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
  • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
  • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
  • D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
  • D06M15/244—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of halogenated hydrocarbons
  • D06M15/256—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of halogenated hydrocarbons containing fluorine
• • 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
  • D06M11/07—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 halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof
• • 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
  • D06M11/07—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 halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof
  • D06M11/09—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 halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof with free halogens or interhalogen compounds
• • 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
  • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
  • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
  • D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
  • D06M15/263—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated carboxylic acids; Salts or esters thereof
  • D06M15/277—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated carboxylic acids; Salts or esters thereof containing fluorine
• • 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
  • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
  • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
  • Y10T442/2164—Coating or impregnation specified as water repellent
  • Y10T442/2189—Fluorocarbon containing
• • 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
  • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
  • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
  • Y10T442/2221—Coating or impregnation is specified as water proof
  • Y10T442/2238—Fluorocarbon containing
• • 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
  • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
  • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
  • Y10T442/2279—Coating or impregnation improves soil repellency, soil release, or anti- soil redeposition qualities of fabric
  • Y10T442/2287—Fluorocarbon containing
• • 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
  • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
  • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
  • Y10T442/2311—Coating or impregnation is a lubricant or a surface friction reducing agent other than specified as improving the "hand" of the fabric or increasing the softness thereof
  • Y10T442/232—Fluorocarbon containing

Definitions

• the invention relates to a textile fabric and a yarn made of synthetic fibers, coated with fluoropolymers as well as the production of a textile fabric and a yarn and their use.
• aqueous fluoropolymer preparations which are finer Distribution 25 to 60 wt .-% of a fluoropolymer, 1 to 5 wt .-% of at least two Organic compound containing isocyanate groups and optionally up to 10% by weight Contain auxiliaries or additives.
• These fluoropolymer preparations are used for coating of yarn and textile fabrics made of dyed or undyed, smooth or textured synthetic filaments or fibers and used for bonding sewing thread.
• Such fluoropolymer compositions have coated fabrics at least in the fluoropolymer layer immediately adjacent to the fiber surface or several adhesion-promoting components, which differ from two or more Derive organic compound having isocyanate groups.
• the adhesive strength of the Fluoropolymer layer measured in accordance with DIN 53530, is at least 10 daN / 5cm.
• a method is known from German published patent application DE 33 01 270 A Sheathing fibers or filament yarns with a fluorine-containing polymer. With this The filament to be encased is processed through a central hole in a complex process Ring spinneret pulled while simultaneously leaving the ring spinneret a fluoropolymer tube is extruded. The extruded hose therefore surrounds it from the central hole pulled out filament as a loose fitting coat. A firm bond between the Fluoropolymer tubing and the filament covered by it do not enter.
• Chlorofluoropolymers such as. B. mono- or copolymers of 2-chloro-perfluoropropylene, Chlorotrifluoroethylene, bromotrifluoroethylene, trifluoroethylene, chlorofluoroethylene and vinylidene fluoride, to convert them into spatially cross-linked polymers in order to improve their solubility and their thermoplastic To reduce flow and the elastomers quasi a mild vulcanization submit.
• Adhesive strength of the fluoropolymer on the synthetic fiber is an essential requirement. Under Adhesive strength is the separation resistance of the carrier and coating of a 5 cm wide Strip to understand how it is determined based on DIN 53530. Adequate Serviceability of the network is guaranteed if, depending on the planned application Adhesion values of 100 to 150 N / 5cm can be achieved. For some areas of application are even Adhesion values of more than 200 N / 5cm desirable.
• Suitable di- and polyisocyanates are for example the isomeric 2,4-di-isocyanato-toluene and their mixtures, 1,5-di-isocyanatonaphthalene, Di-isocyanato-diphenylmethane and its technical isomer mixtures, dimerized and trimerized 2,4-di-isocyanato-toluene, adducts of di-isocyanato-toluene with Trimethylolpropane and tris [isocyanatohexyl] biuret.
• Fluoropolymer preparations according to the invention are the derivatives of diisocyanatotoluene mentioned, in particular its dimerization product, which is from Bayer AG previously marketed under the name ®Desmodur TT.
• the object of the invention is to improve the adhesion of fluoropolymer coatings on synthetic fibers and filaments and the yarns and textiles made from them Sheets as well as on sewing threads with such fluoropolymer coatings are bound to achieve.
• This object is achieved in such a way that the surfaces of the synthetic fibers are fluorinated and that an immediately adjacent to the fabric surface Fluoropolymer coating is free of adhesion-promoting components.
• the gas-phase fluorination activates polymer surfaces at a high level over the long term. Fluorine is the most reactive element in the periodic table and can therefore be brought to controllable reactions with almost all inorganic and organic compounds at room temperature without further activation by means of catalysts or UV light. During fluorination, hydrogen atoms on the polymer surface are partially substituted by fluorine atoms. This creates an active surface on which mechanical and chemical bonds are possible.
• the gas phase fluorination is carried out by various suppliers using the contract process and is part of the state of the art.
• the gas phase pretreatment is carried out with fluorine in the absence of oxygen, ie the reaction takes place in a vacuum or in a fluorine / inert gas mixture, it is actually fluorination. If, on the other hand, oxygen is also present in the reaction space, then it is an oxifluorination. With this type of activation, not only fluorine atoms but also hydroxyl and carboxyl groups are found at the radical sites of the carbon chain, which also increases the surface activity. All technical textiles, foils, foams and the like, which should be hydrophilic, for example, can be oxy-fluorinated.
• a mixture of up to 10% fluorine in 90% inert carrier gas or oxygen-enriched carrier gas for example air
• the technical textiles, plastic films, foams, yarns and the like generally being followed the inline process, which works from roll to roll and the material passes through one chamber with the reactive medium.
• the actually selected conditions depend, among other things, on the treatment duration, the polymer type, the yarn properties (filament fineness, degree of intermingling, surface pretreatment, etc.) and the surface construction (density, weight, etc.).
• the fluorination affects only the outer layers of the polymer material, whereby from experience the distribution of fluorine in these layers is very homogeneous. It is therefore reasonable to increase the fluorine content of the polymer in units of mg fluorine per unit area specify. For technical reasons, this value is often determined by first determine the fluorine content of the filaments contained in the sample per unit weight and then onto the surface of the filaments using the filament diameter and the density of the filaments.
• the fluorine concentration of the fluorination atmosphere is 0.1 to 10%
• the synthetic fibers have a fluorine content of 1.3 x 10 -4 to 1.2 x 10 -2 mg F / cm 2 .
• the fluorine concentration can be 0.1 to 5%.
• the measured fluorine content per unit weight was determined by first burning the respective fluorinated sample (without aftertreatment) in a pure O 2 atmosphere and absorbing the resulting combustion gases in H 2 O (Schöninger digestion). After filtration, the aqueous solution was injected into an ion chromatograph (DIONEX DX 120). The measured chromatogram was quantitatively evaluated over the peak areas after external calibration with fluoride standard solutions. The amount of sample examined was 30-100 mg, depending on the fluorine content that was tested in a preliminary test. The detection limit of the method used is 17 mg fluorine per 1 kg sample material, the limit of quantification is 46 mg F / kg.
• the synthetic fibers can be prepared using a Lowick preparation be equipped with a hydrophobic composition.
• synthetic fibers can also be used can be used that are free of Lowick preparation.
• the fluoropolymer coating has such an adhesive strength that through mechanical stress, as in the processing of threads from the fibers or Filament occurs, the fluoropolymer coating adheres and remains defect-free.
• a sewing thread is also bonded with fluoropolymers, in which the Surfaces of the synthetic fibers or filaments from which the sewing thread is composed, are fluorinated by means of fluoropolymers and directly the individual fibers or individual filaments elastic and flexible connecting fluoropolymer coating free of adhesion-promoting components.
• the bonding fluoropolymer coating shows such adhesive strength that due to mechanical stresses such as when sewing occur, a detachment of the fluoropolymer coating from the synthetic fibers or filaments omitted.
• the method according to the invention for producing a textile fabric from synthetic fibers is characterized in that the synthetic fibers in a first step in a Fluorine carrier gas atmosphere are fluorinated and that in a second step the fluorinated Synthetic fibers with an aqueous fluoropolymer composition on both sides of the Be coated.
• the fabric is at a temperature of 180 to Sintered at 210 ° C for up to two minutes.
• the front side is expediently first the fabric is sintered at a temperature of 180 to 210 ° C for up to two minutes and after the front, the back of the fabric at a temperature of 180 to 210 ° C sintered for up to two minutes. Simultaneous coating of the front and back is also possible, in which case a sintering time of 2 to 3 minutes is preferred is applied.
• the fabric is applied to a Temperature sintered up to 210 ° C and a residence time of six to ten minutes.
• the yarn is fluorinated in a first step in a fluorine carrier gas atmosphere and in a second step the fluorinated yarn is converted into an aqueous fluoropolymer composition immersed.
• the yarn is held in one for one to two minutes Environment that has a temperature of 180 to 220 ° C, heated.
• a bonded sewing thread is manufactured in such a way that in a first step the Sewing thread is fluorinated in a fluorine carrier gas atmosphere and that in a second step fluorinated sewing thread immersed in and placed on an aqueous fluoropolymer composition Application quantity from 14 to 21% by weight dry application, based on the weight of the sewing thread, is impregnated.
• the impregnated sewing thread is left for one to two minutes in an environment where the temperature is 180 to 220 ° C.
• the yarn according to the invention is used in the manufacture of textile fabrics, Woven, knitted, laid, non-woven, laminates made of the same or different textile fabrics.
• the textile fabrics according to the invention are used to manufacture flexible containers, Expansion joints, bellows, tarpaulins, tents, air halls, membranes, conveyor belts, Fabric tubes and the like are used.
• Textile fabrics in the sense of the invention are two-dimensional structures, for example Knitted fabrics, fabrics, scrims or nonwovens of different thicknesses, as well as laminates of the same or different fabrics, if necessary in combination with application-specific Blend components.
• These are e.g. B. pigments, fillers, flame retardant Agents and modifiers, such as plasticizers, lubricants, which improve the surface properties modify the fluoropolymer coating such.
• filaments or fibers of the invention are threads made with a fluoropolymer composition are coated and used as threads or yarns.
• the filaments or fibers can be colored or undyed, smooth or textured.
• fluoropolymer coating can be carried out in one operation on what is to be coated Synthetic fiber material can be applied.
• Synthetic fiber material can be applied.
• thicker fluoropolymer layers these are applied in layers in several steps, depending on the chosen one Composition of the fluoropolymer coating and the resulting consistency Impregnation of the synthetic fibers by dipping, splashing or paste application, e.g. B. by Doctoring or rolling.
• the so-called base coat to be carried out with a fluoropolymer coating, the none or only few other additives, especially no solid additives such as pigments or contains flame retardant additives.
• the top line or several top lines can then be used a normal aqueous fluoropolymer dispersion or paste, the further Additives such as B. dispersants, wetting agents, pigments, flame retardants or other fillers May contain auxiliaries.
• the cover layer can also be made using known coating methods for elastomers, e.g. roll melting systems or extrusion processes, be applied.
• the application of fluoropolymer equipment in one Operation is when applying the fluoropolymer coating on threads made of synthetic fibers or filaments advantageous.
• Polyester, polyamide or aramid synthetic fibers come into consideration as fiber material. she can be colored or uncolored, smooth or textured. A commercial migration Textile dyes from the synthetic fibers in the fluoropolymer coating cannot be determined. On Due to the high mechanical strength properties of these fibers, the fluoropolymer-coated Materials have excellent mechanical strength values that extend the range of their expand the technical fields of application very strongly. In addition to those for these synthetic fibers these fibers have characteristic high mechanical strength values after Fluoropolymer coating very lubricious, chemical resistant, weatherproof and dirt-repellent surfaces.
• bonded sewing threads which are particularly high strength and excellent have sewing properties.
• Particularly good sewing threads are obtained from type 712 KoSa GmbH & Co. KG, which is available in a wide range of fineness / number of filaments (49 dtex f 16 - 940 dtex f 200).
• the flexible connection is under bonding of the sewing thread to understand the individual filaments of the yarn through the fluoropolymer coating.
• the inert Fluoropolymer coating does not lose its bonding effect by the application of Preparations (additives) to further improve the running properties and to reduce the Yarn friction.
• the coated synthetic fibers, threads and synthetic filaments as well as the bonded sewing thread have a high adhesive strength of the fluoropolymer coating, so that by mechanical Strain as it occurs during the further processing of the threads or the intended Use of the sewing thread, for example when rewinding, knitting, weaving or when Sewing process itself, do not lead to a detachment of the fluoropolymer coating.
• Test fabrics were made by using a chain of polyester monofilaments a diameter of 0.15 mm and a thread density of 12 Fd / cm in P 1/2 weave Polyester yarn of type T 710 with 1100/1670) dtex f200, type T 711 with 1100 (1670) dtex f 200 or a Vectran® thread with 1670 dtex f 300 with a thread density of 18 Fd / cm was shot. Due to their mechanical strength (T710, Vectran®) and its Lowick property (T711 Lowik) for textile construction or for the Manufacturing of transport systems particularly suitable.
• tissue samples which were generally not further treated before fluorination are referred to as "standard" in Tables 1, 2 and 3 below.
• standard for Type T711, an additional test was carried out with a tissue sample that was washed before fluorination in order to remove impurities (e.g. preparation components) from the surface.
• the tissue samples were washed in an apparatus which contained a volume of 200 l of water with a liquor ratio of about 1: 133 according to the following temperature-time program: step 1 2 3 4 5 6 Temperature (° C) 60 80 80 60 40 cold Time (min) 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20
• step 1 2 4 hydrosulfite 2 Emulsogen EL 2 Hostapal FA 0.5 0.5 Soda calc 2 5 60% acetic acid 0.5
• step 2 4 hydrosulfite 2 Emulsogen EL 2 Hostapal FA 0.5 0.5 Soda calc 2 5 60% acetic acid 0.5
• step 2 4 hydrosulfite 2 Emulsogen EL 2 Hostapal FA 0.5 0.5 Soda calc 2 5 60% acetic acid 0.5
• step 2 4 hydrosulfite 2 Emulsogen EL 2 Hostapal FA 0.5 0.5 Soda calc 2 5 60% acetic acid 0.5
• oxifluorination took place in the range from 0.25 to 10% fluorine concentration in air, especially with fluorine concentrations of 0.25%, 0.5%, 1%, 5% and 10%, the treatment duration being at room temperature (20 to 25 ° C) and standard atmospheric pressure was 3 min each.
• the fluorine content of the individual synthetic fibers in the fabrics was up to 1.2 x 10 -2 mgF / cm 2 .
• a commercially available aqueous fluorine copolymer of tetrafluoroethylene, hexafluoropropylene and Vinylidene fluoride assemblies (THV 340 C from Dyneon) were used with a thickener based on a polyacrylate (Viscalex VG2 from Ciba) thickened by stirring in one Kneader for a period of about 15 min at room temperature from 20 to 25 ° C.
• a fluorine copolymer are commercially available fluoropolymer preparations with 40 to 60% tetrafluoroethylene assemblies, 10 to 30 wt% hexafluoropropylene assemblies and 20 to 40 wt% Suitable vinylidene fluoride polymer assemblies.
• the proportion of the thickener in the fluorine copolymer is 1 to 3 wt .-%, based on the fluorine copolymer weight.
• a double-sided primer is applied with a Paste from THV340 C from Dyneon, with 2% by weight thickener Viscalex VG2 from the company Ciba had been thickened.
• the sample was sintered 2 minutes at a temperature of 200 ° C before the back (RS) was treated in the same way. This caused the front to experience one double temperature treatment.
• the textile fabric was then welded to a material that was welded to a commercially available fluorine copolymer (Fluorguard T) from Mehler Haku was coated.
• the welding was carried out in a 15 kW HF device under 5 bar pressure with a power of 75% over a period of 15 sec.
• the adhesive strength was measured in accordance with DIN 53 530. The results are shown in Tables 1 to 3.
• the Lowick effect was determined using an internal laboratory test in which the penetration of a Test liquid in the edge of the coated fabric in both horizontal and vertical arrangement of the samples was measured.
• the tissue to be examined is 2 cm wide and approx. 17 cm long strips cut out in the weft direction.
• the hole is punched at the narrow end of the sample and this Then, immersed 10 mm deep in the methylene blue solution in a vertical arrangement of the sample; the test duration in this case is five (5) hours. After that, the sample is back with water cleaned and the rise height of the methylene blue solution measured in mm from the edge of the strip. The Measurement is repeated several times in order to obtain a reliable mean.
• Polyester thread type 711 Sample no. Labelling Fluorine concentration [%] VS liability [N / 5 cm] RS liability [N / 5 cm] Lowick after 5 hours [mm] A1 default 0 72 57 1 A2 default 0.25 390 103 1 A3 default 0.5 400 400 0.5 A4 default 1 400 400 0.5 A5 default 5 148 120 1.5 A6 default 10 144 148 16 A7 washed 0 85 54 0.5 A8 washed 0.25 400 132 0.5 A9 washed 0.5 410 400 0.5 A10 washed 1 400 400 0.5 A11 washed 5 340 310 1.3 A12 washed 10 132 110 15 Polyester yarn type 710 Sample no.
• Tables 1 to 3 are the samples with index 1 (fluorine concentration 0%) to the comparative samples without prior gas phase fluorination with a fluorine copolymer were treated (zero sample).
• Figures 1 and 2 below show the adhesion in N / 5cm as a function of the fluorine concentration in percent during the gas phase fluorination of samples T 711 and T 710. These figures show the curve of the adhesion as a function of the fluorination, as it is shown on the basis of the measurement data given in Tables 1 and 2.
• an aqueous fluoropolymer dispersion in which 2% by weight of a network and Dispersant based on an oxyethylated alkylphenol, 35% by weight of a fluorine copolymer and 63% by weight of demineralized water are mixed together.
• the wetting and dispersing agent is dissolved in the water and then the finely ground Fluorine copolymer of 55% by weight tetrafluoroethylene, 15% by weight hexafluoropropylene and 30 % By weight vinylidene fluoride slowly introduced into the water and until complete Homogenization of the dispersion stirred.
• dip impregnation described above can also be carried out with a commercially available one 35% fluoropolymer dispersion (THV 340 C ® from Dyneon).
• the quality of the sewing thread produced is carried out in accordance with the sewing test as described in DE-A 34 31 834 is described.
• the bonded Sewing thread averaged over 4,000 stitches without thread break, while in comparison one did not bonded thread on average only allows approx. 300 stitches without thread break.
• the sewing thread shows no migration of the dye into the bond and neither Nuances change. There is also no abrasion when sewing or rewinding and there is no sticking of the spool even if it is stored for a long time Thread layers.

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• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

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  • 2003-08-22 US US10/646,113 patent/US7267843B2/en not_active Expired - Fee Related
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