IE904289A1 - Spinning nozzles - Google Patents
Spinning nozzlesInfo
- Publication number
- IE904289A1 IE904289A1 IE428990A IE428990A IE904289A1 IE 904289 A1 IE904289 A1 IE 904289A1 IE 428990 A IE428990 A IE 428990A IE 428990 A IE428990 A IE 428990A IE 904289 A1 IE904289 A1 IE 904289A1
- Authority
- IE
- Ireland
- Prior art keywords
- spinning
- plate
- holes
- spinning nozzle
- carrier plate
- Prior art date
Links
- 238000009987 spinning Methods 0.000 title claims abstract description 57
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 239000010970 precious metal Substances 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 238000010792 warming Methods 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 2
- 229910052737 gold Inorganic materials 0.000 claims description 2
- 239000010931 gold Substances 0.000 claims description 2
- 229910052709 silver Inorganic materials 0.000 claims description 2
- 239000004332 silver Substances 0.000 claims description 2
- 229910052715 tantalum Inorganic materials 0.000 claims description 2
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 7
- 229920002678 cellulose Polymers 0.000 description 7
- 239000001913 cellulose Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 238000005553 drilling Methods 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- LFTLOKWAGJYHHR-UHFFFAOYSA-N N-methylmorpholine N-oxide Chemical compound CN1(=O)CCOCC1 LFTLOKWAGJYHHR-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007779 soft material Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- AVXURJPOCDRRFD-UHFFFAOYSA-N Hydroxylamine Chemical group ON AVXURJPOCDRRFD-UHFFFAOYSA-N 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000000578 dry spinning Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920001281 polyalkylene Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- -1 polyethylene glycol Chemical compound 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
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
- 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
- D01D4/00—Spinnerette packs; Cleaning thereof
- D01D4/02—Spinnerettes
Abstract
In a spinneret, the spinning plate having the spinning capillaries (9) consists, according to the invention, of a carrier plate (2) having holes (7), especially stepped bores, into which are inserted or pressed small plates (8) containing the capillaries (9). The carrier plate (2) can therefore be of any thickness and consist of material of any strength, in order to achieve a high pressure resistance, without making it difficult to produce closely arranged capillaries (9), since the capillaries can be made in the softer small plates (8). <IMAGE>
Description
The invention relates to a spinning nozzle, with a nozzle head which is preferably provided with heating channels for warming, and a spinning plate which has capillary tubes.
Spinning nozzles are required for the production of fibres, the starting material of the spinning stock consisting of organic or inorganic material. The material, which is capable of flowing and of being pumped and which generally has a very high viscosity, is forced through nozzle capillary tubes which vary in form and is then, depending on the process, hardened into fibres in spinning and after-treatment steps specifically arranged for this.
Characteristics of quality are expected of a good spinning nozzle, such as the quality of the holes (exactness of measurement), the smoothness of the walls of the holes, the sharpness of the edges at the exit from the hole, the smoothness of the floor of the nozzle, corrosion-resistance and specially designed spinning channels. Not least, the requisite strength of the spinning nozzle must be mentioned, as the spinning nozzle is subjected to enormous compression load while spinning the stock. The use of spinning nozzles or spinning nozzle materials which have high strength is especially necessary when spinning - 2 •Ε 904289 cellulose stocks of high viscosity, as spinning pressures of up to 200 bar can occur.
These problems arise particularly with cellulose solutions which are produced in accordance with the NMMO-process. This process is known for instance from the examples given in DE-OS 29 13 589.
NMMO stands for N-methylmorpholine-N-oxide, a tertiary amine-N-oxide, which has the effect of a solvent on cellulose. Because of the high spinning viscosities, spinning nozzles have to be provided with reinforced spinning plates.
On the other hand, there is a tendency to increase the density of the capillary tubes of the spinning nozzles, in order to increase the performance per unit of surface of the spinning position. The problem then occurring is that the threads tend to stick together.
In order to be able to increase the density of the capillary tubes despite this, the viscosity of the threads has to be reduced.
This can be realised by a non-soluble liquid being applied to the surface of the newly-extended threads, in order to reduce the effect of the solvent (see DE-AS 28 44 163). Additionally, a polyalkylene ether, particularly polyethylene glycol, may be added to the tertiary 2θ amine oxide (see DD-PS 218 121).
There is therefore a demand for a spinning nozzle with a relatively large diameter and high capillary tube density and consequently a large number of capillary tubes, in order to spin the cellulose solution economically. At the same time, the spinning nozzle is to be capable of withstanding high pressures (up to 130 bar).
The known spinning nozzles to an extent have high capillary densities, but cannot withstand high spinning pressures : the spinning plate buckles or cracks. Such nozzles are employed in the viscose process.
On the other hand, spinning nozzles are known, which are made 30 of special types of steel and which are capable of withstanding high loads. Spinning nozzles of this kind are used in the dry spinning process for synthetic material melts. The disadvantage of this nozzle construction is however that as a result of the complex arrangement of the nozzle holes in the nozzle plate, pre-drilling is required in the relatively hard but strong material for the individual spinning capillary tubes, in order to be then able to mount the capillary tubes which have a precise diameter. As a result of the larger diameter of the pre-drilling, only a relatively small number of spinning capillary tubes are possible in the nozzle plate, which in turn results in a reduced capillary tube density.
It is an object of the present invention to provide a spinning nozzle which, on the one hand, withstands high spinning pressures and, on the other hand, has a high capillary tube density (capillary o tubes/mm ).
This object is achieved according to the invention by means of a spinning nozzle of the type initially described, in that the spinning plate consists of a stable carrier plate in which holes are provided and in that platelets are inserted into or pressed into the holes, into which in turn the capillary tubes are introduced. It is expedient for this that the carrier plate consist of high-grade steel and that the platelets consist of a material which is less hard than steel, in particular, a precious metal. At present gold, silver and tantalum are preferred.
According to the invention therefore, a carrier plate is used, the strength of which is designed to be sufficiently great for it to withstand high spinning pressures. It can also be made of material of any strength, as it does not itself have any spinning capillary tubes. Platelets, made for example from precious metal, are inserted into or pressed into the holes of the carrier plate, into which platelets, depending on the softness of the metal, the requisite number of spinning capillary tubes may be introduced without pre-drilling.
The holes in the carrier plate are preferably stepped holes, in which the step is located near the external surface of the carrier plate and the smaller diameter is at the external surface of the carrier plate. Consequently, the platelets which are inserted or pressed in are held to an additional extent and are able to withstand very high spinning pressures.
Finally, it is expedient for a perforated plate to be provided on the inside of the carrier plate and for a filter to be positioned between the carrier plate and the perforated plate. The holes of the perforated plate accord with the positioning of the platelets so that the cellulose solution or the polymeric melt is distributed as appropriate. Particles of dirt or undissolved polymeric fragments are retrained by the filter.
The invention is explained in more detail by way of example with reference to the accompanying drawings.
Fig. 1 shows a spinning nozzle according to the invention, in section; Fig. 2 shows the carrier plate of the spinning nozzle 15 according to Fig. 1, somewhat enlarged compared to Fig. 1 and partially in section; and Fig. 3 shows a platelet to be inserted into the carrier plate according to Fig 2, somewhat enlarged compared to Fig. 2 and partially in section.
The nozzle head 1 (Fig. 1) suitably consists of corrosionresistant high-grade steel. It has heating channels 6 for warming and it forms the upper section of the spinning nozzle, into which the cellulose solution is fed and where it is continually warmed during the spinning.
A perforated plate 3, a filter 4 and a carrier plate 2 are located in the nozzle head 1. These three elements are pressed onto the nozzle head 1 by a threaded nut 5. Soft packing (not illustrated) can be used for sealing.
The carrier plate 2 (see Fig. 2) has several holes, formed as 3q stepped holes 7. (For simplification, only a single hole 7 is illustrated in Fig. 2). Platelets 8 (see Fig. 3) which are made of relatively soft material are pressed into these holes. In this soft material, many capillary tubes 9 can easily be made, close to one another. (For simplification only a single capillary tube 9 is illustrated in Fig. 3).
The holes of the perforated plate 3 are positioned exactly as 5 the holes of the carrier plate 2, the filter 4 lying between them.
Depending on the cellulose solution or the polymeric melt, the filters 4 may have pores of widely varying widths and may consist of different materials. Corrosion resistant non-woven metal is preferred. The spinning stock is distributed over the perforated plate 3, is filtered, then enters the holes or stepped openings and from there enters the capillary tubes 9 of the platelets 8.
Despite the high resistance to pressure, a spinning nozzle formed according to the invention can achieve high capillary tube densities. Thus, for example, a spinning nozzle was developed, which has 1147 capillary tubes for a diameter of 45 mm (which is equivalent ο to 0.72 capillary tubes/mm ) and which is able for an operating pressure of ca. 85 bar. Another spinning nozzle had 1.19 capillary tubes/mm and was able for an operating pressure of 55 bar.
The construction of the nozzle as a whole from component parts 20 enables individual exchange of carrier plates with precious metal platelets, in which the capillary tubes have varying diameters, lengths and cross-sections.
Claims (5)
1. Patent Claims 1. A spinning nozzle having a nozzle head which is preferably provided with heating channels for warming, and having a spinning plate which has capillary tubes, characterised in that the spinning plate δ consists of a robust carrier plate in which holes are provided and in that platelets, in which the capillary tubes are provided, are inserted into or pressed into the holes.
2. A spinning nozzle according to Claim 1, characterised in that the carrier plate consists of high-grade steel. 10
3. A spinning nozzle according to Claim 1 or 2, characterised in that the platelets consist of a metal less hard than steel, in particular of a precious metal.
4. A spinning nozzle according to Claim 3, characterised in that the platelets consist of gold or silver. 15 5. A spinning nozzle according to Claim 3, characterised in that the platelets consist of tantalum.
5. A spinning nozzle according to one of Claims 1 to 5, characterised in that the holes in the carrier plate are stepped holes, in which the step is located near the external surface of the carrier 20 plate and the smaller diameter is at the external surface of the carrier plate. 7. A spinning nozzle according to one of Claims 1 to 6, characterised in that a perforated plate is provided on the inside of the carrier plate and that a filter is positioned between the carrier 25 plate and the perforated plate. 8. A spinning nozzle substantially as described herein with reference to and as shown in the accompanying drawings
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT0272489A AT397392B (en) | 1989-11-29 | 1989-11-29 | SPIDER NOZZLE |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IE904289A1 true IE904289A1 (en) | 1991-06-05 |
| IE69038B1 IE69038B1 (en) | 1996-08-07 |
Family
ID=3539303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IE428990A IE69038B1 (en) | 1989-11-29 | 1990-11-28 | Spinning nozzles |
Country Status (23)
| Country | Link |
|---|---|
| EP (1) | EP0430926B1 (en) |
| JP (1) | JPH03174006A (en) |
| KR (1) | KR0157408B1 (en) |
| CN (1) | CN1052155A (en) |
| AT (2) | AT397392B (en) |
| AU (1) | AU6657690A (en) |
| BR (1) | BR9006022A (en) |
| CA (1) | CA2030043A1 (en) |
| CZ (1) | CZ283858B6 (en) |
| DE (1) | DE59009625D1 (en) |
| DK (1) | DK0430926T3 (en) |
| ES (1) | ES2024388T3 (en) |
| FI (1) | FI92845C (en) |
| GR (1) | GR910300097T1 (en) |
| IE (1) | IE69038B1 (en) |
| IL (1) | IL96314A0 (en) |
| NO (1) | NO176445C (en) |
| PL (1) | PL165105B1 (en) |
| PT (2) | PT96019A (en) |
| RO (1) | RO108011B1 (en) |
| RU (1) | RU1838462C (en) |
| TR (1) | TR27239A (en) |
| YU (1) | YU48011B (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATA53792A (en) * | 1992-03-17 | 1995-02-15 | Chemiefaser Lenzing Ag | METHOD FOR PRODUCING CELLULOSIC MOLDED BODIES, DEVICE FOR IMPLEMENTING THE METHOD AND USE OF A SPINNING DEVICE |
| US5652001A (en) * | 1993-05-24 | 1997-07-29 | Courtaulds Fibres Limited | Spinnerette |
| TR28441A (en) * | 1993-05-24 | 1996-07-04 | Courtaulds Fibres Holdings Ltd | Spinning cells that can be used to coagulate lyocell filaments. |
| US5984655A (en) * | 1994-12-22 | 1999-11-16 | Lenzing Aktiengesellschaft | Spinning process and apparatus |
| DE10043297B4 (en) * | 2000-09-02 | 2005-12-08 | Thüringisches Institut für Textil- und Kunststoff-Forschung e.V. | Process for the production of cellulose fibers and cellulose filament yarns |
| RU2215071C1 (en) * | 2002-05-18 | 2003-10-27 | Открытое акционерное общество "Чепецкий механический завод" | Spinneret for forming of chemical fibers and filaments from solutions |
| AT413545B (en) * | 2003-07-14 | 2006-03-15 | Chemiefaser Lenzing Ag | METHOD FOR THE PRODUCTION OF CELLULOSIC FORM BODIES |
| EP2565304A1 (en) | 2011-09-02 | 2013-03-06 | Aurotec GmbH | Extrusion method and device |
| EP2565303A1 (en) | 2011-09-02 | 2013-03-06 | Aurotec GmbH | Extrusion method |
| CN103352258A (en) * | 2013-07-08 | 2013-10-16 | 常熟市沪联印染有限公司 | Spinneret device with filter screen |
| CN104762671B (en) * | 2015-04-16 | 2017-01-04 | 湖州旭彩高新纤维有限公司 | A kind of fiber heating spinning appts |
| KR102002726B1 (en) | 2018-05-08 | 2019-07-23 | 조승형 | Nozzle fixing device for melt spinning system |
| CN108525282A (en) * | 2018-06-15 | 2018-09-14 | 广东工业大学 | A kind of encephalatrophy the elderly rehabilitation material |
| EP3702496A1 (en) | 2019-02-26 | 2020-09-02 | Lenzing Aktiengesellschaft | Mould and method for manufacturing a mould for extruding cellulose moulded bodies |
| EP3901333A1 (en) | 2020-04-22 | 2021-10-27 | Aurotec GmbH | Production of filaments with controlled gas flow |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE360000C (en) * | 1920-06-11 | 1922-09-28 | Romuald Kuehnel | Spinnerets and processes for their manufacture |
| BE477016A (en) * | 1946-12-02 | |||
| DE808872C (en) * | 1948-10-02 | 1951-07-19 | Degussa | Spinneret for the production of fully synthetic threads |
| NL69191C (en) * | 1949-11-23 | |||
| NL6600025A (en) * | 1966-01-04 | 1967-01-25 | ||
| GB1126609A (en) * | 1966-07-20 | 1968-09-11 | Du Pont | Spinneret |
| US3737506A (en) * | 1970-04-03 | 1973-06-05 | Viscose Suisse Soc D | Process and apparatus for continuous extrusion of highly-viscous melts |
-
1989
- 1989-11-29 AT AT0272489A patent/AT397392B/en not_active IP Right Cessation
-
1990
- 1990-11-02 FI FI905437A patent/FI92845C/en not_active IP Right Cessation
- 1990-11-05 CZ CS905427A patent/CZ283858B6/en not_active IP Right Cessation
- 1990-11-12 IL IL96314A patent/IL96314A0/en unknown
- 1990-11-13 AU AU66576/90A patent/AU6657690A/en not_active Abandoned
- 1990-11-15 CA CA002030043A patent/CA2030043A1/en not_active Abandoned
- 1990-11-15 YU YU217990A patent/YU48011B/en unknown
- 1990-11-19 KR KR1019900018732A patent/KR0157408B1/en not_active IP Right Cessation
- 1990-11-21 JP JP2314505A patent/JPH03174006A/en active Pending
- 1990-11-26 RO RO146425A patent/RO108011B1/en unknown
- 1990-11-27 DE DE59009625T patent/DE59009625D1/en not_active Expired - Fee Related
- 1990-11-27 EP EP90890308A patent/EP0430926B1/en not_active Expired - Lifetime
- 1990-11-27 ES ES90890308T patent/ES2024388T3/en not_active Expired - Lifetime
- 1990-11-27 PL PL90287957A patent/PL165105B1/en unknown
- 1990-11-27 AT AT90890308T patent/ATE127542T1/en not_active IP Right Cessation
- 1990-11-27 DK DK90890308.1T patent/DK0430926T3/en not_active Application Discontinuation
- 1990-11-28 IE IE428990A patent/IE69038B1/en not_active IP Right Cessation
- 1990-11-28 NO NO905145A patent/NO176445C/en unknown
- 1990-11-28 BR BR909006022A patent/BR9006022A/en not_active Application Discontinuation
- 1990-11-28 PT PT96019A patent/PT96019A/en active IP Right Grant
- 1990-11-28 RU SU904831762A patent/RU1838462C/en active
- 1990-11-29 CN CN90109549A patent/CN1052155A/en active Pending
- 1990-12-04 TR TR01107/90A patent/TR27239A/en unknown
-
1991
- 1991-12-10 GR GR91300097T patent/GR910300097T1/en unknown
-
1992
- 1992-05-08 PT PT8495U patent/PT8495U/en not_active IP Right Cessation
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM4A | Patent lapsed |