CN110997991A - Device for producing synthetic threads - Google Patents
Device for producing synthetic threads Download PDFInfo
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- CN110997991A CN110997991A CN201880049975.XA CN201880049975A CN110997991A CN 110997991 A CN110997991 A CN 110997991A CN 201880049975 A CN201880049975 A CN 201880049975A CN 110997991 A CN110997991 A CN 110997991A
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- godet
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- 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
- D01D13/00—Complete machines for producing artificial threads
- D01D13/02—Elements of machines in combination
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- 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
- D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
- D01D10/02—Heat treatment
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- 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
- D01D13/00—Complete machines for producing artificial threads
-
- 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
- D01D5/12—Stretch-spinning methods
- D01D5/16—Stretch-spinning methods using rollers, or like mechanical devices, e.g. snubbing pins
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
The invention relates to a device for producing synthetic threads, in particular polyamide threads, comprising a spinning device (1), a cooling device (2), a godet device (6) and a winding device (11). The godet mechanism (6) has a first group of driven godets (7) for drawing the yarn from the spinning mechanism, a second group of driven godets (8) for yarn relaxation, and a third group of driven godets (9) for yarn post-processing, wherein the godet groups (7,8,9) are arranged one after the other with respect to the yarn direction. In order to achieve a high-force shrinkage treatment, in particular with little complexity with regard to the apparatus, the godets of the first godet group are designed as short godets with single-yarn windings, the godets of the second godet group are designed as long godets with multiple-yarn windings, and the godets of the third godet group are designed as short godets with single-yarn windings.
Description
The invention relates to a device for producing synthetic threads, in particular polyamide threads, according to the preamble of claim 1.
It is well known in the melt spinning manufacture of synthetic yarns that the physical properties of a yarn extruded from a polymer melt are determined by the withdrawal of the yarn from a spinning nozzle, drawing the yarn and relaxing the yarn. These process steps are basically performed by a godet mechanism consisting of a plurality of godets including a rotating godet sleeve. The godet sleeves of the godets of the godet mechanism are designed to be heated or unheated in order to obtain a defined yarn treatment for drawing, drafting and relaxation. Such an apparatus for manufacturing synthetic yarns is disclosed for example by WO2016/058873a 1. In the known device, the godet mechanism for drawing the yarn from the spinning mechanism is formed by a plurality of groups of godets. Thus, a first plurality of driven godets is used to draw the yarn from the spinning mechanism. The yarn is slackened on a second godet roller group with a plurality of driven godets. The subsequent yarn post-treatment is carried out by means of a third plurality of driven godets, wherein the godets are arranged one behind the other with respect to the yarn course. In this case, the threads are each guided in a single-punch winding on the circumference of the godet roller jacket of the godet roller. For this reason, the yarn contact length on the circumference of the godet roller jacket of the godet roller is limited to partial windings, respectively, so that, in particular, the minimum contact length required for heating the yarn can only be achieved by adding a godet roller.
In particular, in the production of polyamide yarns, a powerful heat treatment is required during the relaxation of the yarn in order to achieve the desired elimination of shrinkage, so that relatively many godets are required in this known device.
The object of the present invention is to further develop a device for producing synthetic yarns, in particular polyamide yarns, of the type mentioned in the introduction in such a way that the drawing off, drafting, relaxation and post-treatment of the yarn can be carried out with as low a control cost as possible and with as low a plant cost as possible.
According to the invention, this object is achieved in that the godets of the first godet group are designed as short godets with single yarn windings, the godets of the second godet group are designed as long godets with multiple yarn windings, and the godets of the third godet group are designed as short godets with single yarn windings.
Advantageous developments of the invention are defined by the features and combinations of features of the respective dependent claims.
The invention has the particular advantage that especially the yarn relaxation can be performed with a minimum number of godets. Furthermore, no additional heating medium, such as for example hot steam, is required. The yarn can thus be guided over the circumference of the long godet roll in the desired number of windings depending on the relaxation requirements. The combination of a short godet at the inlet of the long godet and a short godet at the outlet of the long godet has the advantage that the depth of the machine determined by the long godet remains limited.
In order to be able to bring the thread on each of the long godets into contact for the heat treatment, each of the long godets of the second godet group has a jacket heating device for heating the godet jacket. Therefore, the number of long godets required for guiding the yarn in multiple windings can be limited to a minimum. Depending on the requirements of the heat treatment of the thread during the relaxation, the sleeve heating device has one heating zone or alternatively also a plurality of controllable heating zones in the axial direction of the thread-guiding roller sleeve. In this case, the godet roller sleeve is preferably designed with a plurality of controllable heating zones, so that even with a constant surface temperature of the godet roller sleeve, large heat losses will generally be compensated for in the edge region of the long godet roller.
In order to be able to guide the yarn after drawing with a sufficient contact length on the heated godet roller of the long godet roller, a minimum sleeve length and a minimum sleeve diameter are to be observed on the long godet roller. It is therefore provided that the jacket length and the jacket diameter of the godet jacket of one of the long godet rolls are designed to be at least 2 to 5 times greater than the jacket length and the jacket diameter of the godet jacket of one of the short godet rolls. Thus, a contact length sufficient for drawing the synthetic yarn loose can already be achieved with two long godets in a double arrangement. The sleeve diameter on the long godet roller is preferably at least 1.8 to 3 times greater than the sleeve diameter of the godet roller sleeve of the short godet roller.
In order to draw the yarn in a defined manner, it is also provided that the short godets of the first godet group and the adjacent long godets of the second godet group are arranged in an axially parallel manner and form a drawing zone for drawing the yarn. Thus, the yarn in the full draft state can be fed to the long godet. The speed difference between the short godet rollers of the first godet roller group and the long godet rollers of the second godet roller group is adjusted accordingly.
In particular, in the production of polyamide yarns, it is undesirable to have the guide roller sets interact with one another. The invention is particularly advantageous in that the godet roller housings of the long godets are arranged in a thermally insulated godet roller box, wherein the godet roller box has one of a plurality of yarn openings in each case opposite the short godet rollers of the first godet roller group and the short godet rollers of the third godet roller group. Thus, yarn withdrawal and yarn post-treatment can take place in an environment that is not affected by heat radiation from the long godet rolls.
In order to achieve a design according to the specified drawing point and a short drawing zone as far as possible, the invention is preferably implemented in that the guide roller sleeves of the short guide rollers in the first guide roller group have the same design and are not heated. Thus, the yarn can be drawn substantially in the cold state. Thus, the yarn can be drawn to the thermodynamic state produced by the cooling mechanism. For this reason, a very limited design of the drafting points in the yarn is obtained, so that a full draft is ensured in the drafting zone.
The development of the invention in which the guide roller sleeves of the short guide rollers of the third guide roller group have the same design and are not heated is also very advantageous in the production of polyamide yarns. Thus, a relatively rapid cooling of the relaxed yarn can be obtained, which has a very positive effect on the development of the physical properties in particular. For the yarn guidance and for the stability of the process, the development of the invention is specified in that an oiling device for wetting the yarn is arranged between the cooling device and the first guide roller group. For this reason, the provision of water-oil emulsions may be particularly advantageous for the polymer properties of the polyamide.
The device according to the invention is particularly suitable for producing a multiplicity of polymer synthetic threads for textile or engineering applications, wherein the threads are guided in the form of thread pieces in parallel side by side on the godet sleeves of short and long godets. For example, the winding device can wind 8, 10 or 12 threads simultaneously on a winding spindle to form a bobbin. It is preferred to produce more yarn in the spinning mechanism, which is then distributed to two side-by-side winders.
The invention is described in detail below with reference to several embodiments of the device for manufacturing polyamide yarns according to the invention and with reference to the attached drawings, in which:
figure 1 schematically shows a side view of a first embodiment of the device according to the invention,
figure 2 schematically shows a front view of the embodiment of figure 1,
FIG. 3 schematically illustrates a partial top view of a godet mechanism according to the embodiment of FIG. 1, an
Fig. 4 schematically shows a side view of another embodiment of the device according to the invention.
Fig. 1 and 2 show schematically, from various perspectives, a first exemplary embodiment of an apparatus according to the invention for producing a plurality of synthetic threads, in this case polyamide threads. Fig. 1 shows this embodiment in a side view and fig. 2 shows it in a front view. If one of the figures is not explicitly mentioned, the following description applies to both figures.
This embodiment has a spinning device 1, a cooling device 2, a godet device 6 and a winding device 11, which are arranged one above the other in order to obtain a substantially vertically oriented yarn course when producing a plurality of synthetic yarns.
The spinning device 1 has a heated spinning beam 1.1, which has a plurality of spinning nozzles 1.2 on its underside. In this example, four spinning nozzles 1.2 are held on the spinning beam 1.1. The number of spinning nozzles 1.2 on the spinning beam 1.1 is exemplary. In fact, in most cases, more spinning nozzles or double spinning nozzles are used simultaneously to extrude the yarn. The spinning nozzle 1.2 is connected to a melt distribution system, not shown in detail here, which has a spinning pump 1.3 fixed on the top side of the spinning beam 1.1. The spinning pump 1.3 is designed as a four-way pump, so that each spinning nozzle 1.2 is supplied with a separate melt stream. For this purpose, the spinning pump 1.3 is preferably designed as a planetary gear pump. The spinning pump 1.3 is driven by a pump drive. The supply of the polymer melt now takes place via a melt inlet 1.4, which is connected to a spinning pump 1.3.
Below the spinning device 1, a cooling device 2 is provided, which has a cooling cylinder 2.1 for each spinning nozzle 1.2. The cooling drum 2.1 is designed to be air-permeable and is arranged in the blowing chamber 2.2. The blowing chamber 2.2 is connected to a distribution chamber 2.3, which is connected to an air supply channel 2.4, by means of an orifice plate. Thus, the cooling medium enters the blowing chamber 2.2 through the distribution chamber 2.3 and passes through the gas-permeable cylinder wall of the cooling cylinder 2.1. In the cooling drum 2.1, the filament bundles of the thread which are respectively extruded through the spinning nozzles 1.2 are guided.
The design of the cooling mechanism 2 is exemplary. In principle, the filaments produced below the spinning beam can also be cooled by a transversely oriented cooling air flow.
Since each extruded synthetic yarn 12 is made up of a number of filament bundles, the merging of the filaments of each yarn is carried out at the outlet of the cooling means 2. For this purpose, an oiling device 3 is arranged below the cooling device 2. The preparation device 3 has a preparation needle 3.1 for each thread 12, in each case essentially centrally below the spinning nozzle 1.2. The upper oiling needle 3.1 is connected via an upper oiling nipple 3.2 to a fluid pump for fluid supply, not shown here. The oiling needle 3.1 is associated in this exemplary embodiment with a focusing thread guide 4 for collecting the threads to form a thread 12. In principle, the bundling can also be performed by means of a correspondingly designed oiling needle.
Below the cooling device 2, a godet unit 6 with a plurality of godet roller sets 7,8 and 9 is provided for drawing, drafting and relaxing the yarn. However, in order to receive the yarn 12, the yarns must first be gathered in accordance with a process pitch suitable for the godet mechanism 6. In this connection, a comb-like thread guide 5 is provided on the entry side of the godet mechanism 6 for merging the threads 12 with one another with a thread spacing that is as small as possible. The process spacing between adjacent yarns is now in the range of 4-8 mm. The distance between the cooling device 2 and the godet device 6 is thus used for the union of the thread sheets. The path is selected such that the maximum deflection of the outer yarn is not exceeded.
In order to draw off the thread from the spinning nozzle 1.2 of the spinning device 1, the godet device 6 has a first godet group 7. The first guide roller group 7 is formed by a plurality of short guide rollers 7.1, wherein the thread sheet is guided on the guide roller sleeve 7.2 in a single winding. The godet roller sleeves 7.2 of the short godet rollers 7.1 are each driven by a godet roller drive 7.3. The short guide rollers 7.1 of the first guide roller group 7 are held by a frame 15. The godet roller sleeves 7.2 on the short godet rollers 7.1 are designed to be identical and not heated. The yarn 12 is guided over the circumference of the godet sleeve 7.2 at a wrap angle of at most 270 °.
In order to draft the yarn 12, a draft zone is formed between the first guide roller group 7 and the second guide roller group 8. The second godet roller group 8 has a plurality of long godet rollers 8.1, on whose godet roller sleeves 8.2 the yarn web is guided in a multiply wound manner. The godet roller sleeves 8.2 are each driven by a godet roller drive 8.3 and have a sleeve heating 8.4.
The long godet 8.1 of the second godet group 8 is also held in an overhanging manner on the machine frame 15. In this case, the first long godet roll 8.1 of the second godet roll group 8 is oriented axially parallel to the adjacent short godet roll 7.1 of the first godet roll group 7. A defined drafting zone is thus formed between the last short godet roll 7.1 of the first godet roll group 7 and the first long godet roll 8.1 of the second godet roll group 8.
The long godet 8.1 is shielded from the environment and is held together with the godet sleeve 8.2 in the godet box 14. For guiding the thread, the thread guide roller box 14 has a first thread opening 14.1 opposite the first thread guide roller group 7 and a second thread opening opposite the first thread guide roller group 7
The second yarn opening 14.2 opposite the third guide roller group 9.
The third guide-roller group 9 is arranged below the first guide-roller group 7 and the second guide-roller group 8. The first guide-roller group 7 and the second guide-roller group 8 are in this case held side by side in position on the machine frame 15.
The third guide roller group 9 is arranged on a guide roller frame 16, which is supported on the frame 11.8 of the winding mechanism 11. The third guide roller group 9 has in this exemplary embodiment two short guide rollers 9.1 each having a driven guide roller sleeve 9.2. The godet drive 9.3 of the short godet 9.1 is arranged on the opposite side of the godet frame 16. The thread sheet of the thread 12 is guided in a single winding on the thread guide roller sleeve 9.2 of the short thread guide roller 9.1. Between the two short godet rolls 9.1 of the third godet roll group, an eddy-current texturing device 10 is provided, which has an eddy-current texturing channel, not shown in detail here, for each thread 2 of the thread package for the eddy-current texturing of the thread. The godet jackets 9.2 of the short godets 9.1 are designed to be identical and also unheated, so that the thread sheet drawn off by the long godets 8.1 is already cooled outside the godet box 14.
As can be seen in particular from the illustration in fig. 1, the last short guide roller 9.1 of the third guide roller group 9 is arranged laterally to the winding positions 11.1 of the winding mechanism 11. In the winding position 11.1, the threads 12 are each wound to form a bobbin 13. The winding position 11.1 has the same structure and has a deflecting roller 11.2 and a traverse reciprocating unit 11.3, respectively. A deflecting roller 11.2 is arranged immediately after the third guide-roller group 9 in order to guide the yarn and to separate it into the winding position 11.1.
The bobbins 13 are wound simultaneously on the winding spindle 11.5 and a further second winding spindle 11.6, which is fixed to the winding turret 11.7. The winding spindles 11.5 and 11.6 can be alternately moved into the working area and the replacement area by rotating the winding turret 11.7. For the yarn 12 to rest on the surface of the bobbin 13, a pressure roller 11.4 is provided, which bears against the circumference of the bobbin 13. For this purpose, the pressure roller 11.4 is movably held in the frame 11.8.
The drive mechanism of the winding mechanism 11 is not shown here, since such automatic winding mechanisms are already known from the prior art.
In the embodiment shown in fig. 1 and 2, the godet mechanism 6 is formed by a plurality of godet groups 7,8 and 9 with short godets 7.1 and 9.1 and a long godet 8.1. Fig. 3 schematically shows a partial top view of two guide roller sets 7, 8. In this case, a short godet 7.1 and a long godet 8.1 are held suspended on the machine frame 15. The short godet 7.1 has a godet sleeve 7.2, the diameter of which is marked by the letter D1And (4) showing. The jacket length of the godet jacket 7.2 of the short godet 7.1 is designed according to the number of threads guided in the form of a sliver and is marked there with the reference letter L1And (4) showing.
The long godet 8.1 of the second godet group 8 has a godet sleeve 8.2, the diameter of which is many times greater and the sleeve length is longer. For the production of polyamide yarns, the jacket length of the godet jacket 8.2 of the long godet 8.1 is designed to be 2 to 5 times greater and the jacket diameter 1.8 to 3 times greater. In this connection, a significant increase in the contact length between the yarn and the guide roller sleeve 8.2 is obtained.
By the length L of the sleeve on the long godet roller 8.12The number of yarn windings can be determined. It is therefore usual for the thread sheet used for producing the polyamide thread to be guided over the long godet 8.1 in a winding manner of 3 to 6 turns.
A heating device 8.4 is formed in the guide roller sleeve 8.2. The jacket heating device 8.4 has a plurality of heating zones 8.5 in this exemplary embodiment. In this case, each of the heating zones 8.5 of the jacket heating means 8.4 can be controlled individually by means of a heating control device 8.6. The godet roller jacket 8.2 of the long godet roller 8.1 is preferably heated to a surface temperature which must be as constant as possible in the end-to-end region of the godet roller jacket 8.2. In this connection, these heating zones 8.5 can be used to compensate for heat losses at the end of the guide roller sleeve 8.2. However, it is alternatively possible to generate different surface temperatures over the length of the guide roller sleeve 8.2. It is likewise possible to heat the godet roller jacket 8.2 of the long godet roller 8.1 with a jacket heating and only one heating zone 8.5.
The following applies therefore to the embodiment of short godet 7.1 and long godet 8.1 as shown in fig. 3:
sleeve length L2≥2-5x L1，
Diameter D of the sleeve2≥1.8-3x D1。
In the embodiment of the device according to the invention for producing synthetic threads, as shown in fig. 1 and 2, a plurality of thin filament bundles are first extruded from a polymer melt, in this case polyamide, for each spinning nozzle 1.2, which after cooling are conformed by wetting and union to form four multifilament threads 12. The thread 12 is drawn off as a thread sheet by means of the first godet roll group 7 with unheated stub godets 7.1. In this exemplary embodiment, a total of three short guide rollers 7.1 are provided in the first guide roller group 7 for the extraction. The short godet 7.1 can now be driven with a small speed difference to build up the yarn tension. The drawing of the thread 12 is then carried out in the drawing zone between the first guide-roller group 7 and the second guide-roller group 8. In the first godet roll group 7, the yarn is guided in single winding for subsequent reception in multiple winding on the godet roll jacket 8.2 of the long godet roll 8.1. The godet sleeve 8.2 of the long godet roll 8.1 is set to a temperature in the range of 130 to 190 ℃ for polyamide yarn relaxation. With a multiple of the sleeve length and a multiple of the increased sleeve diameter, a sufficient shrinking process is already achieved with two long godets 8.1. The godet roller sleeve 8.2 of the long godet roller 8.1 is preferably driven at a constant circumferential speed. However, it is also possible in principle to achieve a small speed difference by means of a stepped diameter on the thread guide roller sleeve 8.2 in order to eliminate the tension on the thread.
After relaxation, the yarn 12 is taken up and cooled by the third guide-roller group 9. For this purpose, the third guide-roller group 9 has two unheated short guide rollers 9.1, which are preferably designed identically to the short guide rollers 7.1 of the first guide-roller group. In order to improve the yarn tightness, the yarn is swirled in a swirling device 10 before winding.
The yarn 12 post-treatment as shown in fig. 1 and 2 is exemplary. In order to promote cooling of the yarn, in particular after the shrinking process, an alternative embodiment of the device according to the invention is schematically illustrated in a side view in fig. 4. The embodiment according to fig. 4 is substantially identical to the embodiment according to fig. 1 and 2, so that only the differences are explained here, and reference is made to the previous description.
In the device for producing a plurality of synthetic threads as shown in fig. 4, the third guide-roller group 9 is formed by a total of three short guide rollers 9.1. In particular, an additional cooling path between the short godets 9.1 can thus be implemented to cool the yarn. In this case, it is also possible to incorporate an alternative after-oiling in the after-treatment of the thread 12. For this purpose, an optional post-oiling device is indicated by reference numeral 17 in fig. 4 and is indicated by a dashed line.
The device of the invention is described by way of example with reference to the production of polyamide yarns. In principle, however, it is also possible to use the device according to the invention for producing yarns of polyester or other polymers. The second godet roller group 8 can alternatively be formed by a heated long godet roller 8.1 and an unheated long godet roller or an undriven auxiliary guide roller.
Claims (10)
1. An apparatus for producing synthetic threads, in particular polyamide threads, having a spinning device (1), a cooling device (2), a godet device (6) and a winding device (11), wherein the godet device (6) has a first godet set (7) which is driven for drawing the thread from the spinning device, a second godet set (8) which is driven for relaxing the thread and a third godet set (9) which is driven for post-processing the thread, wherein the godet sets (7,8,9) are arranged one behind the other with respect to the thread direction, characterized in that the godets of the first godet set (7) are designed as short godets (7.1) with single-yarn windings, the godets of the second godet set (8) are designed as long godets (8.1) with multiple-yarn windings, and the godets of the third godet group (9) are designed as short godets (9.1) with the singles yarn winding.
2. Device according to claim 1, characterized in that the long godets (8.1) of the second godet group (8) each have a jacket heating device (8.4) for heating a godet jacket (8.2).
3. Device according to claim 2, characterized in that the sleeve heating means (8.4) have one or more controllable heating zones (8.5) in the axial direction of the guide roller sleeve (8.2).
4. Device according to claim 2 or 3, characterized in that the godet sleeve (8.2) of one of the long godets (8.1) has at least such a sleeve length (L)2) The sleeve length is designed to be longer than the sleeve length (L) of the guide roller sleeve (7.2) of one of the short guide rollers1) 2 to 5 times larger.
5. The device according to any of claims 2 to 4, characterized in that the godet roller jacket (8.2) of one of the long godets (8.1) has at least such a jacket diameter (D)2) The sleeve diameter (D) of the guide roller sleeve (7.2) of one of the short guide rollers (8.1) is greater than the sleeve diameter (D)1) 1.8 to 3 times larger.
6. The device according to any of claims 1 to 5, characterized in that the short godets (7.1) of the first godet group (7) and the adjacent long godets (8.1) of the second godet group (8) are arranged axially parallel to each other and form a drafting zone for drafting the yarn.
7. The device according to one of claims 1 to 6, characterized in that the godet jackets (8.2) of the long godets (8.1) are arranged in a thermally insulated godet box (14), wherein the godet box (14) has one yarn opening of a plurality of yarn openings (14.1,14.2) in each case with respect to the short godets (7.1) of the first godet group (7) and the short godets (9.1) of the third godet group (9).
8. The device according to one of claims 1 to 7, characterized in that the guide roller sleeves (7.2) of the short guide rollers (7.1) of the first guide roller group (7) are of identical design and are not heated.
9. Device according to one of claims 1 to 8, characterized in that the guide roller sleeves (9.2) of the short guide rollers (9.1) of the third guide roller group (9) are of identical design and are not heated.
10. Device according to any of the preceding claims 1 to 9, characterized in that an oiling device (3) for wetting the yarn is arranged between the cooling means (2) and the first guide-roller group (7).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102017007284.1 | 2017-08-01 | ||
| DE102017007284 | 2017-08-01 | ||
| PCT/EP2018/070194 WO2019025263A1 (en) | 2017-08-01 | 2018-07-25 | Apparatus for producing synthetic threads |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110997991A true CN110997991A (en) | 2020-04-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880049975.XA Pending CN110997991A (en) | 2017-08-01 | 2018-07-25 | Device for producing synthetic threads |
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| Country | Link |
|---|---|
| JP (1) | JP2020529527A (en) |
| CN (1) | CN110997991A (en) |
| DE (1) | DE112018003953A5 (en) |
| WO (1) | WO2019025263A1 (en) |
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| FR3137926A1 (en) * | 2022-07-18 | 2024-01-19 | Decathlon | Process for manufacturing an elastic thread by extrusion melt spinning |
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| Publication number | Publication date |
|---|---|
| JP2020529527A (en) | 2020-10-08 |
| DE112018003953A5 (en) | 2020-05-07 |
| WO2019025263A1 (en) | 2019-02-07 |
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Application publication date: 20200410 |