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DE1629225A1 - Process for welding layers of material - Google Patents

Process for welding layers of material

Info

Publication number
DE1629225A1
DE1629225A1 DE19661629225 DE1629225A DE1629225A1 DE 1629225 A1 DE1629225 A1 DE 1629225A1 DE 19661629225 DE19661629225 DE 19661629225 DE 1629225 A DE1629225 A DE 1629225A DE 1629225 A1 DE1629225 A1 DE 1629225A1
Authority
DE
Germany
Prior art keywords
welding
radiation
laser
material layers
layers
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
DE19661629225
Other languages
German (de)
Inventor
Dr Helmut Helbig
Herbert Schmedding
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.)
Windmoeller and Hoelscher KG
Original Assignee
Windmoeller and Hoelscher KG
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 Windmoeller and Hoelscher KG filed Critical Windmoeller and Hoelscher KG
Publication of DE1629225A1 publication Critical patent/DE1629225A1/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/20—Bonding
    • B23K26/32—Bonding taking account of the properties of the material involved
    • B23K26/324—Bonding taking account of the properties of the material involved involving non-metallic parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/30—Organic 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
    • 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
    • B29C65/16—Laser beams
    • B29C65/1603—Laser beams characterised by the type of electromagnetic radiation
    • B29C65/1612—Infrared [IR] radiation, e.g. by infrared lasers
    • B29C65/1619—Mid infrared radiation [MIR], e.g. by CO or CO2 lasers
    • 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
    • B29C65/16—Laser beams
    • B29C65/1629—Laser beams characterised by the way of heating the interface
    • B29C65/1635—Laser beams characterised by the way of heating the interface at least passing through one of the parts to be joined, i.e. laser transmission 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
    • 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
    • B29C65/16—Laser beams
    • B29C65/1629—Laser beams characterised by the way of heating the interface
    • B29C65/1654—Laser beams characterised by the way of heating the interface scanning at least one of the parts to be joined
    • B29C65/1658—Laser beams characterised by the way of heating the interface scanning at least one of the parts to be joined scanning once, e.g. contour laser 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
    • 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
    • B29C65/16—Laser beams
    • B29C65/1677—Laser beams making use of an absorber or impact modifier
    • B29C65/168—Laser beams 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
    • B29C65/14—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
    • B29C65/16—Laser beams
    • B29C65/1677—Laser beams making use of an absorber or impact modifier
    • B29C65/1683—Laser beams making use of an absorber or impact modifier coated on the article
    • 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
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap 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

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Description

Verfahren zum Verschweißen von Mate@iallagen Es ist bekannt, schlecht schweißbare Materiallagen dadurch zu verschweißen, daß zwischen ihnen eine beispiels weise aus einem Kunststoff bestehende Schweißschicht angeordnet und durch eine von der Sohweißschicht1 aber nicht von den zu verschwei#enden Materiallagen absorbierte Strahlung zum Schmelzen gebracht wird. Die gesch@olzene Kunststoffschicht überträgt die erzeugte Wärmeenergie durch direkte Berührung an die ZU verschweißenden ober@@ächen. Method for welding Mate @ iallagen It is known to be bad to weld weldable layers of material that between them an example wise made of a plastic welding layer and arranged by one of but not absorbed by the layers of material to be welded Radiation is brought to melt. The protected plastic layer transfers the heat energy generated by direct contact with the surfaces to be welded.

Bei dea bekannten Verfahren handelt es sich um Hochfrequenzschweißen beispielsweise schlecht schwei@barer Kunststoffe Unter Zwischenschaltung einer sohweißbaren Schicht oder Folie. Es erfolgt; hier eine dielektrische Absorption einer elektr.omagnetischen Strahlung, die an der Absorptionsstelle Wärme erzeugt. Bei diesem Verfahren ist es erforderlich, die zur Erzeugung der elektronagnetischen Strahlung dienenden Einrichtungen möglichst nahe an die Schwei#stelle heransubringen. Au@erdem ergibt. sich ein verhältnismäßig hoher Energiebedarf.The known method is high-frequency welding for example poorly weldable plastics with the interposition of a weldable one Layer or foil. It takes place; here a dielectric absorption of an electromagnetic one Radiation that generates heat at the point of absorption. With this procedure is it is necessary to use the facilities used to generate the electromagnetic radiation Bring it as close as possible to the welding point. Also results. a proportionate higher Energy requirements.

Nach dem erfindungsgemä#en Vorschlag wird zum Sch@elzen der Schwei#schicht eine Laser-Strahlung mit der Wellenläge wenigstens eines Absorptionsmaxi@ums der aus Kunststoff bestehenden Schwei#schicht verwendet, wobei die mittels der Schweißschicht zu verschweißenden Materiallagen im Maxi@albereich der laser-Strahlung keine erhebliche Absorptionsfähigkeit aufweisen und ber laser und die Materiallagen kontinuierlich relativ zueinander bewegt werden. Die Laser-Strahlung geht durch die Jeweils äußere lage ungeschwächt hindurch und ate gesamte Absorption tritt nur in der dünnen Schweißschicht auf. Ein besonderer Vorteil des erfindungsgemä#en Verfahrens besteht darin, daß die zu verschweißenden Materiallagen mit geringer oder keiner Absorptionsfähigkeit für die Laser-Strahlung beliebig stark sein können. Die gessate Wärmeenergie wird immer an den inneren Berührungsflächen erzeugt, während die Materiallagen außen nicht erwärmt werden. Dieser Vorteil tritt besonders gegenilber den bekannten thermischen Schweißverfahren, sei es durch Strahlungsschwei#ung oder durch Kontaktübertragung, in Erscheinung. Wegen der bekannten scharfen Btindelung der Laser-Energle kann ferner der Strahlungserzeuger weit von der Schweißstelle entfernt angeordnet sein, so daß sich keine Unterbringungsprobleme in der Verarbeitungsmaschine ergeben. According to the proposal according to the invention, the welding layer is used for welding a laser radiation with the wavelength of at least one absorption maxi @ ums the plastic welding layer used, whereby the means of the welding layer The material layers to be welded in the maxi @ al range of the laser radiation are not significant Have absorption capacity and continuously via laser and the material layers are moved relative to each other. The laser radiation goes through the outer one position through it without being weakened and ate total absorption occurs only in the thin layer of sweat on. A particular advantage of the method according to the invention is that the material layers to be welded with little or no absorption capacity for the laser radiation can be arbitrarily strong. The gessate heat energy is always created on the inner contact surfaces, while the material layers are on the outside not be heated. This advantage occurs particularly compared to the known thermal Welding process, be it by radiation welding or by contact transfer, in appearance. Because of the well-known sharp bundling of the laser energy, the radiation generator can be arranged far away from the welding point, so that there are no accommodation problems in the processing machine.

Erfindungsgeiäß kann die Schwei#@chicht aus einer Kunststoff-Folie, vorzugsweise Polyäthylenfolie, bestehen und zwischen di ZU verschwei#@nden Materiallagen eingebracht werden. Andererseits ist es aber such möglich, da; die Schwei#schicht aus einer vorzug@weise aus Polyäthylen bestehenden einseitigen Kunststoffbeschichtung einer oder beider zu verschwei#enden materiallagen besteht. According to the invention, the welding layer can consist of a plastic film, preferably polyethylene film and between the TO weld Material layers are introduced. On the other hand, it is also possible because; the Welding layer consisting of a plastic coating on one side, preferably made of polyethylene one or both material layers to be welded exist.

Bei Verwendung von Polyäthylen als Schwei#sohicht wird vorteilhaft erfindungsg@@ä# ein Helium-@eon-Gasla@er mit einer Wellenlänge der e@@tierten Stralung von 3,3 ~ µ verwendet. 1. können natürlich such Feethörper-Laser verwendet werden, bei die@@n ist aber der @e@@@t-Wirkungsgrad in Verhältnis @ur Krregerensergi@ ungünstiger, weil ein solcher laser auch noch auf and@@en Wellenlängen em@tiert. When using polyethylene as the welding layer it is advantageous Invention g @@ ä # a helium @ eon gas la @ er with a wavelength of the e @@ tierte radiation of 3.3 ~ µ used. 1. Of course, such feet body lasers can be used, with the @@ n the @e @@@ t efficiency in relation to @ur Krregerensergi @ is less favorable, because such a laser also em @@s at and @@ en wavelengths.

Claims (4)

P a t e n t n s p r ü c h e Verfahren z Verschwei#en von hateriallagen, bot welches zwischen zwoi su verschwei#enden Materialschichten eins Schwsi#schicht angeordnet und durch eine von der #chwei@@chicht absorbierte Strahlung zum Sch@el@@n gebracht wird, dadurch gekennzeichnet, da# eine Laser-@trahlung mit der Wellenlänge wenigstens eines Absorptions@aximu@@ der aus Kun@t@toff bestehenden Schw@i#chicht verwendet wir und daß die mittels der Schveißschicht zu verschweißenden materiallagen in maximalbereich der Laser -Strahlung keine erhebliche Absorption@fähigkeit aufweisen, wobei der Laser und die Materiallagen kontinuierlich relativ zueinander bewegt weren. P a t e n t n s p r ü c h e process z welding of haterial layers, offered which one black layer between two welded layers of material arranged and by radiation absorbed by the # chwei @@ chicht to the Sch @ el @@ n is brought, characterized in that # a laser @ radiation with the wavelength at least one absorption @ aximu @@ the black layer consisting of Kun @ t @ toff we used and that the material layers to be welded by means of the welding layer do not have any significant absorption capacity in the maximum range of laser radiation, whereby the laser and the material layers were continuously moved relative to one another. 2. Verfahren nach Anspruch @ , dadurch gekennzeichnet, daß die Schwei#@chicht aus einer Kunststoff-Folie, vorzugsweise Polyäthylenfolie, besteht und ski schon die zu verschwei#enden Materiallagen eingebracht wird.2. The method according to claim @, characterized in that the welding # @ chicht made of a plastic film, preferably polyethylene film, and already ski the material layers to be welded are introduced. 3. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, daß die Schwei#schicht aus einer vor@ugsweise aus Polyäthylen bestehenden Kunst@toffbeschichtung einer oder beider zu verachwei#enden Materiallagen besteht.3. The method according to claim 1, characterized in that the welding layer from a plastic coating, preferably made of polyethylene or both material layers to be verified exist. 4. Verfahren nach ein@m der Ansprüche 1 bis 3, dadurch gekennzeichnet, da# ein Helium-Neon-Gaslaser mit einer Wellenlänge der @@@ttierten Strahlung von 3,3 ~ 0,2 µ verwendet wird.4. The method according to a @ m of claims 1 to 3, characterized in that da # a helium-neon gas laser with a wavelength of the @@@ ttiert radiation of 3.3 ~ 0.2 µ is used.
DE19661629225 1966-07-07 1966-07-07 Process for welding layers of material Pending DE1629225A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEW0041964 1966-07-07

Publications (1)

Publication Number Publication Date
DE1629225A1 true DE1629225A1 (en) 1971-01-07

Family

ID=7603031

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19661629225 Pending DE1629225A1 (en) 1966-07-07 1966-07-07 Process for welding layers of material

Country Status (1)

Country Link
DE (1) DE1629225A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19947437A1 (en) * 1999-10-02 2001-04-05 Valeo Schalter & Sensoren Gmbh Sensor for use in motor vehicle management system is laser welded to housing
EP1297944A1 (en) * 2001-09-29 2003-04-02 Institut für angewandte Biotechnik und Systemanalyse an der Universität Witten/Herdecke GmbH Process for laser beam welding of plastic parts
US6656315B2 (en) 2000-11-10 2003-12-02 Gentex Corporation Visibly transparent dyes for through-transmission laser welding
EP0751865B2 (en) † 1994-03-31 2004-07-14 Marquardt GmbH Plastic workpiece and process for producing it
US6770158B2 (en) 2002-01-15 2004-08-03 Gentex Corporation Quality management system for pre-processed workpiece

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0751865B2 (en) † 1994-03-31 2004-07-14 Marquardt GmbH Plastic workpiece and process for producing it
DE19947437A1 (en) * 1999-10-02 2001-04-05 Valeo Schalter & Sensoren Gmbh Sensor for use in motor vehicle management system is laser welded to housing
US6656315B2 (en) 2000-11-10 2003-12-02 Gentex Corporation Visibly transparent dyes for through-transmission laser welding
US6911262B2 (en) 2000-11-10 2005-06-28 Gentex Corporation Visibly transparent dyes for through-transmission laser welding
US7276136B2 (en) 2000-11-10 2007-10-02 Gentex Corporation Visibly transparent dyes for through-transmission laser welding
EP1297944A1 (en) * 2001-09-29 2003-04-02 Institut für angewandte Biotechnik und Systemanalyse an der Universität Witten/Herdecke GmbH Process for laser beam welding of plastic parts
US6770158B2 (en) 2002-01-15 2004-08-03 Gentex Corporation Quality management system for pre-processed workpiece
US7201963B2 (en) 2002-01-15 2007-04-10 Gentex Corporation Pre-processed workpiece having a surface deposition of absorber dye rendering the workpiece weld-enabled
US7344774B2 (en) 2002-01-15 2008-03-18 Gentex Corporation Pre-processed workpiece having a surface deposition of absorber dye rendering the workpiece weld-enabled

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