EP1646737A1 - Vorrichtung zum schmelzspinnen, kühlen und aufwickeln - Google Patents
Vorrichtung zum schmelzspinnen, kühlen und aufwickelnInfo
- Publication number
- EP1646737A1 EP1646737A1 EP04740775A EP04740775A EP1646737A1 EP 1646737 A1 EP1646737 A1 EP 1646737A1 EP 04740775 A EP04740775 A EP 04740775A EP 04740775 A EP04740775 A EP 04740775A EP 1646737 A1 EP1646737 A1 EP 1646737A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- jacket
- blow
- cooling
- additional
- filament
- 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.)
- Withdrawn
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
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
- D01D5/088—Cooling filaments, threads or the like, leaving the spinnerettes
Definitions
- the invention relates to a device for melt spinning, cooling and winding a thread formed from a filament sheet according to the preamble of claim 1 and a device for cooling a filament sheet according to the preamble of claim 14.
- the cooling of the extruded filament strands is of particular importance for the later quality of the synthetic thread formed from the filament strands.
- very fine filament strands are extruded, which react very sensitively to cooling by a flow of cooling air and therefore require particularly uniform cooling.
- a basic distinction is made between two cooling processes for cooling melt-spun filament strands.
- a cooling air flow is directed from the outside onto a filament bundle.
- particular care must be taken to ensure that the filament strands routed inside are adequately cooled.
- the filament strands are spun in an annular arrangement and in the center of the annular filaments a cooling air flow directed from the inside out is generated.
- the invention is based on this principle.
- So-called blow candles are used to generate the cooling air flow penetrating the filament curtain from the inside, as is known, for example, from DE 196 53 451 AI.
- the blow candle is cylindrical and has a porous gas-permeable blow jacket.
- the blow candle is closed at one end and connected at an opposite end to an air outlet through which cooling air is introduced into the interior of the blow candle.
- the blow jacket consists of a porous material with a certain flow resistance.
- blow jacket of the blow candle It is known to manufacture the blow jacket of the blow candle from sintered metal, metal foam, foam or wound paper layers. As a result of the pores and openings contained irregularly in the materials, a flow which is often not sufficiently laminar and is not uniform over the entire surface is generated when the cooling air exits the blow jacket. Such flow profiles, however, lead to irregularities in the cooling of fine filament strands, which also negatively affect the smooth running of the filament strands.
- conventional blow candles have a blow jacket with low permeability and therefore require high pressure differences in order to obtain an outflow over the entire surface of the blow candle. However, this inevitably leads to irregularities due to preferred outflow regions, which also have turbulence. However, it is not possible to increase the gas permeability in the blow jacket, since the effect of the non-uniformity of the cooling air emerging in the regions of the blow candle increases.
- Another object of the invention is a device for melt spinning and cooling and a device for cooling the input to further develop the type mentioned in such a way that a cooling air flow generated uniformly over the entire cooling section for cooling the filament sheet predominates.
- the object is achieved according to the invention by a device for melt spinning and cooling with the features according to claim 1, and by a device for cooling a filament sheet according to claim 14.
- the invention is characterized in that the cooling air emerging from the blow candle is converted into a laminar flow in a predetermined direction before striking the filament strands.
- An air movement of the cooling air that is suitable for cooling fine filament strands can thus be generated, which leads to a uniform formation and solidification of the individual filament strands. Irregularities in the uniformity of filament to filament and in the yarn uniformity over time could thus advantageously be avoided.
- the additional jacket provided for equalization and for aligning the cooling air flow has a material with a large number of openings, which essentially does not cause any additional flow resistance.
- the blowing characteristic of the blowing jacket enclosed by the additional jacket is thus essentially not influenced and only a conversion of the cooling air emerging as a turbulent flow from the blowing jacket into a laminar flow is carried out.
- the material of the additive has essentially radially oriented openings in order to bring about a cooling air flow directed transversely onto the filament strands.
- a cooling air flow directed transversely onto the filament strands is generated.
- a multilayer wire mesh with a large open flow area is particularly advantageous as the material for the additional jacket. Negligible flow resistances occur here.
- perforated or honeycomb sheet metal bodies can also be used, which are preferably seamless.
- the additional jacket bears with contact on the blow jacket and is held by the blow candle.
- This embodiment has the advantage that a support effect is generated on the blow jacket by the additional jacket, so that the blow jacket can be made of paper or low-strength foam.
- blow jacket and the additional jacket can advantageously be joined together to form a structural unit which considerably simplifies the handling of the blow candle.
- the additional jacket can be arranged interchangeably on the holding device, so that when changing a thread titer or a polymer appropriate adaptation of the cooling can be carried out by replacing the additional jacket.
- the additional jacket In order not to receive any axial currents in the case of exchangeable additional shells in the annular space formed between the blow jacket and the additional jacket, the additional jacket is held in an operating position at the free end of the blow candle by means of a spacer on the stop of the spinning device by the holding device. The additional jacket is thus securely sealed at the ends between the spacer and the holding device.
- the blow candle with the additional jacket can advantageously be moved from the operating position away from the spinning device into a waiting position by the holding device.
- the holding device is adjustable in height and / or pivotable relative to the spinning device.
- the holding device below the blow candle is provided with a preparation device which has a preparation ring contacted by the filament sheet. This means that the entire filament set is evenly prepared into a synthetic thread before being brought together.
- the filament sheet is preferably brought together by a collecting thread guide arranged after the preparation device.
- one or more can be
- Partly stretched POY threads or fully stretched FDY threads can be produced, for example, from a meltable synthetic polymer for example polyester, polyamide or polypropylene. Basically, it can be used to produce textile or technical threads.
- the invention also extends to processes of this type, in which an annular sheet of filaments are to be cooled while maintaining high uniformity, such as, for example, in the production of staple fibers.
- the filament strands can advantageously be cooled by a device according to the invention before they are combined to form a spinning cable.
- the device according to the invention can also be developed according to claim 14 by the aforementioned features and combinations of features of claims 4 to 13. The device according to the invention is explained in more detail below with the aid of a few exemplary embodiments and with reference to the accompanying drawings.
- Fig. 1 shows schematically a view of a first embodiment of the device according to the invention
- Fig. 2 shows schematically a view of a further embodiment of a device according to the invention
- FIG. 3 schematically shows a detail from the jacket of the blow candle of the exemplary embodiment according to FIG. 2
- FIG. 1 schematically shows a first exemplary embodiment of a device according to the invention for melt spinning, cooling and winding up a synthetic one
- the device has a spinning device 1, a K ⁇ M Rhein 6 arranged below the spinning device 1 and a winding device 19 arranged downstream of the cooling device 6.
- the spinning device 1 contains a heated spinning head 2, which carries a spinneret 3 on its underside.
- the spinneret 3 has an annular arrangement of a plurality of nozzle bores on the underside for extruding a plurality of filament strands. Further melt-conveying and melt-conveying components are arranged within the spinning head 2, not shown here.
- the polymer melt supplied via a melt feed 4 is conveyed to the spinneret 3 by a spinning pump (not shown here).
- a plurality of spinnerets are usually held within the spinning head 2 in order to produce a plurality of threads side by side in parallel. Since the invention can easily be extended to two, three or more threads, the arrangement for producing only one thread has been shown for the sake of clarity.
- a cooling device 6 is arranged below the spinning device 1.
- the ffy device 6 has a blow candle 7, which is arranged on a holding device 10.
- the blow candle 7 is hollow-cylindrical and contains a blow jacket 8, which is formed from a porous material.
- the material of the blow jacket 8 can be formed by wound paper layers, foam of the sintered metal.
- the blow jacket 8 is closed by an end piece 15.
- the blow jacket 8 is arranged on the holding device 10 with the opposite end.
- an additional jacket 9 is arranged on the holding device 10, which encloses the blow jacket 8 in the form of a jacket.
- the blow candle 7 and the additional jacket 9 are arranged via a spacer 14 in the center of the spinneret 3 on the underside of the spinning head 2.
- the spacer 14 is held at the end of the blow candle 7 by the holding device 10 at a stop 22 on the underside of the spinneret 3.
- the additional casing 9 and the blow candle 7 held in the interior of the additional casing are in their operating position in the center of the spinneret 3.
- the holding device 10 is designed to be height-adjustable and pivotable for positioning the blow candle 7 and the additional casing 9.
- the holding device 10 is coupled to an air duct 11.
- the air supply 11 is connected to a cooling medium source, not shown here, for example a blower.
- the air supply 11 is coupled to the open end of the blow jacket 8 in the holding device 10 via a channel system.
- a preparation device 12 is formed on the circumference of the holding device 10.
- the preparation device 12 is formed here by a preparation ring 13, which has an emerging preparation agent on its surface and wets the filament strands 5 which run along the circumference of the preparation ring 13.
- a treatment device 18 is provided for pulling off the filament strands 5 or the thread 16.
- the treatment device 8 is shown symbolically here, since it depends on the thread type to be produced in its nature and composition of the aggregates.
- One or more godets or godet units for pulling off, guiding or stretching the thread can thus be present.
- swirling devices, additional preparation devices or thread choppers with suction or thread sensors can be integrated.
- the thread 16 or the filament strands 5 could also be drawn off directly by the winding device 19.
- a take-up device 19 is provided below the treatment device 18 to receive the threads.
- the winding device 19 is through the
- a melted polymer material for example by an extruder or a pump, is fed into the spinning device 1.
- the polymer melt enters the spinning head 2 via the heated melt feed 4 and is guided to the spinneret 3 under pressure.
- the spinneret 3 is circular in shape and contains on its underside one or more annular rows of holes from which the polymer melt emerges as fine filament strands 5. After the filament strands 5 have been extruded through the spinneret 3, the filament strands 5 pass through the cooling device 6 arranged below the spinning device 1.
- cooling air is fed in via the air supply 11, which air is led into the interior of the blow candle 7 under a pre-pressure becomes. Due to the pre-pressure, a cooling air flow radially penetrates the blow jacket 8 of the blow candle 7. The flow arising at the periphery of the blow jacket 8 is essentially determined by the pore distribution of the material of the blow jacket 8.
- the cooling air flow emerging from the blow jacket 8 of the blow candle 7 is predominantly turbulent. As a material, the blow jacket 8 could be formed by multilayer paper layers or foam or sintered metal. The cooling air flow emerging from the blow jacket 8 is then passed through the additional jacket 9.
- the additional jacket 9 consists of a material with a plurality of openings, which on the one hand oppose a very low flow resistance to the cooling air flow and on the other hand lead to an orientation of the cooling air flow.
- the material preferably has radially aligned openings, so that a transverse laminar flow is generated over the entire cooling section on the additional jacket 9 and penetrates the filament curtain for cooling the filament strands 5.
- the equalization of the cooling air flow through the additional jacket 9 causes a uniform inflow of the filament strands without Turbulences. This results in a high level of smoothness, which is particularly evident in the uniformity of the filament and thus in the thread.
- the 1-minute flow caused by the additional jacket 9 to cool the filament strands was retained even when the admission pressure of the cooling air was changed within the blow candle to increase the amount of cooling air.
- the filament strands 5 are brought into contact with the preparation ring 13 of the preparation device 12 on the circumference of the holding device 10. After the preparation, the filament strands 5 are joined together to form the thread 16, which is wound into a bobbin 20 after treatment.
- the device according to the invention shown in FIG. 1 is particularly suitable for producing textile threads. Both POY threads with partial stretching or FDY threads with full stretching can be produced.
- the additional sheath is in the embodiment of the device according to the invention shown in FIG. 1. 9 interchangeably coupled to the holding device 10.
- the holding device 10 is movable so that the blow candle with the additional jacket can be moved from the operating position into a waiting position. An exchange of the additional jacket 9 can be carried out within the waiting position.
- the hole geometries or the hole arrangements in the additional jacket 9 can be changed by choosing a certain material or a certain shape.
- the kitchen device 6 arranged below the spinning device 1 is formed by a blow candle 7 in order to generate a radially directed cooling air flow.
- an additional jacket 9 is placed directly in contact with the blowing jacket 8 over the blowing candle 7.
- the blow jacket 8 and the additional jacket 9 form a structural unit which is held at the free end by a common end piece 15.
- the blow jacket 8 and the additional jacket 9 are attached to the holding device 10 with the opposite end, the blow jacket 8 having an open end for receiving the cooling air.
- the function of the additional jacket 9 and the blow jacket 8 and the structure of the additional jacket 9 and the blow jacket 8 is essentially identical to the previous exemplary embodiment, so that reference is also made to the function of the aforementioned embodiment.
- the bladder jacket 8 is directly supported by the additional jacket 9.
- the blow jacket 8 can thus be produced with low strength, for example from foam or thin layers of paper.
- the additional jacket 9 has a material which has a negligible flow resistance in comparison to the material of the blow jacket 8.
- the blow jacket 8 is formed from a foam material.
- the additional jacket 9 is arranged on the outer circumference of the blow jacket 8.
- the additional jacket 9 is formed by a multi-layer wire mesh 23.
- the multi-layer wire mesh 23 forms essentially radially aligned openings 24, which leads to equalization of the cooling air flow emerging from the blow jacket 8.
- a transverse, in-line cooling air flow emerges in order to penetrate the filament strands surrounding the additional sheath 9.
- the structure of the spinning device and the cooling device shown in the exemplary embodiments in FIGS. 1 and 2 is exemplary.
- the cooling air supply to the blow candle can also be introduced via the spinning head.
- the preparation device on the circumference of the holding device can be replaced by a thread guide ring.
- a preparation device would be assigned to the S-thread guide.
- the design and the length ratio of the spacer to the length of the blow candle is also exemplary. Basically, the length of the spacer allows a calm zone to be formed in which the filaments are not actively cooled. Post-heaters could also be arranged in such a zone, for example, in order to influence the molecular orientation of the filament strands.
- the invention also extends to processes of this type, in which the filament strands are joined together after cooling to produce staple fibers as a tow or tow.
- devices for cooling can be used which are identical in construction to the exemplary embodiments according to FIGS. 1 and 2. In this respect, reference can be made to the above descriptions for the explanation of such devices.
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 (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003132645 DE10332645A1 (de) | 2003-07-18 | 2003-07-18 | Vorrichtung zum Schmelzspinnen, Kühlen und Aufwickeln |
PCT/EP2004/007467 WO2005014900A1 (de) | 2003-07-18 | 2004-07-08 | Vorrichtung zum schmelzspinnen, kühlen und aufwickeln |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1646737A1 true EP1646737A1 (de) | 2006-04-19 |
Family
ID=33560199
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04740775A Withdrawn EP1646737A1 (de) | 2003-07-18 | 2004-07-08 | Vorrichtung zum schmelzspinnen, kühlen und aufwickeln |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1646737A1 (de) |
JP (1) | JP2006528283A (de) |
CN (1) | CN1823185A (de) |
DE (1) | DE10332645A1 (de) |
TW (1) | TW200508433A (de) |
WO (1) | WO2005014900A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005042891A1 (de) * | 2005-09-09 | 2007-03-15 | Saurer Gmbh & Co. Kg | Vorrichtung und Verfahren zum Schmelzspinnen und Abkühlen eines multifilen Fadens |
EP2951338B1 (de) * | 2013-02-04 | 2016-09-28 | NV Bekaert SA | Abkühlröhre für die polymerfaserextrusion |
DE102016004715A1 (de) * | 2016-04-19 | 2017-10-19 | Oerlikon Textile Gmbh & Co. Kg | Vorrichtung zum Abkühlen einer ringförmigen extrudierten Filamentschar |
CN108411496B (zh) * | 2018-04-17 | 2020-10-23 | 嘉兴学院 | 一种利用湍流制备超细纤维非织造布的装置 |
CN109537079B (zh) * | 2019-01-29 | 2024-01-19 | 绍兴山海纺织有限公司 | 一种涤纶丝的生产设备 |
CN114471182B (zh) * | 2022-02-24 | 2023-02-28 | 江苏创仕德环保科技有限公司 | 一种高精度一体式中空纤维膜纺丝装置及其生产工艺 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL284431A (de) * | 1962-08-23 | |||
IT1038655B (it) * | 1974-06-04 | 1979-11-30 | Teijin Ltd | Processo e apparecchiatura per filare una massa fusa |
CH673659A5 (de) * | 1987-03-05 | 1990-03-30 | Inventa Ag | |
DE4208568A1 (de) * | 1992-03-18 | 1993-09-23 | Zimmer Ag | Verfahren und vorrichtung zur herstellung synthetischer endlosfilamente |
DE19821778B4 (de) * | 1998-05-14 | 2004-05-06 | Ems-Inventa Ag | Vorrichtung und Verfahren zur Herstellung von Mikrofilamenten von hoher Titer-Gleichmäßigkeit aus thermoplastischen Polymeren |
NL1012184C2 (nl) * | 1999-05-28 | 2000-11-30 | Stork Screens Bv | Koelinrichting voor het koelen van synthetische filamenten. |
JP2003113528A (ja) * | 2001-10-05 | 2003-04-18 | Toray Eng Co Ltd | 紡糸装置 |
US6832904B2 (en) * | 2002-08-15 | 2004-12-21 | Wellman, Inc. | Apparatus for cooling and finishing melt-spun filaments |
-
2003
- 2003-07-18 DE DE2003132645 patent/DE10332645A1/de not_active Withdrawn
-
2004
- 2004-07-05 TW TW093120129A patent/TW200508433A/zh unknown
- 2004-07-08 EP EP04740775A patent/EP1646737A1/de not_active Withdrawn
- 2004-07-08 WO PCT/EP2004/007467 patent/WO2005014900A1/de active Application Filing
- 2004-07-08 JP JP2006520715A patent/JP2006528283A/ja not_active Withdrawn
- 2004-07-08 CN CN 200480020414 patent/CN1823185A/zh active Pending
Non-Patent Citations (1)
Title |
---|
See references of WO2005014900A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2005014900A1 (de) | 2005-02-17 |
DE10332645A1 (de) | 2005-02-03 |
JP2006528283A (ja) | 2006-12-14 |
TW200508433A (en) | 2005-03-01 |
CN1823185A (zh) | 2006-08-23 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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17P | Request for examination filed |
Effective date: 20051223 |
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AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): CH DE IT LI TR |
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DAX | Request for extension of the european patent (deleted) | ||
RBV | Designated contracting states (corrected) |
Designated state(s): CH DE IT LI TR |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: OERLIKON TEXTILE GMBH & CO. KG |
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RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: OERLIKON TEXTILE GMBH & CO. KG |
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17Q | First examination report despatched |
Effective date: 20080714 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20081025 |