EP1440188B1 - Spinndüse - Google Patents

Spinndüse Download PDF

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Publication number
EP1440188B1
EP1440188B1 EP02800100A EP02800100A EP1440188B1 EP 1440188 B1 EP1440188 B1 EP 1440188B1 EP 02800100 A EP02800100 A EP 02800100A EP 02800100 A EP02800100 A EP 02800100A EP 1440188 B1 EP1440188 B1 EP 1440188B1
Authority
EP
European Patent Office
Prior art keywords
housing
spinneret
expansion body
expansion
plate
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
EP02800100A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1440188A1 (de
Inventor
Bernd Kirchhoff
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.)
Oerlikon Textile GmbH and Co KG
Original Assignee
Saurer GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Saurer GmbH and Co KG filed Critical Saurer GmbH and Co KG
Publication of EP1440188A1 publication Critical patent/EP1440188A1/de
Application granted granted Critical
Publication of EP1440188B1 publication Critical patent/EP1440188B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • D01D4/00—Spinnerette packs; Cleaning thereof

Definitions

  • the invention relates to a spinneret for melt spinning a plurality of strand-like filaments according to the preamble of claim 1.
  • a generic spinneret is known for example from DE 199 32 852 A1.
  • the known spinneret has a housing which serves to receive a nozzle plate, a perforated plate, a filter insert, and an inlet piece.
  • the nozzle plate, the orifice plate and the inlet piece are inserted into the housing and are held by a screw means within the housing.
  • the inner parts of the housing are formed of a material which has a higher thermal expansion coefficient with respect to the housing material. This ensures that in the operating state of the spinneret, which could for example be in the range of 300 ° C, the internal parts within the housing of the spinneret to expand more than the inner parts enclosing housing. As a result, a compressive force is generated, which leads to the sealing of the joints between the inner parts or between the inner parts and the housing.
  • the known spinneret has the disadvantage that always different materials for the production of housing and housing internal parts of the spinneret must be used. Furthermore, in the choice of materials of the internal parts always the requirement for sufficient strength and resistance to the polymer melt to be taken into account. Thus, only materials come into consideration, which have only a small difference in the thermal expansion coefficient. In that regard, the known spinneret is only suitable for very high operating temperatures to produce a sufficient sealing effect.
  • a spinneret is known, in which the spinneret plate and a perforated plate are arranged within a sleeve which is fastened by a screw means on the end face of a melt inlet forming housing part. Between the end face of the housing part and the attached perforated plate and nozzle plate, a seal within the sleeve receiving the inner parts is arranged.
  • the sleeve is formed from a material which has a higher thermal expansion coefficient relative to the housing part and the screw means in order to achieve deformation of the seal between the parts and thus a self-seal when the sleeve is heated.
  • the invention has the object to develop a generic spinneret of the type mentioned in such a way that the inside of a housing mating assembled inner parts are kept self-sealing substantially independent of their materials during operation.
  • At least one expansion body between the housing and one of the inner parts is arranged and that the expansion body is formed of a material which has a higher thermal expansion coefficient compared to the housing material and which generates a pressure force for self-sealing clamping of the nozzle plate and the inlet piece when heated within the housing.
  • the invention is characterized in that the housing of the spinneret and the inner parts of the housing can be made of materials that must meet only the requirements for guiding a melt and for extruding the melt such as strength and durability.
  • the compression force required for self-sealing is effected only when heated by the expansion body.
  • the housing and the inner parts such as the inlet piece and the nozzle plate can be made both of an identical material or else of different materials.
  • the spinneret according to the invention is preferably designed such that upon heating, a compressive force acting substantially in a clamping direction determined by the screw means can be produced.
  • the effect of generating a directed compressive force can be improved by the fact that the expansion body and / or the material of the expansion body have a structure which causes an expansion of the expansion body substantially in one direction when heating. This can be achieved for example in an expansion body by appropriate length / width ratios.
  • the expansion body When using round spinning nozzles, in which the circular nozzle plates are inserted within a cylindrical housing, the expansion body according to an advantageous embodiment of the invention is preferred formed as an expansion ring.
  • the expansion ring is arranged between a cover of the housing or a bottom of the housing and the inlet piece.
  • the expansion body can also be advantageously formed by a plurality of expansion pieces, which are arranged between the inlet piece and a lid of the housing or a bottom of the housing.
  • the expansion body to assign a pressure plate through which the contact surface is formed to the housing or to the inlet piece.
  • the expansion body can either be firmly connected to the housing or fixed to the inlet piece.
  • the housing is formed from a housing material, which compared to the materials of the internal parts - such as the inlet piece and the nozzle plate - has a lower coefficient of thermal expansion.
  • the greater expansion of the internal parts within the housing would create compressive forces on the housing in addition to the expansion body.
  • the spinneret according to the invention is characterized in particular by the fact that the expansion body only has the function of building up a pressure force due to heating.
  • the functions performed by the spinneret for melt-spinning the filaments are not relevant to the expansion body, so that the choice of material for the expansion body may be directed solely to the issues of thermal expansion.
  • Particularly suitable metals or metal alloys such as copper. In order to ensure that a basic strength of the expansion body is maintained even during cleaning operations, such metals and metal alloys are preferably used whose melting temperature is above 500 ° C.
  • Fig. 1 is a sectional view of a first personssgsbeispiels of a spinneret according to the invention is shown.
  • the spinneret has a cylindrical housing 1, which is limited to an upper side by a bottom 6 frontally.
  • the bottom 6 has an opening 13 centrally through the opening 13 in the housing bottom 6 protrudes a projection 20 of an inserted into the housing 1 inlet piece 2 out.
  • the inlet piece 2 is supported via the annular expansion body 8 on the housing bottom 6.
  • the inlet piece 2 has at its protruding outside the housing 1 approach 20 a melt inlet 5, which is connected through an inlet channel 14 and a melt channel 26 with a distribution chamber 15 within the inlet piece 2.
  • a filter insert 9, a perforated plate 10 and a nozzle plate 3 connects on the front side of the inlet piece 2 within the housing 1.
  • an outer peripheral seal 11 is provided between the nozzle plate 3 and the perforated plate 10.
  • the filter insert 9 designed as a screen plate is enclosed by a circumferential seal 29. The seal 29 is disposed between the perforated plate 10 and the inlet piece 2.
  • the nozzle plate 3 is supported via a spring insert 27 on a collar 12 of a screw 7.
  • a gap 28 is formed between the underside of the nozzle plate 3 and the collar 12, which is a measure of the spring travel of the spring insert 27.
  • the spring insert 27 could be formed by an annular spring or by a plurality of springs.
  • the screw 7 is formed as a union nut which engages in a thread 21 on the circumference of the housing 1.
  • the nozzle plate 2 is free at the bottom so that the nozzle holes 3 formed within the nozzle holes 4 form the melt outlet.
  • the housing 1 is placed with the bottom 6 down in a mounting device. Then, the annular expansion body 8, the inlet piece 2, the filter element 9, the perforated plate 10 and the nozzle plate 3 with the spring insert 27 and the associated seals 11 and 29 are inserted one after the other into the housing 1. Finally, the screw 21 is applied to the thread 21 of the housing 1. In this case, the inserted inner parts are biased against each other within the housing 1. Before the spinneret is used for use in a spinning beam, the spinneret is first heated within a furnace to a temperature of about 200 ° C to 250 ° C.
  • the expansion body 8 which is formed, for example, from a copper or a copper alloy, will expand more than the housing 1, which is made, for example, from a steel.
  • the expansion body 8 expands substantially in the direction of the perforated plate 10 and the nozzle plate 3, so that in addition to the biasing force acting in the same direction compressive force is generated.
  • a self-seal is achieved in the parting lines between the inlet piece 2, the perforated plate 9 and the nozzle plate 3.
  • a polymer melt is fed via the melt inlet 5 of the spinneret and passes through the inlet channel 14 and the melt channel 26 in the distribution chamber 15.
  • the filter cartridge 9 is preferably formed by one or more screens with different mesh sizes.
  • the internal parts - such as the inlet piece 2, the perforated plate 10 and the nozzle plate 3 - could be made of a material having a higher coefficient of thermal expansion than the housing 1.
  • the housing Steel, the stainless steel internal parts and the expansion body are also made of stainless steel. This design has the advantage that the resistance of the internal parts is ensured against the polymer melt when using a stainless steel.
  • the expansion ring 8 is fixedly connected to the bottom 6.
  • the melt-carrying parts can be easily disassembled for cleaning and reassembled.
  • the material of the expansion body is to be chosen such that the high cleaning temperatures of about 500 ° C does not lead to any undesirable change in the expansion body.
  • at least the melting temperature of the material of the expansion body should be above 500 ° C.
  • the spring insert 27 is tensioned between the screw means 7 and the nozzle plate 3.
  • the gap 28 formed between the underside of the nozzle plate 3 and the collar 12 of the screw 7 allows additional expansion of the inner parts or the expansion body.
  • FIG. 2 shows the spinneret schematically in a sectional view
  • Fig. 3 shows the spinneret schematically in a plan view.
  • the embodiment shown in Fig. 2 and Fig. 3 is formed as a rectangular spinneret.
  • the spinneret has a rectangular housing 1, which has on the underside a housing bottom 22 with an opening 23 required for extruding the filaments.
  • a rectangular nozzle plate 3 On the housing bottom 22, a rectangular nozzle plate 3, a seal 11, a perforated plate 10, a filter element 9 with seal 29 and an inlet piece 2 is disposed within the housing 1.
  • the inlet piece 2 has in the middle region of the housing 1 a projection 20 which protrudes from the housing 1 and forms a melt inlet 5.
  • the inlet piece 2 For receiving the expansion body 8, which is formed by two separately arranged expansion pieces 8.1 and 8.2, the inlet piece 2 has two juxtaposed recesses 24 and 31, in which the expansion pieces 8.1 and 8.2 are added.
  • the expansion pieces 8.1 and 8.2 are based outside of the inlet piece 2 each on a pressure plate 19 and 30 from.
  • the housing 1 Above the pressure plates 19 and 30, the housing 1 is closed by a housing cover 16.
  • the housing cover 16 is held by pins 25.
  • In the housing cover 16 two adjacent openings 32 and 33, each with an internal thread 21 and 34 are introduced.
  • threads 21 and 34 each engage a screw means 7.1 and 7.2, which act directly on the pressure plates 19 and 30. This preload is achieved within the internal parts used in the housing 1 during assembly.
  • the screw 7.1 and 7.2 are thereby evenly screwed into the threads 21 and 34 of the housing cover 16.
  • the embodiment of the spinnerets according to the invention has a security element to accommodate uncontrolled expansions can.
  • a spring 18 between the screw means 7.1 and the pressure plates 19 and between the screw means 7.2 and the pressure plate 30 is stretched.
  • a gap 28 is formed in each case, which limits the permissible spring travel of the springs 18 and thus allows a maximum expansion of the internal parts.
  • FIG. 4 and 5 show a further embodiment of a spinneret according to the invention. 4 shows schematically a cross-sectional view and FIG. 5 schematically shows a longitudinal sectional view of the embodiment.
  • the following description applies insofar no explicit reference is made to one of the figures for both figures. The components of the same function have been given the same reference numerals for clarity.
  • the exemplary embodiment of the spinneret shown in FIGS. 4 and 5 has a tubular housing 1.
  • the tubular housing 1 is horizontally aligned and closed at the ends by a respective side plate 36.1 and 36.2 and a lid 35.1 and 35.2, wherein between the side plates 36.1 and 36.2 and the covers 35.1 and 35.2 a plurality of compression springs 37 act.
  • the nozzle plate 3 Between the side plates 36.1 and 36.2, the nozzle plate 3, the perforated plate 10, the filter cartridge 9, the inlet piece 2 and a pressure plate 19 are arranged one above the other in the housing 1.
  • the seal 11 and between the perforated plate 10 and the. Inlet 2 the seal 29 is arranged. Wherein the seal 29 surrounds the filter element 9.
  • the distribution chamber 15 forming the inlet piece 2 is connected to an inlet adapter 17 which forms the melt inlet 5 outside the housing 1 and which forms with the inlet piece 2 opening into the distribution chamber 15 inlet channel 14.
  • a nozzle cutout 23 is introduced in the region of the nozzle plate 3 in the housing 1, so that the filament strands emerging from the nozzle bores 4 of the nozzle plate 3 can be extruded without hindrance.
  • the housing 1 has a plurality of openings 33 for receiving in each case a screw means 7.
  • the screw means 7 is connected via a thread 34 with the housing 1.
  • a total of 4 screw 7.1 to 7.4 are provided.
  • each spring 18 is tensioned relative to the pressure plate 19.
  • a plurality of expansion body 8.1 to 8.4 are arranged, which are supported between the inlet piece 2 and the pressure plate 19.
  • the spinneret according to the invention is characterized in that the materials of the items are selectable according to their function. So there is the possibility, each function, such as melt lead, pressure forces build up or secure internal pressure, can be carried out optimally targeted by appropriate choice of material. It is important that a self-sealing effect is achieved by the controlled expansion of the materials used. By this effect, a quick and easy installation of the spinneret is possible at room temperature and thus low bias of the parts. The tightness of the nozzle package is not dependent on which tightening torques are tightened. The spinneret according to the invention is therefore characterized by a high level of operational reliability.
  • the structure of the Ausffihrungsbeiastronom shown spinneret of the invention and the structure of the individual parts is exemplary.
  • the invention covers all spinnerets in which internal parts are clamped within a housing by an additional expansion body self-sealing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
EP02800100A 2001-09-28 2002-09-20 Spinndüse Expired - Lifetime EP1440188B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10148191 2001-09-28
DE10148191 2001-09-28
PCT/EP2002/010565 WO2003029534A1 (de) 2001-09-28 2002-09-20 Spinndüse

Publications (2)

Publication Number Publication Date
EP1440188A1 EP1440188A1 (de) 2004-07-28
EP1440188B1 true EP1440188B1 (de) 2006-11-02

Family

ID=7700835

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02800100A Expired - Lifetime EP1440188B1 (de) 2001-09-28 2002-09-20 Spinndüse

Country Status (6)

Country Link
US (1) US7172401B2 (zh)
EP (1) EP1440188B1 (zh)
JP (1) JP2005504191A (zh)
CN (1) CN1296530C (zh)
DE (1) DE50208620D1 (zh)
WO (1) WO2003029534A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013220008B4 (de) * 2012-10-04 2019-11-28 Tmt Machinery, Inc. Schmelzspinneinrichtung

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6846450B2 (en) * 2002-06-20 2005-01-25 3M Innovative Properties Company Method for making a nonwoven web
CN102367592B (zh) * 2011-05-25 2013-10-02 文兴纺织（苏州）有限公司 带微控制器的喷丝器
BR112018071240B1 (pt) * 2016-04-25 2022-07-26 Cytec Industries Inc Conjunto de fieira, método para fiação de fibra, e, uso do conjunto de fieira
CN108523180B (zh) * 2018-03-14 2021-04-06 北京中科昊盈生物技术有限公司 一种宠物磨牙棒的挤出成型机
CN113426518A (zh) * 2021-06-28 2021-09-24 黄河科技学院 一种化工机械用固体原料粉碎设备
CN114775070B (zh) * 2022-04-23 2023-07-07 浙江毅聚新材料有限公司 超高分子量聚乙烯纤维制备方法及其使用的喷丝板组件、得到的多丝纱

Family Cites Families (13)

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Publication number Priority date Publication date Assignee Title
DE125421C (zh)
CH432711A (de) * 1965-03-03 1967-03-31 Inventa Ag Vorrichtung zum Spinnen von Fäden aus synthetischem Material
US3762854A (en) * 1970-04-08 1973-10-02 Akzona Inc Melt spinning apparatus
DE2248756B2 (de) * 1972-10-05 1976-06-10 Barmag Barmer Maschinenfabrik Ag, 5600 Wuppertal Spinnkopf zum spinnen plastischer massen
DD125421A1 (zh) * 1976-05-13 1977-04-20
DE3485710D1 (de) * 1983-03-23 1992-06-11 Barmag Barmer Maschf Spinnkopf zum schmelzspinnen endloser faeden.
DE4236570A1 (zh) * 1991-12-06 1993-06-09 Akzo N.V., Arnheim/Arnhem, Nl
DE4239560C2 (de) * 1992-11-25 2003-04-30 Zimmer Ag Düsenblock
CH688044A5 (de) * 1993-06-21 1997-04-30 Rieter Automatik Gmbh Spinnbalken zum Schmelzspinnen endloser Faeden.
US5507498A (en) * 1993-10-13 1996-04-16 Synergy Extrusion Technologies, Inc. Sealing device for polymer filtration apparatus
DE19932852C2 (de) * 1999-07-14 2001-08-16 Geb Schroeder Beeck Selbstdichtender Spinndüsenblock
DE19935982A1 (de) * 1999-07-30 2001-02-01 Lurgi Zimmer Ag Selbstdichtende Kompaktdüse für Schmelzspinnverfahren
CA2474024A1 (en) * 2002-02-04 2003-08-14 Mold-Masters Limited Thermal seal between manifold and nozzle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013220008B4 (de) * 2012-10-04 2019-11-28 Tmt Machinery, Inc. Schmelzspinneinrichtung

Also Published As

Publication number Publication date
WO2003029534A1 (de) 2003-04-10
JP2005504191A (ja) 2005-02-10
CN1296530C (zh) 2007-01-24
CN1558968A (zh) 2004-12-29
EP1440188A1 (de) 2004-07-28
US7172401B2 (en) 2007-02-06
US20040228939A1 (en) 2004-11-18
DE50208620D1 (de) 2006-12-14

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