EP0756026B1 - Verfahren zur Herstellung von teilbaren Elastangarnen - Google Patents
Verfahren zur Herstellung von teilbaren Elastangarnen Download PDFInfo
- Publication number
- EP0756026B1 EP0756026B1 EP96111361A EP96111361A EP0756026B1 EP 0756026 B1 EP0756026 B1 EP 0756026B1 EP 96111361 A EP96111361 A EP 96111361A EP 96111361 A EP96111361 A EP 96111361A EP 0756026 B1 EP0756026 B1 EP 0756026B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- spinning
- elastane
- thread guide
- multifilament
- yarns
- 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 description 34
- 238000004519 manufacturing process Methods 0.000 title claims description 18
- 238000009987 spinning Methods 0.000 claims description 40
- 229920002334 Spandex Polymers 0.000 claims description 34
- 238000000578 dry spinning Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 2
- 150000002009 diols Chemical class 0.000 description 13
- 239000007789 gas Substances 0.000 description 12
- 229920002635 polyurethane Polymers 0.000 description 12
- 239000004814 polyurethane Substances 0.000 description 12
- 238000012545 processing Methods 0.000 description 11
- 229920000728 polyester Polymers 0.000 description 10
- 239000004721 Polyphenylene oxide Substances 0.000 description 9
- 239000000835 fiber Substances 0.000 description 9
- 239000000203 mixture Substances 0.000 description 9
- 229920000570 polyether Polymers 0.000 description 9
- -1 aliphatic diamines Chemical class 0.000 description 8
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 7
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 6
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 6
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- 229920002396 Polyurea Polymers 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 6
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 description 6
- 229920000642 polymer Polymers 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000004804 winding Methods 0.000 description 5
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 4
- 239000013065 commercial product Substances 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 238000003786 synthesis reaction Methods 0.000 description 4
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 description 3
- MHABMANUFPZXEB-UHFFFAOYSA-N O-demethyl-aloesaponarin I Natural products O=C1C2=CC=CC(O)=C2C(=O)C2=C1C=C(O)C(C(O)=O)=C2C MHABMANUFPZXEB-UHFFFAOYSA-N 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 150000004985 diamines Chemical class 0.000 description 3
- HPNMFZURTQLUMO-UHFFFAOYSA-N diethylamine Chemical compound CCNCC HPNMFZURTQLUMO-UHFFFAOYSA-N 0.000 description 3
- 125000005442 diisocyanate group Chemical group 0.000 description 3
- 239000004205 dimethyl polysiloxane Substances 0.000 description 3
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 3
- 238000009940 knitting Methods 0.000 description 3
- 235000019359 magnesium stearate Nutrition 0.000 description 3
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000004408 titanium dioxide Substances 0.000 description 3
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- JQVDAXLFBXTEQA-UHFFFAOYSA-N dibutylamine Chemical compound CCCCNCCCC JQVDAXLFBXTEQA-UHFFFAOYSA-N 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 210000000056 organ Anatomy 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000002798 polar solvent Substances 0.000 description 2
- KIDHWZJUCRJVML-UHFFFAOYSA-N putrescine Chemical compound NCCCCN KIDHWZJUCRJVML-UHFFFAOYSA-N 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- 239000000080 wetting agent Substances 0.000 description 2
- XYXJKPCGSGVSBO-UHFFFAOYSA-N 1,3,5-tris[(4-tert-butyl-3-hydroxy-2,6-dimethylphenyl)methyl]-1,3,5-triazinane-2,4,6-trione Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C)=C1CN1C(=O)N(CC=2C(=C(O)C(=CC=2C)C(C)(C)C)C)C(=O)N(CC=2C(=C(O)C(=CC=2C)C(C)(C)C)C)C1=O XYXJKPCGSGVSBO-UHFFFAOYSA-N 0.000 description 1
- RNLHGQLZWXBQNY-UHFFFAOYSA-N 3-(aminomethyl)-3,5,5-trimethylcyclohexan-1-amine Chemical compound CC1(C)CC(N)CC(C)(CN)C1 RNLHGQLZWXBQNY-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 229920001730 Moisture cure polyurethane Polymers 0.000 description 1
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 1
- 239000006057 Non-nutritive feed additive Substances 0.000 description 1
- KXBFLNPZHXDQLV-UHFFFAOYSA-N [cyclohexyl(diisocyanato)methyl]cyclohexane Chemical compound C1CCCCC1C(N=C=O)(N=C=O)C1CCCCC1 KXBFLNPZHXDQLV-UHFFFAOYSA-N 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- IRERQBUNZFJFGC-UHFFFAOYSA-L azure blue Chemical compound [Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[S-]S[S-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-] IRERQBUNZFJFGC-UHFFFAOYSA-L 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical class [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000004581 coalescence Methods 0.000 description 1
- GEQHKFFSPGPGLN-UHFFFAOYSA-N cyclohexane-1,3-diamine Chemical compound NC1CCCC(N)C1 GEQHKFFSPGPGLN-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- ACCCMOQWYVYDOT-UHFFFAOYSA-N hexane-1,1-diol Chemical compound CCCCCC(O)O ACCCMOQWYVYDOT-UHFFFAOYSA-N 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000004611 light stabiliser Substances 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- SYSQUGFVNFXIIT-UHFFFAOYSA-N n-[4-(1,3-benzoxazol-2-yl)phenyl]-4-nitrobenzenesulfonamide Chemical class C1=CC([N+](=O)[O-])=CC=C1S(=O)(=O)NC1=CC=C(C=2OC3=CC=CC=C3N=2)C=C1 SYSQUGFVNFXIIT-UHFFFAOYSA-N 0.000 description 1
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920006294 polydialkylsiloxane Polymers 0.000 description 1
- 238000012667 polymer degradation Methods 0.000 description 1
- 229920000909 polytetrahydrofuran Polymers 0.000 description 1
- 229920003225 polyurethane elastomer Polymers 0.000 description 1
- 229920003226 polyurethane urea Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000004759 spandex Substances 0.000 description 1
- 125000001302 tertiary amino group Chemical group 0.000 description 1
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 1
- 235000013799 ultramarine blue Nutrition 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N urea group Chemical group NC(=O)N XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000002166 wet spinning Methods 0.000 description 1
- 238000004383 yellowing Methods 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
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
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
- D02G3/32—Elastic yarns or threads ; Production of plied or cored yarns, one of which is elastic
- D02G3/328—Elastic yarns or threads ; Production of plied or cored yarns, one of which is elastic containing elastane
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
- D01F6/70—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyurethanes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2913—Rod, strand, filament or fiber
Definitions
- the invention relates to a production method for divisible elastane multifilament yarns, which is carried out so that a coalescence of the yarn forming Single filaments caused by fusing, gluing or mechanical Whirling or twisting is prevented.
- the available from the process Single filaments can be removed from the multifilament spool divided and processed separately in textile production processes become.
- a generic method is for example known from DE-A-3 534 311.
- Elastane fibers are fibers made up of at least 85% by weight segmented polyurethanes exist. Reach your typical property profile these fibers through the use of polyurethane polyureas from oligomers Polyester or polyether diols, aromatic diisocyanates and short-chain aliphatic diamines.
- the thread is usually formed by spinning of solutions of the polyurethanes after the wet spinning or preferably after the dry spinning process, using polar solvents in both cases Solvents such as dimethyl sulfoxide, N-methylpyrrolidone, dimethylformamide or preferably dimethylacetamide are suitable.
- elastane yarns have been known for a long time. They serve because of their elastic properties for the production of functionalized textile products, i.e. Articles with a combination of elasticity and reset or Forming force. To do this, the elastane filament yarn is combined with other inelastic yarns refined to combination yarns, e.g. by winding, spinning or Swirling, or it will go straight through with the inelastic yarn Mesh formation to the flat structure processed, e.g. by knitting or knitting.
- the elastane yarns must be practically free of fluff, thin spots and defects.
- the state of the Technology teaches that the spandex yarns are coalesced multifilament yarns be generated. This means that the individual filaments forming the total yarn during their spinning, e.g. in the dry spinning process, with each other are virtually glued.
- a method of making coalesced Elastane yarn is e.g. in US 3 094 374 and European Patent application 182 615. in the former scripture Advantages of a multifilament with high interfilamentary adhesion in relation to Secure processing is expressly described and methods for setting this Property profile disclosed.
- JP 03-059 112 are bundled polyurethane multifilaments or monofilaments described in an aligned manner are wound on a spool, the bundled multi or monofilaments have a separation voltage of 15 mg or less when detached from the coil. They are called separate multifilaments or monofilaments at one speed processed of at least 150 m / min. These products are obtained by the filaments coming from the dry spinning apparatus are cooled to below Subject to 60 ° C and adds a metal soap to the product. For the procedure According to JP 03-059 112, it does not matter whether multi or monofilaments are separated become.
- the object of the invention is the production of multifilament yarns which Processing from the bobbin into its individual filaments are divisible. These are not allowed twisted together, swirled or glued to one another at certain points or longitudinally his. It is important to find such rare, i.e. at hundreds of intervals To completely prevent the effects that occur.
- the invention relates to a manufacturing process for the production of so-called divisible splicable elastane multifilament yarns made from known polyurethane polyureas by spinning a spinning solution using the dry spinning method using a Dry spinning apparatus with one or more multi-hole spinnerets, Laminarization of the gas flow in the dry spinning apparatus to prevent the Swirling the individual filaments from the multi-hole nozzle and from neighboring ones Multi-hole nozzles, guide the elastane yarns formed after leaving the Spinning shaft through thread guide elements and winding of the multifilament, thereby characterized in that one or more multi-hole spinnerets are used, the Single holes are on a plate, the distance x of the holes from each other on a nozzle plate and their distance y to holes neighboring multi-hole spinneret plates of the relationship: 40 mm ⁇ x ⁇ y ⁇ 500 mm obeyed, and that the elastane yarns formed after leaving the spinning shaft through a first thread guide element with
- the polyurea polyurethanes are produced by methods known per se.
- the synthetic structure of the fiber raw materials after the Prepolymer process wherein in a first step a long-chain diol in Solvent or in the melt with a diisocyanate to form a prepolymer implemented that the reaction product isocyanate end groups (NCO groups) contains.
- Polyester diols on the one hand and polyether diols on the other hand are preferred as long-chain diols. Mixtures of both types of diol are also suitable. Have this generally a number average molecular weight of 1000-6000.
- polyester diols e.g. Dicarboxylic acid polyester suitable, both several can contain different alcohols as well as different carboxylic acids.
- Mixed polyesters of adipic acid, hexanediol and neopentyl glycol are particularly suitable in a molar ratio of 1: 0.7: 0.43.
- Suitable polyesters have a molecular weight from 1000 to 4000.
- polyether diols are, for. B. polytetramethylene oxide diols, preferably with a molecular weight of 1000 - 2000 (unless specifically mentioned, understand all molecular weights are number average).
- Polyester and / or polyether diols can also be used in combination with diols contain tertiary amino groups, are used.
- tertiary amino groups are used.
- aromatic diisocyanates are used in the synthesis of elastane raw materials optionally in a mixture with small amounts of aliphatic and / or cycloaliphatic diisocyanates used. Particularly useful Results are obtained with the diisocyanates mentioned below: 2,4-tolylene diisocyanate and corresponding mixtures of isomers, and also 4,4'-diphenylmethane diisocyanate (MDI) or corresponding isomer mixtures. Of course it is possible to mix aromatic diisocyanates use.
- MDI 4,4'-diphenylmethane diisocyanate
- Another embodiment of the synthesis of elastane raw materials is Mix polyester and polyether polyurethane prepolymer and then in implement known manner to polyurea polyurethanes. That for the respective technical purpose favorable mixture ratio of polyester and Polyether diols can be easily determined by preliminary tests.
- the urea groups are introduced into the macromolecules by a so-called chain extension reaction.
- the prepolymers ("macrodiisocyanates") containing NCO end groups synthesized in the prepolymer stage are usually reacted in solution with diamines.
- Suitable diamines are, for example, ethylenediamine, tetramethylene diamine, 1,3-cyclohexanediamine, isophoronediamine and mixtures of these diamines.
- monoamines for example diethylamine or dibutylamine
- the chain extension itself can be carried out discontinuously or continuously, and optionally using CO 2 as a retardant.
- a mixture of polyester and polyether polyurethane ureas can also be generated after completion of the synthesis of the individual components.
- the reactions are usually carried out in an inert polar solvent, such as Dimethylformamide or dimethylacetamide.
- the polymer solution intended for spinning can be a number of more common Additives are mixed in, e.g. Antioxidants and light stabilizers against polymer degradation or discoloration, further stabilizers against nitrogen oxide yellowing, Pigments, e.g. Titanium dioxide or ultramarine blue, dyes, processing aids such as lubricants and non-stick agents based on (earth) alkali stearates, internal release agents based on polydialkylsiloxanes and / or polyetherpolysiloxanes, as well as additives against chlorine water degradation, e.g. Zinc oxide.
- Antioxidants and light stabilizers against polymer degradation or discoloration further stabilizers against nitrogen oxide yellowing
- Pigments e.g. Titanium dioxide or ultramarine blue
- dyes e.g. Titanium dioxide or ultramarine blue
- processing aids such as lubricants and non-stick agents based on (earth) alkali stearates
- internal release agents based on polydial
- DE 35 34 311 C2 describes a spinning head for the production of elastomer threads from spinnerets with one or more holes, supply lines for the spinning liquid material, a lead gas distribution and distribution and a process in particular a dry spinning process for the production of elastomer threads from a spinning solution.
- a spinning head made of spinnerets with a or several bores, supply lines for the material to be spun, one Spinning gas supply and distribution, which is characterized in that the Spinning gas supply consists of a central gas pipe and the spinning gas distribution from a cylindrical chamber into which the gas pipe opens, the Diameter is at least three times the diameter of the central one Gas pipe, the height of which is a maximum of 25% of the chamber diameter, one has gas permeable soil with a free area of 2 to 15% and in a baffle plate system is attached below the central gas pipe from several horizontally and concentrically spaced, overlapping circular rings with a diameter and a circular plate consists.
- divisible elastane multifilament yarns are with two to six individual filaments and a total titer of 15 to 120 dtex accessible.
- a preferred embodiment of the method according to the invention supplies elastane multifilament yarns with a total of 20 to 50 dtex with two individual filaments.
- the elastane multifilament yarn wound on a spool can be found in such Use processing techniques in which a single elastane filament is applied if you put the multifilament yarn in before or during processing Separates individual filaments.
- processing techniques are e.g. circular knitting or the production of combination yarn with one soul Elastane yarn and a wrapped, wrapped or wrapped cover non-elastic yarn, e.g. Nylon or cotton.
- the separation of the invention Elastane multifilament yarns in single filaments are made between the elastane supply plant and the wrapping, blowing or winding.
- the Division takes place by simply inserting the separate individual filaments into it respective processing organ and start of the processing process. One can if necessary by attaching pins or thorns before the Processing organ further support the separation process.
- the elastane multifilament yarns according to the invention show high uniformity and excellent processing behavior and are no different from conventionally produced elastane yarn spun directly to the final titer.
- the Divisibility also allows a single filament number from a spinning station corresponding multiple of elastane yarn of a certain single filament titer generate, thereby increasing the economics of the manufacturing process, in particular the space-time yield is significantly increased. In other words, means this is that with this manufacturing process in the unit of time a multiple Fine titer elastane yarn is obtained than when using a conventional, directly to the final titer of the spinning process.
- the elastane fiber polymer is obtained from one Polytetramethylene ether- ⁇ , ⁇ -diol of number average molecular weight 2000, e.g. Terathane 2000, commercial product from DuPont de Nemours, which contains methylene bis (4-phenyl isocyanate) (MDI, commercial product Desmodur 44 from Bayer AG) for NCO prepolymer capped and with a mixture of ethylenediamine (EDA) and Diethylamine (DEA) is extended to the polymer chain.
- MDI methylene bis (4-phenyl isocyanate)
- EDA ethylenediamine
- DEA Diethylamine
- polyether diol of molecular weight 2000 530 parts by weight of polyether diol of molecular weight 2000 are with 359 parts by weight. Dimethylacetamide and 108 parts by weight. MDI mixed at 25 ° C, heated to 50 ° C and kept at this temperature for 95 min. The result is a NCO prepolymer with 2.20% by weight isocyanate end groups. Then that will Cooled prepolymer to 20 ° C and diluted with 598 parts by weight of DMAC.
- the following additives are added to this spinning solution via various master batches added (all data in% by weight based on the fiber solids): 1% by weight Cyanox 1790® (Cytec, USA, stabilizer), 3.75% basic polyurethane. out Dicyclohexylmethane diisocyanate and bis-2-hydroxypropyl-N-methylamine (nitrogen oxide quencher), 0.05% by weight of titanium dioxide, 0.2% by weight of magnesium stearate (Lubricant), 0.3 wt.% Polyether siloxane Silwet L 7607 (from OSI, antistatic) and optionally 1% by weight of polydimethylsiloxane (internal release agent).
- a polyurethane polyurea spinning solution was prepared as described above. It contained 0.35% by weight of magnesium stearate based on the solid and 0.98% by weight of polydimethylsiloxane (Baysilone M 100, commercial product from Bayer AG), 0.35% by weight of siloxane wetting agent (Silwet L 7607, commercial product) the OSI Inc.) and 0.05% by weight titanium dioxide (rutile RKB 2 from Bayer AG).
- the solution was dry-spun in a manner according to the invention on a spinning apparatus, in the spinning head of which 8 nozzles with two nozzle holes each 0.3 mm in diameter were arranged such that their distance on the common nozzle plate was 54 mm and the distance from two nozzle holes on adjacent plates was at least 62 mm was.
- the vertical spinning apparatus had tempered wall surfaces that were kept at about 220 ° C. Through a fine wire screen in the spinning head, spinning gas at 55 Nm 3 / h at 290 ° C was fed in a laminar flow.
- the individual filaments formed were passed through a first thread guide element with circular ceramic eyelets and then two of these individual filaments were combined in a second thread guide element with a comb-like shape to form a multifilament yarn.
- the multifilament yarns then passed through an infeed godet, a preparation oil applicator roller and a second godet before they were wound up at 880 m / min into bobbins with 560 g support.
- the multifilament yarn according to the invention had a titer of 45 dtex.
- a wrapping yarn machine such as e.g. described is by H. Gall and M. Kausch in Chap. 13 polyurethane elastomer fibers in Becker / Braun: Plastic Handbook Vol. 7 Polyurethane, Carl Hanser Verlag, Kunststoff, 1993, p. 689, put on the elastane multifilament yarn according to the invention and divided into two adjacent hollow spindles to form a winding yarn processed with nylon yarns as a cover.
- the bobbins ran in without thread break the dividing zone and in the conveyor and spindle area of the winding machine and gave satisfactory combination yarn.
- Example 2 The procedure was as in Example 1, but using a spinning solution 0.25% by weight of magnesium stearate, 0.7% by weight of polydimethylsiloxane and 0.25 wt .-% siloxane wetting agent used. There were spinnerets with one Nozzle hole spacing of 34 mm is used on the nozzle plate. At the end of The 8 multifilament yarns consisting of two filaments each became spinning equipment passed through a conventional swirl device, in this case an air rotating nozzle, compared to the normal process, conditions for less false twist have been set. The result was a dtex 45 multifilament yarn with two Individual filaments, which could be split up in a manual test.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Artificial Filaments (AREA)
Description
Claims (5)
- Verfahren zur Herstellung von teilbaren Elastan-Multifilamentgarnen durch Spinnen einer Spinnlösung nach dem Trockenspinnverfahren mittels einer Trockenspinn-Apparatur mit einer oder mehreren Mehrloch-Spinndüsen, Laminarisierung der Gasströmung in der Trockenspinnapparatur zum Unterbinden der Verwirbelung der Einzelfilamente aus der Mehrlochdüse und aus benachbarten Mehrlochdüsen, Führen der gebildeten Elastangarne nach dem Verlassen des Spinnschachtes durch Fadenleitorgane und Aufwicklung des Multifilaments,
dadurch gekennzeichnet, daß
eine oder mehrere Mehrlochspinndüsen eingesetzt werden, deren Einzelbohrungen auf einer Platte liegen, wobei der Abstand x der Bohrungen voneinander auf einer Düsenplatte und deren Abstand y zu Bohrungen auf benachbarten Mehrloch-Spinndüsenplatten der Beziehung: 40mm < x < y < 500mm gehorcht, und daß die gebildeten Elastangarne nach dem Verlassen des Spinnschachtes durch ein erstes Fadenleitorgan mit einer Öffnung pro Einzelfilament und danach durch ein zweites Fadenleitorgan geführt werden, bei dem mehrere Einzelfilamente zu einem Multifilament zusammengefaßt werden. - Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß man die Gasströmung laminarisiert durch Verwendung eines Spinnkopfes, der aus Spinndüsen mit einer oder mehreren Bohrungen, Zuleitungen für das zu verspinnende Gut, einer Spinngaszuführung und -verteilung besteht, und bei dem die Spinngaszuführung aus einem zentralen Gasrohr besteht und die Spinngasverteilung aus einer zylindrischen Kammer, in die das Gasrohr mündet, deren Durchmesser wenigstens dreimal so groß ist wie der Durchmesser des zentralen Gasrohres, deren Höhe maximal 25 % des Kammerdurchmessers beträgt, die einen gasdurchlässigen Boden mit einer freien Fläche von 2 bis 15 % aufweist, und in der unterhalb des zentralen Gasrohres ein Prallplattensystem angebracht ist, das aus mehreren mit Abstand voneinander horizontal und konzentrisch angebrachten, sich überlappenden, im Durchmesser gestuften Kreisringen und einer Kreisplatte besteht.
- Verfahren nach Anspruch 1 bis 2, dadurch gekennzeichnet, daß man als erstes Fadenleitorgan eine Ösenplatte und als zweites Fadenleitorgan einen Kammfadenführer verwendet.
- Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Elastan-Multifilamentgarne aus zwei bis sechs Einzelfilamenten bestehen und Titer von 10 bis 120 dtex aufweisen.
- Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Elastan-Multifilamentgarne aus vorzugsweise zwei Einzelfilamenten bestehen und Titer von 30 - 50 dtex aufweisen.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19527436 | 1995-07-27 | ||
DE19527436 | 1995-07-27 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0756026A1 EP0756026A1 (de) | 1997-01-29 |
EP0756026B1 true EP0756026B1 (de) | 2002-03-27 |
Family
ID=7767918
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96111361A Expired - Lifetime EP0756026B1 (de) | 1995-07-27 | 1996-07-15 | Verfahren zur Herstellung von teilbaren Elastangarnen |
Country Status (3)
Country | Link |
---|---|
US (2) | US5723080A (de) |
EP (1) | EP0756026B1 (de) |
DE (1) | DE59608945D1 (de) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4330725A1 (de) * | 1993-09-10 | 1995-03-16 | Bayer Ag | Verfahren zur Herstellung von Elastanfasern durch Einspinnen einer Kombination von PDMS und ethoxyliertem PDMS |
US6214145B1 (en) | 1996-07-24 | 2001-04-10 | Dupont Toray Co., Ltd. | Coalesced multifilament spandex and method for its preparation |
DE10258587A1 (de) * | 2002-12-16 | 2004-06-24 | Bayer Faser Gmbh | Verfahren zur Herstellung von Polyurethanharnstofffasern durch Einspinnen einer Kombination aus Polydimethylsiloxan, alkoxyliertem Polydimethylsiloxan und Fettsäuresalz |
US7406818B2 (en) * | 2004-11-10 | 2008-08-05 | Columbia Insurance Company | Yarn manufacturing apparatus and method |
CN103270205A (zh) * | 2010-12-28 | 2013-08-28 | 英威达技术有限公司 | 具有可分离、摩擦力降低的长丝的双组分斯潘德克斯 |
CN104928769B (zh) * | 2015-07-13 | 2018-01-30 | 北京化工大学 | 一种有双层料筒分段式喷头的纺丝进料喷丝系统 |
IN201621014375A (de) * | 2016-04-25 | 2016-12-30 | ||
CN109689952A (zh) * | 2016-07-29 | 2019-04-26 | 服饰与高级纺织英国有限公司 | 从斯潘德克斯聚合物纺丝溶液消除硅油 |
CN111194364B (zh) * | 2017-10-18 | 2022-07-26 | 旭化成株式会社 | 聚氨酯弹性纤维、其绕纱体、及包含其的制品 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL280787A (de) * | 1961-07-11 | |||
US3596458A (en) * | 1966-07-06 | 1971-08-03 | Asahi Chemical Ind | Spun yarn of elastic fiber and preparation thereof |
US3657873A (en) * | 1969-12-08 | 1972-04-25 | Kirkland H Gibson | Composite elastic core yarn |
CA1064884A (en) * | 1977-01-21 | 1979-10-23 | John E. Myers | Method and apparatus for collecting fibers |
DE3129350A1 (de) * | 1981-07-24 | 1983-02-10 | E.I. du Pont de Nemours and Co., 19898 Wilmington, Del. | Flache aufloesbare kettengewirkebahn aus elastischen faeden |
AU559183B2 (en) * | 1982-04-05 | 1987-02-26 | Maeda, S. | Core yarn |
BR8505705A (pt) * | 1984-11-15 | 1986-08-12 | Du Pont | Fieira |
US4679998A (en) * | 1984-11-15 | 1987-07-14 | E. I. Du Pont De Nemours And Company | Spinneret having groups of orifices with various interorifice spacing |
DE3534311A1 (de) * | 1985-09-26 | 1987-04-02 | Bayer Ag | Vorrichtung und verfahren zur herstellung von elastomerfaeden |
JP2724214B2 (ja) * | 1989-07-25 | 1998-03-09 | 旭化成工業株式会社 | 分繊用弾性糸及びその製造方法 |
US5002474A (en) * | 1989-11-28 | 1991-03-26 | E. I. Du Pont De Nemours And Company | Spinneret for dry spinning spandex yarns |
US5387387A (en) * | 1993-09-30 | 1995-02-07 | Alex James & Associates, Inc. | Method and apparatus for dry spinning spandex |
-
1996
- 1996-05-16 US US08/648,473 patent/US5723080A/en not_active Expired - Fee Related
- 1996-07-15 DE DE59608945T patent/DE59608945D1/de not_active Expired - Fee Related
- 1996-07-15 EP EP96111361A patent/EP0756026B1/de not_active Expired - Lifetime
-
1997
- 1997-10-29 US US08/960,694 patent/US6562456B1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0756026A1 (de) | 1997-01-29 |
US5723080A (en) | 1998-03-03 |
US6562456B1 (en) | 2003-05-13 |
DE59608945D1 (de) | 2002-05-02 |
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