Classifications

• • D—TEXTILES; PAPER
  • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
  • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
  • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
  • D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
  • D02G1/0206—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist by false-twisting
  • D02G1/0266—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist by false-twisting false-twisting machines
• • 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
  • D01D5/22—Formation of filaments, threads, or the like with a crimped or curled structure; with a special structure to simulate wool

Definitions

• the invention relates to a method for spinning and texturing a multifilament composite thread according to the preamble of claim 1 and an apparatus for carrying out the method according to the preamble of claim 8.
• a generic method and a generic device for spinning and texturing a multifilament composite thread is known from EP 0 784 109 A2.
• partial threads are first spun in parallel next to one another by means of spinning agents from a thermoplastic melt, cooled and pretreated separately.
• the partial threads are pulled together from the spin agent by a take-off device and stretched before texturing.
• these are textured together or in parallel next to one another and then brought together to form a composite thread.
• the known method aims to change the appearance of the composite thread by separate compacting, essentially by separate intermingling or separate texturing of the differently colored partial threads.
• visual properties represent only part of the properties of the yarn produced which are desired for further processing.
• the physical properties such as strength and elongation have priority over the visual properties.
• the known method and the known device represent only a subordinate role in the production of high quality composite threads.
• the method known from EP 0 861 931 A2 also tries to influence the visual properties of a composite thread formed from the partial threads by treating individual thread parts separately and individually.
• freshly spun and drawn or drawn from a spool drawn partial threads are treated separately in different ways by swirling, texturing or by false twist and brought together to form a composite thread.
• Another object of the invention is to provide a method and an apparatus by means of which partial threads or threads spun in parallel can be treated with maximum flexibility up to the winding.
• the invention is based on the knowledge that parallel spun partial threads made from a base polymer by adding different additives, for example by different coloring, have an individual molecular structure after spinning, which result in different physical properties when the partial threads are guided and stretched together Properties in particular would affect different strengths.
• This is where the invention comes into play, in that at least one of the partial threads is drawn separately and independently of the other partial threads before texturing. It was found, for example, that when a composite thread is made from a blue colored partial thread made of polypropylene and a second non-colored thread made from polypropylene, different drawing ratios lead to the respective maximum strengths with at the same time the lowest remaining elongations in the partial thread.
• the blue-colored partial thread required a draw ratio of 1: 2.5 and the non-colored partial thread required a draw ratio of 1: 3.5.
• the invention thus enables the physical properties of the partial threads to be influenced in such a way that a composite thread with maximum strength and at the same time the lowest residual elongation can be produced.
• the partial thread is drawn off separately and independently of the other partial threads at a take-off speed which is not equal to the take-off speeds of the other partial threads is.
• each separate thread is assigned a plurality of separate delivery mechanisms, by means of which the partial threads are drawn off separately during spinning and guided separately for stretching, the maximum strength with the least residual elongation can be set on each of the partial threads. This enables a very uniform and high quality crimp to be achieved on each of the part threads after texturing.
• the partial threads can advantageously be intermingled separately by means of a pressure fluid before stretching.
• the upsetting principle is preferably used for texturing.
• the partial threads can be stowed in a stuffer box both separately and together to form a thread plug. Due to the high strength of the part threads, very high thread plug densities can be achieved, which leads to an intensive formation of loops and arches in the individual filaments of the part threads and thus result in an intensive crimping.
• the composite thread Before the composite thread is wound up, it is preferably formed by swirling or by texturing the partial thread.
• the choice of how the partial threads are brought together to form the composite thread is essentially determined by the desired visual properties of the composite thread. In order, for example, to obtain a clear, highlighted mixed color in the case of a multicolor thread, the composite thread is preferably produced by swirling after the separate texturing of the partial thread.
• the take-off means is formed by a plurality of separate delivery mechanisms, at least one of the delivery mechanisms being assigned to one of the partial threads and the partial threads being drawn separately and independently of the other partial threads by the delivery mechanism.
• the delivery mechanism assigned to the partial thread is individually drivable and controllable, so that an individual setting for pulling and stretching the partial thread is possible.
• the delivery plants can be driven or controlled individually or in groups.
• the texturing agent is preferably formed by a delivery nozzle and a stuffer box which interacts with the delivery nozzle.
• the delivery nozzle is preferably operated with a hot delivery medium, so that at the same time a thermal treatment of the partial thread or the thread plug formed takes place.
• a cooling device is provided, by means of which the thread plugs are cooled by means of a cooling medium.
• the method and the device according to the invention are also suitable for producing a composite thread, the partial threads of which are spun from different polymers.
• all known polymer materials such as polyamide, polyester or polypropylene can be spun.
• the method according to the invention can advantageously be used.
• the threads are spun in parallel from a polymer melt, cooled and, before texturing, drawn separately and independently of one another by a plurality of delivery units assigned to the threads. After stretching, the threads are separately textured and each wound into bobbins.
• the method according to the invention can also preferably be used for producing threads of the same type. However, the individual treatment of the partial threads up to the winding is preferably used when the threads have different properties.
• FIG. 1 schematically in the first embodiment of the device according to the invention
• FIG. 2 schematically shows another exemplary embodiment of the device according to the invention
• Fig. 5 schematically shows another exemplary embodiment of a device for performing the method according to the invention
• the device has a spinning means 1 which is connected to one or more melt generators (not shown here).
• the spin agent 1 has a heated spinning beam 2 which carries several spinnerets 3.1 to 3.3 side by side.
• the spinnerets 3.1 to 3.3 each have a plurality of nozzle bores on their undersides, through which the polymer melt streams fed to the spinnerets 3.1 to 3.3 are extruded under pressure to form a large number of individual filaments.
• a cooling shaft 4 is provided below the spinning beam 2, through which the extruded filaments are guided, so that the filaments emerging at approximately the melt temperature be cooled.
• the cooling shaft 4 could, for example, be connected to a blower through which a cooling air is blown essentially transversely onto the filaments.
• the filament strands assigned to each of the spinnerets 3.1, 3.2 and 3.3 are brought together to form a partial thread 6.1, 6.2 and 6.3 by the thread guides 5.1, 5.2 and 5.3 at the outlet of the cooling shaft 4.
• a draw-off means 10 is arranged downstream of the spin agent 1 in order to
• the deduction means 10 is formed by a plurality of delivery mechanisms 14.1 to 14.6, the individual
• Sub-threads 6.1, 6.2 and 6.3 are assigned. So the partial thread 6.1 by the supplying unit 14.1, the partial thread 6.2 by the supplying unit 16.2 and the partial thread
• the feed mechanisms 14.1 to 14.6 are each formed by a driven godet and an associated idler roller, which are wrapped several times by the respective thread, in particular the drives of the feed mechanisms 14.1, 14.2 and 14.3 can be controlled independently of one another, so that a take-off speed adapted to the respective thread is adjusted can be.
• the supply mechanisms 14.1, 14.2 and 14.3 are each followed by a further supply mechanism 14.4, 14.5 and 14.6 in the thread path.
• the partial thread 6.1 is passed through the supplying plants 14.1 and 14.4, the partial thread 6.2 through the supplying plants 14.2 and 14.5 and the partial thread 6.3 through the supplying plants 14.3 and 14.6.
• the delivery mechanisms 14.4, 14.5 and 14.6 are preferably also driven independently of one another by separate individual drives.
• the delivery mechanisms 14.4, 14.5 and 14.6 can preferably be controlled via a common control device.
• the individual drives of the delivery mechanisms 14.4, 14.5 and 14.6 could also be designed as a group drive.
• the drives of the delivery mechanisms 14.4, 14.5 and 14.6 are driven and controlled separately.
• a pretreatment agent 8 is provided between the spin agent 1 and the take-off agent 10.
• the pretreatment agent 8 is formed here by each of the preparation agents 7.1 to 7.3 assigned to the partial threads 6.1 to 6.2 and the downstream intermingling nozzles 9.1 to 9.3.
• Each of the partial threads 6.1 to 6.3 receives a preparation order independently of one another.
• the filaments of the partial threads are then swirled in the associated swirling nozzles 9.1 to 9.3. This essentially creates the thread closure for further treatment of the partial threads 6.1 to 6.3.
• the further treatment of the partial threads 6.1, 6.2 and 6.3 is carried out by a texturing agent 11 arranged downstream of the take-off means 10 and a post-treatment agent 12.
• the texturing agent 11 is formed by a delivery nozzle 15 and a stuffer box 16 which interacts with the delivery nozzle 15.
• the delivery nozzle 15 is connected to a pressure source through which a delivery medium is supplied to the delivery nozzle 15.
• the partial threads 6.1, 6.2 and 6.3 are drawn into the conveying nozzle 15 by the conveying medium and then upset in the stuffer box 16 to form a thread stopper. Partial blending of the partial threads 6.1 to 6.3 occurs here.
• the thread stopper which is preferably produced by a hot conveying medium, is then guided to a cooling device 17 and cooled.
• the aftertreatment agent 12 arranged downstream of the texturing agent 11 has a first take-off godet 18.1 arranged downstream of the cooling device 17.
• the take-off godet 18.1 is followed by a composite means 19, through which the partial threads 6.1 to 6.3 are finally mixed into a composite thread 21.
• the composite means 19 is also by a Swirl nozzle formed.
• the composite thread 21 is drawn off from the composite means 19 by a further take-off godet 18.2 and fed to the winding means 13. With the winding-up means 13, the composite thread 21 is wound up into a bobbin 20.
• each of the partial threads 6.1 to 6.3 could have a different color, a different additive admixture or different base polymers.
• the partial threads 6.1, 6.2 and 6.3 are separated from the spinnerets 3.1 by an individually set take-off speed through the respectively assigned delivery mechanisms 14.1, 14.2 and 14.3 , 3.2 and 3.3 subtracted and then stretched through the subordinate delivery plants 14.4, 14.5 and 14.6.
• drawing can be tailored to the partial threads 6.1, 6.2 and 6.3 in order to specifically and separately influence and adjust desired physical properties such as strength and elongation.
• the composite thread 21 produced by the method according to the invention is distinguished by a high uniformity in the physical properties. High-strength yarns can thus advantageously be produced. Depending on the wishes and requirements of the visual properties, several treatment stages can be carried out.
• FIG. 2 shows a further exemplary embodiment of a device according to the invention for carrying out the method according to the invention.
• the exemplary embodiment is essentially identical to the previous exemplary embodiment, so that reference is made to the preceding description and only the differences are explained at this point.
• the components with identical functions have been given identical reference symbols.
• the spin agent 1, the pretreatment agent 8, the take-off agent 10, the aftertreatment agent 12 and the rinsing agent 13 are identical to the previous example.
• the texturing means 11 is formed by separate conveying nozzles with associated stuffer boxes.
• the texturing agent 11 is thus composed of the delivery nozzles 15.1, 15.2 and 15.3 and the associated compression chambers 16.1, 16.2 and 16.3.
• the stuffer boxes 16.1, 16.2 and 16.3 are the cooling devices 17.1,
• Stuffer box 16.1 to 16.5 can be arranged in separate housings or in a common housing. Likewise, the cooling devices
• 17.1 and 17.2 and 17.3 are replaced by a unit on which three parallel thread plugs are guided. Essential to those shown in Fig. 2
• Embodiment is that the threads 6.1, 6.2 and 6.3 according to the individual
• Stretching can be textured separately.
• the trigger means shown in the exemplary embodiments according to FIGS. 1 and 2 are exemplary in their arrangement and in their structure. So they can be Combine the pulling means in the illustrated exemplary embodiments as desired in order to obtain a stretch adapted to the partial threads.
• FIG. 3 shows a further exemplary embodiment of a trigger means, as would be used, for example, in the device according to FIG. 1 or 2.
• thread 6.1 can be guided and stretched independently of thread 6.2 and 6.3.
• the partial threads 6.2 and 6.3 are guided and drawn together by the supplying plants 14.2 and 14.4.
• the delivery systems 14.1 to 14.4 are also driven by a
• a single drive is assigned to godets, which can be controlled independently of one another.
• FIGS. 4 shows a further exemplary embodiment of a trigger means, as would be used, for example, in the devices according to FIGS. 1 and 2.
• the partial thread 6.1 is drawn off by the delivery mechanism 14.1.
• the partial threads 6.2 and 6.3 are deducted together by the supplier 14.2.
• the further drawing of the partial threads 6.1, 6.2 and 6.3 is then carried out jointly by the delivery unit 14.3.
• the feed mechanisms 14.1 and 14.2 are operated at different circumferential speeds, so that the partial thread 6.1 is stretched differently from the other partial threads 6.2 and 6.3.
• the sub-threads 6.1, 6.2 and 6.3 are then fed together by the delivery mechanism 14.3 to the subsequent texturing.
• each of the partial threads 6.1 and 6.2 is treated, textured, aftertreated and wound up independently of one another after spinning.
• the Coil means 13 several winding positions 22.1 and 22.2.
• a partial thread 6.1 and 6.2 is wound into a bobbin 20.1 and 20.2.
• a pre-treatment agent 8, take-off agent 10, a texturing agent 11 and a post-treatment agent 12 are arranged between the spin agent 1 and the winding agent 13.
• Each agent preferably has identical treatment and furnishing means per thread 6.1 and 6.2.
• each of the treatment and furnishing means arranged in the thread path of the partial threads 6.1 to 6.2 can be controlled independently and separately in order to enable individual treatment of the partial threads 6.1 and 6.2.
• the partial threads 6.1 and 6.2 are wound with an identical winding speed to the bobbins 20.1 and 20.2.
• Each of the partial threads 6.1 in the thread run are a preparation 7, a swirl nozzle 9, a first delivery mechanism 14.1, a second delivery mechanism 14.2, a delivery nozzle 15 with a stuffer box 16, a cooling device 17, a first take-off godet 18.1, a swirl nozzle 9 and a second take-off godet 18.2 arranged.
• Such an arrangement is particularly suitable for producing different yarns within one spinning device. Individually set take-off speeds and draw ratios can be taken into account in particular when spinning the threads.
• the described exemplary embodiments for carrying out the method according to the invention are exemplary in their arrangement and their choice of treatment devices.
• further pretreatment or post-treatment stages and means can be introduced in order, for example, to be able to carry out additional treatments on the partial threads before texturing or after texturing or further treatments on the composite thread.
• the nature and design of the texturing agent is also exemplary.
• the part threads can also be textured with different parameters. With separate texturing there is also the possibility of different texturing methods apply.
• the separate setting of the drawing parameters on the partial thread provides a high degree of flexibility in the production of textured composite threads.
• the design of the delivery plants in the exemplary embodiments shown is also exemplary. All or part of the supplying plants could be formed by two driven godets each. Both godets of a delivery plant could be driven at the same peripheral speed or at a differential speed. In addition, one or both godets of a delivery plant could have heating means in order to be able to carry out a thermal treatment on the threads.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Textile Engineering (AREA)
• Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
• Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=31895542

Family Applications (1)

Country Status (6)

Families Citing this family (18)

Family Cites Families (12)

• 2002
  • 2002-08-10 DE DE10236826A patent/DE10236826A1/de not_active Withdrawn
• 2003
  • 2003-08-08 EP EP03792280A patent/EP1527220A1/de not_active Withdrawn
  • 2003-08-08 WO PCT/EP2003/008810 patent/WO2004018751A1/de active Application Filing
  • 2003-08-08 CN CNA038191229A patent/CN1675419A/zh active Pending
  • 2003-08-08 JP JP2004530109A patent/JP2005535795A/ja active Pending
• 2005
  • 2005-02-09 US US11/054,195 patent/US20050151295A1/en not_active Abandoned

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events