DE19739592C2 - Liquid-tight, line-shaped joint connection for single- or multi-layer textile fabrics, as well as processes for their production - Google Patents

Liquid-tight, line-shaped joint connection for single- or multi-layer textile fabrics, as well as processes for their production

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Publication number
DE19739592C2
DE19739592C2 DE19739592A DE19739592A DE19739592C2 DE 19739592 C2 DE19739592 C2 DE 19739592C2 DE 19739592 A DE19739592 A DE 19739592A DE 19739592 A DE19739592 A DE 19739592A DE 19739592 C2 DE19739592 C2 DE 19739592C2
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Germany
Prior art keywords
seam
tight
liquid
frequency
polymer film
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Expired - Fee Related
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DE19739592A
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German (de)
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DE19739592A1 (en
Inventor
Maike Rabe
Hartmut Roedel
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Technische Universitaet Dresden
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Technische Universitaet Dresden
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Priority to DE19739592A priority Critical patent/DE19739592C2/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/04—Dielectric heating, e.g. high-frequency welding, i.e. radio frequency welding of plastic materials having dielectric properties, e.g. PVC
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D27/00—Details of garments or of their making
    • A41D27/24—Hems; Seams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
    • B29C65/5057—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like positioned between the surfaces to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B29C65/62—Stitching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/72—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by combined operations or combined techniques, e.g. welding and stitching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/133—Fin-type joints, the parts to be joined being flexible
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/135—Single hemmed joints, i.e. one of the parts to be joined being hemmed in the joint area
    • B29C66/1352—Single hem to hem joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/729—Textile or other fibrous material made from plastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/481—Non-reactive adhesives, e.g. physically hardening adhesives
    • B29C65/4815—Hot melt adhesives, e.g. thermoplastic adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4855—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by their physical properties, e.g. being electrically-conductive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
    • B29C66/7234—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a barrier layer

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)

Description

Die Erfindung betrifft eine flüssigkeitsdichte, linienförmige Fügeverbindung, die beim Verarbeiten von ein- oder mehrschichtigen, flüssigkeitsdichten textilen Flächengebilden entsteht. Die Erfindung betrifft außerdem ein Verfahren zur Herstellung einer solchen Verbindung.The invention relates to a liquid-tight, linear joint connection, which is used during processing of single or multi-layer, liquid-tight textile fabrics. The The invention also relates to a method for producing such a compound.

Beim Vernähen von Barrieretextilien, z. B. hydrophobierte oder beschichtete Gewebe oder Textillaminate, zur Herstellung von z. B. Zelten, Schutzbekleidung werden durch Perforation des Nähgutes und durch Stoßstellen der Flächengebilde im Fügebereich Undichtigkeitsstellen gegenüber Wasser und anderen Flüssigkeiten erzeugt.When sewing barrier textiles, e.g. B. hydrophobized or coated fabrics or Textile laminates, for the production of e.g. B. tents, protective clothing are perforated by the Sewing material and leaks due to joints of the flat structures in the joining area against water and other liquids.

Die Herstellung von flüssigkeitsdichten Nähten erfolgt derzeitig z. B. durch Überkleben des Nahtbereichs mit einem Heißsiegelband in einem zweiten Arbeitsschritt, was einerseits aufwendig ist und andererseits hohe Geschicklichkeit erfordert (GB 1 113 684 und 979 829). Die DE 36 21 743 A1 beschreibt ein ähnliches Verfahren, bei dem das Aufbringen des Heißsiegelbandes über der Naht jedoch unmittelbar nach der Stichbildung in einem Arbeitsgang erfolgt. Unter Praxisbedingungen (Tragegebrauch und häufige Wäsche) kommt es häufig zu Ablöseerscheinungen des Klebebandes.The production of liquid-tight seams is currently z. B. by pasting the Seam area with a heat seal tape in a second step, which is expensive on the one hand is and on the other hand requires high skill (GB 1 113 684 and 979 829). DE 36 21 743 A1 describes a similar process in which the application of the heat seal tape over the However, the seam is done immediately after stitch formation in one operation. Under Practical conditions (use and frequent washing) are common Detachment of the tape.

Abdichtungen von Nähten durch nachträglich auf die Naht aufgebrachte Dichtungsmittel auf Lösemittelbasis oder Silikonbasis sind praxisüblich. Aufgrund des hohen Aufwandes, der Geruchsbelästigung und der geringen Beständigkeit der Ausrüstungen ist dieses Verfahren technologisch und funktionell unzureichend.Sealing of seams by means of sealing agents applied subsequently to the seam Solvent-based or silicone-based are common practice. Because of the high effort that This process is odor nuisance and the low resistance of the equipment technologically and functionally inadequate.

An Kraftwagenverdecken wird die Nahtabdichtung durch Vernähen selbstklebender Foliestreifen realisiert (DE 27 51 162 A1), die aufgrund ihrer Elastizität den Faden nach dem Stichbildungsprozess umschließen. Eine Penetration des Polymerstreifens in die Stichlöcher wird durch dieses Verfahren nicht ermöglicht.The seam sealing on motor vehicle roofs is made by sewing self-adhesive film strips realized (DE 27 51 162 A1), the thread according to the elasticity Enclose stitch formation process. Penetration of the polymer strip into the stitch holes will occur not made possible by this procedure.

Die WO 92/05308 beschreibt eine Fügeverbindung von Barrieretextilien durch Aufschmelzen von thermoplastischen Bestandteilen des Flächengebildes. Dieses Verfahren führt zwar zu einer guten Nahtversiegelung, jedoch zeigen Praxisversuche mit vergleichbaren Barrieretextilien, daß insbesondere unter Scherbelastung die Schweißnähte keine ausreichende Höchstzugfestigkeit aufweisen.WO 92/05308 describes a joint connection of barrier textiles by melting  thermoplastic components of the fabric. This method leads to a good one Seam sealing, however practical tests with comparable barrier textiles show that especially under shear stress, the weld seams do not have sufficient maximum tensile strength exhibit.

In DE 32 09 054 A1 wird ebenfalls ein Verfahren zur Herstellung wasserdichter Nähte mittels Nähen und Schweißen beschrieben, das allerdings nur bei beschichteten Textilien zur Anwendung kommen kann.DE 32 09 054 A1 also describes a method for producing watertight seams Sewing and welding are described, but only for coated textiles can come.

In der DE 35 40 368 C1 wird ein weiteres Verfahren zur Herstellung haltbarer, flüssigkeitsdichter Verbindungen durch Kombination von Nähen und Kleben beschrieben. Das dazu nötige Siegelband ist aufgrund seiner dreidimensionalen Ausführung schwer handhabbar, nur für einfache Kantennähte zu verwenden und führt zudem zu hohen Nahtzugaben, die insbesondere für den Einsatz im Oberbekleidungsbereich den Tragekomfort erheblich reduzieren.DE 35 40 368 C1 describes a further process for producing durable, liquid-tight Connections described by combining sewing and gluing. The necessary Sealing tape is difficult to handle due to its three-dimensional design, only for simple ones Use edge seams and also leads to high seam allowances, especially for the Use in outerwear significantly reduces comfort.

Weiterhin ist ein Verfahren zur Nahtversiegelung bekannt, das durch Einlegen eines mit Dichtungsformmasse gefüllten Formkörpers aus Kunststoff- oder Gummifolie zwischen die Nähgutteile beim Vernähen realisiert wird (DE 40 25 291 A1). Wird der Schlauch beim Vernähen durchstochen, tritt Dichtungsmasse aus, die unter Umgebungsbedingungen vernetzt und die Stichlöcher abdichtet. Dieses Verfahren führt jedoch nur in geringem Maße zu einer Abdichtung der Hohlräume zwischen den einzelnen Nähgutlagen, so daß der Widerstand gegen das Durchdringen von Flüssigkeiten nicht ausreicht, um einen Flüssigkeitsdurchtritt vollständig zu verhindern.Furthermore, a method for seam sealing is known, which can be done by inserting a Sealing molding compound filled molded body made of plastic or rubber film between the Sewing material parts is realized when sewing (DE 40 25 291 A1). Will the hose when sewing punctured, sealant emerges, which crosslinks under ambient conditions and which Seals stitch holes. However, this method only leads to a small amount of sealing of the cavities between the individual layers of material, so that the resistance to the Penetration of liquids is not sufficient to completely allow liquid to pass through prevent.

Die DE 42 23 852 A1 basiert ebenfalls auf der Verwendung eines Dichtbandes, das Depotbehälter für die Dichtungsmasse enthält. Die erzeugten Nähte weisen nur Spritzwasserdichtigkeit auf.DE 42 23 852 A1 is also based on the use of a sealing tape, the depot container contains for the sealant. The seams produced are only splashproof.

Auch ein Verfahren, das zu einer Verklebung des Fügebereichs innerhalb einer Doppelkappnaht führt, ist bekannt. Hierbei wird eine Klebefolie während des Nähprozesses in den Fügebereich eingeführt, die anschließend durch Kontakthitze (Bügeln) aufgeschmolzen wird. Dieses Verfahren dient einer Reduzierung der Nahtkräuselung. Eine Erhöhung der Nahtdichtigkeit ist nicht beabsichtigt. Da ein großer Teil wasserabweisender Textilien, insbesondere Mikrofaserstoffe und Textillaminate aus thermoplastischen Faserstoffen bestehen, ist eine dichte, thermisch aktivierte Verklebung des Fügebereichs ohne Materialschädigung auf diesem Wege nicht möglich.This is also a process that results in the joining area being glued within a double lap seam is known. Here, an adhesive film is placed in the joining area during the sewing process introduced, which is then melted by contact heat (ironing). This method  serves to reduce the seam crimp. An increase in seam tightness is not intended. Since a large part of water-repellent textiles, in particular microfiber fabrics and Textile laminates made of thermoplastic fibers are dense, thermally activated It is not possible to glue the joint area without damaging the material.

Aus der DE 28 10 991 A1 ist es bekannt, zwei Kanten eines benachbarten textilen Flächengebil­ des, welche selbst mit einem durch Hochfrequenz aktivierbaren Material beschichtet sind, mit den beschichteten Seiten nach außen aufeinander zu legen und über die beschichteten Seiten ein Befestigungsstreifen zu legen, und zur Verschweißung der aneinanderliegenden beschichteten Seiten des Befestigungsstreifens und des Tuches die Naht der Einwirkung eines Radiofrequenz- Feldes auszusetzen. Diese Vorgehensweise erfordert die Anwendung von textilen Flächengebil­ den, die mit einem durch Hochfrequenz aktivierbaren Material beschichtet sind.From DE 28 10 991 A1 it is known to have two edges of an adjacent textile fabric des, which are themselves coated with a material that can be activated by radio frequency, with place the coated sides on top of each other and over the coated sides Fixing strips to lay, and for welding the adjacent coated Sides of the fastening strip and the cloth the seam of exposure to a radio frequency Suspend field. This procedure requires the use of textile fabrics those that are coated with a material that can be activated by radio frequency.

Die Aufgabe der Erfindung besteht nun darin, eine Fügeverbindung der eingangs genannten Art anzugeben, die beim Verbinden flüssigkeitsabweisender und flüssigkeitsdichter, ein- und mehrschichtiger Flächengebilde selbst flüssigkeitsdicht, leicht herstellbar und beständig ist sowie die zu verbindenden Flächengebilde bei der Herstellung nicht qualitätsmindernd beeinflußt.The object of the invention is now to provide a joint connection of the type mentioned specify which when connecting liquid-repellent and liquid-tight, one and multilayer sheet itself is liquid-tight, easy to manufacture and durable as well the fabric to be joined does not affect the quality during manufacture.

Erfindungsgemäß wird die Aufgabe mit einer die Merkmale des Anspruchs 1 aufweisenden Fügeverbindung gelöst. Die Unteransprüche beschreiben vorteilhafte Ausgestaltungen und Weiterbildungen. Die Aufgabe wird weiterhin durch ein Verfahren mit den im Anspruch 4 genannten Merkmalen gelöst. Vorteilhafte Verfahrensvarianten ergeben sich aus den zugehörigen Unteransprüchen.According to the invention, the object has the features of claim 1 Joint connection released. The subclaims describe advantageous configurations and Training. The object is further achieved by a method with the in claim 4 mentioned features solved. Advantageous process variants result from the associated Dependent claims.

Die Fügeverbindung weist zwischen den parallel verlaufenden Schnittkanten der ein- oder mehrschichtigen textilen Flächengebilde einen hochfrequenzreaktiven Polymer-Folienstreifen auf. Die Nahtfaden verlaufen durch den Polymer-Folienstreifen. Die textilen Flächengebilde sind selbst nicht hochfrequenzreaktiv, sofern sie aus nichtpolaren Faserstoffpolymeren bestehen. Durch eine angepaßte Wärmequelle geht nur der hochfrequenzreaktive Polymer-Folienstreifen in eine niedrigviskose Schmelzphase über, die praktisch in alle Hohlräume der Naht sowie in saugfähige Materialien eindringt, und nach dem Abkühlen den Nahtbereich, die Nahtfäden und Stichlöcher flüsigkeitsdicht abdichtet.The joint connection points between the parallel cutting edges of the one or multilayer textile fabrics on a high-frequency reactive polymer film strip. The suture threads run through the polymer film strip. The textile fabrics are themselves not radio frequency reactive, provided that they consist of non-polar fiber polymers. By a adapted heat source only the high-frequency reactive polymer film strip goes into one low-viscosity melt phase over which practically in all cavities of the seam as well as in absorbent Materials penetrates, and after cooling the seam area, the sutures and stitch holes seals liquid-tight.

Als Polymer-Folienstreifen sind alle die Materialien geeignet, die unter Umgebungsbedingungen elastisch und flüssigkeitsundurchlässig sind, und durch Hochfrequenzstrahlung erzeugte Wärme in eine schmelzflüssige Phase übergehen, in der sie eine gute Fließfähigkeit besitzen und eine hohe Benetzbarkeit gegenüber den textilen Flächengebilden aufweisen. All of the materials that are suitable under ambient conditions are suitable as polymer film strips are elastic and impermeable to liquids, and heat generated by high-frequency radiation pass a molten phase in which they have good flowability and a high Have wettability compared to the textile fabrics.  

Herstellbar sind unterschiedliche Nähte wie z. B. Doppelkappnaht, Safety-Naht und die aus der DE 32 09 054 A1 bekannte Naht, bei der dann zwei Polymer-Foliestreifen vorzusehen sind.Different seams such as. B. double lap seam, safety seam and from the DE 32 09 054 A1 known seam, in which two polymer film strips are then to be provided.

Es kann vorteilhaft sein, zusätzliche Polymer-Foliestreifen vorzusehen, um mehr Dichtmasse in die Naht einzubringen.It may be advantageous to provide additional polymer film strips in order to add more sealing compound to the Seam.

Verfahrensgemäß wird der hochfrequenzreaktive Polymer-Folienstreifens in die Fügeverbindung während des Nähprozesses eingebracht, anschließend erfolgt das Aufschmelzen der Polymermasse durch Hochfrequenzstrahlung. Die Nahteinstichlöcher und Nähgutzwischenräume werden mit der nun niedrigviskosen Polymermasse unter Druck ausgefüllt und abgedichtet.According to the method, the high-frequency-reactive polymer film strip is inserted into the joint introduced during the sewing process, then the polymer mass is melted through high frequency radiation. The stitching holes and spaces between the sewing material are covered with the now filled and sealed low-viscosity polymer mass under pressure.

Die Anwendung derartig hergestellter Nähte umfaßt neben der Nahtversiegelung gegenüber Wasser und wäßrigen Lösungen auch die Barrierebildung gegenüber Körperflüssigkeiten, mit Bakterien und/oder Viren kontaminierten Körperflüssigkeiten und auch gegenüber der Trockenpenetration von Bakterien und Viren.The use of seams produced in this way includes, in addition to the seam sealing opposite Water and aqueous solutions also form the barrier against body fluids Bacteria and / or viruses contaminated body fluids and also against the Dry penetration of bacteria and viruses.

Der Vorteil der Erfindung besteht darin, daß mittels eines einfachen Verfahrens, welches sich gut an den Nähprozeß anschließt, eine flüssigkeitsdichte Naht herstellen läßt, die eine hohe Reißfestigkeit aufweist.The advantage of the invention is that by means of a simple method, which works well connects to the sewing process, allows a liquid-tight seam to be produced, which has a high Tear resistance.

Nachfolgend wird die Erfindung an Hand von zwei Ausführungsbeispielen näher erläutert. In den Zeichnungen zeigen:The invention is explained in more detail below on the basis of two exemplary embodiments. In the Drawings show:

Fig. 1 eine erfindungsgemäß modifizierte Doppelkappnaht Fig. 1 is a inventively modified double lap

Fig. 2 eine erfindungsgemäß modifizierte Safety-Naht Fig. 2 is an inventively modified safety seam

In der Fig. 1 ist ein Schnitt durch eine Doppelkappnaht dargestellt. Mittels der beiden Nähte 3 sind zwei textile Flächengebilde 1, 2 miteinander verbunden. Ein hochfrequenzreaktiver Polymer- Folienstreifen 4 befindet sich zwischen den beiden sich überlappenden Schnittkanten der textilen Flächengebilde 1, 2. In FIG. 1, a section through a double lap. Two textile fabrics 1 , 2 are connected to one another by means of the two seams 3 . A high-frequency-reactive polymer film strip 4 is located between the two overlapping cut edges of the textile fabrics 1 , 2 .

Verfahrensgemäß wird der hochfrequenzreaktive Polymer-Folienstreifen 4 vor dem Zusammennähen zwischen die sich überlappenden Schnittkanten der textilen Flächengebilde 1, 2 eingelegt. Anschließend wird die Naht doppelt vernäht, so daß der Polymer-Folienstreifen 4 fixiert ist, und beide Nähfäden 3 durch diesen verlaufen. Die Doppelkappnaht wird unter Druck einer Hochfrequenzstrahlung ausgesetzt, die geeignet ist, den Polymer-Folienstreifen in eine niedrigviskose Polymermasse aufzuschmelzen. Im niedrigviskosen Zustand durchdringt die Polymermasse den gesamten Nahtbereich, sowie die Löcher der Naht und die Nahtfäden 3. Der Druck ist dabei so bemessen, daß ein "Aufbäumen" bei Erwärmung durch die Hochfrequenzstrahlung verhindert wird und gleichzeitig Querschnittsminderungen bzw. Ausdünnungen der textilen Flächengebilde 1, 2 im Nahtbereich ausgeschlossen werden.According to the method, the high-frequency-reactive polymer film strip 4 is inserted between the overlapping cut edges of the textile fabrics 1 , 2 before being sewn together. The seam is then sewn twice, so that the polymer film strip 4 is fixed, and both sewing threads 3 run through it. The double-cap seam is exposed to high-frequency radiation under pressure, which is suitable for melting the polymer film strip into a low-viscosity polymer mass. In the low-viscosity state, the polymer mass penetrates the entire seam area, as well as the holes in the seam and the seam threads 3 . The pressure is dimensioned such that "rearing up" when heated by the high-frequency radiation is prevented and at the same time cross-sectional reductions or thinning of the textile fabrics 1 , 2 in the seam area are excluded.

Eine entsprechende Vorrichtung ist so ausgeführt, daß eine Schweißbacke und eine ihr gegenüberliegende Gegenbacke in der Breite dem Nahtbereich entsprechen. Die Energiezufuhr erfolgt diskontinuierlich über eine bestimmte Nahtlänge und zwar so, daß auschließlich der Polymer-Foliestreifen 4 in eine niedrigviskose Schmelzphase übergeht und die anliegenden und angrenzenden textilen Flächengebilde von dem Wärmeeintrag unbeeinflußt hinsichtlich einer Strukturänderung oder Querschnittsminderung bleiben.A corresponding device is designed so that the width of a welding jaw and an opposing counter jaw correspond to the seam area. The energy supply takes place discontinuously over a certain seam length and in such a way that only the polymer film strip 4 changes into a low-viscosity melting phase and the adjacent and adjacent textile fabrics remain unaffected by the heat input with regard to a change in structure or a reduction in cross-section.

Fig. 2 zeigt eine Safety-Naht im Schnitt. Mittels der beiden doppelt verlaufenden Nähfäden 3 ist der Polymerfolienstreifen 4 zwischen den beiden Enden der textilen Flächengebilde eingebunden. Der Verfahrensablauf ist analog wie unter Fig. 1 erläutert. Gemäß dem Nahtverlauf erfolgt die Aufbringung der Druckwirkung auf die Naht vorteilhaft parallel zur Lage der textilen Flächengebilde 1, 2. Fig. 2 shows a safety seam in section. By means of the two double-running sewing threads 3 , the polymer film strip 4 is bound between the two ends of the textile fabrics. The procedure is analogous to that explained in FIG. 1. According to the course of the seam, the pressure effect is advantageously applied to the seam parallel to the position of the textile fabrics 1 , 2 .

Claims (8)

1. Flüssigkeitsdichte, linienförmige Fügeverbindung, die bei der Verarbeitung ein- oder mehrschichtiger, flüssigkeitsdichter, textiler Flächengebilde zu dreidimensionalen Hüllen, mit­ tels unterschiedlicher Nahtformen wie Doppelkappnaht, Safety-Naht o. dgl. gebildet wird, mit zumindest im Nahtbereich parallel verlaufenden Schnittkanten der textilen Flächengebilde (1, 2) und im Nahtbereich angeordneten, durch Hochfrequenz aktivierbaren Materialien, dadurch gekennzeichnet, daß zwischen den im Nahtbereich parallel verlaufenden und einander zugewandten Schnittkanten der textilen Flächengebilde (1, 2) ein hochfrequenzreaktiver Polymer-Folienstreifen (4) vorgesehen ist, der von den die Nahtform haltenden Nähfäden (3) durchstochen wird, wobei durch einen unter Wärmeeinwirkung verlaufenen Anteil des hochfrequenzreaktiven Polymer-Folienstreifens (4) die Nahteinstichlöcher und Nähgutzwischenräume vollständig ausgefüllt und abgedichtet sind.1.Liquid-tight, line-shaped joint connection, which is formed in the processing of single- or multi-layer, liquid-tight, textile fabrics into three-dimensional shells, with different seam shapes such as double-lap seam, safety seam or the like, with at least in the seam area parallel cutting edges of the textile Flat structures ( 1 , 2 ) and materials arranged in the seam area which can be activated by high frequency, characterized in that a high-frequency-reactive polymer film strip ( 4 ) is provided between the cut edges of the textile flat structures ( 1 , 2 ) which run parallel and face one another in the seam area the sewing threads ( 3 ) holding the seam shape are pierced, the seam puncture holes and interstices between the sewing material being completely filled and sealed by a portion of the high-frequency-reactive polymer film strip ( 4 ) that is exposed to heat. 2. Flüssigkeitsdichte, linienförmige Fügeverbindung nach Anspruch 1, dadurch gekenn­ zeichnet, daß der hochfrequenzreaktive Polymer-Folienstreifen (4) aus Polyurethancopolymeren besteht.2. Liquid-tight, linear joint connection according to claim 1, characterized in that the high-frequency-reactive polymer film strip ( 4 ) consists of polyurethane copolymers. 3. Flüssigkeitsdichte, linienförmige Fügeverbindung nach Anspruch 1 oder 2, dadurch ge­ kennzeichnet, daß der Nähfaden (3) aus Polyester besteht.3. Liquid-tight, linear joint connection according to claim 1 or 2, characterized in that the sewing thread ( 3 ) consists of polyester. 4. Verfahren zur Herstellung einer flüssigkeitsdichten, linienförmigen Fügeverbindung, die bei der Verarbeitung ein- oder mehrschichtiger, flüssigkeitsdichter, textiler Flächengebilde zu dreidimensionalen Hüllen, mittels unterschiedlicher Nahtformen wie Doppelkappnaht, Safety- Naht o. dgl. gebildet wird, wobei zumindest in den Nahtbereich der parallel verlaufenden Schnittkanten der textilen Flächengebilde (1, 2) ein durch Hochfrequenz aktivierbares Material eingearbeitet wird, und die Naht der Einwirkung eines Hochfrequnezfeldes ausgesetzt wird, dadurch gekennzeichnet, daß
ein hochfrequenzreaktiver Polymer-Folienstreifen (4) in die Fügeverbindung zwischen die im Nahtbereich parallel verlaufenden und einander zugewandten Schnittkanten der textilen Flä­ chengebilde (1, 2) während des Nähprozesses eingearbeitet wird,
anschließend die Polymermasse unter Druckwirkung auf die Naht mittels Hochfrequenzstrahl­ ung in eine niedrigviskose Polymermasse aufgeschmolzen wird, und nach dem Ausfüllen und der Abdichtung der Nahteinstichlöcher und Nähgutzwischenräume mit der niedrigviskosen Po­ lymermasse die Druckwirkung aufgehoben und nachfolgend die Fügeverbindung abgekühlt wird.4. A method for producing a liquid-tight, line-shaped joint connection, which is formed in the processing of single- or multi-layer, liquid-tight, textile fabrics into three-dimensional casings, by means of different seam shapes such as double-lap seam, safety seam or the like, whereby at least in the seam area parallel cutting edges of the textile fabrics ( 1 , 2 ) a material that can be activated by high frequency is worked in, and the seam is exposed to the action of a high frequency field, characterized in that
a high-frequency-reactive polymer film strip ( 4 ) is worked into the joint between the cut edges of the textile fabric ( 1 , 2 ) that run parallel and face each other in the seam area during the sewing process,
the polymer mass is then melted into a low-viscosity polymer mass under high-pressure radiation by means of high-frequency radiation, and after the filling and sealing of the stitching holes and interstices between the sewing material with the low-viscosity polymer mass, the pressure effect is abolished and the joint is subsequently cooled. 5. Verfahren nach Anspruch 4, dadurch gekennzeichnet, daß ein Nähgarn aus Polyester verwendet wird.5. The method according to claim 4, characterized in that a sewing thread made of polyester is used. 6. Verfahren nach Anspruch 4 oder 5, dadurch gekennzeichnet, daß die zu verbindenden textilen Flächengebilde (1, 2) aus nicht hochfrequenzreaktiven Faserstoffen und Polymeren be­ stehen.6. The method according to claim 4 or 5, characterized in that the textile fabrics to be connected ( 1 , 2 ) are made of non-high-frequency reactive fibers and polymers. 7. Verfahren nach einem der Ansprüche 4 bis 6, dadurch gekennzeichnet, daß ein hochfre­ quenzreaktives Material für den Polymer-Folienstreifen (4) verwendet wird, das eine hohe Aff­ inität zur Oberfläche der textilen Flächengebilde (1, 2) und zu den Nahtfäden (3) aufweist.7. The method according to any one of claims 4 to 6, characterized in that a hochfre quenzreaktivem material for the polymer film strip ( 4 ) is used, which has a high affinity for the surface of the textile fabrics ( 1 , 2 ) and the sutures ( 3 ). 8. Verfahren nach Anspruch 7, dadurch gekennzeichnet, daß Polyurethancopolymere für die Polymer-Foliestreifen (4) verwendet werden.8. The method according to claim 7, characterized in that polyurethane copolymers are used for the polymer film strips ( 4 ).
DE19739592A 1997-09-10 1997-09-10 Liquid-tight, line-shaped joint connection for single- or multi-layer textile fabrics, as well as processes for their production Expired - Fee Related DE19739592C2 (en)

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DE10158016C1 (en) * 2001-11-27 2003-01-09 Ploucquet C F Gmbh Creating water-tight connection between layers of textiles, involves use of laser ray to melt adhesive layer

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GB979829A (en) * 1963-04-24 1965-01-06 Siebe Gorman & Co Ltd Improvements in or relating to seams
GB1113684A (en) * 1965-09-08 1968-05-15 Greengate & Irwell Rubber Comp Improvements in water proof garments
DE2810991A1 (en) * 1977-03-18 1978-09-21 Bibby Ltd Noel CLOTH SEAM AND METHOD OF MANUFACTURING IT
DE2751162A1 (en) * 1977-11-16 1979-05-17 Daimler Benz Ag waterproofing overlapping seams in tarpaulins - by interposing self-adhesive polyurethane tape between overlaps before sewing together
DE3209054A1 (en) * 1982-03-12 1983-09-29 Paul Kiefel Hochfrequenz-Anlagen Gmbh, 8228 Freilassing Watertight seam in plastic-coated fabrics and process and device for making this seam
DE3540368C1 (en) * 1985-11-14 1987-04-02 Pfaff Ind Masch Method for producing a durable, liquid-tight connection of layers of material
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Publication number Priority date Publication date Assignee Title
CN103167895A (en) * 2010-08-26 2013-06-19 株式会社重松制作所 Method for joining cloth pieces for chemical protective clothing
CN103167895B (en) * 2010-08-26 2015-05-06 株式会社重松制作所 Method for joining cloth pieces for chemical protective clothing

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