EP1440188A1 - Spinndüse - Google Patents
SpinndüseInfo
- Publication number
- EP1440188A1 EP1440188A1 EP02800100A EP02800100A EP1440188A1 EP 1440188 A1 EP1440188 A1 EP 1440188A1 EP 02800100 A EP02800100 A EP 02800100A EP 02800100 A EP02800100 A EP 02800100A EP 1440188 A1 EP1440188 A1 EP 1440188A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- expansion body
- spinneret
- expansion
- inlet piece
- 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.)
- Granted
Links
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 large number of strand-like filaments according to the preamble of claim 1.
- a generic spinneret is known for example from DE 199 32 852 AI.
- the known spinneret has a housing which serves to accommodate a nozzle plate, a perforated plate, a filter insert and an inlet piece.
- the nozzle plate, the perforated plate and the inlet piece are inserted into the housing and are held inside the housing by a screw.
- the inner parts of the housing are formed from a material which has a higher coefficient of thermal expansion than the housing material. This ensures that in the operating state of the spinneret, which could be in the region of 300 ° C., for example, the inner parts within the housing of the spinneret expand more than the housing surrounding the inner parts. This creates a compressive force that 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 different materials must always be used to manufacture housing and housing inner parts of the spinneret. Furthermore, when selecting the materials for the inner parts, the requirement for sufficient strength and resistance to the polymer melt to be guided must always be taken into account. This means that only materials are considered that have only a small difference in the thermal expansion coefficients. In this respect, the known spinneret is only suitable for very high operating temperatures in order to produce a sufficient sealing effect.
- a spinneret is also known from DE 199 35 982 A1, in which a filter insert and a nozzle plate are inserted within a housing. The spinneret plate is held in the housing by means of a thread.
- the inner parts are made of materials that have greater thermal expansion than the housing. In this respect, the disadvantages mentioned above occur in the same way. In addition, the installation situation requires that both radial and axial pressure forces have to be built up due to the greater thermal expansion of the inner parts relative to the housing.
- a spinneret is known from DD 125421, in which the spinneret plate and a perforated plate are arranged within a sleeve which is fastened by a screw to the end face of a housing part forming the melt inlet. Between the end face of the housing part and the attached perforated plate and nozzle plate, a seal is arranged inside the sleeve receiving the inner parts.
- the sleeve is made of a material which has a higher thermal expansion coefficient than the housing part and the screwing means, in order to achieve a deformation of the seal arranged between the parts and thus a self-sealing when the sleeve is heated.
- the invention has for its object to develop a generic spinneret of the type mentioned in such a way that the inner parts fit together within a housing are held self-sealing substantially independently of their materials in operation.
- At least one expansion body is arranged between the housing and one of the inner parts and that the expansion body is formed from a material which has a higher coefficient of thermal expansion than the housing material and which generates a compressive 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 from materials that are. finally, must meet the requirements for guiding a melt and for extruding the melt, such as strength and durability.
- the compressive force required for self-sealing is only achieved when the expansion body heats up.
- the housing and the inner parts such as the inlet piece and the nozzle plate can be made of an identical material or of different materials.
- the spinneret according to the invention is preferably designed in such a way together with the compressive force generated by heating the expansion body that that when heated a pressure force acting essentially in a clamping direction determined by the screwing means can be generated.
- the effect of generating a directional compressive force can be improved in that the expansion body and / or the material of the expansion body have a structure which, when heated, expands the expansion body essentially in one direction. In the case of an expansion body, for example, this can be achieved by appropriate length / width ratios.
- the expansion body is preferably se 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 advantageously be formed by a plurality of expansion pieces which are arranged between the inlet piece and a cover of the housing or a bottom of the housing.
- the expansion body can either be firmly connected to the housing or firmly connected to the inlet piece.
- the housing is formed from a housing material which, in comparison with the materials of the inner parts - such as the inlet piece and the nozzle plate - has a lower coefficient of thermal expansion.
- the larger expansion of the inner parts within the housing in addition to the expansion body would generate compressive forces against the housing.
- a filter insert and a perforated plate are arranged inside the housing between the inlet piece and the nozzle plate.
- the inlet piece, the filter insert, the perforated plate and the nozzle plate are held within the housing by the screwing means.
- seals can preferably be inserted in the parting lines.
- a spring serving as a break protection device is tensioned between the housing and one of the inner parts.
- a spring travel is set between the inner parts and the housing so that uncontrolled expansions can be safely accommodated.
- 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 compressive force caused by heating.
- the functions carried out by the spinneret for melt spinning the filaments are not relevant for the expansion body, so that the choice of material for the expansion body can be directed solely to the needs of thermal expansion.
- Metals or metal alloys such as copper are particularly suitable for this.
- metals and metal alloys are preferably used whose melting temperature is above 500 ° C.
- Fig. 1 shows schematically a sectional view of a first embodiment of a spinneret according to the invention
- Fig. 2 shows schematically a sectional view of a further exemplary embodiment of a spinneret according to the invention.
- FIG. 3 schematically shows a top view of the exemplary embodiment from FIG. 2.
- Fig. 5 schematically shows another embodiment of the spinneret according to the invention
- the spinneret has a cylindrical housing 1 which is delimited at the top by a bottom 6 on the front side.
- the bottom 6 has an opening 13 in the center.
- a projection 20 of an inlet piece 2 inserted into the housing 1 projects through the opening 13 in the housing base 6.
- An expansion body 8 designed as an expansion ring is arranged between the inlet piece 2 and the housing base 6.
- the inlet piece 2 is supported on the housing base 6 via the annular expansion body 8.
- the inlet piece 2 has on its extension 20 projecting outside the housing 1 a melt inlet 5 which is connected by an inlet channel 14 and a melt channel 26 to a distributor chamber 15 within the inlet piece 2.
- a filter insert 9, a perforated plate 10 and a nozzle plate 3 are connected to the end face of the inlet piece 2 within the housing 1.
- An outer circumferential seal 11 is provided between the nozzle plate 3 and the perforated plate 10.
- the filter insert 9 designed as a sieve plate is surrounded by a circumferential seal 29.
- the you- device 29 is arranged between the perforated plate 10 and the inlet piece 2.
- the nozzle plate 3 is supported by 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 is.
- the spring insert 27 could be formed by an annular spring or by a plurality of springs.
- the screw 7 is designed 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 bores 4 formed within the nozzle plate 3 form the melt outlet.
- the housing 1 is first placed with the bottom 6 down in an installation device. Then the annular expansion body 8, the inlet piece 2, the filter insert 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 7 is applied to the thread 21 of the housing 1. The inserted inner parts are biased against each other within the housing 1. Before the spinneret is used in a spinning beam, the spinneret is first warmed up within a furnace to a temperature of approx. 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 essentially in the direction of the perforated plate 10 and the nozzle plate 3, so that a compressive force acting in the same direction in addition to the prestressing force is generated.
- a self-sealing is achieved in the joints between the inlet piece 2, the perforated plate 9 and the nozzle plate 3.
- the use of seals 11 and 29 in the parting lines of the individual parts ensures that an adequate seal to the outside is ensured even during critical piecing phases.
- the sealing effect is also increased with full effectiveness of the melt pressure.
- a polymer melt is fed to the spinneret via the melt inlet 5 and reaches the distribution chamber 15 via the inlet duct 14 and the melt duct 26. From the distributor chamber 15, the polymer melt penetrates the filter insert 9 and the perforated plate 10. Then the polymer melt is extruded through the nozzle bores 4 of the nozzle plate 3 into a large number of strand-like filaments. Within the distribution chamber 15 melt pressures of up to 250 bar are achieved.
- the filter insert 9 is preferably formed by one or more sieves with different mesh sizes. However, it is also possible to use a filter insert from the filter granulate with different grain sizes above the perforated plate 2.
- the inner parts - such as the inlet piece 2, the perforated plate 10 and the nozzle plate 3 - could be made of a material which has a higher coefficient of thermal expansion than the housing 1.
- the housing could be made of Steel
- the inner parts of stainless steel and the expansion body are also made of stainless steel. This design has the advantage that the resistance of the inner parts to the polymer melt is ensured when using a stainless steel.
- the expansion ring 8 is firmly connected to the base 6. This means that the parts carrying the melt can be easily dismantled and reassembled for cleaning purposes.
- the material of the expansion body is to be selected such that the high cleaning temperatures of over 500 ° C. do not lead to any undesirable change in the expansion body. So 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 screwing 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 means 7 enables the inner parts or the expansion body to be expanded further.
- FIG. 2 and 3 show a further embodiment of a spinneret according to the invention.
- 2 shows the spinneret schematically in a sectional view
- FIG. 3 shows the spinneret schematically in a plan view.
- the embodiment shown in FIGS. 2 and 3 is designed as a rectangular spinneret.
- the spinneret has a rectangular housing 1, which has a housing base 22 on the underside with an opening 23 required for extruding the filaments.
- a rectangular nozzle plate 3, a seal 11, a perforated plate 10, a filter insert 9 with seal 29 and an inlet piece 2 are arranged on the housing base 22 within the housing 1.
- the inlet piece 2 has in the central region of the housing 1 an extension 20 which protrudes from the housing 1 and forms a melt inlet 5.
- the inlet piece 2 has two recesses 24 and 31 arranged next to one another, into which the expansion pieces 8.1 and 8.2 are received.
- the expansion pieces 8.1 and 8.2 are supported outside of the inlet piece 2 on a pressure plate 19 and 30, respectively.
- 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.
- two openings 32 and 33 are formed next to one another, each with an internal thread 21 and 34.
- threads 21 and 34 each engage a screw 7.1 and 7.2, which act directly on the pressure plates 19 and 30. This results in a preload within the inner parts used in the housing 1 during assembly.
- the screw means 7.1 and 7.2 are screwed evenly into the threads 21 and 34 of the housing cover 16 5.
- the selection of the materials for the expansion body 8 designed as an expansion piece, the housing 1 and the inner part can be carried out according to the exemplary embodiment according to FIG. 1.
- the assembly process and the heating of the spinneret for generating the compressive forces are the same as in the previous exemplary embodiment. In this respect, reference is made to the preceding description.
- the exemplary embodiment of the 15 spinnerets according to the invention has a security element in order to be able to accommodate uncontrolled expansions.
- a spring 18 is tensioned between the screwing means 7.1 and the pressure plates 19 and between the screwing means 7.2 and the pressure plate 30.
- a gap 28 is formed between the screwing means 7.1 and 7.2 and the pressure plates 19 and 30, which limits the permissible spring travel of the spring 18 and thus enables the internal parts to expand to a maximum.
- FIGS. 4 and 5 show a further exemplary embodiment of a spinneret according to the invention.
- FIG. 4 schematically represents a cross-sectional view
- FIG. 5 schematically shows a longitudinal sectional view of the exemplary embodiment.
- the following description does not apply in so far as no express reference is made to either of the figures for both figures.
- the components with the same function have been given identical reference numbers for the sake of clarity.
- the embodiment of the spinneret shown in FIGS. 4 and 5 has a tubular housing 1.
- the tubular housing 1 is aligned horizontally and closed at the ends by a side plate 36.1 and 36.2 and a cover 35.1 and 35.2, wherein between the side plates 36.1 and 36.2 and the covers 35.1 and 35.2 act several compression springs 37.
- the nozzle plate 3, the perforated plate 10, the filter insert 9, the inlet piece 2 and a pressure plate 19 are arranged one above the other in the housing 1 between the side plates 36.1 and 36.2.
- the seal 11 is arranged between the nozzle plate 3 and the perforated plate 10 and the seal 29 is arranged between the perforated plate 10 and the inlet piece 2.
- the seal 29 encloses the filter insert 9.
- the inlet piece 2 forming the distributor chamber 15 is connected to an inlet adapter 17 which forms the melt inlet 5 outside the housing 1 and which forms an inlet channel 14 opening into the distributor chamber 15 with the inlet piece 2.
- a nozzle cutout 23 is introduced in the housing 1 in the region of the nozzle plate 3, so that the filament strands emerging from the nozzle bores 4 of the nozzle plate 3 can be extruded unhindered.
- the housing 1 has a plurality of openings 33 for receiving a screwing means 7 each.
- the screwing means 7 is connected to the housing 1 via a thread 34.
- a total of 4 screw means 7.1 to 7.4 are provided.
- a spring 18 is tensioned relative to the pressure plate 19 by the screwing means 7.1 to 7.4.
- a plurality of expansion bodies 8.1 to 8.4 are arranged, which are supported between the inlet piece 2 and the pressure plate 19.
- the function of the exemplary embodiment shown in FIGS. 4 and 5 is identical to the previous exemplary embodiments of the spinneret according to the invention, so that reference is made to the preceding description at this point.
- To clean the spinneret only melt-carrying components 2, 3 and 10 are burned out in a pyrolysis furnace at temperatures of approx. 500 ° C.
- the pressure plate 19 is the expansion bodies 8.1 to 8.4 is interchangeable and therefore does not have to be exposed to these high cleaning temperatures. This results in an even greater variety of materials.
- the spinneret according to the invention is characterized in that the materials of the individual parts can be selected according to their function. It is thus possible to optimally carry out every function, such as melt conveyors, build up pressure forces or secure internal pressure, by selecting the appropriate material.
- the structure of the illustrated embodiments of the spinneret according to the invention and the structure of the individual parts is exemplary.
- the invention covers all spinnerets in which inner parts within a housing are clamped in a self-sealing manner by an additional expansion body.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
Description
Claims
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 true EP1440188A1 (de) | 2004-07-28 |
EP1440188B1 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 (de) |
EP (1) | EP1440188B1 (de) |
JP (1) | JP2005504191A (de) |
CN (1) | CN1296530C (de) |
DE (1) | DE50208620D1 (de) |
WO (1) | WO2003029534A1 (de) |
Families Citing this family (7)
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 |
JP5908821B2 (ja) * | 2012-10-04 | 2016-04-26 | Tmtマシナリー株式会社 | 溶融紡糸装置 |
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE125421C (de) | ||||
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 (de) * | 1976-05-13 | 1977-04-20 | ||
DE3485710D1 (de) * | 1983-03-23 | 1992-06-11 | Barmag Barmer Maschf | Spinnkopf zum schmelzspinnen endloser faeden. |
DE4236570A1 (de) * | 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 |
-
2002
- 2002-09-20 DE DE50208620T patent/DE50208620D1/de not_active Expired - Fee Related
- 2002-09-20 CN CNB028187385A patent/CN1296530C/zh not_active Expired - Fee Related
- 2002-09-20 WO PCT/EP2002/010565 patent/WO2003029534A1/de active IP Right Grant
- 2002-09-20 JP JP2003532740A patent/JP2005504191A/ja not_active Withdrawn
- 2002-09-20 EP EP02800100A patent/EP1440188B1/de not_active Expired - Lifetime
-
2004
- 2004-03-29 US US10/812,123 patent/US7172401B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO03029534A1 * |
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 |
US7172401B2 (en) | 2007-02-06 |
US20040228939A1 (en) | 2004-11-18 |
DE50208620D1 (de) | 2006-12-14 |
EP1440188B1 (de) | 2006-11-02 |
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