DE1479023A1 - High-frequency welding of plastic foams which are difficult to high-frequency weld - Google Patents

High-frequency welding of plastic foams which are difficult to high-frequency weld

Info

Publication number
DE1479023A1
DE1479023A1 DE19631479023 DE1479023A DE1479023A1 DE 1479023 A1 DE1479023 A1 DE 1479023A1 DE 19631479023 DE19631479023 DE 19631479023 DE 1479023 A DE1479023 A DE 1479023A DE 1479023 A1 DE1479023 A1 DE 1479023A1
Authority
DE
Germany
Prior art keywords
welding
frequency
frequency welding
materials
polyvinyl
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.)
Pending
Application number
DE19631479023
Other languages
German (de)
Other versions
DE1479023B2 (en
Inventor
Karl-Heinz Stukenbrock
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Stockhausen GmbH and Co KG
Original Assignee
Chemische Fabrik Stockhausen GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Chemische Fabrik Stockhausen GmbH filed Critical Chemische Fabrik Stockhausen GmbH
Publication of DE1479023A1 publication Critical patent/DE1479023A1/en
Publication of DE1479023B2 publication Critical patent/DE1479023B2/en
Pending legal-status Critical Current

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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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/56—After-treatment of articles, e.g. for altering the shape
    • B29C44/5618—Impregnating foam 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
    • 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
    • B29C65/486—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 form being non-liquid, e.g. in the form of granules or powders
    • 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
    • B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
    • 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
    • B29C66/712—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 the composition of one of the parts to be joined being different from the composition of the other part
    • 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
    • B29C66/727—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 porous, e.g. foam
    • 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
    • B29C66/74—Joining plastics material to non-plastics material
    • 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
    • B29C66/74—Joining plastics material to non-plastics material
    • B29C66/748—Joining plastics material to non-plastics material to natural products or their composites, not provided for in groups B29C66/742 - B29C66/746
    • B29C66/7484—Leather
    • 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
    • B29C66/74—Joining plastics material to non-plastics material
    • B29C66/748—Joining plastics material to non-plastics material to natural products or their composites, not provided for in groups B29C66/742 - B29C66/746
    • B29C66/7485—Natural fibres, e.g. wool, cotton
    • 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
    • B29C66/74—Joining plastics material to non-plastics material
    • B29C66/748—Joining plastics material to non-plastics material to natural products or their composites, not provided for in groups B29C66/742 - B29C66/746
    • B29C66/7486—Paper, e.g. cardboard
    • 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
    • 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
    • B29C66/729—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
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
    • B29K2027/06—PVC, i.e. polyvinylchloride
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2033/00—Use of polymers of unsaturated acids or derivatives thereof as moulding material
    • B29K2033/04—Polymers of esters
    • B29K2033/08—Polymers of acrylic acid esters, e.g. PMA, i.e. polymethylacrylate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2033/00—Use of polymers of unsaturated acids or derivatives thereof as moulding material
    • B29K2033/04—Polymers of esters
    • B29K2033/12—Polymers of methacrylic acid esters, e.g. PMMA, i.e. polymethylmethacrylate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2313/00—Use of textile products or fabrics as reinforcement
    • B29K2313/02—Use of textile products or fabrics as reinforcement coated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2711/00—Use of natural products or their composites, not provided for in groups B29K2601/00 - B29K2709/00, for preformed parts, e.g. for inserts
    • B29K2711/12—Paper, e.g. cardboard
    • B29K2711/123—Coated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2009/00—Layered products

Description

Hochfrequensschweißung von schlecht hochfrequensschweißbaren Kunststoffschäumen Beim HoohtrequenssohwoiBen von sohleoht schweißbaren Kunststoffschäumen, s. B. Polyurethansohaus, mit artfre@den Stoffen, wie Textil, Papier, Karton oder Schaumatoff, kann die Schweißfreudigkeit durch Verwondung einer PVC-Folie, Oie ale Schweißmittel dient und zwischen Schaumstoff und artframdes Material gologt wird, orhdht werden. Dieaea Verfahren läßt awar gute SohweiBeftekte erzielen, doeh hat sa siah als zu touer erwieaon. High-frequency welding of plastic foams that are difficult to high-frequency weld When high-frequency welding of plastic foams that can be welded at the bottom, see e.g. polyurethane house, With artfre @ materials such as textiles, paper, cardboard or foam, the willingness to sweat can be increased by using a PVC film, which is used as a welding material and between foam and relevant material is gologt, orhdht. Theeaea procedure leaves awar good Achieve so white effects, doeh has sa siah as too touer.

Eine weitero Möglichkeit ist durch Aufbringen einea SohweiBklebera gegeben, der ein in Lösemitteln, beispielsweise Essigester, gelöstes PVC daratellt. Mit veiner solchon Lösung kann wahlweise der Schaumstoff oder ein anderes nicht schweißbares Material, aber auch beide Materialien, präpariere werden. Auch dieses Verfahren hat sohroro Nachteile. Die Herstollung und Anwendung dea Klebera erfordert grdBoron technischoa Aufwand. Hinzu kommt, daß sich die Klebeldeung nicht in allen Paillon wirtaohaftlioh gleichmäßig und sauber auftragon läBt ; dies trifft insbesondere dann su, wenn die Materialien nicht gansflichig, sonder nur in Bahnen besprüht werden.Another possibility is by applying a white glue given, which daratellt a in solvents, such as ethyl acetate, dissolved PVC. With such a solution, either the foam or another cannot weldable material, but also both materials, can be prepared. This too Sohroro has disadvantages. The production and application of the Klebera requires grdBoron technicaloa effort. In addition, the glue deposit is not in all Paillon can be applied economically evenly and cleanly; this is particularly true then see below, if the materials are not sprayed on, but only in strips.

Es ist forner bekannt, Faserstoffe, Gewebe, Textilien, Lever, Fils oder dergleichen, die mit Kunatatoffen verbunden werden aollen, duroh Trinken odor Besprühen mit einem fUr die Kunstatoffe geigneton Lösmittel sohweiBbar su mahous Beim Reparieren odor Verbinden von Kunststoffolien lt es ferner bekaant, die Folion mit einer Diepersion odor L8oung aus PTO su bestreichen und nach dem Auflegen veiner Abdeckfolie durch saloon Schweißgriffel, ein lötkolbenartiges Gorät, das vor dem Arbeitagang erhitzt wird, so weit zu erwärmen, daß die folio erweicht und die Verbundachicht sun Sahmelson und Golieren gebracht wird.It is known forner, fibrous materials, fabrics, textiles, levers, fils or the like, which are combined with Kunatatoffen aollen, by drinking odor Spray with a solvent that is suitable for plastics, so heat-treatable and su mahous When repairing or joining plastic foils, it is also known, the folion Coat with a odor L8oung dispersion from PTO su and after applying veiner Cover film by saloon welding pen, a soldering iron-like Gorät, which is in front of the Is heated during the working day to heat up so far, that the folio softens and the composite message is brought to sun Sahmelson and golfing.

Dieae Verfahren, soweit aie sich Uberhaupt mit der Erfindung vergleichen lason, ind wegen der srforderlichen Mongen an Trankunga-und Lösungsmittel erheblich zu teuer.The methods, insofar as they compare at all with the invention Lason, ind because of the required amounts of Trankunga and solvents too expensive.

Fia weiterea Verfahren zum Hoohfrequenzzchweißen Yon Schausstoffen wird mit Hilfe von in PVC-Lösungen getränkten oder beschichteten Papieren, lnaboaondero Seidenpapisr, ermöglicht. Die Erfindung verringert gegenüber der vorgenannten Verfahren den Verbrauch an PVO.Another method of high frequency welding of fabrics is made with the help of papers soaked or coated in PVC solutions, lnaboaondero Seidenpapisr, made possible. The invention is reduced compared to the aforementioned method the consumption of PVO.

Dam Schweißmittel kann hiernach auch ale Band ausgebildet soin.The welding means can then also be designed as a band.

Dieses Verfahren besitzt jedoch die Nachteile, daß das Schweißhilfsmittel an don Nähten eine deutliche Versteifung bringt, daß das Zuführon der Bänder und Bahnen einen maschinellen Aufwand erfordert und daB die Gefahr dos Verachiebons, inebesondere der Bander, nicht gans ausgeschaltet werden kann. Diesel Verfahron erlaubt nur dam Anbringen von geraden Nähten, während das Schwolßen von Ornamenten die Verfahrensweise bedeutend rßchworon kurde, indem das Schweißhilfsmittel vorher auf eines der zu verschweißenden Materialien geklebt werden muß.However, this method has the disadvantages that the welding aid at the seams a clear stiffening brings that the supply of the bands and Railways require a mechanical effort and that the risk of verachiebons, In particular, the ribbon cannot be switched off completely. Diesel procedure only allows straight seams to be made while ornaments are swollen The procedure was significantly sworn by the welding aid beforehand must be glued to one of the materials to be welded.

Diese Schwierigkeiten worden erfindungsgemäß daduroh beheben, indes als Schweißhilfamittel ein thermoplastisoher Kunstatoff in Pulverform zur Anwendung kommt. Die Erfindung macht die bisher besohriobenon Arbeitsweisen einfacher und verringert den Aufwand an Sohweißhilfzmittel und Masohinen. Die Präparation kann darüber hinau@ schon beim Vorlieferanten des zur Verschweißung gelangenden Materials durchgeführt werden, ao daB fUr don Schweißvorgang aelbat keine zusätzlichen Aufwendungen notwondig d. BlordurCh worden SohweiBvorginge bolspielsweise in Automobilwerken bol der Heratellung von Seitenteilen und Polaterbezügen verointacht.These difficulties have been solved according to the invention, however a thermoplastic synthetic material in powder form for use as a welding aid comes. The invention makes the previously besohriobenon ways of working easier and reduces the amount of soap whitening agents and masohinen. The preparation can moreover @ already at the pre-supplier of the material to be welded be carried out, so that no additional expenses are required for the welding process necessary d. BlordurCh was whitewashed, for example, in automobile factories Bol the creation of side parts and upholstery covers.

Dam thermoplastische Kunststoffpulver wird erfindungsgemäß auf den Schaumstoff oder ein anderes Material, beispielsweise Textil, Papier oder Pappo gansflächig oder nur an don su verschweißenden Stollen aufgeztreut und anaehließend duroh Hitseeinwirkung aut don Substrat fixiort, wobei der Kunatatoft sua Bohmelson gebracht wird. Der Schaumstoff odor andere präparierte Materialien können sodann aufgerollt odor gatafalt werden und bedürfen für das spätere Hochfrequen@-aohwaiBam kainar waitaran Präparationen odar Bshandlung.Dam thermoplastic plastic powder is according to the invention on the Foam or another material, for example textile, paper or cardboard all over or only on cleats that are welded together and attached Duroh Hitseeinffekt aut don substrate fixiort, whereby the Kunatatoft sua Bohmelson is brought. Of the Foam or other prepared materials can then be rolled up odor gatafalt and require @ -aohwaiBam for the later high frequency kainar waitaran preparations or treatment.

Durch den Pulverauftrag, der das Schweißhilf@mittel punktförmig auf 4on substrat blogert wird démon Flaxibilität und AtmungaaktiTität aient beeinträchtigt, was vor allea bai Palataratoffan in Hinbliok ut don Fauohtigkaitatranaport von auBarordantliohar Wiehtigkait Lots Dieses ist aber sweifellos der Fall, wenn das Schweißhilfsmittol in Form von Bahnen, Bändern, Filmen, Lösungen oder Dispersionen aufgabraeht wird. Außerden wird duroh don punktföraigan, aiohtflächigen Pulverauftrag bis zu 50% an Schweißhilfsmittel gespart.Through the application of powder, which the welding aid @ is centered on 4on substrat blogert is démon flaxibility and respiratory inactivity aient impaired, what especially a bai Palataratoffan in Hinbliok ut don Fauohtigkaitatranaport from auBarordantliohar Wiehtigkait Lots This is undoubtedly the case when the welding aid is applied in the form of webs, tapes, films, solutions or dispersions. In addition, you will be able to point it out, a surface powder application of up to 50% Welding aids saved.

Als Schweißhilfsmittel werden vorsugsweise thermoplastische Kunstateffpülvar out der Baaia ton Polyvinylacetat, Polyvinylchlorid, Polyvinylpropionat, Polyvinylidenchlorid, Acrylsäursester und deren Miaohpolymariaata aingaaatat. Dia Pulvar müaaan von fainar Baaohaffanait main und in thror Mmung vorsugs@eise anlachen 30 und 400 Mikron liegen.Thermoplastic plastics are preferably used as welding aids out of Baaia ton polyvinyl acetate, polyvinyl chloride, polyvinyl propionate, polyvinylidene chloride, Acrylic acid esters and their Miaohpolymariaata aingaaatat. Dia Pulvar müaaan by fainar Baaohaffanait main and in thror Mmung vorsugs @ eise laugh at 30 and 400 microns.

Beispiel 1 Polyurethanschaum der Estertype mit einem Raumgewicht von 28 kg/@bm wird mit Hilfa eines Rüttelsiebes, einer elektromagnetischen Bestreuungsrinne oder einem anderen gesigneten Aggregat mit Polyvinylacetatpulver K-Wert 40 und einer Körnung zwischen 40 und 400 Mikron präpariert. Die Auflage beträgt 40 g/m². Danach wird 20 bis 30 8ekundan in einer Infrarotsone geliert, anschließend abgekühlt und zutgerollt. Derartig einseitig präparierter Polyurethanschausstoff lllßt loh untor dan übliohan Bedingungen mit Pappe, Leder, Kunstatoffolia, insbesondere atar Taxtilmatarial, z. B. Autopolataratoffan, hochfrequent verschweißen. Die Wirkung des einseitig aufgebraohton Pulser* Lot derart, daB die nicht präparierte Seite gleichaaitig mit PVO-Folia verschweißt werden kann. Auf diese Weise ist eine Dreischichtenschweißeung möglich. Example 1 Polyurethane foam of the ester type with a volume weight of 28 kg / @ bm is with the help of a vibrating sieve, an electromagnetic spreading chute or another signed aggregate with polyvinyl acetate powder K-value 40 and one Grain between 40 and 400 microns prepared. The print run is 40 g / m². Thereafter is gelled in an infrared zone for 20 to 30 seconds, then cooled and rolled down. Polyurethane material prepared on one side in this way leaves nothing to be desired dan übliohan conditions with cardboard, leather, Kunstatoffolia, in particular atar Taxtilmatarial, z. B. Autopolataratoffan, weld at high frequency. The effect of the unilaterally applied clay Pulser * solder in such a way that the unprepared side is welded with PVO film at the same time can be. In this way, three-layer welding is possible.

Beispiel 2 yin Textilmaterial, beispielsweise ein Autopolsterstoff, wird unter den 1s Beispiel 1 angegebenen Bedingungen mit Polyvanylacetatpulver präpariert. $in derartig behandeltet Material ßt sikh mit sinon nicht präparierten, normalerweise nicht schweißfähigen Polyurethanaohaum ohne Schwierigkeiten hunter don Ubllohon BeOlagungen hoohfrequent eohweiBen. Die Wirkung dos präparierten Textilmaterials int derart, daB 1s glolohen Schweißgang die fteio seize dos Sohaumstoffes mit einer PVO-Folie verbunden werden kann. Example 2 yin textile material, for example a car upholstery fabric, is prepared under the conditions specified in Example 1 with polyvanyl acetate powder. $ in material treated in this way, sikh with sinon not prepared, normally non-weldable polyurethane foam without difficulty hunter don Ubllohon High frequency of obscurations. The effect of the prepared textile material int such that 1s glolohen welding process the fteio seize dos Sohaumstoffes with a PVO film can be connected.

Beispiel 3 Polyurethanschaum wird mit einem Mischpolymerisat aus Vinylchlorid und Vinylather unter don in Beiapiel 1 angegebenen Bedingungen präparier. Da Pulver wird vorsugsweise mit veiner torngr6ßo twiaohen 100 und 300 Mikron angewendet. Example 3 Polyurethane foam is made with a copolymer Prepare vinyl chloride and vinyl ether under the conditions given in Example 1. The powder is preferably used with a diameter of between 100 and 300 microns.

Bin derartig einseitig behandeltes Material läßt sich mit nicht präparierten Textilien oder anderen Materialien hochfrequent veraohweiBen. In gleichen Schweißvorgang kann die nicht präpar@ierte Seltz mit veiner PVC-Folie abgedeckt und verbunden werden.A material that has been treated on one side in this way cannot be treated with unprepared material Heat-weld textiles or other materials at high frequencies. In the same welding process the unprepared Seltz can be covered with vinyl film and connected.

Beispiel 4 Paokpapier (Natronkrattpapier) wird wie unter Beiapiel 1 angegeben mit einem Mischpolymerisat aus Vinylohlorid und Vinylather präpariert. Derartig einesitig behandeltea Papier kann dann mit Polyurethanachaum und einer aut die nicht präparierte Bette aufgelegten PVO-Folio verachweißt werden. Example 4 Paok paper (Natronkrattpapier) is as described in Beiapiel 1 indicated with a copolymer of vinyl chloride and vinyl ether. Such a treated paper can then with polyurethane foam and a PVO-Folio placed on the unprepared bed can be welded to.

Claims (5)

Patentansprüche 1. Hochfrequenzschweißung ton schlecht schweißbaren Kunststoffen, beispielsweise Polyurethanschaum, mit artfremden Stoffen, wie Hartpappe, Karton, Papier, Textilien und dergleichen, oder von artfromden Stoffen untereinander, dadurch gekennzeichnet, daß *in SchwelBhil£smittel in Form von Thermoplastpulvern verwendet wird. Claims 1. High frequency welding clay poorly weldable Plastics, e.g. polyurethane foam, with alien materials, such as hard cardboard, Cardboard, paper, textiles and the like, or of non-specific materials with one another, characterized in that * in SchwelBhilesmittel in the form of thermoplastic powders is used. 2. Hochfrequenzschweißung nach Anspruch 1, dadurch gekennzeichnet, daß da Tltsrmoplastpulver vor der Schwellung aut eines der su verschweißeaden Materialien aufgebracht und durch Gelieren tiziort wird.2. High-frequency welding according to claim 1, characterized in that that the thermoplastic powder before the swelling is one of the following weldable materials is applied and tiziort by gelling. 3. Hochfrequenzsohweißung naoh Anspruch 1 und 2, dadurch gekennzeicbaet, daß das Schweißhilfsmittel wahlweise ganzflächig oder nur an don su verschweißenden Stellon aufgebracht wird.3. Hochfrequenzsohweißung naoh claim 1 and 2, characterized gekennzeicbaet, that the welding aid can be welded either over the entire surface or only on don su Stellon is applied. 4. Hochfrequenzschweißung nach Anspruch 1 bis 3, dadurch gekennzeichnst, daß Polyvinylaoetat, Polyvinylohlorid, Polyvinylpropionat, Polyvinylidenchlorid, Acrylsäureester und deren Mischpolymerisate als Schweißhilfsmittel eingesetzt werden.4. High-frequency welding according to claim 1 to 3, characterized in that that polyvinyl acetate, polyvinyl chloride, polyvinyl propionate, polyvinylidene chloride, Acrylic acid esters and their copolymers are used as welding aids. 5. HochfrequenzsohweiBung nach Anspruch 1 bis 4, dadurch gekenazeichnot, daß do* verwendete Thersoplastpulver in einer K zwischen 30 bis 400 Mikron vorliegt.5. HochfrequenzsohweiBung according to claim 1 to 4, characterized gekenazeichnot, that the thermoplastic powder used is in a K between 30 to 400 microns.
DE19631479023 1963-09-18 1963-09-18 PROCESS FOR HIGH-FREQUENCY WELDING OF POORLY WELDABLE PLASTICS Pending DE1479023B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2471854A1 (en) * 1979-12-20 1981-06-26 Katex Kaschier Praegeanstalt Heat weldable cellular material esp. polyurethane - contg. a uniformly distributed powder of a heat weldable material fixed by a fine grain powder with thermo-adhesive properties

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2170445B (en) * 1985-02-01 1989-02-01 Abbeyvogue Limited Flexible sheet material suitable for shoe uppers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2471854A1 (en) * 1979-12-20 1981-06-26 Katex Kaschier Praegeanstalt Heat weldable cellular material esp. polyurethane - contg. a uniformly distributed powder of a heat weldable material fixed by a fine grain powder with thermo-adhesive properties

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GB1046328A (en) 1966-10-19

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