EP0341420B1 - Garn und Verfahren zur Herstellung des Garnes - Google Patents
Garn und Verfahren zur Herstellung des Garnes Download PDFInfo
- Publication number
- EP0341420B1 EP0341420B1 EP89106097A EP89106097A EP0341420B1 EP 0341420 B1 EP0341420 B1 EP 0341420B1 EP 89106097 A EP89106097 A EP 89106097A EP 89106097 A EP89106097 A EP 89106097A EP 0341420 B1 EP0341420 B1 EP 0341420B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- yarn
- granular particles
- component
- particles
- suspension
- 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.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims abstract description 50
- 239000002245 particle Substances 0.000 claims abstract description 122
- 238000009958 sewing Methods 0.000 claims abstract description 40
- 239000006185 dispersion Substances 0.000 claims abstract description 31
- 239000012530 fluid Substances 0.000 claims abstract description 27
- 239000000725 suspension Substances 0.000 claims abstract description 23
- 238000004519 manufacturing process Methods 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000003595 mist Substances 0.000 claims abstract description 10
- 239000000428 dust Substances 0.000 claims abstract description 7
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 10
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 8
- 238000002360 preparation method Methods 0.000 claims description 6
- 239000002270 dispersing agent Substances 0.000 claims description 5
- 239000004094 surface-active agent Substances 0.000 claims description 5
- 239000004408 titanium dioxide Substances 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000000454 talc Substances 0.000 claims description 2
- 229910052623 talc Inorganic materials 0.000 claims description 2
- 239000008187 granular material Substances 0.000 claims 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims 3
- 238000007598 dipping method Methods 0.000 claims 1
- 235000012239 silicon dioxide Nutrition 0.000 claims 1
- 239000000377 silicon dioxide Substances 0.000 claims 1
- 235000012222 talc Nutrition 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 10
- 239000000919 ceramic Substances 0.000 abstract description 6
- 239000011162 core material Substances 0.000 description 12
- 238000012545 processing Methods 0.000 description 9
- 238000009736 wetting Methods 0.000 description 8
- 238000009826 distribution Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000007900 aqueous suspension Substances 0.000 description 5
- 239000000375 suspending agent Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000007858 starting material Substances 0.000 description 4
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- 239000003795 chemical substances by application Substances 0.000 description 3
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- 238000007654 immersion Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 150000003961 organosilicon compounds Chemical class 0.000 description 2
- 150000003871 sulfonates Chemical class 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 150000008051 alkyl sulfates Chemical class 0.000 description 1
- 229940045714 alkyl sulfonate alkylating agent Drugs 0.000 description 1
- 150000008052 alkyl sulfonates Chemical class 0.000 description 1
- -1 alkylaryl sulfates Chemical class 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000010954 inorganic particle Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000011545 laboratory measurement Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 150000004028 organic sulfates Chemical class 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 150000003014 phosphoric acid esters Chemical class 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000012925 reference material Substances 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000010972 statistical evaluation Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
- D06M11/46—Oxides or hydroxides of elements of Groups 4 or 14 of the Periodic Table; Titanates; Zirconates; Stannates; Plumbates
-
- 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
- D02G1/16—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using jets or streams of turbulent gases, e.g. air, steam
- D02G1/164—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using jets or streams of turbulent gases, e.g. air, steam in the presence of a liquid, e.g. a crimp finish
-
- 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
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/44—Yarns or threads characterised by the purpose for which they are designed
- D02G3/46—Sewing-cottons or the like
Definitions
- the present invention relates to a yarn, in particular a sewing thread, with the features of the preamble of patent claim 1 and two methods for producing the yarn with the features of the preamble of patent claims 11 and 19.
- Swirled yarns which consist of at least two yarn components, one yarn component forming the core, which is also called the core, and the other yarn component forming the sheath, have long been known.
- such intermingled yarns are produced by feeding the core material with a certain advance, for example between about 1% and about 5%, together with the sheath material to a nozzle and swirling it there by an air stream, the sheath material generally being compared to the core material with a much higher lead in the nozzle.
- the air stream hitting the yarn causes the individual filaments of the soul and / or the sheath material, for example with the formation of loops, loops and.
- Swirled and confused so that the resulting finished yarn forms a closed yarn structure due to this swirling or confusion, without a twisting of the two components is necessary for this.
- swirled single yarns which do not have the core-sheath structure described above.
- the multifilament yarn consisting of individual filaments is fed to the nozzle with a certain advance. swirled over an air stream in such a way that the individual filaments are swirled or tangled with themselves, so that a yarn which is closed per se results.
- the mechanical-technological properties are then considerably deteriorated, which can be expressed, for example, in the case of a sewing thread in a reduced strength, a deterioration in the force-elongation ratio and / or in an increase in the frequency of thread breakage during sewing.
- the present invention has for its object to provide a yarn of the type specified, which has a particularly low frequency of yarn breakage during processing.
- the yarn designed according to the invention which is used in particular as a sewing thread, consists of at least one first yarn component designed as a core and at least one second yarn component intermingled with the first yarn component, the second yarn component being arranged predominantly in relation to the finished yarn in the outer region thereof.
- Grain-like particles are arranged in the spaces between the threads and / or on the outside of the thread.
- the grain-like particles have a grain diameter of between approximately 4 ⁇ m and approximately 400 ⁇ m. Your concentration is between about 0.02% by weight and about 20% by weight, each based on the weight of the yarn.
- the mechanical-technological properties and the processing behavior are considerably improved in comparison with a conventionally designed, equivalent yarn which does not have such granular particles.
- This is expressed, for example, in that the yarn strength is improved by approximately 15% compared to the standard yarn described above, while at the same time the elasticity is improved in the yarn according to the invention.
- the thread break frequency of a conventional yarn with the same structure compared to the yarn according to the invention by a factor of between is about 3 and about 8 higher.
- the yarn according to the invention also has a higher interlacing in comparison to a conventional yarn produced under otherwise the same conditions, to which the property improvements previously mentioned are also attributed.
- these particles can contribute to the electrostatic charge reduce synthetic yarns, which in turn improves the processing properties of the yarn according to the invention.
- EP 0 136 727 A discloses a yarn which is used as a filler or sealing material.
- the known yarn which is a single multifilament yarn, has a filament number between 1,000 and 20,000 filaments.
- EP 0 136 727 A suggests swirling the only multifilament starting material, the multifilament starting material being wetted with an aqueous dispersion of granular particles before the swirling.
- the grain-like particles used for this have a grain size that varies predominantly between 0.1 ⁇ m and 1 ⁇ m.
- the known yarn thus differs from the previously described inventive yarn not only in its construction but also decisively in the number of filaments and the size of the grain-like particles.
- a particularly suitable embodiment of the yarn according to the invention has granular particles in a concentration between about 0.2% by weight and about 0.4% by weight.
- a very fine titer i.e. for yarns in a titer range between about 100 dtex and about 300 dtex
- the aforementioned concentration range of granular particles is sufficient to achieve the desired improvement in processing properties, the increase in strength and the increase in elongation behavior. This is particularly true if the grain-like particles are predominantly or exclusively arranged on the surface of the finished yarn and if the diameter of the particles is approximately in a range between 10 ⁇ m and approximately 100 ⁇ m.
- titers i.e.
- Titers in the range between approximately 500 dtex and approximately 800 dtex may require higher concentrations of granular particles, these concentrations usually being in a range between approximately 0.5% by weight and approximately 4% by weight.
- concentrations in the order of magnitude between approximately 5% by weight and approximately 15% by weight may be required in order to achieve the above-mentioned favorable properties, with all of the above-mentioned yarns, the particle concentration for the respective yarn depends on the number of filaments, the distribution of the particles over the yarn cross-section and the particle diameter.
- Such embodiments have particularly good mechanical properties and advantageous processing behavior of the yarn according to the invention, in which the grain-like particles have a grain diameter of between approximately 20 ⁇ m and approximately 100 ⁇ m.
- Such relatively small particles are particularly effective in reducing the friction described above and also have good adhesion to the yarn, so that no unwanted dusting occurs when the yarn is processed.
- both the embodiment of the yarn according to the invention, in which the particles are predominantly or exclusively arranged in the outer region of the yarn, and those embodiments in which the particles are evenly distributed over the yarn cross section are claimed .
- the last-mentioned embodiments are suitable for yarns which have a relatively high number of filaments, i.e. between about 80 filaments and about 200 filaments, have a relatively fine titer, for example between about 100 dtex and about 300 dtex.
- the desired improvement in properties depends crucially on the fact that the friction between the filaments is effectively reduced, which is achieved by embedding the particles in the spaces between the filaments.
- Another advantageous embodiment of the yarn according to the invention provides that the grain-like particles are embedded in a finish applied to the yarn.
- the finish supports the effect of the grain-like particles in reducing friction, while the finish improves the adhesion of the grain-like particles to the yarn or to the individual filaments processed therein.
- the avivage affects The mobility of the particles relative to the individual filaments or the yarn is only slight, so that the previously described positive properties of the particles are additionally reinforced in such an embodiment of the yarn according to the invention.
- the same statements apply as were made above for the distribution of the particles.
- the yarn according to the invention has a core-sheath structure, the core (core) made of a multifilament yarn, for example one with a titer between approximately 100 dtex and approximately 500 dtex, in particular with a titer between approximately 150 dtex and approximately 300 dtex.
- the number of filaments of such a core material can vary between approximately 50 threads and approximately 500 threads, in particular between approximately 100 threads and approximately 300 threads, depending on the particular field of use of the yarn.
- the core sheath yarn described above has one or more multifilament yarns, the titer and number of filaments of which correspond to approximately half the titer and the number of filaments of the core material.
- grain-like particles there are basically those particles that have a certain hardness and resistance exhibit mechanical loads.
- Inorganic particles such as talc, kieselguhr and aluminum oxide are particularly suitable.
- One embodiment of the yarn according to the invention which contains titanium dioxide and / or barium sulfate particles, has particularly good mechanical properties and excellent processing behavior, since these substances have excellent resistance to mechanical stress.
- the yarn according to the invention can be processed wherever a high mechanical load on the yarn occurs during processing and / or high strength and excellent elastic behavior of the yarn is required.
- the use of the yarn according to the invention as a sewing thread brings considerable advantages compared to a suitably designed conventional thread, as will be demonstrated below by the exemplary embodiments.
- Such a sewing thread preferably has the core / sheath structure described above.
- the yarn according to the invention can also have a twist, for example in the range between 1 twist / m and approximately 1000 twists / m, preferably between approximately 100 twists / m and approximately 600 twists / m.
- a twist for example in the range between 1 twist / m and approximately 1000 twists / m, preferably between approximately 100 twists / m and approximately 600 twists / m.
- Such a twisted embodiment is particularly suitable for those uses in which the yarn is exposed to extremely high mechanical loads, as is the case, for example, with yarns used in large-scale manufacturing.
- the rotation also improves the yarn composite, while the particles preferably arranged on the outside of such a twisted yarn considerably reduce the friction occurring during processing, so that the yarn breakage frequency is significantly reduced.
- the present invention is also based on the object of providing a method of the type specified, with which the yarns described above can be produced with special consideration of a uniform yarn titer.
- this object is achieved by a method having the characterizing features of patent claim 11 and by a method having the characterizing features of patent claim 19.
- the first, basic variant of the method according to the invention is based on the basic idea that grain-like particles are added to the water with which the first yarn component is wetted before intermingling, the grain-like particles used here having a specific weight greater than 1 g / cm 3 and one Grain diameter between about 4 microns and about 400 microns, in particular between about 20 microns and about 100 microns.
- this then leads to a turbulent fluid flow acting on the yarn in the nozzle, and there specifically in the swirl chamber, which, in addition to the fluid fed to the nozzle in each case, for example air or steam, has a turbulent particle flow from the defined large one contains grain-like particles, which increases the degree of intermingling of the individual filaments and causes the grain-like particles to be deposited in or on the thread, so that a sewing thread produced in this way has the advantages as described above for the thread according to the invention.
- the process according to the invention has a number of further advantages.
- the core-jacket yarns produced by this process are characterized by a particularly uniform titer, which is attributed to the fact that the flow conditions in the nozzle are optimized and / or by the additional particle flow in the swirl chamber be evened out.
- the particle flow causes any matting of the first yarn component to be loosened, which in turn improves the yarn uniformity.
- the particle flow also prevents the deposit of loosened or lubricated preparations and additives in the nozzle, so that undesired and uncontrollable changes in the dimension of the nozzle due to deposits or lubrication do not occur in the process according to the invention during production, so that on the one hand the flow conditions in the nozzle can also be kept constant over a longer production period and on the other hand undesirable Knot formation and / or capillary or yarn breaks can be prevented.
- This has the effect that the yarns described above can be produced over a longer period of time without interruption and without the need to clean the nozzle, so that in the method according to the invention there is no significant downtime for cleaning the nozzle and / or reinserting it Yarns occur when yarn breaks occur.
- the method according to the invention thus permits the economical production of improved core-sheath yarns, this being evident preferably in improved mechanical-technological properties and in a higher mechanical strength of the yarns during processing.
- Grain-like particles whose specific weight is between approximately 1 g / cm 3 and approximately 6 g / cm 3, in particular between approximately 2 g / cm 3 and approximately 4.5 g / cm 3, are preferably used in the process according to the invention, it being particularly advantageous has proven to vary the specific weight of the granular particles depending on the yarn to be processed.
- the hardness of the particle particles used is also important for the desired effects.
- the granular particles should not be so soft that they are destroyed during the swirling and on the other hand they should still have a certain softness in order not to cause undesired capillary injuries and / or undesirable damage to the nozzle.
- Grain-like particles are usually used which have a hardness on the Mohs hardness scale of between approximately 1 and approximately 7, in particular between approximately 4 and approximately 6 1/2, but also the hardness, as already explained above for the density of the grain-like particles, depends on the yarn used and its number of filaments.
- the grain size of the particles used can also vary in a range between approximately 4 ⁇ m and approximately 400 ⁇ m, in particular for the production of yarns with an average titer between approximately 300 dtex and approximately 600 dtex Grain diameters between about 20 microns and about 100 microns can be used.
- the finer titers of the individual filaments and / or the finished yarn particles with a grain size of between approximately 20 ⁇ m and approximately 50 ⁇ m are preferred, and in the case of the coarser titers of the individual filaments or of the finished yarn preferably also larger grain-like particles, for example, those in a range between approximately 150 ⁇ m and approximately 250 ⁇ m can be used.
- the concentration of the granular particles in the aqueous suspension or dispersion depends on the type of wetting of the first yarn component. If the first yarn component is wetted by immersion in an aqueous suspension or dispersion of the granular particles, the concentration is usually in a range between approximately 45 g granular particles / l and approximately 150 g particles / l, preferably a concentration range between approximately 30 g Particle / l and about 60 g particle / l is selected.
- particle concentrations between about 10 g / l and about 200 g / l, preferably between about 50 g / l and about 150 g / l, are preferably used .
- surfactants and / or dispersing agents or suspending agents are added to the aqueous suspension or dispersion of the granular particles.
- the surfactants or dispersing and suspending agents known per se from textile chemistry can be used here, preference being given to using low-foaming products and / or the known antifoaming agents, for example based on organosilicon compounds.
- anionic surfactants or dispersing and / or suspending agents based on organic sulfates and sulfonates for example alkyl sulfates, alkyl sulfonates and / or alkylaryl sulfates or sulfonates, the concentration of the above products preferably being in a range between 1 g / l and about 4 g / l.
- the dispersion or suspension is constantly moved. This can be done, for example, by stirring the dispersion or suspension or by irradiating it with ultrasound waves.
- a particularly good distribution and a stable dispersion or suspension are obtained by generating a turbulent flow in the dispersion or suspension, which can be achieved very well, for example, by blowing in air.
- the yarn components are usually intermingled at a fluid pressure between approximately 6 bar and approximately 15 bar, preferably between approximately 8 bar and approximately 10 bar. Either steam or air can be used as the fluid, the latter leading to particularly good results.
- a fluid pressure between approximately 6 bar and approximately 15 bar, preferably between approximately 8 bar and approximately 10 bar.
- Either steam or air can be used as the fluid, the latter leading to particularly good results.
- the yarn components of the starting material are fed to a nozzle and there through the turbulent fluid flow swirls, the fluid flow additionally having, for example, air and / or steam, also granular particles.
- the fluid flow that is fed to the nozzle is either a mist consisting of finely divided water droplets with a diameter between approximately 40 ⁇ m and approximately 600 ⁇ m with granular particles dispersed or suspended therein, and / or one Dust of the granular particles alone is added, the granular particles having a grain size between approximately 4 ⁇ m and approximately 400 ⁇ m and in particular between 20 ⁇ m and 100 ⁇ m.
- the granular particles are not supplied directly by the first yarn component, but rather by the fluid flows supplied to the nozzle, which leads to a further intensification of the intermingling of the yarns.
- the first yarn component is wetted with the particle-containing dispersion or suspension
- the particles adhering to the yarn during the air or steam flow during the relatively short stay of the yarn in the nozzle does not have to be accelerated there, but instead granular particles are already supplied to the nozzle as accelerated particles.
- the fluid flow is supplied with a mist which is produced from an aqueous dispersion or suspension of the granular particles, the concentration of the granular particles preferably being between approximately 30 g / l and approximately 300 g / l between about 60 g / l and about 200 g / l.
- concentration of the granular particles preferably being between approximately 30 g / l and approximately 300 g / l between about 60 g / l and about 200 g / l.
- the supply of a mist in which the particles are dispersed or suspended has the advantage that the mechanical stress on the yarn and the nozzle is reduced by the lubricating or sliding action caused by the water is, so that the supply of a dust to the fluid flow is preferably used when using particularly soft particles, when using special nozzles, which will be described below, and / or with relatively coarse-titer yarns.
- the fluid flow between about 0.1 m3 / h and about 5 m3 / h, in particular between about 0.5 m3 / h and about 2 m3 / h, fog or dust of the composition described above, with such Processes of fluid flow (air or steam) in a range between about 4 m3 / h and about 15 m3 / h, preferably between about 5 m3 / h and about 8 m3 / h.
- surfactants if a mist in which the granular particles are suspended or dispersed is fed to the fluid flow, it is also possible to add surfactants and / or To use dispersing or suspending agents, the surfactants or dispersing or. Suspension agents preferably have the chemical structure described above.
- the nozzle used to carry out the method according to the invention has at least a first inlet opening for the yarn, a second inlet opening for the fluid flow, an outlet opening for the swirled yarn and a swirl chamber, at least the inner walls of the swirl chamber and the inner walls of the outlet opening being made of ceramic .
- ceramic in particular not only has the required hardness and resistance to the particle flow impinging in the swirl chamber and the outlet opening, but at the same time brings about a constant flow profile in the nozzle due to its closed surface, which leads to a particularly reproducible yarn.
- the aqueous dispersion or suspension of the granular particles can be applied by spraying the thread with the dispersion or suspension or by immersing the thread in the dispersion or suspension.
- a special wetting device for applying the aqueous dispersion or suspension, through which the yarn is passed.
- this wetting device has a wetting head which can be brought into contact with the yarn and via which the dispersion or suspension of the granular particles is applied to the yarn in a kind of popping technique.
- Such wetting devices are known and are widely used and are offered, for example, by the Heberlein company under the system name "HEMA-WET-DÜSE".
- a yarn denoted overall by 1 which consists of a plurality of individual capillaries 2 which are intermingled.
- the individual capillaries are either swirled together in a knot-like manner, as can be seen at the point denoted by 3.
- the yarn also has protruding loops 4 and confused areas 5.
- Grain-like particles 6 are arranged in the spaces between the individual capillaries 2 and are freely movable in a certain area relative to the individual capillaries.
- Particles 7 adhere to the outside of the yarn and, like the particles 6, can be moved within a certain range relative to the individual capillaries 2 or to the yarn 1 as a whole.
- the particles 6 and 7 shown in the figure are titanium dioxide particles with a grain size of 60 ⁇ m. Their concentration is 0.2% by weight, based on the weight of the yarn.
- a sewing thread with a titer of 285 dtex is produced by interlacing a first thread component serving as a soul, which was a polyester multifilament thread with a titer of 180 dtex and an elementary thread count of 40 filaments.
- the first yarn component was interlaced with a second component (effect or sheath component), the titer of the second yarn component being 50 dtex with a number of filaments of 24 filaments.
- a conventionally designed, commercially available nozzle was used as the nozzle, which bore the type designation T341 and is offered by the Heberlein company.
- Air was fed to the nozzle as a fluid stream at a pressure of 10.5 bar, the air throughput being 8 m 3 / h. After intermingling, the yarn was drawn off at a speed of 500 m / min.
- the first thread component of the sewing thread was wetted before immersion by immersing it in water, the immersion distance being about 2 cm.
- the conventionally produced and designated sewing thread No. 1 was dyed and finished according to the known methods and served as a reference material for the subsequent mechanical-technological measurements and for industrial sewing tests.
- a No. 2 sewing thread was prepared under the conditions described above, the No. 2 sewing thread being treated with an aqueous suspension of 30 g / l barium sulfate before intermingling.
- the barium sulfate had a particle size of 80 ⁇ m. Otherwise, the manufacturing conditions corresponded to embodiment 1.
- a sewing thread Mr. 3 was produced in accordance with working example 1, however, in deviation from this, the first yarn component was wetted with a dispersion of 60 g / l titanium dioxide with a particle size of 20 ⁇ m prior to intermingling.
- a sewing thread No. 4 was produced under the conditions described in exemplary embodiment 1, but in deviation from this the first thread component was not wetted with water before the intermingling. Instead, 15% by volume of a mist, which was prepared from an aqueous dispersion of 100 g / l barium sulfate, was added to the air stream.
- the sewing threads 1 to 4 described above were first examined microscopically. It was found that the degree of interlacing of the sewing threads increased steadily from sewing thread No. 1 to sewing thread No. 4.
- the frequency of yarn breakage when rubbing sewing thread against sewing thread was determined on a specially developed measuring device.
- one end of the sewing thread was clamped in a clamp, then the sewing thread was placed in a loop, the loop over movable rollers was kept open and then the yarn was moved under a load of 50 g in such a way that a point-like abrasion of yarn on yarn occurred at the loop.
- the scouring tests were carried out until the yarn broke, the number of movement cycles until the break being measured.
- the conventionally produced sewing thread 1 broke after 200 movement cycles. Sewing thread 2 broke at 450 movement cycles, while 3,600 movement cycles were required for sewing thread and 4,750 movement cycles for sewing thread were required to break.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3816318 | 1988-05-13 | ||
| DE3816318A DE3816318C1 (enExample) | 1988-05-13 | 1988-05-13 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0341420A2 EP0341420A2 (de) | 1989-11-15 |
| EP0341420A3 EP0341420A3 (en) | 1990-12-27 |
| EP0341420B1 true EP0341420B1 (de) | 1994-06-01 |
Family
ID=6354287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP89106097A Expired - Lifetime EP0341420B1 (de) | 1988-05-13 | 1989-04-07 | Garn und Verfahren zur Herstellung des Garnes |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0341420B1 (enExample) |
| AT (1) | ATE106463T1 (enExample) |
| DE (2) | DE3816318C1 (enExample) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013100613A1 (de) * | 2013-01-22 | 2014-07-24 | Boockmann Gmbh | Textiler Materialstrang sowie Verfahren zu seiner Herstellung |
| CN119246404B (zh) * | 2024-08-27 | 2025-08-26 | 中国海洋大学 | 超高频高速pcb用低介电玻璃纤维脱粉性能测试装置及测试方法 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1373388A (en) * | 1970-12-24 | 1974-11-13 | Teijin Ltd | Thermoplastic polymer fibres |
| DE2140517A1 (de) * | 1971-08-12 | 1973-04-12 | Zwirnerei & Naehfadenfab | Naehfaden |
| US3823449A (en) * | 1971-12-27 | 1974-07-16 | Akzona Inc | Apparatus for interlacing yarns |
| DE3048650C2 (de) * | 1980-12-23 | 1987-01-22 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., 8000 München | Verfahren zur Präparation von Nähgarnen aus Synthesefasern |
| DE3202555A1 (de) * | 1982-01-27 | 1983-08-04 | Juan San Cristobal s/n Artes Barcelona Vilanova Grau | Verfahren zum herstellen von strahlungsundurchlaessigem fadenmaterial |
| DE3341995A1 (de) * | 1982-11-24 | 1984-05-24 | Hasso von 4000 Düsseldorf Blücher | Garn mit spezifischen eigenschaften |
| ATE28909T1 (de) * | 1983-07-04 | 1987-08-15 | Akzo Nv | Mit schmierenden partikeln impraegniertes aromatisches polyamidgarn, verfahren zur herstellung dieses garnes und dasselbe enthaltendes dichtungsmaterial oder seil. |
| DE3712863A1 (de) * | 1986-04-16 | 1987-11-26 | Ackermann Goeggingen Ag | Naehfaden |
| DE3720237A1 (de) * | 1987-06-15 | 1989-01-05 | Amann & Soehne | Verfahren zum herstellen von luftblastexturiertem naehgarn |
-
1988
- 1988-05-13 DE DE3816318A patent/DE3816318C1/de not_active Expired
-
1989
- 1989-04-07 EP EP89106097A patent/EP0341420B1/de not_active Expired - Lifetime
- 1989-04-07 DE DE58907737T patent/DE58907737D1/de not_active Expired - Fee Related
- 1989-04-07 AT AT89106097T patent/ATE106463T1/de not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| ATE106463T1 (de) | 1994-06-15 |
| DE58907737D1 (de) | 1994-07-07 |
| EP0341420A3 (en) | 1990-12-27 |
| DE3816318C1 (enExample) | 1989-11-30 |
| EP0341420A2 (de) | 1989-11-15 |
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