invention
  • the present invention is an improvement on the problems in the spinneret described above, and an object of the present invention is to eliminate variations in the core-sheath composite structure between single fibers and improve uniformity of the core-sheath composite structure.
  • Wet spinning of acrylic core-sheath conjugate fiber with excellent productivity, stable and easy to produce, and simple structure, easy to manufacture, and with more than 5,000 spinning holes To provide a base.
  • the present invention is a spinneret for wet spinning of acryl core-sheath conjugate fiber in which at least one of the core component and the sheath component is an acrylonitrile polymer, and has a distribution plate having a core component distribution hole and a sheath component distribution hole.
  • the core component supply holes that communicate with the core component distribution holes and supply the core components in a divided manner are arranged in parallel in multiple rows, forming a square block with a hole density of 100 to 150 Zcm 2 and a hole count of 100 to 500 Z blocks.
  • An upper die plate arranged at the intersection and a plurality of blocks are provided with a plurality of blocks having an inlet hole diameter larger than an outlet hole diameter of the core component supply hole at a hole position corresponding to each core component supply hole of the upper die plate.
  • a lower base plate having a component inflow groove and a sheath component introduction groove communicating with the sheath component inflow groove and introducing a sheath component between the composite flow discharge hole rows; an outlet of the core component supply hole of the upper base plate; and a lower base plate.
  • An acrylic core characterized by comprising a spacer that forms a gap for a flow path through which a sheath component flows into the composite flow discharge hole while causing the inlet of the composite flow discharge hole to close. Wet spinneret for sheath composite fibers.
  • the number of single fibers is increased to 5,000 to 30,000 due to the increase in the number of spinning holes, so-called multi-hole fiber, and the number of single fibers is large.
  • Acrylic core-sheath composite fiber with excellent uniformity without variation in core-sheath composite structure can be spun stably and with good productivity, and can cope with a wide range of spinning conditions for various core components and sheath components. Accordingly, it is possible to provide a core-sheath composite spinneret having a high pore density and a large number of holes, which can be easily manufactured and has a simple structure.
  • FIG. 1 is a perspective view (partial sectional view) of a nozzle of a spinneret of the present invention.
  • FIG. 2 is a partially enlarged sectional view showing a structure of a main part of a spinneret of the present invention.
  • FIG. 3 is a plan view showing a calculation range of the example and a graph showing the result of the example. Explanation of symbols
  • the spinneret of the present invention is used when an acrylic core-sheath conjugate fiber is produced by wet spinning.
  • an upper spinneret and a lower spinneret arranged via a spacer. Has structural features.
  • FIG. 1 is a perspective view (partial sectional view) of a nozzle of a spinneret of the present invention
  • FIG. 2 is a partially enlarged cross-sectional view showing a structure of a main part of the spinneret of the present invention.
  • 1 is a sheath component supply hole
  • 2 is a core component supply hole
  • 3 is an upper mouthpiece plate
  • 4 is a composite flow discharge hole
  • 5 is a sheath component inflow groove
  • 6 is a sheath component introduction groove
  • 7 is a lower mouthpiece plate
  • 8 indicates a spacer.
  • the upper die plate 3 has a core component supply hole 2 for dividing and supplying a core component distributed from the core component distribution holes of the distribution plate laminated on the upper die plate.
  • the core component supply holes are arranged in a plurality of rows in parallel, and the core component supply holes are arranged in parallel to form a substantially rectangular square having a hole density of 100 to 150 Zcm 2 and a number of holes of 100 to 500, preferably 100 to 300.
  • a block is formed by arranging core component supply holes in parallel with a plurality of columns, a plurality of arrangements with different numbers of holes are arranged so that the positions of the core component supply holes in adjacent rows are shifted and staggered. It is preferable that the rows are arranged in parallel or the rows having the same number of holes are alternately shifted in position and arranged in parallel in a plurality of rows.
  • the upper die plate is provided with 20 to 60, preferably 25 to 40, blocks of core component supply holes in number of blocks, and 5,000 to 30,000, preferably 6,000 to 10,000 in total number of holes.
  • a core component supply hole is provided.
  • the blocks to be arranged are preferably a combination of blocks having the same number of holes, but may be a combination of blocks having different numbers of holes depending on the shape of the die plate, the mounting method, and the like.
  • the number of core component supply holes arranged in parallel in one core component supply hole block is not particularly limited, but the number of core component supply holes in one row should be 10 to 20. Is preferred for forming a uniform core-sheath composite flow.
  • the core component supply hole in the upper die plate has an inlet hole diameter of 300 to 500 111 and an outlet hole diameter of 50 to 90 ⁇ m. It is preferable for discharging and supplying as a component stream.
  • the blocks of the core component supply holes need to be arranged as evenly as possible on the base plate, and a plurality of blocks are arranged in a row and in parallel so as to be evenly arranged. Further, from the viewpoint of drilling holes, it is preferable that the base plate has a square shape.
  • the upper base plate 3 has a sheath component supply hole 1 communicating with the sheath component distribution hole at a position corresponding to each corner of the square which is a section intersection of the square block of the core component supply hole.
  • the sheath component supply hole 1 in the upper die plate 3 preferably has a hole diameter of 2.0 to 4.0 mm in order to supply the sheath component uniformly and promptly.
  • the lower base plate 7 is a base plate having the same shape as the upper base plate superposed on the upper base plate 3 via the spacer 8, and has a hole corresponding to each core component supply hole 2 of the upper base plate 3.
  • a composite flow discharge hole 4 having an inlet diameter larger than the outlet diameter of the core component supply hole is arranged, and accordingly, the composite flow discharge hole 4 is formed as a plurality of blocks and has a hole density of 100 to 100 corresponding to the core component supply hole.
  • 150 pcs / cm 2 Number of holes 100-500 pcs Z block, preferably 100-300 pcs Z block, total number of holes 5 000-30000 pcs, preferably ⁇ 600-10 000 pcs.
  • sheath component inflow groove 5 that surrounds each block of composite flow discharge holes on its
  • sheath component introduction groove 6 which communicates with the sheath component inflow groove and introduces the sheath component between the composite flow discharge holes in each block.
  • the composite flow discharge hole 4 in the lower die plate 7 is a hole that forms and discharges a composite flow of the core component and the sheath component, and has at least an inlet hole diameter of 300 to 500 / ⁇ and an outlet hole diameter of It is preferably 50 to 90 m for discharging as a stable core-sheath composite flow.
  • the sheath component inflow groove 5 surrounding the block of the composite flow discharge hole 4 has a groove width of 2.0 to 5.0 mm, and the composite flow discharge in the block.
  • the sheath component introduction groove 6 for introducing the sheath component between the outlet rows is preferably 0.3 to 1.0 mm in groove width in order to form a stable core-sheath composite flow.
  • the sheath component introduction groove 6 may be further provided at an appropriate position in the composite flow discharge hole array so as to be orthogonal to the hole array.
  • the core component is guided from the core component distribution holes of the distribution plate to the respective core component supply holes 2 arranged as blocks of the core component supply holes of the upper die plate 3, It is supplied from the outlet of the core component supply hole 2 to the inlet of the composite flow discharge hole 4 as a linear discharge flow.
  • the sheath component is supplied from the sheath component distribution hole of the distribution plate to the sheath component inflow groove 5 surrounding the block of the composite flow discharge hole 4 of the lower mouth plate 7 through the sheath component supply hole 1 of the upper mouth plate 3.
  • the flow is led to the sandwiching gap to give a pressure loss, so that the flow is rectified and uniformly supplied to each composite flow discharge hole 4.
  • the rectified sheath component flow flows into the composite flow discharge hole 4 while surrounding the core component flow supplied as a discharge flow from the outlet of the core component supply hole 2 while surrounding the core component flow, forming a core-sheath composite flow, and the composite flow is discharged. It is discharged from the outlet of the hole 7.
  • the gap between the upper base plate 3 and the lower base plate 7 is set to an arbitrary width by the spacer 8 and formed.
  • the first feature of the present invention is that the core component supply hole and the composite flow discharge hole are provided in the form of a block so that the sheath component is uniformly guided to each composite flow discharge hole where the core component is supplied as a discharge flow. And a uniform core-sheath composite flow can be formed.
  • the core component supply hole and the composite flow discharge hole are provided in the form of a block so that the sheath component is uniformly guided to each composite flow discharge hole where the core component is supplied as a discharge flow. And a uniform core-sheath composite flow can be formed.
  • the present invention by arranging the core component supply holes and the composite flow discharge holes in the form of a block, a uniform core-sheath composite flow is formed and the number of spinning holes is 5,000 to 30 000.
  • the number of spinning holes is 5,000 to 30 000.
  • the second feature of the present invention is that the spinneret is used while the number of core component supply holes provided in the upper base plate and the number of combined flow discharge holes provided in the lower base plate are 5,000 to 30,000, respectively. It is advantageous in that it can be obtained economically. For spinnerets, it is also important that the spinnerets themselves be easy to manufacture and economically inexpensive in order to improve productivity.
  • the spinneret for wet spinning of fibers usually has a relatively low pressure at the time of ejection, so that the ejection plate having a thinner mouthplate can be easily formed.
  • the spinneret for wet spinning of conjugate fibers especially core-sheath conjugate fibers
  • the spinneret of the sheath component is rectified by a large pressure loss when passing through a narrow gap, so the die plate only withstands this pressure. Therefore, the cost of forming the discharge holes increases. Therefore, in the spinneret for the wet spinning of the core-sheath composite fiber, a substantial reduction in the manufacturing cost of the spinneret cannot be expected unless the total number of holes is suppressed.
  • the spinneret of the present invention if the upper and lower surfaces of the upper die plate are made flat, only the core component supply hole and the sheath component supply hole are formed, and the lower die plate is formed. If the lower surface is flat, it is manufactured by drilling of composite flow discharge holes, and linear groove cutting of the sheath component inflow groove on the plate surface and the sheath component introduction groove between the composite flow discharge hole rows. .
  • the core component supply hole and the composite flow discharge hole have the same shape, one of the two perforated base plates is perforated with the sheath component supply hole, and the upper base plate,
  • a lower die plate by subjecting the sheath component inflow groove and the sheath component introduction groove to groove cutting.
  • the production of the die according to the present invention is relatively inexpensive and economical. It is.
  • the upper die plate and the lower die plate can be thinned to about 5 mm each depending on the hole diameter, the number of holes, the supply pressure, the material, and the like. This facilitates not only the light weight of the base but also the cleaning work.
  • a third feature of the present invention is that a gap formed between the upper die plate and the lower die plate can be arbitrarily changed by interposing spacers having different thicknesses.
  • the gap between the upper and lower base plates is usually lower because the viscosity of the sheath component is lower. The smaller the viscosity, the higher the viscosity.
  • This interval is set to an optimum value according to various spinning conditions such as the kind and combination of the core component and the sheath component, the concentration, the discharge amount, the discharge amount ratio (core-sheath ratio), and the spinning temperature.
  • the above interval can be easily changed in the range of 30 to 500 / zm simply by replacing a spacer having a thickness of usually 0.03 to 0.5 mm, which can be manufactured at low cost. This makes it possible to handle a wide range of spinning conditions with a single spinneret, which is extremely economical.
  • the spinneret of the present invention is used as a spinneret for producing an acrylic core-sheath composite fiber having both or one of a core component and a sheath component as an acrylonitrile polymer by wet spinning.
  • the spinneret of the present invention can produce an acrylic core-sheath composite fiber having various functions and performances with a high productivity by a combination of a core component and a sheath component.
  • the core component and the sheath component are acrylonitrile-based polymers, different combinations of physical properties, functions, and the like are used.
  • a polymer capable of wet spinning may be used, and examples thereof include a salt-forming butyl polymer and a cellulose-based polymer.
  • Circular pipe pressure drop type AP 128 r? QLZd 4
  • Rectangular flow path pressure loss formula ⁇ ⁇ 64 ⁇ ab x
  • V viscosity (kg's / m 2 )
  • Nozzle 1 280 holes 1.1%
  • the spinneret of the present invention has a spinning hole number of 000 to 30,000, so that the number of single fibers is 5,000 to 30,000 !, the number of single fibers is large, and the acrylic core-sheath composite fiber is wet-spun.
  • the core component or the sheath component is an atalylonitrile polymer
  • various polymers or functional polymers are used as the core component or the sheath component.
  • the production cost of various types of acrylic core-sheath conjugate fibers that exhibit the unique properties of acrylic fibers that cannot be obtained with melt-spun polyester fibers and polyamide core-sheath conjugate fibers, is raised by wet spinning. It is possible to manufacture without any problems.
  • the sheath component is an acrylonitrile-based polymer, it becomes possible to produce an acrylic core-sheath composite fiber provided with various functions by the core component, while maintaining the distinctiveness of acrylic fiber.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Multicomponent Fibers (AREA)

Abstract

Il est prévu une filière pour filage au mouillé capable d’assurer un filage au mouillé stable, à un rendement élevé, d’une fibre de composé acrylique de type gaine-noyau d’excellente uniformité de structure de composé de type gaine-noyau. La filière comprend une planche de distribution répartissant les composants de noyau et les composants de gainage, une planche de filière supérieure cloisonnée en blocs carrés dans laquelle sont disposés les trous d’arrivée des composants de noyau, parallèles les uns aux autres en de multiples rangées, avec une densité de trous de 100 à 150 trous/cm2 et le nombre de trous est compris entre 100 et 500 par bloc, une pluralité de blocs comprennent les trous d‘arrivée des composants de noyau entre 5000 et 30.000 au total disposés en rangées verticales et parallèles, et les trous d’arrivée des composants de gainage sont disposés aux intersections des cloisons des blocs destinés aux trous d’arrivée des composants de noyau, une planche de filière inférieure dans laquelle les trous de refoulement de composite sont disposés, sous forme de blocs, à des positions de trou correspondant aux trous d’arrivée des composants de noyau de la planche de filière supérieure et présentant des rainures d’injection des composants de gainage entourant les blocs des trous de refoulement de composite et des rainures de guidage des composants de gainage introduisant les composants de gainage entre les rangées de trous de refoulement de composite, et une entretoise formant, entre la planche de filière supérieure et la planche de filière inférieure, un jeu pour permettre le passage des composants de gainage dans les trous de refoulement de composite.
PCT/JP2005/008958 2004-05-19 2005-05-17 Filière pour filage au mouillé de fibre de compose acrylique de type gaine-noyau WO2005111280A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006513604A JP4498354B2 (ja) 2004-05-19 2005-05-17 アクリル芯鞘複合繊維の湿式紡糸用口金

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004148458 2004-05-19
JP2004-148458 2004-05-19

Publications (1)

Publication Number Publication Date
WO2005111280A1 true WO2005111280A1 (fr) 2005-11-24

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JP (1) JP4498354B2 (fr)
CN (1) CN100507097C (fr)
WO (1) WO2005111280A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2963161A4 (fr) * 2013-02-26 2016-06-15 Mitsubishi Rayon Co Buse de filage, processus de production d'une masse fibreuse, masse fibreuse et papier

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0921015A (ja) * 1995-07-03 1997-01-21 Mitsubishi Rayon Co Ltd 芯鞘複合紡糸口金
JPH11350241A (ja) * 1998-06-03 1999-12-21 Mitsubishi Rayon Co Ltd 芯鞘複合繊維の湿式紡糸用口金
JP2004197284A (ja) * 2002-12-20 2004-07-15 Kasen Nozuru Seisakusho:Kk 海島型複合繊維用口金装置および該口金装置を用いた海島型複合繊維の製造方法。

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0921015A (ja) * 1995-07-03 1997-01-21 Mitsubishi Rayon Co Ltd 芯鞘複合紡糸口金
JPH11350241A (ja) * 1998-06-03 1999-12-21 Mitsubishi Rayon Co Ltd 芯鞘複合繊維の湿式紡糸用口金
JP2004197284A (ja) * 2002-12-20 2004-07-15 Kasen Nozuru Seisakusho:Kk 海島型複合繊維用口金装置および該口金装置を用いた海島型複合繊維の製造方法。

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2963161A4 (fr) * 2013-02-26 2016-06-15 Mitsubishi Rayon Co Buse de filage, processus de production d'une masse fibreuse, masse fibreuse et papier
EP3208368A3 (fr) * 2013-02-26 2017-09-20 Mitsubishi Chemical Corporation Masse fibreuse

Also Published As

Publication number Publication date
JP4498354B2 (ja) 2010-07-07
JPWO2005111280A1 (ja) 2008-03-27
CN100507097C (zh) 2009-07-01
CN1926267A (zh) 2007-03-07

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