DE4036876A1 - Microwave heating of thermoplast(s) - thermoplast contains or contacts conductive fabric cloth, of threads of high electrical resistance - Google Patents

Microwave heating of thermoplast(s) - thermoplast contains or contacts conductive fabric cloth, of threads of high electrical resistance

Info

Publication number
DE4036876A1
DE4036876A1 DE4036876A DE4036876A DE4036876A1 DE 4036876 A1 DE4036876 A1 DE 4036876A1 DE 4036876 A DE4036876 A DE 4036876A DE 4036876 A DE4036876 A DE 4036876A DE 4036876 A1 DE4036876 A1 DE 4036876A1
Authority
DE
Germany
Prior art keywords
threads
fabric
conductive
thermoplast
coated
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.)
Ceased
Application number
DE4036876A
Other languages
German (de)
Inventor
Andreas Piller
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.)
Individual
Original Assignee
Individual
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
Priority claimed from DE4006134A external-priority patent/DE4006134A1/en
Application filed by Individual filed Critical Individual
Priority to DE4036876A priority Critical patent/DE4036876A1/en
Publication of DE4036876A1 publication Critical patent/DE4036876A1/en
Ceased 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/88—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts characterised primarily by possessing specific properties, e.g. electrically conductive or locally reinforced
    • B29C70/882—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts characterised primarily by possessing specific properties, e.g. electrically conductive or locally reinforced partly or totally electrically conductive, e.g. for EMI shielding
    • B29C70/885—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts characterised primarily by possessing specific properties, e.g. electrically conductive or locally reinforced partly or totally electrically conductive, e.g. for EMI shielding with incorporated metallic wires, nets, films or plates
    • 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • 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
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/1403—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the type of electromagnetic or particle radiation
    • B29C65/1425—Microwave radiation
    • 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
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/1477—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation making use of an absorber or impact modifier
    • B29C65/148—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation making use of an absorber or impact modifier placed at the interface
    • 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
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3404—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint
    • B29C65/342—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint comprising at least a single wire, e.g. in the form of a winding
    • 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
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3404—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint
    • B29C65/3436—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint comprising independent continuous fibre-reinforcements
    • 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
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3404—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint
    • B29C65/344—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint being a woven or non-woven fabric or being a mesh
    • 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
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3472—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint
    • B29C65/3484—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint being non-metallic
    • B29C65/3488—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint being non-metallic being an electrically conductive polymer
    • 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
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/36—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction
    • B29C65/3604—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint
    • B29C65/3608—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint comprising single particles, e.g. fillers or discontinuous fibre-reinforcements
    • B29C65/3612—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint comprising single particles, e.g. fillers or discontinuous fibre-reinforcements comprising fillers
    • 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
    • B29C65/5007—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 characterised by the structure of said adhesive tape, threads or the like
    • B29C65/5028—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 characterised by the structure of said adhesive tape, threads or the like being textile in woven or non-woven form
    • 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
    • B29C65/5007—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 characterised by the structure of said adhesive tape, threads or the like
    • B29C65/5035—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 characterised by the structure of said adhesive tape, threads or the like being in thread form, i.e. in the form of a single filament, e.g. in the form of a single coated filament
    • 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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/80—Apparatus for specific applications
    • 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
    • B29C2035/0855—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using microwave
    • 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
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3472—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint
    • B29C65/3484—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint being non-metallic
    • B29C65/3492—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint being non-metallic being carbon
    • 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
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    • 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
    • B29C66/73—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B29K2307/00—Use of elements other than metals as reinforcement
    • 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
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0003—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular electrical or magnetic properties, e.g. piezoelectric
    • B29K2995/0005—Conductive

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • Toxicology (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Thermal Sciences (AREA)
  • Nonwoven Fabrics (AREA)
  • Floor Finish (AREA)

Abstract

In heating thermoplastic by microwaves, microwave activation is brought about by conductive material (I) comprising nonwoven fabric, cloth or threads with high electrical resistance. (I) is of C or conductive plastics material, partic. polymer such as polypyrrole, polyaniline, polythiophen, polyfuran, poly-p-phenylene, or their derivs. (I) is coated or impregnated with thermoplastic adhesive, on one or both faces, flat or in stripes, waves, points, rhombuses, or other geometric or nongeometric form. (I) is incorporated in, under, or above material to be bonded to welded. ADVANTAGE - Uniform heating is achieved, avoiding occurrence of zones insuffiently heated for activation of bonding or welding, escape of leakage currents through open joints is avoided. (Dwg.0/0)

Description

Die Erfindung betrifft eine Mikrowellen-Aktivierbar­ keit von Thermoplasten durch leitfähige Faservliese und leitfähige Gewebe, vorzugsweise Kohlefaservliese bzw. leitfähige Polymerfaservliese und Gewebe.The invention relates to a microwave activatable thermoplastic through conductive nonwovens and conductive fabrics, preferably carbon fiber nonwovens or conductive polymer fiber fleece and fabric.

Es sind zwischenzeitlich eine Reihe von Patentanmeldun­ gen bezüglich einer Mikrowellenaktivierbarkeit von Ther­ moplasten, insbesondere zur Bodenbelagsverklebung und zur Abdichtbahnenverschweißung bekannt. Die maßgeblichen Anmeldungen sind hier wohl die DE-33 07 502, DE 38 02 881.6, EP 03 31 765 und die P 35 45 600.0.There are now a number of patent applications gene regarding a microwave activatability of Ther plastics, especially for gluing flooring and known for sealing membrane sealing. The authoritative Applications here are probably DE-33 07 502, DE 38 02 881.6, EP 03 31 765 and P 35 45 600.0.

All diese vorgenannten Verfahren bewirken auf unterschiedliche Weise und mit unterschiedlichem Erfolg eine Mikrowellenaktivierbarkeit von Thermoplasten. All of the above methods cause different ways and with different success a microwave activability of thermoplastics.  

All diese Verfahren haben jedoch im Wesentlichen 2 gra­ vierende Nachteile, die eine wirtschaftliche, praxisge­ rechte Anwendung unmöglich machen und deshalb auch kei­ nes der mit vorgenannten Patentschriften erwähnten Ver­ fahren bisher auf dem Markt ist, bzw. eine Zulassung er­ halten hat.However, all of these processes have essentially two serious disadvantages, which make economical, practical application impossible and therefore none of the processes mentioned with the aforementioned patents has been on the market to date or has received approval.

Diese Nachteile sind:These disadvantages are:

  • 1. Bei allen Verfahren wird die Mikrowellenabsorp­ tion in den Thermoplasten durch leitfähige Additi­ ve oder anderen mit hoher Dielektrizitätskonstan­ te versehenen Materialien ermöglicht. Die erforder­ liche Gleichmäßigkeit bzw. Homogenität der Absorp­ tionsstoffe ist jedoch bei allen genannten Verfah­ ren derart ungenügend, daß keine gleichmäßige Auf­ heizung der Thermoplaste möglich ist. Verstärkt wird dieses Problem durch physikalisch bedingte "Löcher" in der Mikrowellendichte der ausgestrahl­ ten Energie. Dies hat zur Folge, daß beispielswei­ se eine Teilfläche des Boden- oder Dachbelages aus­ reichend aktiviert und damit verklebt bzw. ver­ schweißt wurde, eine andere Teilfläche innerhalb desselben Strahlungsgebietes jedoch nicht oder zu­ wenig erwärmt wurde und damit keine mängelfreie Verlegung möglich ist.1. In all processes, the microwave absorber tion in the thermoplastics through conductive additives ve or others with high dielectric constant provided materials. The required Liche uniformity or homogeneity of the absorbent However, is in all of the above-mentioned processes ren so insufficient that no uniform on heating the thermoplastics is possible. Reinforced this problem is caused by physical "Holes" in the microwave density of the emitted energy. As a result, for example se a partial area of the floor or roof covering sufficiently activated and thus glued or ver was welded, another sub-area within of the same radiation area, however, not or too little was warmed up and therefore no defects-free Laying is possible.
  • 2. Im Gegensatz zur Mikrowellenerwärmung im ge­ schlossenen Mikrowellenherd oder in einer Mikrowel­ lendurchlaufanlage geht bei der offenen bzw. halb­ offenen Mikrowellen-Erwärmungstechnik ein Großteil der eingesetzten Energie durch "Fremdguterwärmung" bzw. Leckstrahlung verloren. Versuche, diese Verlus­ te durch den Einsatz unmittelbar unter dem Erwär­ mungsgut angebrachter Reflexionsschichten z. B. in Form von Aluminiumfolien oder anderen wellenreflek­ tierenden Beschichtungen zu minimieren, brachten zwar ein besseres Erwärmungsergebnis und es wurde ein unzulässiges Durchdringen der Mikrowellenener­ gie z. B. durch Zimmerdecken damit verhindert, hat­ te jedoch zur Folge, daß, durch diese Reflexions­ schichten bedingt, erhebliche, weit über die zuläs­ sige Norm hinausgehende Leckstrahlungen aus den of­ fenen Fugen zwischen dem Mikrowellengerät und dem Erwärmungsgut austraten. Eine derartige Leckstrah­ lung kann zum einen schwere gesundheitliche Schä­ den an den Personen, die sich in unmittelbarer Nä­ he des Mikrowellengerätes aufhalten, zur Folge ha­ ben und zum anderen zu erheblichen Störungen im Funkverkehr führen.2. In contrast to microwave heating in ge closed microwave oven or in a microwave Continuous flow system goes with the open or half open microwave heating technology a lot of the energy used through "external goods heating" or leakage radiation lost. Try this loss  through the use immediately under heating mungsgut attached reflective layers z. B. in Form of aluminum foil or other wave reflection minimizing coatings a better warming result and it was an inadmissible penetration of the microwave cast z. B. prevented by ceilings However, as a result of this reflection due to layers, considerable, far beyond the permissible leakage radiation from the open Open joints between the microwave oven and the Exit heating material. Such a leak jet on the one hand, lung damage can be serious to the people who are in the immediate vicinity stop the microwave oven, resulting in ha ben and on the other hand to significant disturbances in the Conduct radio traffic.

Der Erfindung liegt deshalb die Aufgabe zu Grunde, ei­ ne Erwärmung von Thermoplasten durch Mikrowellen zu ermöglichen, die die vorgenannten Nachteile vermeidet und den Einsatz der Mikrowellenerwärmung genehmigungs­ fähig und damit wirtschaftlich einsetzbar macht.The invention is therefore based on the object ne heating of thermoplastics by microwaves enable that avoids the aforementioned disadvantages and the use of microwave heating approval capable and therefore economically usable.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß die Mikrowellenerwärmung von Thermoplasten durch ein leitfähiges, mit hohem elektrischen Widerstand versehenes Faservlies, Gewebe oder Fäden, vorzugsweise aus Kohlenstoffasern oder leitfähigen Kunststoffen, vorzugsweise leitfähigen Polymeren wie z. B. Polypyrrol, Polyanilin, Polythiophen, Polyfuran und Polyparaphenylen bzw. deren Derivate erfolgt. According to the invention, this object is achieved by that the microwave heating of thermoplastics by a conductive, with high electrical resistance provided nonwoven, fabric or threads, preferably made of carbon fibers or conductive plastics, preferably conductive polymers such. B. Polypyrrole, polyaniline, polythiophene, polyfuran and Polyparaphenyls or their derivatives takes place.  

Praxisversuche haben gezeigt, daß derartige Faservlie­ se, Gewebe oder Fäden in der Lage sind, eine hohe Mikrowellenenergieabsorption mit weitestgehender Gleichmäßigkeit zu ermöglichen. Zugleich wirken diese Vliese, Gewebe oder Fäden als "Schutzschild" gegen eine unzulässige Durchdringung von Mikrowellenstrahlung z. B. durch Gebäudedecken. Bedingt durch die Leitfähig­ keit bei hohem elektrischen Widerstand wirken die Fasern wie Heizdrähte, ohne die Nachteile einer Wellenrefle­ xion aufzuweisen.Practical tests have shown that such fleece se, fabric or threads are capable of high Microwave energy absorption with the greatest possible To enable uniformity. At the same time, they work Nonwovens, fabrics or threads as a "protective shield" against an impermissible penetration of microwave radiation e.g. B. by building ceilings. Conditional The fibers act with high electrical resistance like heating wires, without the disadvantages of a wave reflection to have xion.

Durch derartige Faservliese, Gewebe oder Fäden können alle Arten von Bodenbelägen, Wandbelägen, Deckenbelägen, Dachbelägen und alle anderen thermoplastischen Klebe- oder Schweißverbindungen verklebt, verschweißt bzw. verbunden werden.Such non-woven fabrics, fabrics or threads can all types of floor coverings, wall coverings, ceiling coverings, Roofing and all other thermoplastic adhesive or Welded connections glued, welded or get connected.

Das Faservlies, Gewebe oder die Fäden können zur Verkle­ bung von nichtadhäsiven Materialien ein oder beidseitig mit jeglicher Art von herkömmlichen Schmelzklebstof­ fen flächig, in Streifen, Wellen, Punkten, Rauten oder anderen geometrischen Formen beschichtet werden. Derartige Vliese, Gewebe oder Fäden können direkt werk­ seitig, danach manuell oder als separate Klebeschicht eingesetzt werden.The nonwoven fabric, fabric or threads can be used for bonding Exercise of non-adhesive materials on one or both sides with any kind of conventional hot melt adhesive flat, in stripes, waves, dots, rhombuses or other geometric shapes. Such fleeces, fabrics or threads can work directly sided, then manually or as a separate adhesive layer be used.

Das Faservlies, Gewebe oder die Fäden können zur Verschweißung von Bitumen oder Kunststoffabdichtbahnen verwendet werden. Hierbei ist der Einsatz von unbe­ schichtetem oder mit benetzungsverbessernden Beschich­ tungen versehenen Vliesen, Geweben oder Fäden möglich. The nonwoven fabric, fabric or threads can be used Welding of bitumen or plastic sealing sheets be used. Here the use of unbe layered or with a wetting-improving coating nonwovens, fabrics or threads.  

Das beschichtete oder unbeschichtete Vlies, Gewebe oder die Fäden können sowohl direkt flächig, in Streifen oder anderen Formen auf das zu verschweißende Material aufgebracht werden, als auch als separate flächige Bahn, Streifen oder in anderer Form verwendet werden.The coated or uncoated fleece, fabric or the threads can be directly flat, in strips or other shapes on the material to be welded be applied as well as a separate flat web, Strips or other forms can be used.

Der Einsatz derartiger Faservliese, Gewebe oder Fäden ist auch zur Verschweißung von Bitumen- und Asphaltfugen aller Art geeignet.The use of such non-woven fabrics, fabrics or threads is also used for welding bitumen and asphalt joints suitable of all kinds.

Besonders vorteilhaft ist der Einsatz derartiger ableitfähiger Vliese, Gewebe und Fäden bei Bodenbelägen, weil damit ohne zusätzlichen Aufwand eine elektrisch ableitfähige Verlegung (Voraussetzung ist natürlich ein leitfähiger Bodenbelag) möglich ist.The use of such is particularly advantageous dissipative nonwovens, fabrics and threads for floor coverings, because with it an electric dissipative laying (prerequisite is of course a conductive floor covering) is possible.

Claims (9)

1. Verfahren zur Erwärmung von Thermoplasten durch Mikrowellen, dadurch gekenn­ zeichnet, daß die Mikrowellenaktivierung durch ein leitfähiges, mit hohem elektrischen Widerstand versehenes Faservlies, Gewebe oder Fäden, vorzugsweise aus Kohlenstoffasern erfolgt.1. A method for heating thermoplastics by microwaves, characterized in that the microwave activation by a conductive, provided with high electrical resistance nonwoven fabric, tissue or threads, preferably made of carbon fibers. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das Faservlies, Gewebe oder die Fäden aus leitfähi­ gen Kunststoffen, vorzugsweise leitfähigen Polyme­ ren wie z. B. Polypyrrol,. Polyanilin, Polythiophen, Polyfuran oder Polyparaphenylen bzw. deren Derivate besteht.2. The method according to claim 1, characterized in that the nonwoven fabric, fabric or threads made of conductive against plastics, preferably conductive polymers ren such as B. polypyrrole. Polyaniline, polythiophene, Polyfuran or polyparaphenylene or their Derivatives exist. 3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das leitfähige Faservlies, Gewebe oder die Fäden mit einem thermoplastischen Klebstoff beschichtet oder getränkt ist.3. The method according to claim 1, characterized in that the conductive nonwoven, fabric or threads coated with a thermoplastic adhesive or is soaked. 4. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Klebstoffbeschichtung oder Tränkung einsei­ tig, beidseitig, flächig, in Streifen, Wellen, Punkten, Rauten oder anderen geometrischen und nichtgeometrischen Formen erfolgt. 4. The method according to claim 1, characterized in that the adhesive coating or impregnation tig, bilateral, flat, in stripes, waves, Dots, diamonds or other geometric and non-geometric shapes.   5. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das Vlies, Gewebe oder die Fäden in, unter oder über zu verklebende oder verschweißenede Materia­ lien eingearbeitet wird.5. The method according to claim 1, characterized in that the fleece, fabric or threads in, under or about material to be glued or welded lien is incorporated. 6. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die beschichteten oder unbeschichteten Vliese, Gewebe oder Fäden zur Verklebung oder Verschweißung von allen Arten von Bodenbelägen, Wandbelägen, Deckenbelägen, Dachbelägen und allen anderen thermischen Klebe- oder Schweißverbindungen verwendet werden.6. The method according to claim 1, characterized in that the coated or uncoated nonwovens, Fabrics or threads for gluing or welding of all types of floor coverings, wall coverings, Ceiling coverings, roof coverings and all others thermal adhesive or welded connections be used. 7. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das beschichtete oder unbeschichtete Vlies, Gewebe oder die Fäden sowohl direkt flächig, in Streifen oder anderen Formen auf das zu verschweißende oder zu verklebende Material aufgebracht wird, als auch als separate flächige Bahn, in Streifen oder anderen Formen eingesetzt werden kann. 7. The method according to claim 1, characterized in that the coated or uncoated fleece, fabric or the threads both directly, in strips or other shapes to the welded or to adhesive material is applied as well as a separate flat sheet, in strips or other forms can be used.   8. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das beschichtete oder unbeschichtete Vlies, Gewebe oder die Fäden zur Verschweißung von Straßen, Bau­ werkdichtfugen, Stau- oder Druckwasserdichtfugen eingesetzt werden kann.8. The method according to claim 1, characterized in that the coated or uncoated fleece, fabric or the threads for welding roads, construction factory sealing joints, water or pressure water sealing joints can be used. 9. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das leitfähige Vlies, Gewebe oder die Fäden zu elektrisch ableitfähigen Verlegungen verwendet werden kann.9. The method according to claim 1, characterized in that the conductive fleece, fabric or the threads too electrically conductive laying used can be.
DE4036876A 1990-02-27 1990-11-19 Microwave heating of thermoplast(s) - thermoplast contains or contacts conductive fabric cloth, of threads of high electrical resistance Ceased DE4036876A1 (en)

Priority Applications (1)

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DE4036876A DE4036876A1 (en) 1990-02-27 1990-11-19 Microwave heating of thermoplast(s) - thermoplast contains or contacts conductive fabric cloth, of threads of high electrical resistance

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4006134A DE4006134A1 (en) 1990-02-27 1990-02-27 Safe microwave activation of thermoplastics - by addn. of conductive polymer e.g. poly:pyrrole, poly:aniline, poly:thiophene, poly:furan etc. as microwave-activated component
DE4036876A DE4036876A1 (en) 1990-02-27 1990-11-19 Microwave heating of thermoplast(s) - thermoplast contains or contacts conductive fabric cloth, of threads of high electrical resistance

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5603795A (en) * 1994-09-01 1997-02-18 Martin Marietta Energy Systems, Inc. Joining of thermoplastic substrates by microwaves
WO1997036965A1 (en) * 1996-03-29 1997-10-09 Lambda Technologies, Inc. Conductive insert for bonding components with microwave energy
WO1998031759A1 (en) * 1997-01-17 1998-07-23 Minnesota Mining And Manufacturing Company Susceptor composite material patterned in neat polymer
US5798395A (en) * 1994-03-31 1998-08-25 Lambda Technologies Inc. Adhesive bonding using variable frequency microwave energy
EP1348821A2 (en) * 2002-03-25 2003-10-01 fischerwerke Artur Fischer GmbH & Co. KG Fastening element, assembly and method for fastening a roofing membrane
CN102098820A (en) * 2010-12-24 2011-06-15 夏明宝 Microwave oven suitable for heating textiles

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5798395A (en) * 1994-03-31 1998-08-25 Lambda Technologies Inc. Adhesive bonding using variable frequency microwave energy
US5804801A (en) * 1994-03-31 1998-09-08 Lambda Technologies, Inc. Adhesive bonding using variable frequency microwave energy
US5603795A (en) * 1994-09-01 1997-02-18 Martin Marietta Energy Systems, Inc. Joining of thermoplastic substrates by microwaves
WO1997036965A1 (en) * 1996-03-29 1997-10-09 Lambda Technologies, Inc. Conductive insert for bonding components with microwave energy
US6312548B1 (en) 1996-03-29 2001-11-06 Lambda Technologies Conductive insert for bonding components with microwave energy
WO1998031759A1 (en) * 1997-01-17 1998-07-23 Minnesota Mining And Manufacturing Company Susceptor composite material patterned in neat polymer
EP1348821A2 (en) * 2002-03-25 2003-10-01 fischerwerke Artur Fischer GmbH & Co. KG Fastening element, assembly and method for fastening a roofing membrane
DE10213336A1 (en) * 2002-03-25 2003-10-09 Fischer Artur Werke Gmbh Fastening element, arrangement and method for fastening a roofing membrane
EP1348821A3 (en) * 2002-03-25 2004-10-13 fischerwerke Artur Fischer GmbH & Co. KG Fastening element, assembly and method for fastening a roofing membrane
CN102098820A (en) * 2010-12-24 2011-06-15 夏明宝 Microwave oven suitable for heating textiles

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