EP0639057B1 - Sewing thread, flat fabric sewed therewith and process for producing a splash-proof stitched seam - Google Patents

Sewing thread, flat fabric sewed therewith and process for producing a splash-proof stitched seam Download PDF

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Publication number
EP0639057B1
EP0639057B1 EP93909907A EP93909907A EP0639057B1 EP 0639057 B1 EP0639057 B1 EP 0639057B1 EP 93909907 A EP93909907 A EP 93909907A EP 93909907 A EP93909907 A EP 93909907A EP 0639057 B1 EP0639057 B1 EP 0639057B1
Authority
EP
European Patent Office
Prior art keywords
thread
seam
sewing
sewing thread
precursor material
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
Application number
EP93909907A
Other languages
German (de)
French (fr)
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EP0639057A1 (en
Inventor
Gerd Ebert
Thomas Seitz
Werner Amler
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Individual
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Individual
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Publication of EP0639057A1 publication Critical patent/EP0639057A1/en
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Expired - Lifetime legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D27/00—Details of garments or of their making
    • A41D27/24—Hems; Seams
    • 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
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B1/00—General types of sewing apparatus or machines without mechanism for lateral movement of the needle or the work or both
    • D05B1/26—General types of sewing apparatus or machines without mechanism for lateral movement of the needle or the work or both for making fluid-tight seams
    • 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
    • D06M11/73—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 carbon or compounds thereof
    • D06M11/74—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 carbon or compounds thereof with carbon or graphite; with carbides; with graphitic acids or their salts
    • 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
    • D06M11/77—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 silicon or compounds thereof
    • D06M11/79—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 silicon or compounds thereof with silicon dioxide, silicic acids or their salts
    • 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
    • D06M15/01—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural macromolecular compounds or derivatives thereof
    • D06M15/03—Polysaccharides or derivatives 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
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/01—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural macromolecular compounds or derivatives thereof
    • D06M15/03—Polysaccharides or derivatives thereof
    • D06M15/11—Starch or derivatives 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
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/01—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural macromolecular compounds or derivatives thereof
    • D06M15/15—Proteins or derivatives 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
    • 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
    • D06M15/227—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of hydrocarbons, or reaction products thereof, e.g. afterhalogenated or sulfochlorinated
    • 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
    • D06M15/248—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of halogenated hydrocarbons containing chlorine
    • 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
    • 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
    • D06M15/285—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated carboxylic acid amides or imides
    • 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
    • D06M15/327—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated alcohols or esters thereof
    • D06M15/333—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated alcohols or esters thereof of vinyl acetate; Polyvinylalcohol
    • 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
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/643—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain
    • 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
    • D06M15/693—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural or synthetic rubber, or derivatives 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
    • D06M23/00—Treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, characterised by the process
    • D06M23/04—Processes in which the treating agent is applied in the form of a foam
    • 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
    • D06M23/00—Treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, characterised by the process
    • D06M23/16—Processes for the non-uniform application of treating agents, e.g. one-sided treatment; Differential treatment
    • D06M23/18—Processes for the non-uniform application of treating agents, e.g. one-sided treatment; Differential treatment for the chemical treatment of borders of fabrics or knittings; for the thermal or chemical fixation of cuttings, seams or fibre ends
    • 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
    • D06M7/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made of other substances with subsequent freeing of the treated goods from the treating medium, e.g. swelling, e.g. polyolefins
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05D—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES D05B AND D05C, RELATING TO SEWING, EMBROIDERING AND TUFTING
    • D05D2305/00—Operations on the work before or after sewing
    • D05D2305/22—Physico-chemical treatments
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05D—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES D05B AND D05C, RELATING TO SEWING, EMBROIDERING AND TUFTING
    • D05D2305/00—Operations on the work before or after sewing
    • D05D2305/22—Physico-chemical treatments
    • D05D2305/26—Heating
    • D05D2305/265—Heating with steam
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05D—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES D05B AND D05C, RELATING TO SEWING, EMBROIDERING AND TUFTING
    • D05D2305/00—Operations on the work before or after sewing
    • D05D2305/22—Physico-chemical treatments
    • D05D2305/28—Physico-chemical treatments using particular electromagnetic waves
    • 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
    • D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
    • D06M2200/40—Reduced friction resistance, lubricant properties; Sizing compositions
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2101/00—Inorganic fibres
    • D10B2101/02—Inorganic fibres based on oxides or oxide ceramics, e.g. silicates
    • D10B2101/06—Glass
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2101/00—Inorganic fibres
    • D10B2101/10—Inorganic fibres based on non-oxides other than metals
    • D10B2101/12—Carbon; Pitch
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2211/00—Protein-based fibres, e.g. animal fibres
    • D10B2211/20—Protein-derived artificial fibres
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D10B2321/04—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polymers of halogenated hydrocarbons
    • D10B2321/042—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polymers of halogenated hydrocarbons polymers of fluorinated hydrocarbons, e.g. polytetrafluoroethene [PTFE]
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
    • D10B2331/02—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides
    • D10B2331/021—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides aromatic polyamides, e.g. aramides
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
    • D10B2331/08—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamino acids or polypeptides
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
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    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
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    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
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    • 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
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    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S57/00—Textiles: spinning, twisting, and twining
    • Y10S57/903—Sewing threads
    • 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
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    • Y10T428/2913—Rod, strand, filament or fiber
    • 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
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    • Y10T428/2927—Rod, strand, filament or fiber including structurally defined particulate matter
    • 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
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    • Y10T428/2929—Bicomponent, conjugate, composite or collateral fibers or filaments [i.e., coextruded sheath-core or side-by-side type]
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    • Y10T428/2933—Coated or with bond, impregnation or core
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    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2933—Coated or with bond, impregnation or core
    • Y10T428/2971—Impregnation

Definitions

  • An essential quality feature of a textile seam is the manner in which the material of the sewing thread is anchored in the material of the flat structures to be connected by the seam.
  • such anchoring is carried out continuously on each stitch, the lower thread provided on a spool of low capacity anchoring the upper thread.
  • For chain stitch seams only one or more threads running out of cones with large capacities are used, which are not anchored in every stitch.
  • the thread of the chain stitch seam is only anchored by sewing over at the ends of the seam. Thus, if the seam is damaged between the ends, pulling the thread will cause the entire seam to open. For this reason, the use of chainstitch seams is very limited in practice or disadvantageous when it is imperative to go up in the event of damage.
  • the higher quality stitching requires a lot of work because the stitching is not accessible to automation.
  • the bobbin must be changed by hand, so that the sewing process may have to be interrupted again and again after only a few minutes in order to enable the bobbin change.
  • An essential object of the invention is to create a sewing thread which makes it possible to use chain stitch seams also in those cases in which, for reasons of anchoring the seam thread, quilting seams have so far been used.
  • the outer surface can be provided with increased adhesion or adhesive action after sewing results in the thread adhering to the stitch links as well as to the flat structure or the material to be sewn in the area of the stitch holes.
  • the thread is held at each stitch linkage similarly to how the stitch thread is held by the lower thread. Therefore there is essentially the same security of the chain stitch seam against opening as in the case of a stitch seam.
  • the much cheaper option of producing the chain stitch seam can also be used in those cases in which a stitch seam was previously required to prevent the seam from coming off.
  • the other advantages of chain stitching can be exploited, such as the increased elasticity compared to quilting.
  • a sewing thread according to the invention can also be used for quilting seams if they are e.g. are required for optical reasons or reasons of comfort or the like.
  • DE-A-40 25 291 discloses a method for producing watertight or moisture-proof seams when sewing fabrics made of plastic or rubber materials or fabrics coated with plastic or rubber or of multilayer films made of plastic or rubber materials, optionally with metal foil are reinforced by inserting a molded body made of plastic or rubber film filled with a sealant when sewing between the parts to be sewn and allowing the sealant emerging from the pierced molded bodies to sew during crosslinking.
  • Organopolysiloxane compositions in particular are used as sealants.
  • DE-A-40 25 291 requires a more precise positioning of the moldings filled with sealing compound, in particular hoses, which leads to considerable positioning problems in the case of seams that may be several meters long and corresponding technical effort for it.
  • sealant constantly escapes at the puncture points, which is further favored by the fact that the material to be sewn is usually between the presser foot and the lower feed dog, which additionally puts pressure on the Sealant-filled hose is exerted, which leads to the fact that sealant constantly escapes and often gets to places on the sewing device and the sewing material, where the sealant is not desired or even harmful.
  • Another essential object of the invention is therefore to produce at least largely fluid-tight textile seams without the need for expensive separate sealing means.
  • the density decreases such that the same material occupies a larger space.
  • the material changes its shape in the microscopic range in such a way that this appears macroscopically as an increase in volume.
  • the size of the change in volume is to be dimensioned such that the stitch hole of the thread created during sewing is filled, so to speak, closed by the expansion. Enlarged diameters between 20% and 200%, preferably between 30% and 150%, in particular between 40% and 100%, are sufficient for this. For most materials, the best results are achieved with increases in diameter between 50% and 80%.
  • the outer layer of the thread can be formed by a foamable plastic, which is foamed in the usual way after the thread has been processed in the seam by the action of temperature and / or catalyst.
  • the foaming ratio can be kept low, for example below 1: 2, so that there is still a relatively firm surface of the expanded thread. Since the thread is still not foamed during processing, neither the foaming process nor the foamed consistency of the thread disturb its processing during the sewing process.
  • the invention can be used in that the polytetrafluoroethylene is mixed with an expandable material is applied, and the expandable material is expanded after processing by appropriate action, which causes expansion.
  • the surface can be formed by textile fiber material, which is applied, for example, by spinning a core, the core being made of tensile material.
  • the outer threads can be selected from a material which has the known "memory" effect, such that there is a considerable deviation of the longitudinal axis of the fiber from the straight line in the relaxed "final state".
  • crimped fibers can be used as the outer fibers. However, these are applied in a stretched form loosely, that is to say without tension and with play, and are then converted into their crimped shape or the like by activating the “memory” effect after processing. This does not result in an actual volume change in the strict sense, but an apparent volume change that is macroscopically similar to an actual volume change. This can be used in particular if the tightness requirements are not too high or, above all, increased thread friction is to be generated in the tap hole.
  • a physical conversion can also consist of converting insoluble materials, e.g. starch, into a soluble product, e.g. by heating, which then has the desired properties of adhesive action, sealability and / or swellability.
  • auxiliaries according to claim 5 it is possible with the auxiliaries according to claim 5 to set further properties, such as, for example, plasticity, suppleness, lubricity, residual water content, etc.
  • the adhesive effect becomes after a period of at most a few days deactivated on free surfaces of the thread. This ensures that when the sewn fabric is used as intended, there is no stickiness on the surface in the area of the seam, but there is a corresponding bonding of the surface so that it no longer has an increased adhesive effect.
  • the adhesive or adhesive effect persists in the areas in which the surface of the thread is in contact with other thread surfaces or with the surfaces of the sewn fabric, so that the adhesive or adhesive effect is maintained there unchanged or increased after setting.
  • acrylamide is used as the precursor material, which additionally contains the crosslinking agents methylenebisacrylamide and N, N, N ', N'-tetramethylethylenediamine and the plasticizer glycerol as auxiliaries.
  • a sewing thread provided with such a precursor material has the advantage that the acrylamide can easily be polymerized to polyacrylamide, for example with UV light and / or peroxides. After sewing, the thread loses water in one or more days. However, the glycerol retains a residual water content, so that after sewing, for example to form a chain stitch seam, the sewing thread obtains a plastic consistency, which makes it relatively sticky and thus adheres well to the sewing material and the stitch hole. If the seam thus obtained is then exposed to increased moisture in the finished textile, for example a downpour, the polyacrylamide gel swells again as a result of water absorption that the pinholes are filled by the polymer, whereby they are sealed watertight.
  • an "intelligent seam" is available, which swells reversibly in a particularly moist environment and shrinks again in a dry environment - without, however, losing its good adhesion to the sewing material.
  • starch insoluble in cold water in particular potato starches
  • the precursor material which is brought into solution by the action of heat after the sewing process, for example by means of steam, if necessary before being mixed with bactericidal or fungicidal agents to protect against microbiological decomposition, thereby a polysaccharide film forms on the sewing thread and in the vicinity of the tap hole. Similar to a wallpaper paste, this film has the property of sticking and analogously to the polyacrylamide system, it is able to reversibly absorb and swell water.
  • Textiles which are sewn with such a seam can also be washed at temperatures of about 40 ° C. to 60 ° C. without the starch precursor material being removed, since this comprises a starch which is insoluble in cold water and which is not yet soluble in the specified temperature range is.
  • the claims 8 to 11 relate to a sewable sheet which is sewn with a sewing thread according to the invention.
  • a piping tape or the like can run in between the layers of fabric to be connected and sewn at the seam.
  • This can consist of the same material as the material of the sewing thread and thus, after processing e.g. can also be expanded to generate additional sealing pressure. If necessary.
  • this piping band can also consist of another, in particular soft, elastic material which is compressed during the sewing process and in this way generates the sealing pressure. Keder tapes made of latex, soft rubber or the like are possible.
  • the volume increased after sewing for example swelling thread
  • the volume increased after sewing can achieve a similar advantage with regard to the wider applicability or the avoidance of disadvantages of chain stitch seams, as with the sewing thread with a surface with an increased adhesive effect.
  • the combined use of both measures i.e. increasing the surface area and increasing the adhesive effect, in particular adhesive effect, is of particular advantage since not only the holding effect of the thread of the chain stitch seam on the stitch links or in the stitch holes is thereby further increased, but also also the gluing of the sewing thread makes an additional contribution to the tightness.
  • a tightness against water penetration can be supported in particular by making the adhesive thread hydrophobic.
  • both the sewing thread with the surface with an increased adhesive effect and the swellable sewing thread can be used in a quilted seam if this should be desired or required in the individual case.
  • the ability to swell also leads to a corresponding seal in the context of a quilting seam, while the adhesive effect further increases the anchoring of the quilting seam; this can be of interest, for example, if a structure provided with such a seam is divided into many small structures should be held by a short distance of the seam.
  • the core of the thread can consist of any suitable tensile material that is compatible with the material of the expandable surface layers.
  • any suitable tensile material that is compatible with the material of the expandable surface layers.
  • cotton, kevlar, carbon fibers or glass filament can be used as the material for the soul.
  • the soul does not fundamentally need to be made of a different material than the surface layers, as long as it is ensured that the expansion effect is limited to the surface layers.
  • a commercially available sewing thread is passed through an aqueous solution of a silicone resin as the precursor material.
  • a silicone resin Commercial silicone resin MK from Wacker-Chemie AG is used as the silicone resin.
  • the sewing thread After the sewing thread has passed the immersion bath or a sponge soaked with the silicone resin solution, it is fed to the sewing device and, for example, parts of a motorcycle clothing are sewn as sewing material by means of this thread.
  • the resulting seam is subjected to an activation treatment in that a commercially available hardener in aqueous solution, in the example an organoaluminum compound, commercially available under the name F100% of Wacker-Chemie, is applied to the fresh seam using a spray nozzle.
  • a commercially available hardener in aqueous solution in the example an organoaluminum compound, commercially available under the name F100% of Wacker-Chemie
  • the precursor silicone resin is converted into a high-polymer silicone resin, which on the one hand gives the seam increased adhesion to the material to be sewn and on the other hand makes the needle insertion points of the seam essentially watertight, whereby in addition to the expansion effect, the adhesive seal in the The foreground is.
  • the watertightness essentially results from the adhesive properties of the silicone resin, which coats the thread in the tap hole and then sets or cross-links and adheres to both the sewing thread and the material.
  • a commercially available sewing thread for example a cotton thread, is passed as in Example 1 through an aqueous solution of a copolymer of vinyl chloride and vinyl acetate and a plasticizer, in the example of diphenyl phthalate. Then the thread so impregnated is fed to a sewing device, in the example of a commercially available industrial sewing machine.
  • the copolymer of vinyl chloride and vinyl acetate in the form of an aqueous dispersion with cellulose as stabilizer serves as the precursor material and in the example case Vinnol dispersion 50 / 25C, which is sold by Wacker-Chemie AG, is used for this purpose.
  • a rainwear made of a plastic material is sewn on the sewing machine with the sewing thread according to the invention as a chain stitch seam. Subsequently the seam is subjected to a high-frequency treatment as an activation treatment, in particular a microwave treatment, for a short time. It is advantageous here if additional microwave absorbers such as carbon black, graphite or conductive metal oxides or the like are added to the dispersion.
  • This type of activation treatment converts the precursor material, in the example the copolymer of vinyl acetate and vinyl chloride, into a product which has good adhesive properties and sealing properties, as a result of which the needle insertion points of the seam are at least made splash-proof, so that, for example, a motorcycle rider wearing such rainwear , do not have to fear that water penetrates at the needle insertion points.
  • a commercially available cotton sewing thread is led during the processing to a seam through an aqueous solution of an acrylamide and the auxiliaries methylenebisacrylamide and N, N, N ', N'-tetramethylethylenediamine as crosslinking auxiliaries and glycerol as a plasticizer.
  • the sewing thread treated in this way is then fed to an industrial sewing machine and the material to be processed is sewn with this thread in a chain stitch seam.
  • An activation treatment is then carried out by spraying an aqueous solution of ammonium peroxide onto the seam and additionally illuminating it with a UV lamp.
  • the acrylamide or any acrylamide oligomers present are crosslinked with methylenebisacrylamide and N, N, N ', N'-tetramethylethylenediamine converted to a gel-like polymer product.
  • a polymer product gives the sewing thread good adhesion to the sewing material in the area of the stitch holes and on the other hand there is an "intelligent seam" with this system, since the suture material will initially lose water at ambient temperature in a relatively dry environment, which, however is only possible to a certain extent because, in addition to its property as a plasticizer, the glycerin also acts as a water retainer, resulting in an overall plastic consistency and a good adhesive effect of the sewing thread on the material.
  • the sewing thread swells up to 10 times its original volume in the dry state, which results in a particularly good seal due to the strong expansion in the needle stitch points , so that the rainwater cannot penetrate through the seam holes.
  • the present invention can also be used to manufacture a sewing thread according to the invention on an industrial scale, the raw thread being impregnated with a solution from the finishing agent customary in technology with the addition of the precursor materials and / or auxiliary substances according to the invention.
  • microwave absorbers such as graphite, carbon black or conductive metal oxides
  • Add softening agent so that the conversion of the precursor material to the product with the desired properties can preferably be carried out by microwave absorption.
  • the resulting seam is guided in the direction of an outlet opening 6.
  • This exit opening will Steam is supplied via a line 7 in the example, whereby the starch, which is insoluble in cold water, is converted as a precursor material to a product of a sticky consistency.
  • the product gives the seam increased adhesion to the material to be sewn and at the same time seals the needle insertion points of the seam so that they are made essentially watertight.
  • the resulting starch product can still absorb water after it has been dried, for example in rainwear for motorcyclists, as a result of which the sewing thread swells up and thereby seals the needle insertion points in the material particularly well through expansion.
  • the excess water vapor produced can be discharged via a steam suction 8.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Details Of Garments (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Sewing Machines And Sewing (AREA)
  • Laminated Bodies (AREA)
  • Outer Garments And Coats (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

PCT No. PCT/EP93/01110 Sec. 371 Date Jan. 9, 1995 Sec. 102(e) Date Jan. 9, 1995 PCT Filed May 6, 1993 PCT Pub. No. WO93/22943 PCT Pub. Date Nov. 25, 1993A sewing thread comprising at least one precursor material of a product at its outer surface, which imparts a stitched connection produced with such a thread an increased adherence to the material to be sewn. Furthermore, the invention provides a sewing thread wherein the applied precursor material transforms to form a product which is capable of enlarging the outer diameter of the sewing thread, particularly in an aqueous environment. Furthermore, the invention provides a method for producing waterproof stitched connections.

Description

Die Erfindung betrifft einen Nähfaden gemäß den Oberbegriffen des Ansprüches 1, ein hiermit vernähtes Flächengebilde gemäß dem Oberbegriff des Anspruchs 8 sowie ein Verfahren zur Herstellung von wenigstens spritzwassserdichten Nähten gemäß Anspruch 12.The invention relates to a sewing thread according to the preambles of claim 1, a flat fabric sewn to it according to the preamble of claim 8 and a method for producing seams which are at least splash-proof according to claim 12.

Ein wesentliches Qualitätsmerkmal einer textilen Naht besteht in der Art und Weise der Verankerung des Materials des Nähfadens in dem Material der durch die Naht zu verbindenden Flächengebilde. Bei Steppnähten erfolgt eine solche Verankerung fortlaufend an jedem Stich, wobei der auf einer Spule geringen Fassungsvermögens zur Verfügung gestellte Unterfaden den Oberfaden verankert. Bei Kettenstichnähten wird lediglich mit einem oder mehreren, von Konen großen Fassungsvermögens ablaufenden Fäden gearbeitet, die nicht in jedem Stich verankert werden. Die Verankerung des Fadens der Kettenstichnaht erfolgt lediglich durch Übernähen an den Enden der Naht. Wenn somit eine Beschädigung der Naht zwischen den Enden auftritt, so führt ein Zug am Faden zu einem Aufgehen der gesamten Naht. Aus diesem Grunde ist der Einsatz von Kettenstichnähten in der Praxis sehr beschränkt bzw. nachteilig, wenn ein Aufgehen bei Beschädigung notgedrungen in Kauf genommen wird.An essential quality feature of a textile seam is the manner in which the material of the sewing thread is anchored in the material of the flat structures to be connected by the seam. In the case of quilting seams, such anchoring is carried out continuously on each stitch, the lower thread provided on a spool of low capacity anchoring the upper thread. For chain stitch seams, only one or more threads running out of cones with large capacities are used, which are not anchored in every stitch. The thread of the chain stitch seam is only anchored by sewing over at the ends of the seam. Thus, if the seam is damaged between the ends, pulling the thread will cause the entire seam to open. For this reason, the use of chainstitch seams is very limited in practice or disadvantageous when it is imperative to go up in the event of damage.

Andererseits erfordern die qualitativ höherwertigen Steppnähte erheblichen Arbeitsaufwand, da die Steppnaht der Automatisierung nicht zugänglich ist. Nach Aufbrauch der Fadenreserve für den Unterfaden auf der Spule muß von Hand ein Spulenwechsel erfolgen, so daß der Nähvorgang ggfs. bereits nach wenigen Minuten immer wieder unterbrochen werden muß, um den Spulenwechsel zu ermöglichen. Wäre ein Kettenstichnaht anwendbar, so könnte ohne einen Spulen- oder Konenwechsel über einen ganzen Arbeitstag hinweg oder noch länger unterbrechungsfrei gearbeitet werden, so daß vielfältige Automatisierungsmaßnahmen eingesetzt werden können.On the other hand, the higher quality stitching requires a lot of work because the stitching is not accessible to automation. After the thread reserve for the lower thread on the bobbin has been used up, the bobbin must be changed by hand, so that the sewing process may have to be interrupted again and again after only a few minutes in order to enable the bobbin change. Would be a chain stitch applicable, it could work without a spool or cone change over a whole working day or even longer without interruption, so that diverse automation measures can be used.

Eine wesentliche Aufgabe der Erfindung besteht darin, einen Nähfaden zu schaffen, der es ermöglicht, Kettenstichnähte auch in solchen Fällen anzuwenden, in denen aus Gründen der Verankerung des Nahtfadens bislang Steppnähte angewandt werden müssen.An essential object of the invention is to create a sewing thread which makes it possible to use chain stitch seams also in those cases in which, for reasons of anchoring the seam thread, quilting seams have so far been used.

Die Lösung dieser Aufgabe erfolgt durch die kennzeichnenden Merkmale des Anspruchs 1.This object is achieved by the characterizing features of claim 1.

Dadurch, daß die äußere Oberfläche nach dem Vernähen mit einer erhöhten Haftung bzw. Haftwirkung versehen werden kann, ergibt sich ein Anhaften des Fadens an den Stichverknüpfungen sowie an dem Flächengebilde bzw. dem Nähgut im Bereich der Stichlöcher. Hierdurch wird der Faden an jeder Stichverknüpfung ähnlich gehalten wie der Steppfaden durch den Unterfaden gehalten wird. Daher ergibt sich eine im wesentlichen gleiche Sicherheit der Kettenstichnaht gegen Aufgehen wie im Falle einer Steppnaht. Somit kann die wesentlich günstigere Fertigungsmöglichkeit der Kettenstichnaht auch in solchen Fällen genutzt werden, in denen bisher eine Steppnaht erforderlich war, um ein Aufgehen der Naht zu verhindern. Zugleich können damit die sonstigen Vorteile von Kettenstichnähten nutzbar gemacht werden, wie etwa die gegenüber Steppnähten erhöhte Elastizität. Andererseits kann aber ein erfindungsgemäßer Nähfaden auch bei Steppnähten eingesetzt werden, wenn diese z.B. aus optischen Gründen oder Gründen des Tragekomforts oder dgl. erforderlich sind.The fact that the outer surface can be provided with increased adhesion or adhesive action after sewing results in the thread adhering to the stitch links as well as to the flat structure or the material to be sewn in the area of the stitch holes. As a result, the thread is held at each stitch linkage similarly to how the stitch thread is held by the lower thread. Therefore there is essentially the same security of the chain stitch seam against opening as in the case of a stitch seam. Thus, the much cheaper option of producing the chain stitch seam can also be used in those cases in which a stitch seam was previously required to prevent the seam from coming off. At the same time, the other advantages of chain stitching can be exploited, such as the increased elasticity compared to quilting. On the other hand, a sewing thread according to the invention can also be used for quilting seams if they are e.g. are required for optical reasons or reasons of comfort or the like.

Die erhöhte Haftwirkung wird in der Regel am vorteilhaftesten durch eine Klebewirkung erzielt. Hierdurch lassen sich sehr hohe Haftkräfte erzielen, die eine dauerhafte Verbindung der Fäden an den Stichverknüpfungen und in den Stichlöchern gewährleisten.The increased adhesive effect is usually most advantageously achieved by an adhesive effect. As a result, very high adhesive forces can be achieved, which create a permanent connection ensure the threads at the stitch links and in the stitch holes.

Ferner ist es bekannt, textile Nähte dadurch abzudichten, daß die Nahtlinien mit Klebe- oder Schweißbändern überdeckt werden. Dies erfordert jedoch erheblichen Zusatzaufwand. Ohne die Verwendung solcher zusätzlichen Dichtmittel ergibt sich in jedem Falle eine Undichtigkeit beim Durchtritt des Fadens durch das Stichloch.It is also known to seal textile seams by covering the seam lines with adhesive or sweatbands. However, this requires considerable additional effort. Without the use of such additional sealants, there is always a leak when the thread passes through the tap hole.

Darüber hinaus offenbart die DE-A-40 25 291 ein Verfahren zur Herstellung von wasser- oder feuchtigkeitsdichten Nähten beim Vernähen von Geweben aus Kunststoff- oder Gummimaterialien oder mit Kunststoff oder Gummi beschichteten Geweben oder von Mehrschichtfolien aus Kunststoff- oder Gummimaterialien, die gegebenenfalls mit Metallfolie verstärkt sind, durch Einlegen eines mit einer Dichtungsmasse gefüllten Formkörpers aus Kunststoff oder Gummifolie beim Nähen zwischen die zu vernähenden Teile und Vernetzenlassen der beim Nähen aus den durchstochenen Formkörpern austretenden Dichtungsmasse. Als Dichtungsmassen werden insbesondere Organopolysiloxanmassen verwendet.In addition, DE-A-40 25 291 discloses a method for producing watertight or moisture-proof seams when sewing fabrics made of plastic or rubber materials or fabrics coated with plastic or rubber or of multilayer films made of plastic or rubber materials, optionally with metal foil are reinforced by inserting a molded body made of plastic or rubber film filled with a sealant when sewing between the parts to be sewn and allowing the sealant emerging from the pierced molded bodies to sew during crosslinking. Organopolysiloxane compositions in particular are used as sealants.

Ein derartiges Verfahren hat jedoch den Nachteil, daß zum einen die Nadel ständig mit aushärtbarem Dichtungsmaterial in Kontakt kommt, was beim längeren Vernähen sich sowohl auf die Präzision der Naht niederschlägt als auch zu Dichtungsmaterialresten an der Nadel führt, die beim weiteren Vernähen Schäden im Stoff und/oder an der Nadel oder gar der Nähvorrichtung anrichten können.However, such a method has the disadvantage that, on the one hand, the needle constantly comes into contact with hardenable sealing material, which, in the case of longer sewing, has an impact both on the precision of the seam and also leads to sealing material residues on the needle, which damage the fabric during further sewing and / or can be done on the needle or even the sewing device.

Darüber hinaus erfordert das Verfahren der DE-A-40 25 291 eine genauere Positionierung der mit Dichtungsmasse gefüllten Formkörper, insbesondere Schläuche, was bei unter Umständen meterlangen Nähten zu erheblichen Positionierungsproblemen und entsprechendem technischen Aufwand dafür führt.In addition, the method of DE-A-40 25 291 requires a more precise positioning of the moldings filled with sealing compound, in particular hoses, which leads to considerable positioning problems in the case of seams that may be several meters long and corresponding technical effort for it.

Ein weiterer Nachteil dieses Verfahrens des Standes der Technik liegt darin begründet, daß an den Einstichstellen ständig Dichtungsmasse austritt, was noch dadurch begünstigt wird, daß sich das Nähgut in der Regel zwischen dem Preßfuß und dem unteren Transporteur befindet, wodurch noch zusätzlich Druck auf den mit Dichtungsmasse gefüllten Schlauch ausgeübt wird, was dazu führt, daß ständig Dichtungsmasse austritt und häufig an Stellen der Nähvorrichtung sowie des Nähgutes gelangt, an welchen die Dichtungsmasse nicht erwünscht oder sogar schädlich ist.Another disadvantage of this method of the prior art is that sealant constantly escapes at the puncture points, which is further favored by the fact that the material to be sewn is usually between the presser foot and the lower feed dog, which additionally puts pressure on the Sealant-filled hose is exerted, which leads to the fact that sealant constantly escapes and often gets to places on the sewing device and the sewing material, where the sealant is not desired or even harmful.

Es besteht daher ein Bedürfnis, insbesondere fluiddichte textile Stoffe mit textilen Nähten zu verbinden, die ebenfalls ohne wesentliche aufwendige Zusatzmaßnahmen die entsprechenden Dichtigkeitsanforderungen erfüllen. In einem solchen Fall kann das textile Stoffmaterial häufig Kunststoffolien ersetzen, die durch Schweißen dicht miteinander verbunden sind.There is therefore a need to combine, in particular, fluid-tight textile materials with textile seams, which also meet the corresponding tightness requirements without any substantial additional measures. In such a case, the textile material can often replace plastic films that are tightly connected by welding.

Lösungen zur Bedriedigung dieses Bedürfuisses wurden durch die JP-A-54 006 968 bekannt.Solutions to meet this need have been disclosed in JP-A-54 006 968.

Ferner offenbart die JP-A 54 006 968 ein Verfahren zum Vernähen eines Flächengebildes, bei welchem eine wäßrige Emulsion einer Lösung vom Typ eines Harzes vom Typ Urethan, Acryl, EVA-Copolymer und/oder Polyvinylalkohol oder dergleichen, welche ein Schäumungsmittel umfaßt, auf ein faseriges Fadenmaterial aufgetragen wird und anschließend der nach Trocknung erhaltene Nähfaden zum Vernähen eines Flächengebildes verwendet wird, worauf die Naht einer Wärmebehandlung unterzogen wird, um das Fadenmaterial aufzuschäumen. Durch diesen Prozeß werden die von der Nähmaschinennadel verursachten Löcher im Stoff vollständig verschlossen. Darüberhinaus offenbart die JP-A 58 082 750 einen reliefgemusterten Stoff, sowie ein Verfahren zu seiner Herstellung unter Verwendung von mit Schmelzkleber imprägnierten Nähfäden.Furthermore, JP-A 54 006 968 discloses a method for sewing a sheet material in which an aqueous emulsion of a solution of the type of a resin of the type urethane, acrylic, EVA copolymer and / or polyvinyl alcohol or the like, which comprises a foaming agent, on a fibrous thread material is applied and then the sewing thread obtained after drying is used to sew a fabric, whereupon the seam is subjected to a heat treatment in order to foam the thread material. This process completely closes the holes in the fabric caused by the sewing machine needle. In addition, JP-A 58 082 750 discloses a relief patterned fabric and a process for its production using sewing threads impregnated with hot melt adhesive.

Eine weitere wesentliche Aufgabe der Erfindung besteht somit darin, zumindest weitgehend fluiddichte Textilnähte zu erzeugen, ohne daß hierzu aufwendige separate Dichtmittel erforderlich sind.Another essential object of the invention is therefore to produce at least largely fluid-tight textile seams without the need for expensive separate sealing means.

Bei Vergrößerung des tatsächlichen Volumens erfolgt ein Abfall der Dichte, derart, daß dasselbe Material einen größeren Raum einnimmt. Bei der Vergrößerung des scheinbaren Volumens ändert das Material seine Form im mikroskopischen Bereich derart, daß dies makroskopisch als volumenvergrößerung erscheint.As the actual volume increases, the density decreases such that the same material occupies a larger space. When the apparent volume is increased, the material changes its shape in the microscopic range in such a way that this appears macroscopically as an increase in volume.

Die Größe der Volumenänderung ist so zu bemessen, daß das beim Nähen erzeugte Stichloch des Fadens durch die Expansion ausgefüllt, sozusagen verschlossen wird. Hierfür reichen Durchmesservergrößerungen zwischen 20 % und 200 %, bevorzugt zwischen 30 % und 150 %, insbesondere zwischen 40 % und 100 % aus. Bei den meisten Materialien werden die besten Ergebnisse mit Durchmesservergrößerungen zwischen 50 % und 80 % erzielt.The size of the change in volume is to be dimensioned such that the stitch hole of the thread created during sewing is filled, so to speak, closed by the expansion. Enlarged diameters between 20% and 200%, preferably between 30% and 150%, in particular between 40% and 100%, are sufficient for this. For most materials, the best results are achieved with increases in diameter between 50% and 80%.

Für die herbeizuführende Volumenänderung steht eine Reihe von Maßnahmen zur Verfügung. So kann etwa die Außenschicht des Fadens durch einen schäumbaren Kunststoff gebildet werden, der nach der Verarbeitung des Fadens in der Naht durch Temperatur- und/oder Katalysatoreinwirkung in der üblichen Weise aufgeschäumt wird. Das Schäumverhältnis kann dabei gering, beispielsweise unter 1:2 gehalten werden, so daß sich dennoch eine relativ feste Oberfläche des expandierten Fadens ergibt. Da der Faden bei der Verarbeitung noch ungeschäumt vorliegt, stören weder der Schäumvorgang noch die geschäumte Konsistenz des Fadens dessen Verarbeitung beim Nähvorgang.A number of measures are available for the volume change to be brought about. For example, the outer layer of the thread can be formed by a foamable plastic, which is foamed in the usual way after the thread has been processed in the seam by the action of temperature and / or catalyst. The foaming ratio can be kept low, for example below 1: 2, so that there is still a relatively firm surface of the expanded thread. Since the thread is still not foamed during processing, neither the foaming process nor the foamed consistency of the thread disturb its processing during the sewing process.

Weiter kann daran gedacht werden, andere, insbesondere anorganische Blähmaterialien zu verwenden, insbesondere Blähperlit, Blähglimmer oder Blähgraphit. Insbesondere im Falle einer Verwendung von Blähgraphit ergibt sich zugleich eine gewünschte reibungsmindernde Beeinflussung der Oberfläche des Fadens, der dessen Verarbeitung beim Nähvorgang erleichtert.It can also be considered to use other, especially inorganic, expandable materials, in particular expanded perlite, expanded mica or expanded graphite. In particular, when expanded graphite is used, there is at the same time a desired friction-reducing influence on the surface of the thread, which facilitates its processing during the sewing process.

Insbesondere im Bereich größerer Fadendurchmesser ist es bekannt, eine Beschichtung der so erhaltenen Schnüre durch Polytetrafluorethylen vorzunehmen. Hier kann der Einsatz der Erfindung dadurch erfolgen, daß das Polytetrafluorethylen mit einem expansionsfähigen Material vermischt aufgebracht wird, und das expansionsfähige Material nach der Verarbeitung durch entsprechende Einwirkung, welche eine Expansion hervorruft, expandiert wird.In the area of larger thread diameters in particular, it is known to coat the cords thus obtained with polytetrafluoroethylene. Here, the invention can be used in that the polytetrafluoroethylene is mixed with an expandable material is applied, and the expandable material is expanded after processing by appropriate action, which causes expansion.

Schließlich ist denkbar, chemische Zustandsänderungen einer Oberflächenbeschichtung zur Volumenvergrößerung zu verwenden. In diesem Zusammenhang kann daran gedacht werden, Moleküle zu verwenden, welche in der Lage sind, aufgrund von Konformationsänderungen Volumenänderungen herbeizuführen. Solche Moleküle können beispielsweise ausgewählt werden aus der Gruppe der natürlichen oder synthetischen Heteropolymeren, insbesondere Peptiden oder Proteinen; natürlichen oder synthetischen Homopolymeren, insbesondere Polysacchariden.Finally, it is conceivable to use chemical changes in the state of a surface coating to increase the volume. In this context, it can be considered to use molecules which are able to bring about changes in volume due to changes in conformation. Such molecules can be selected, for example, from the group of natural or synthetic heteropolymers, in particular peptides or proteins; natural or synthetic homopolymers, especially polysaccharides.

Zur Erhöhung des scheinbaren Volumens kann die Oberfläche durch textiles Fasermaterial gebildet werden, welches beispielsweise durch Umspinnen einer Seele aufgebracht ist, wobei die Seele gemäß Anspruch 2 aus zugfestem Material ist. Dabei können die Außenfäden aus einem Material gewählt werden, welches den bekannten "Memory"-Effekt aufweist, derart, daß im entspannten "Endzustand" eine erhebliche Abweichung der Faserlängsachse von der Geraden vorliegt. So können beispielsweise gekräuselte Fasern als Außenfasern verwendet werden. Diese werden jedoch in gestreckter Form locker, also ohne Zugspannung und mit Spiel aufgebracht, und sodann durch Aktivierung des "Memory"-Effektes nach der Verarbeitung in ihre Kräuselform oder dergleichen überführt. Hierdurch erfolgt zwar keine tatsächliche Volumenänderung im strengen Sinn, jedoch eine scheinbare Volumenänderung, die makroskopisch betrachtet einer tatsächlichen Volumenänderung ähnlich ist. Hierauf kann insbesondere dann zurückgegriffen werden, wenn die Anforderungen an die Dichtigkeit nicht zu hoch sind oder vor allem erhöhte Fadenreibung im Stichloch erzeugt werden soll.To increase the apparent volume, the surface can be formed by textile fiber material, which is applied, for example, by spinning a core, the core being made of tensile material. The outer threads can be selected from a material which has the known "memory" effect, such that there is a considerable deviation of the longitudinal axis of the fiber from the straight line in the relaxed "final state". For example, crimped fibers can be used as the outer fibers. However, these are applied in a stretched form loosely, that is to say without tension and with play, and are then converted into their crimped shape or the like by activating the “memory” effect after processing. This does not result in an actual volume change in the strict sense, but an apparent volume change that is macroscopically similar to an actual volume change. This can be used in particular if the tightness requirements are not too high or, above all, increased thread friction is to be generated in the tap hole.

Wesentlich ist, daß der Faden im nicht-expandierten Zustand verarbeitet wird, und anschließend die Volumenvergrößerung stattfindet, wenn der Faden in der Naht verarbeitet ist. Hierzu kann ggfs. eine Aktivierung auch vor der Verarbeitung erfolgen, wenn diese erst entsprechend verzögert zur Expandierung führt.It is essential that the thread is processed in the unexpanded state, and the volume is subsequently increased when the thread is processed in the seam. For this purpose, activation may also take place before processing if this leads to expansion only after a corresponding delay.

Dieliaßnahmen der Ansprüche 3 und 4 weisen den Vorteil auf, daß eine Vielzahl von Vorläufermaterialien zur Verfügung steht, welche physikalisch und/oder chemisch in die jeweiligen Produkte umgewandelt werden können, wobei die Produkte die Eigenschaften aufweisen, ihr Volumen gegenüber den Vorläufermaterialien zu vergrößern bzw. dem Nähfaden eine gute Haftwirkung an dem Nähgut zu verleihen.The measures of claims 3 and 4 have the advantage that a large number of precursor materials are available which can be converted physically and / or chemically into the respective products, the products having the properties of increasing or increasing their volume compared to the precursor materials. to give the sewing thread a good adhesive effect on the sewing material.

Darüber hinaus kann eine physikalische Umwandlung jedoch auch darin bestehen, unlösliche Materialien, beispielsweise Stärke, in ein lösliches Produkt, z.B. durch Erwärmen, umzuwandeln, welches dann die gewünschten Eigenschaften Haftwirkung, Dichtfähigkeit und/oder Quellfähigkeit aufweist.In addition, however, a physical conversion can also consist of converting insoluble materials, e.g. starch, into a soluble product, e.g. by heating, which then has the desired properties of adhesive action, sealability and / or swellability.

Durch die zusätzlichen Hilfsstoffe gemäß Anspruch 5 ist es zum einen möglich, eine chemische Aktivierungsbehandlung der Vorläufermaterialien, etwa eine Polymerisation, also eine Verlängerung der Molekülketten herbeizuführen. Eine derartige Polymerisation führt mit den erfindungsgemäßen Materialien in der Regel - neben der Haftwirkung - zu Volumenvergrößerungen.The additional auxiliaries make it possible, on the one hand, to bring about a chemical activation treatment of the precursor materials, for example a polymerization, that is to say an extension of the molecular chains. With the materials according to the invention, such a polymerization generally leads - in addition to the adhesive effect - to volume increases.

Zum anderen ist es mit den Hilfsstoffen gemäß Anspruch 5 möglich, weitere Eigenschaften, wie beispielsweise Plastizität, Geschmeidigkeit, Gleitfähigkeit, Restwassergehalt usw. einzustellen.On the other hand, it is possible with the auxiliaries according to claim 5 to set further properties, such as, for example, plasticity, suppleness, lubricity, residual water content, etc.

In besonders bevorzugter Weise wird gemäß Anspruch 6 die Haftwirkung nach einer Zeitspanne von höchstens einigen Tagen an freien Oberflächen des Fadens deaktiviert. Dadurch wird erreicht, daß bei der bestimmungsgemäßen Benutzung des vernähten Flächengebildes eine oberflächenseitige Klebrigkeit im Bereich der Naht nicht auftritt, sondern dort eine entsprechende Abbindung der Oberfläche erfolgt ist, so daß diese keine erhöhte Haftwirkung mehr aufweist. Je nach den Erfordernissen der Fertigung kann es jedoch vorteilhaft sein, die Zeitspanne für die Deaktivierung erheblich geringer anzusetzen, so beispielsweise nur einige Minuten oder gar Sekunden, um sofort anschließend eine Behinderung der weiteren Arbeitsvorgänge durch eine Klebrigkeit der Naht nach außen hin auszuschließen. In jedem Falle hält die Haft-oder Klebewirkung aber in den Bereichen an, in denen die Oberfläche des Fadens an anderen Fadenoberflächen oder an Oberflächen des vernähten Flächengebildes anliegt, so daß dort die Haft- oder Klebewirkung unverändert bzw. nach Abbindung verstärkt aufrechterhalten wird.In a particularly preferred manner, the adhesive effect becomes after a period of at most a few days deactivated on free surfaces of the thread. This ensures that when the sewn fabric is used as intended, there is no stickiness on the surface in the area of the seam, but there is a corresponding bonding of the surface so that it no longer has an increased adhesive effect. Depending on the production requirements, however, it can be advantageous to set the time period for the deactivation to be considerably shorter, for example only a few minutes or even seconds, in order to then immediately rule out further hindrance to further work processes due to stickiness of the seam to the outside. In any case, however, the adhesive or adhesive effect persists in the areas in which the surface of the thread is in contact with other thread surfaces or with the surfaces of the sewn fabric, so that the adhesive or adhesive effect is maintained there unchanged or increased after setting.

Ein vorteilhaftes System ist ein solches gemäß Anspruch 7. Hier wird Acrylamid als Vorläufermaterial eingesetzt, welches zusätzlich die Quervernetzer Methylenbisacrylamid und N,N,N',N'-Tetramethylethylendiamin sowie den Weichmacher Glycerol als Hilfsstoffe enthält.An advantageous system is one according to claim 7. Here acrylamide is used as the precursor material, which additionally contains the crosslinking agents methylenebisacrylamide and N, N, N ', N'-tetramethylethylenediamine and the plasticizer glycerol as auxiliaries.

Ein mit einem derartigen Vorläufermaterial versehener Nähfaden weist den Vorteil auf, daß das Acrylamid leicht, z.B. mit UV-Licht und/oder Peroxiden zu Polyacrylamid polymerisiert werden kann. Nach dem Nähen verliert der Faden im Laufe von einem oder mehreren Tagen an Wasser. Das Glycerol hält jedoch einen Restwassergehalt zurück, so daß der Nähfaden nach Vernähen, beispielsweise zu einer Kettenstichnaht, eine plastische Konsistenz erhält, wodurch er relativ klebrig wird und somit gut an Nähgut und Stichloch haftet. Wird die so erhaltene Naht dann im fertigen Textil einer erhöhten Feuchtigkeit ausgesetzt, zum Beispiel einem Regenguß, so quillt das Polyacrylamidgel durch Wasseraufnahme wieder derart auf, daß die Nadelstichlöcher von dem Polymer ausgefüllt werden, wodurch diese wasserdicht verschlossen werden. Somit steht erfindungsgemäß quasi eine "intelligente Naht" zur Verfügung, welche reversibel in besonders feuchter Umgebung aufquillt und in trockener Umgebung wieder schrumpft - ohne jedoch ihre gute Haftung am Nähgut einzubüßen.A sewing thread provided with such a precursor material has the advantage that the acrylamide can easily be polymerized to polyacrylamide, for example with UV light and / or peroxides. After sewing, the thread loses water in one or more days. However, the glycerol retains a residual water content, so that after sewing, for example to form a chain stitch seam, the sewing thread obtains a plastic consistency, which makes it relatively sticky and thus adheres well to the sewing material and the stitch hole. If the seam thus obtained is then exposed to increased moisture in the finished textile, for example a downpour, the polyacrylamide gel swells again as a result of water absorption that the pinholes are filled by the polymer, whereby they are sealed watertight. Thus, according to the invention, an "intelligent seam" is available, which swells reversibly in a particularly moist environment and shrinks again in a dry environment - without, however, losing its good adhesion to the sewing material.

Eine ähnliche Wirkung läßt sich erreichen, wenn man kaltwasserunlösliche Stärken, insbesondere Kartoffelstärken, als Vorläufermaterial einsetzt, diese durch Wärmeeinwirkung nach dem Nähvorgang, beispielsweise durch Wasserdampf, in Lösung bringt - gegebenenfalls vor Verarbeitung mit bakteriziden oder fungiziden Mitteln zum Schutz vor mikrobiologischer Zersetzung versetzt - wodurch sich ein Polysaccharidfilm auf dem Nähfaden und in der Umgebung des Stichloches ausbildet. Dieser Film hat ähnlich wie ein Tapetenkleister die Eigenschaft zu kleben und analog zu dem Polyacrylamid-System ist er in der Lage reversibel Wasser aufzunehmen und zu quellen.A similar effect can be achieved if starch insoluble in cold water, in particular potato starches, is used as the precursor material, which is brought into solution by the action of heat after the sewing process, for example by means of steam, if necessary before being mixed with bactericidal or fungicidal agents to protect against microbiological decomposition, thereby a polysaccharide film forms on the sewing thread and in the vicinity of the tap hole. Similar to a wallpaper paste, this film has the property of sticking and analogously to the polyacrylamide system, it is able to reversibly absorb and swell water.

Textilien, welche mit einer derartigen Naht vernäht sind, können auch mit Temperaturen von etwa 40°C bis 60°C gewaschen werden, ohne daß das Stärke-Vorläufermaterial herausgelöst wird, da dieses eine kaltwasserunlösliche Stärke umfaßt, die in dem angebenen Temperaturbereich noch nicht löslich ist.Textiles which are sewn with such a seam can also be washed at temperatures of about 40 ° C. to 60 ° C. without the starch precursor material being removed, since this comprises a starch which is insoluble in cold water and which is not yet soluble in the specified temperature range is.

Die Ansprüche 8 bis 11 betreffen ein nähfähiges Flächengebilde, welches mit einem erfindungsgemäßen Nähfaden vernäht ist.The claims 8 to 11 relate to a sewable sheet which is sewn with a sewing thread according to the invention.

Als Material für die zu verbindenden flächigen Stoffe kommen grundsätzlich alle fluiddicht ausgerüsteten textilen Flächengebilde sowie Folien usw. wie etwa auch Papier, Leder und dergleichen in Frage. Besonders bevorzugt sind jedoch naturidentische Stoffe, deren Entsorgung problemlos ist bzw. die bei der Entsorgung etwa durch Verwendung als Futtermittel oder dergleichen zusätzlichen Nutzen haben. In diesem Sinne besonders geeignet sind textile Flächengebilde auf der Basis von organischen, nachwachsenden Fasern wie Flachs, Leinen oder auch Seegras oder dergleichen, die in jeder beliebigen Weise verarbeitet und fluiddicht gemacht werden können. Eine Möglichkeit der fluiddichten Abdichtung ohne eine Verwendung künstlicher Stoffe ist beispielsweise eine Abdichtung mit Bienenwachs.As a material for the flat materials to be bonded, all fluid-tight textile fabrics and foils etc., such as paper, leather and the like, can be used. However, nature-identical substances are particularly preferred, the disposal of which is problem-free or those which are disposed of, for example, by use as animal feed or the like have additional benefits. In this sense, textile fabrics based on organic, renewable fibers such as flax, linen or seaweed or the like, which can be processed in any manner and made fluid-tight, are particularly suitable. One possibility of fluid-tight sealing without the use of artificial substances is, for example, sealing with beeswax.

Häufig wird es zur vollständigen Abdichtung auch zwischen den miteinander zu verbindenden Stofflagen erforderlich sein, ein Kederband oder dergleichen mit einlaufen zu lassen und an der Nahtstelle zu vernähen. Dieses kann aus demselben Material wie das Material des Nähfadens bestehen und somit im Anschluß an die Verarbeitung z.B. ebenfalls expandiert werden, um zusätzlichen Dichtdruck zu erzeugen. Ggfs. kann dieses Kederband aber auch aus einem anderen, insbesondere weichelastischen Material bestehen, welches beim Nähvorgang komprimiert wird und auf diese Weise den Dichtdruck erzeugt. In Frage kommen insoweit Kederbänder aus Latex, Weichgummi oder dergleichen.Often, for complete sealing, it will also be necessary to allow a piping tape or the like to run in between the layers of fabric to be connected and sewn at the seam. This can consist of the same material as the material of the sewing thread and thus, after processing e.g. can also be expanded to generate additional sealing pressure. If necessary. However, this piping band can also consist of another, in particular soft, elastic material which is compressed during the sewing process and in this way generates the sealing pressure. Keder tapes made of latex, soft rubber or the like are possible.

Der Erfindung der Ansprüche 2 bis 7 kommt über die Verwendung bei selbstdichtenden Nähten hinaus weitere Bedeutung zu.The invention of claims 2 to 7 is of further importance beyond the use in self-sealing seams.

So ermöglicht die Expansion des Nähfadens nach der Verarbeitung eine drastische Erhöhung der Reibung des Fadens im Stichloch, und damit eine Selbsthaltewirkung bei unterbrochenem Fadenlauf. Dies kann vor allem dazu genutzt werden, Kettenstichnähte in wesentlich vergrößertem Umfang zu verwenden, ohne Gefahr zu laufen, daß eine nicht vollständige Verankerung des Kettenfadens oder ein Bruch des Kettenfadens zu einem Aufgehen der ganzen Naht führt. Im Falle eines solchen Fadenbruches halten die benachbarten Stichlöcher den Faden fest und vermeiden so, daß der Faden freikommt und die Naht gänzlich aufgeht. Da Kettenstichnähte bekanntlich ohne Spulfaden erzeugt werden, entfällt die Notwendigkeit der Zuführung eines Spulfadens, der in sehr begrenzter Länge auf der Spule aufgewickelt ist und daher zu häufigen Unterbrechungen des Nähvorganges zum Zwecke des Spulenwechsels führt. Dieser Selbsthemm- bzw. Selbsthalteeffekt des erfindungsgemäßen Nähfadens im Rahmen einer Kettenstichnaht eröffnet somit den produktionstechnisch günstigeren Kettenstichnähten erheblich weitergehende Anwendungsgebiete als bisher.The expansion of the sewing thread after processing enables a drastic increase in the friction of the thread in the tap hole, and thus a self-holding effect when the thread path is interrupted. This can be used above all to use chain stitch seams to a substantially larger extent without running the risk that an incomplete anchoring of the chain thread or a break in the chain thread will cause the entire seam to open. In the event of such a thread break, the adjacent stitch holes hold the thread and thus prevent the thread from being released and the Seam opens completely. Since chain stitch seams are known to be produced without a bobbin thread, there is no need to feed a bobbin thread that is wound on the bobbin in a very limited length and therefore leads to frequent interruptions in the sewing process for the purpose of changing the bobbin. This self-locking or self-holding effect of the sewing thread according to the invention in the context of a chain stitch seam thus opens up the chain stitch seams, which are more favorable in terms of production technology, than in the past.

Insofern läßt sich also mit dem nach dem Nähen volumenvergrößerten, beispielsweise quellenden Faden ein ähnlicher Vorteil hinsichtlich der breiteren Anwendbarkeit bzw. der Vermeidung von Nachteilen von Kettenstichnähten erreichen, wie mit dem Nähfaden mit einer Oberfläche erhöhter Haftwirkung. Selbstverständlich ist die kombinierte Anwendung beider Maßnahmen, also einer Oberflächenvergrößerung und einer Erhöhung der Haftwirkung, insbesondere Klebewirkung, von besonderem Vorteil, da nicht nur die Haltewirkung des Fadens der Kettenstichnaht an den Stichverknüpfungen bzw. in den Stichlöchern dadurch weiter erhöht wird, sondern darüber hinaus auch die Verklebung des Nähfadens einen zusätzlichen Beitrag zur Dichtheit leistet. Eine Dichtheit gegenüber Wasserdurchtritt kann insbesondere dadurch unterstützt werden, daß der klebefähige Faden hydrophobiert wird. Umgekehrt kann aber auch sowohl der Nähfaden mit der Oberfläche erhöhter Haftwirkung wie auch der quellfähige Nähfaden in einer Steppnaht verwendet werden, wenn diese im Einzelfall gewünscht oder erforderlich sein sollte. Die Quellfähigkeit führt auch im Rahmen einer Steppnaht zu einer entsprechenden Abdichtung, während die Klebewirkung die Verankerung auch der Steppnaht noch weiter erhöht; dies kann etwa von Interesse sein, wenn ein mit einer solchen Naht versehenes Gebilde in viele kleine Gebilde unterteilt werden soll, die jeweils von einer kurzen Strecke der Naht gehalten werden sollen.In this respect, the volume increased after sewing, for example swelling thread, can achieve a similar advantage with regard to the wider applicability or the avoidance of disadvantages of chain stitch seams, as with the sewing thread with a surface with an increased adhesive effect. Of course, the combined use of both measures, i.e. increasing the surface area and increasing the adhesive effect, in particular adhesive effect, is of particular advantage since not only the holding effect of the thread of the chain stitch seam on the stitch links or in the stitch holes is thereby further increased, but also also the gluing of the sewing thread makes an additional contribution to the tightness. A tightness against water penetration can be supported in particular by making the adhesive thread hydrophobic. Conversely, however, both the sewing thread with the surface with an increased adhesive effect and the swellable sewing thread can be used in a quilted seam if this should be desired or required in the individual case. The ability to swell also leads to a corresponding seal in the context of a quilting seam, while the adhesive effect further increases the anchoring of the quilting seam; this can be of interest, for example, if a structure provided with such a seam is divided into many small structures should be held by a short distance of the seam.

Auch bei der Verwendung einer Naht mit Spulfaden jedoch ergibt sich ein Vorteil dadurch, daß durch die vor der verarbeitung verminderte Fadendicke eine erheblich größere Fadenlänge auf der Spule gespeichert werden kann, und so die Anzahl der Betriebsunterbrechungen vermindert werden kann. Dennoch liegt der Faden nach der Verarbeitung, also in Benutzung, in einer gewünschten höheren Fadendicke vor, die zur Erzielung eines günstigen Ausreißverhaltens oder aus sonstigen Gründen gewünscht wird.However, even when using a seam with bobbin thread, there is an advantage in that a considerably greater thread length can be stored on the bobbin due to the reduced thread thickness prior to processing, and the number of interruptions in operation can thus be reduced. Nevertheless, after processing, that is to say in use, the thread is present in a desired higher thread thickness, which is desired in order to achieve favorable pull-out behavior or for other reasons.

Die Seele des Fadens kann aus jedem geeigneten zugfesten Material bestehen, welches mit dem Material der expandierbaren Oberflächenschichten kompatibel ist. So kann als Material für die Seele Baumwolle, Kevlar, Kohlefasern oder Glasfilament verwendet werden. Die Seele braucht jedoch grundsätzlich nicht aus einem gegenüber den Oberflächenschichten unterschiedlichen Material bestehen, so lange sichergestellt ist, daß der Expansionseffekt auf die Oberflächenschichten beschränkt ist.The core of the thread can consist of any suitable tensile material that is compatible with the material of the expandable surface layers. For example, cotton, kevlar, carbon fibers or glass filament can be used as the material for the soul. However, the soul does not fundamentally need to be made of a different material than the surface layers, as long as it is ensured that the expansion effect is limited to the surface layers.

Beispiel 1example 1

Zur Herstellung einer wenigstens spritzwasserdichten Naht wird ein handelsüblicher Nähfaden durch eine wäßrige Lösung eines Silikonharzes als Vorläufermaterial geführt. Als Silikonharz dient hierbei handelsübliches Silikonharz MK der Wacker-Chemie AG. Nachdem der Nähfaden das Tauchbad oder einen mit der Silikonharzlösung getränkten Schwamm passiert hat, wird er der Nähvorrichtung zugeführt und beispielsweise Teile einer Motorradkleidung als Nähgut mittels dieses Fadens vernäht.To produce an at least splash-proof seam, a commercially available sewing thread is passed through an aqueous solution of a silicone resin as the precursor material. Commercial silicone resin MK from Wacker-Chemie AG is used as the silicone resin. After the sewing thread has passed the immersion bath or a sponge soaked with the silicone resin solution, it is fed to the sewing device and, for example, parts of a motorcycle clothing are sewn as sewing material by means of this thread.

Die so entstandene Naht wird dadurch einer Aktivierungsbehandlung unterzogen, daß ein handelsüblicher Härter in wäßriger Lösung, im Beispielsfalle eine aluminumorganische Verbindung, unter dem Namen F100% der Wacker-Chemie im Handel erhältlich, mittels einer Sprühdüse auf die frische Naht aufgebracht wird. Durch die Zugabe des Härters auf die Naht wandelt sich das Vorläufermaterial-Silikonharz in ein Hochpolymersilikonharz um, welches zum einen der Naht eine erhöhte Haftung am Nähgut verleiht und zum anderen die Nadeleinstichstellen der Naht im wesentlichen wasserdicht macht, wobei hier neben der Expansionswirkung die Klebeabdichtung im Vordergrund steht.The resulting seam is subjected to an activation treatment in that a commercially available hardener in aqueous solution, in the example an organoaluminum compound, commercially available under the name F100% of Wacker-Chemie, is applied to the fresh seam using a spray nozzle. By adding the hardener to the seam, the precursor silicone resin is converted into a high-polymer silicone resin, which on the one hand gives the seam increased adhesion to the material to be sewn and on the other hand makes the needle insertion points of the seam essentially watertight, whereby in addition to the expansion effect, the adhesive seal in the The foreground is.

Hierbei resultiert die Wasserdichtheit im wesentlichen aus der Klebeeige-schaft des Silikonharzes, welches den Faden im Stichloch ummantelt und dann abbindet bzw. vernetzt und sowohl am Nähfaden als auch am Nähgut haftet.The watertightness essentially results from the adhesive properties of the silicone resin, which coats the thread in the tap hole and then sets or cross-links and adheres to both the sewing thread and the material.

Beispiel 2Example 2

Ein handelsüblicher Nähfaden, beispielsweise ein Baumwollfaden, wird wie in Beispiel 1 durch eine wäßrige Lösung eines Copolymerisates aus Vinylchlorid und Vinylacetat sowie einem Weichmacher, im Beispielsfalle Diphenylphthalat, geführt. Anschließend führt man den derart getränkten Faden einer Nähvorrichtung, im Beispielsfalle einer handelsüblichen Industrienähmaschine, zu.A commercially available sewing thread, for example a cotton thread, is passed as in Example 1 through an aqueous solution of a copolymer of vinyl chloride and vinyl acetate and a plasticizer, in the example of diphenyl phthalate. Then the thread so impregnated is fed to a sewing device, in the example of a commercially available industrial sewing machine.

Dabei dient das Copolymerisat aus Vinylchlorid und Vinylacetat in Form einer wäßrigen Dispersion mit Cellulose als Stabilisator als Vorläufermaterial und im Beispielsfalle wird hierzu Vinnol-Dispersion 50/25C, welche von der Wacker-Chemie AG vertrieben wird, verwendet. Auf der Nähmaschine wird eine Regenkleidung aus einem Kunststoffmaterial mit dem erfindungsgemäßen Nähfaden als Kettenstichnaht vernäht. Anschließend wird die Naht für eine kurze Zeit einer Hochfrequenzbehandlung als Aktivierungsbehandlung, insbesondere einer Mikrowellenbehandlung, ausgesetzt. Hierbei ist es vorteilhaft, wenn man der Dispersion zusätzliche Mikrowellenabsorber wie Ruß, Graphit oder leitende Metalloxide oder dgl. zusetzt. Durch diese Art der Aktivierungsbehandlung wird das Vorläufermaterial, im Beispielsfalle das Copolymerisat aus Vinylacetat und Vinylchlorid in ein Produkt umgewandelt, welches gute Klebeeigenschaften sowie Abdichtungseigenschaften aufweist, wodurch die Nadeleinstichstellen der Naht zumindest spritzwasserdicht gemacht werden, so daß beispielsweise ein Motorradfahrer, der eine derartige Regenkleidung trägt, nicht befürchten muß, daß an den Nadeleinstichstellen Wasser durchdringt.The copolymer of vinyl chloride and vinyl acetate in the form of an aqueous dispersion with cellulose as stabilizer serves as the precursor material and in the example case Vinnol dispersion 50 / 25C, which is sold by Wacker-Chemie AG, is used for this purpose. A rainwear made of a plastic material is sewn on the sewing machine with the sewing thread according to the invention as a chain stitch seam. Subsequently the seam is subjected to a high-frequency treatment as an activation treatment, in particular a microwave treatment, for a short time. It is advantageous here if additional microwave absorbers such as carbon black, graphite or conductive metal oxides or the like are added to the dispersion. This type of activation treatment converts the precursor material, in the example the copolymer of vinyl acetate and vinyl chloride, into a product which has good adhesive properties and sealing properties, as a result of which the needle insertion points of the seam are at least made splash-proof, so that, for example, a motorcycle rider wearing such rainwear , do not have to fear that water penetrates at the needle insertion points.

Beispiel 3Example 3

Ein handelsüblicher Baumwollnähfaden wird während der Verarbeitung zu einer Naht durch eine wäßrige Lösung eines Acrylamids sowie der Hilfsstoffe Methylenbisacrylamid und N,N,N',N'-Tetramethylethylendiamin als quervernetzende Hilfsstoffe sowie Glycerol als Weichmacher geführt.A commercially available cotton sewing thread is led during the processing to a seam through an aqueous solution of an acrylamide and the auxiliaries methylenebisacrylamide and N, N, N ', N'-tetramethylethylenediamine as crosslinking auxiliaries and glycerol as a plasticizer.

Der so behandelte Nähfaden wird dann einer Industrienähmaschine zugeführt und das zu verarbeitende Nähgut wird mit diesem Faden in einer Kettenstichnaht vernäht.The sewing thread treated in this way is then fed to an industrial sewing machine and the material to be processed is sewn with this thread in a chain stitch seam.

Dann wird eine Aktivierungsbehandlung dadurch durchgeführt, daß eine wäßrige Lösung von Ammoniumperoxid auf die Naht aufgesprüht wird und zusätzlich mit einer UV-Lampe beleuchtet wird.An activation treatment is then carried out by spraying an aqueous solution of ammonium peroxide onto the seam and additionally illuminating it with a UV lamp.

Durch diese Aktivierungsbehandlung wird das Acrylamid bzw. etwa vorhandene Acrylamidoligomere unter Quervernetzung mit Methylenbisacrylamid und N,N,N',N'-Tetramethylethylendiamin zu einem gelartigen Polymer-Produkt umgewandelt. Ein derartiges Polymer-Produkt verleiht zum einen dem Nähfaden eine gute Haftung an dem Nähgut im Bereich der Stichlöcher und zum anderen liegt mit diesem System eine "intelligente Naht" vor, da das Nahtmaterial zunächst bei Umgebungstemperatur in relativ trockener Umgebung Wasser verlieren wird, was jedoch nur bis zu einem gewissen Grad möglich ist, da das Glycerin neben seiner Eigenschaft als Weichmacher auch noch als Wasserrückhalter wirkt, wodurch sich eine insgesamt plastische Konsistenz sowie eine gute Haftwirkung des Nähfadens am Nähgut ergibt. Kommt nun beispielsweise ein Motorradfahrer, dessen Regenkleidung mit dem erfindungsgemäßen Nähfaden vernäht ist, in den Regen, so quillt der Nähfaden bis zum 10-fachen seines ursprünglichen Volumens im trockenen Zustand auf, wodurch sich durch die starke Expansion in den Nadelstichstellen eine besonders gute Abdichtung ergibt, so daß das Regenwasser nicht durch die Nahtlöcher dringen kann.Through this activation treatment, the acrylamide or any acrylamide oligomers present are crosslinked with methylenebisacrylamide and N, N, N ', N'-tetramethylethylenediamine converted to a gel-like polymer product. Such a polymer product on the one hand gives the sewing thread good adhesion to the sewing material in the area of the stitch holes and on the other hand there is an "intelligent seam" with this system, since the suture material will initially lose water at ambient temperature in a relatively dry environment, which, however is only possible to a certain extent because, in addition to its property as a plasticizer, the glycerin also acts as a water retainer, resulting in an overall plastic consistency and a good adhesive effect of the sewing thread on the material. If, for example, a motorcycle rider whose rainwear is sewn with the sewing thread according to the invention comes into the rain, the sewing thread swells up to 10 times its original volume in the dry state, which results in a particularly good seal due to the strong expansion in the needle stitch points , so that the rainwater cannot penetrate through the seam holes.

Sobald die Naht wieder der normalen Umgebungsluftfeuchtigkeit ausgesetzt ist, verliert sie wieder Wasser und schrumpft hierdurch wieder - ohne jedoch die Haftwirkung einzubüßen -, so daß der Ausgangszustand im wesentlichen wieder hergestellt ist, wobei bei erneuter Wasserexposition der Nähfaden wieder aufquillt. Dies bedeutet, daß hier ein reversibler Wasserabgabe-Wasseraufnahmezyklus existiert, der die Abdichtung der Nahtstichstellen sowie die Haftung des Nähfadens am Nähgut gewährleistet.As soon as the seam is again exposed to the normal ambient air humidity, it loses water again and thereby shrinks again - without losing the adhesive effect - so that the initial state is essentially restored, the sewing thread swelling again when exposed to water again. This means that there is a reversible water release / water absorption cycle that ensures the sealing of the seam stitches and the adhesion of the sewing thread to the material.

Selbstverständlich kann mit der vorliegenden Erfindung auch großtechnisch ein erfindungsgemäßer Nähfaden hergestellt werden, wobei der Rohfaden mit einer lösung aus der in der Technik üblichen Avivage unter zusatz der erfindungsgemäßen Vorläufermaterialien und/oder Hilfsstoffe imprägniert wird.Of course, the present invention can also be used to manufacture a sewing thread according to the invention on an industrial scale, the raw thread being impregnated with a solution from the finishing agent customary in technology with the addition of the precursor materials and / or auxiliary substances according to the invention.

Dabei ist es auch hier möglich, Mikrowellenabsorber, wie beispielsweise Graphit, Ruß oder leitende Metalloxide zu der Avivage zuzugeben, so daß die Umwandlung des Vorläufermaterials zu dem Produkt mit den gewünschten Eigenschaften bevorzugt durch Mikrowellenabsorption durchgeführt werden kann.It is also possible here to add microwave absorbers, such as graphite, carbon black or conductive metal oxides Add softening agent so that the conversion of the precursor material to the product with the desired properties can preferably be carried out by microwave absorption.

Weitere Vorteile und Merkmale der vorliegenden Erfindung ergeben sich aufgrund der Beschreibung eines weiteren Ausführungsbeispiels sowie anhand der Zeichnung.Further advantages and features of the present invention result from the description of a further exemplary embodiment and from the drawing.

Es zeigt:

Fig. 1
einen Längsschnitt eines Teiles einer Vorrichtung zur Durchführung des erfindungsgemäßen Verfahrens; und
Fig. 2
die Draufsicht eines Teiles einer Vorrichtung zur Durchführung des erfindungsgemäßen Verfahrens.
It shows:
Fig. 1
a longitudinal section of part of an apparatus for performing the method according to the invention; and
Fig. 2
the top view of part of a device for performing the method according to the invention.

In den Fig. 1 und 2 ist mit 1 die sogenannte Stichplatte einer nicht näher gezeigten Industrienähmaschine in Längsschnittdarstellung bzw. Draufsicht gezeigt. Dabei wird das Nähgut in Pfeilrichtung transportiert. Ein Preßfuß 2 drückt dabei das nicht gezeigte Nähgut gegen einen Untertransport 3, so daß sich eine Bewegung des Nähgutes in Pfeilrichtung gemäß Fig. 1 ergibt. Eine Nadel 4 der Industrienähmaschine bringt einen nicht gezeigten Nähfaden durch das Nähgut, wobei die Nadel 4 die Stichplatte 1 über ein Stichloch 5 durchdringt. Dabei ergibt sich insgesamt aufgrund der vorbestimmten Nadelbewegung und/oder Transport und/oder Fadenzuführung die Art der gewünschten Naht, beispielsweise eine Kettenstichnaht.1 and 2, the so-called throat plate of an industrial sewing machine, not shown in detail, is shown in longitudinal section or plan view at 1. The sewing material is transported in the direction of the arrow. A press foot 2 presses the material not shown against an underfeed 3, so that there is a movement of the material in the direction of the arrow shown in FIG. 1. A needle 4 of the industrial sewing machine brings a sewing thread, not shown, through the material to be sewn, the needle 4 penetrating the stitch plate 1 via a stitch hole 5. Overall, the type of seam desired, for example a chain stitch seam, results from the predetermined needle movement and / or transport and / or thread feeding.

Wird nun beispielsweise ein mit einer Dispersion einer kaltwasserunlöslichen Stärke beaufschlagter Faden der Nadel 4 zugeführt, so wird die entstehende Naht in Richtung auf eine Austrittsöffnung 6 geführt. Dieser Austrittsöffnung wird über eine Leitung 7 im Beispielsfalle Wasserdampf zugeführt, wodurch die kaltwasserunlösliche Stärke als Vorläufermaterial zu einem Produkt klebriger Konsistenz umgewandelt wird. Das Produkt verleiht dabei der Naht eine erhöhte Haftung am Nähgut und dichtet gleichzeitig die Nadeleinstichstellen der Naht so ab, daß diese im wesentlichen wasserdicht gemacht werden. Darüber hinaus kann das entstehende Stärkeprodukt nach seiner Trocknung noch Wasser aufnehmen, beispielsweise in einer Regenkleidung für Motorradfahrer, wodurch der Nähfaden der Naht aufquillt und hierdurch die Nadeleinstichstellen in dem Nähgut durch Expansion besonders gut abdichtet.If, for example, a thread loaded with a dispersion of a starch insoluble in cold water is now fed to the needle 4, the resulting seam is guided in the direction of an outlet opening 6. This exit opening will Steam is supplied via a line 7 in the example, whereby the starch, which is insoluble in cold water, is converted as a precursor material to a product of a sticky consistency. The product gives the seam increased adhesion to the material to be sewn and at the same time seals the needle insertion points of the seam so that they are made essentially watertight. In addition, the resulting starch product can still absorb water after it has been dried, for example in rainwear for motorcyclists, as a result of which the sewing thread swells up and thereby seals the needle insertion points in the material particularly well through expansion.

Im Beispielsfalle kann der entstandene überschüssige Wasserdampf über eine Dampfabsaugung 8 abgeleitet werden.In the example case, the excess water vapor produced can be discharged via a steam suction 8.

Es ist jedoch auch selbstverständlich möglich, die Austrittsöffnung 6 beispielsweise noch mit einer zusätzlichen Sprühdüse zu versehen, wodurch andere Hilfsstoffe, etwa solche, die eine Polymerisation eines auf den zu vernähenden Faden aufgebrachten Monomeren bewirken, wodurch sich ebenfalls die erwünschten Eigenschaften einstellen.However, it is of course also possible, for example, to provide the outlet opening 6 with an additional spray nozzle, as a result of which other auxiliaries, for example those which bring about a polymerization of a monomer applied to the thread to be sewn, also result in the desired properties.

Claims (19)

  1. A sewing thread, characterised in that at least the outer surface thereof is impregnated with at least one precursor material which can be activated after processing, and after activation the precursor material is converted to a product which increases the adhesion between the sewn material and a seam made with the said thread, and the activation excludes a foaming process.
  2. A sewing thread according to claim 1, characterised in that it has a core of tension-resistant material and/or the product is an adhesive.
  3. A sewing thread according to claim 1 or 2, characterised in that the precursor material is at least one physically and/or chemically activatable substance.
  4. A sewing thread according to any of claims 1 to 3, characterised in that the precursor material is selected from the group consisting of:
    silicone resins; alkyl silicone resins, methyl silicone resins; aryl silicone resins; copolymers of vinyl chloride and vinyl acetate; polysaccharides,
    polysaccharide products insoluble in cold water; esters of polysaccharides and inorganic acids, esters of polysaccharides and organic acids; polysaccharide ethers; starches, potato starches; esters of starches and inorganic acids, esters of starches and organic acids; starch ethers, nitrogen-containing starch ethers, cationic starch ethers, particularly salts thereof; acrylamides, N- and C-substituted acrylamides or acrylamide oligomers; and mixtures thereof.
  5. A sewing thread according to any of claims 1 to 4, characterised in that the thread contains additional adjuvants selected from the group consisting of:
    conventional finishes for threads; natural and synthetic waxes; paraffins; cross-linking agents for growing polymer chains, particularly methylene bis acrylamide or N,N,N',N'-tetramethyl ethylene diamine; plasticisers, particularly dibutyl phthalate, glycerol; inorganic fillers, organic fillers; activators; radical starters, peroxides, metal organyls, particularly aluminium organyls; and suitable mixtures thereof.
  6. A sewing thread according to any of claims 1 to 5, characterised in that the increased adhesive friction on exposed surfaces of the thread not in contact with the sewn material decreases after a period of not more than a few days, more particularly not more than a few minutes.
  7. A sewing thread according to any of claims 1 to 6, characterised in that the precursor material is acrylamide and
    the adjuvants are methylene bis acrylamide and N,N,N',N'-tetramethyl ethylene diamine and glycerol.
  8. A sewable flat fabric, comprising at least two parts for sewing together, characterised in that its seam is sewn with a thread according to at least one of claims 1 to 7.
  9. A flat fabric according to claim 8, characterised in that the seam is a chain-stitch seam.
  10. A flat fabric according to claim 8 or 9, characterised in that a sealing strip or the like is disposed between the parts in the region of the seam.
  11. A flat fabric according to claim 10, characterised in that the sealing strip is a textile made of the same material as the sewing thread.
  12. A method of producing at least splashproof seams, wherein
    a) a sewing thread, at least on its outer surface, is treated with a precursor material of a product, and
    b) the sewing thread is supplied to a sewing device and converted into a seam on a material for sewing,
    characterised in that
    c) the seam is activated by treatment which excludes treatment by foaming, wherein the precursor material is converted into the desired product, and wherein the product increases the adhesion of the seam to the sewn material.
  13. A method according to claim 12, characterised in that a stickv and/or sealing product is formed.
  14. A method according to claim 12 or 13, characterised in that the surface is continuously or discontinuously coated with the precursor material by spraying or immersion.
  15. A method according to any of claims 12 to 14, characterised in that step a) takes place after step b).
  16. A method according to any of claims 12 to 15, characterised in that the precursor material is selected from the group consisting of:
    silicone resins; alkyl silicone resins, methyl silicone resins; aryl silicone resins; copolymers of vinyl chloride and vinyl acetate; polysaccharides, polysaccharide products insoluble in cold water; esters of polysaccharides and inorganic acids, esters of polysaccharides and organic acids; polysaccharide ethers; starches, potato starches; esters of starches and inorganic acids, esters of starches and organic acids; starch ethers, nitrogen-containing starch ethers, cationic starch ethers, particularly salts thereof; acrylamides, N- and C-substituted acrylamides or acrylamide oligomers; inorganic expanded materials such as expanded pearlite, expanded mica or expanded graphite; and mixtures thereof.
  17. A method according to any of claims 12 to 16, characterised in that in step a) and/or c) additional adjuvants are used, selected from the group consisting of:
    conventional finishes for threads; natural and synthetic waxes, paraffins; cross-linking agents for growing polymer chains, particularly methylene bis acrylamide or N,N,N',N'-tetramethyl ethylene diamine; plasticisers, particularly dibutyl phthalate, glycerol; inorganic fillers, organic fillers; activators; radical starters, peroxides, metal organyls, particularly aluminium organyls; and suitable mixtures thereof.
  18. A method according to any of claims 12 to 17, characterised in that step c) comprises chemical and/or physical activation, particularly thermo-activation, hot sealing, high-frequency activation, activation with light, particularly UV light, chemical polymerisation, chemical hardening, radical starting; or combinations thereof.
  19. A method according to any of claims 12 to 18, characterised in that in step a) the precursor material is acrylamide, the cross-linking adjuvants are methylene bis acrylamide and N,N,N',N'-tetramethyl ethylene diamine and the plasticiser is glycerol, and
    in step c) activation is effected by application of aqueous peroxide solutions, particularly ammonium peroxide solutions, and/or UV illumination.
EP93909907A 1992-05-08 1993-05-06 Sewing thread, flat fabric sewed therewith and process for producing a splash-proof stitched seam Expired - Lifetime EP0639057B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4215176 1992-05-08
DE4215176A DE4215176C3 (en) 1992-05-08 1992-05-08 Sewing thread, hereby sewn fabric and method for producing a splash-proof seam
PCT/EP1993/001110 WO1993022943A2 (en) 1992-05-08 1993-05-06 Sewing thread, flat fabric sewed therewith and process for producing a splash-proof stitched seam

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EP0639057A1 EP0639057A1 (en) 1995-02-22
EP0639057B1 true EP0639057B1 (en) 1997-04-02

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DE4215176C3 (en) 1996-06-20
HUT69441A (en) 1995-09-28
ES2093551B1 (en) 1997-12-16
DE4244731A1 (en) 1994-04-21
CH685566A5 (en) 1995-08-15
BR9306332A (en) 1998-06-30
ATE151123T1 (en) 1997-04-15
EP0639057A1 (en) 1995-02-22
RU94046040A (en) 1997-02-27
CZ285416B6 (en) 1999-08-11
WO1993022943A2 (en) 1993-11-25
WO1993022943A3 (en) 1994-01-20
DE4215177A1 (en) 1993-11-11
HK1006317A1 (en) 1999-02-19
ES2093551A1 (en) 1996-12-16
DE59306045D1 (en) 1997-05-07
CZ273394A3 (en) 1996-05-15
DE4215176C2 (en) 1994-05-05
HU9403148D0 (en) 1995-02-28
KR950701195A (en) 1995-03-23
US5869182A (en) 1999-02-09
KR100263508B1 (en) 2000-08-01

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