NO158663B - Fremgangsm te og anordning for sammensveising av pller plastbelagte flater - Google Patents

Fremgangsm te og anordning for sammensveising av pller plastbelagte flater Download PDF

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Publication number
NO158663B
NO158663B NO860643A NO860643A NO158663B NO 158663 B NO158663 B NO 158663B NO 860643 A NO860643 A NO 860643A NO 860643 A NO860643 A NO 860643A NO 158663 B NO158663 B NO 158663B
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Norway
Prior art keywords
reflection body
laser beam
plastic
container
reflection
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Application number
NO860643A
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English (en)
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NO860643L (no
NO158663C (no
Inventor
Hans Dyre-Hansen
Bernt Thorstensen
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Elopak As
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Application filed by Elopak As filed Critical Elopak As
Priority to NO860643A priority Critical patent/NO158663C/no
Priority to ES198787301168T priority patent/ES2030056T3/es
Priority to AT87301168T priority patent/ATE74061T1/de
Priority to DE8787301168T priority patent/DE3777676D1/de
Priority to EP87301168A priority patent/EP0237192B1/en
Publication of NO860643L publication Critical patent/NO860643L/no
Publication of NO158663B publication Critical patent/NO158663B/no
Publication of NO158663C publication Critical patent/NO158663C/no

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—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
    • 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
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
    • B23K26/067—Dividing the beam into multiple beams, e.g. multifocusing
    • B23K26/0676—Dividing the beam into multiple beams, e.g. multifocusing into dependently operating sub-beams, e.g. an array of spots with fixed spatial relationship or for performing simultaneously identical operations
    • 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
    • B29C65/1632—Laser beams characterised by the way of heating the interface direct heating the surfaces to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
    • B29C66/4326—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms for making hollow articles or hollow-preforms, e.g. half-shells
    • 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
    • B29C66/73—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
    • B29C66/7392—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 characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—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 characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • 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
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/04—Tubular or hollow articles
    • B23K2101/12—Vessels
    • 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
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/34—Coated articles, e.g. plated or painted; Surface treated articles
    • 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
    • B23K2103/08—Non-ferrous metals or alloys
    • 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
    • B29C65/1645—Laser beams characterised by the way of heating the interface heating both sides of the joint, e.g. by using two lasers or a split beam
    • 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
    • B29C65/1687—Laser beams making use of light guides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
    • B29C66/7232—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer
    • B29C66/72321—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer consisting of metals or their alloys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
    • B29C66/7232—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer
    • B29C66/72327—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer consisting of natural products or their composites, not provided for in B29C66/72321 - B29C66/72324
    • B29C66/72328—Paper
    • 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
    • B29L2009/003—Layered products comprising a metal layer
    • 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
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Optics & Photonics (AREA)
  • Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • Toxicology (AREA)
  • Plasma & Fusion (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Surface Treatment Of Glass Fibres Or Filaments (AREA)

Description

Oppfinnelsen vedrører en fremgangsmåte samt en anordning for sammensveising av plast- eller plastbelagte flater ved hjelp av laserstråleoppvarming.
Beholdere beregnet på flytende matvareprodukter såsom meieriprodukter, leskedrikker eller juice er vanligvis frem-stilt av termoplastbelagt papp, men kan også fremstilles helt av papp. Slike beholdere fremstilles av et plant emne som er utstyrt med bretteanvisninger i form av rillelinjer og som brettes sammen vanligvis til et rektangulært rørformet legeme som lukkes på egnet måte ved bunn og topp. Ved sammensetningen til et rørformet legeme blir ved bruken av kun et utgangsemne en flik sammenføyet med et sidekantområde på en sideflate hvorved det er av stor betydning at det herved oppnås en fullstendig tett forsegling. Den vanlige måte å foreta denne sammenføyning eller forsegling på er ved hjelp av lim-stoffer eller ved utøvelsen av varme som bevirker en sammen-smeltning av plastflåtene.
Denne teknikk er imidlertid vanskelig å gjennomføre hurtig og effektivt i en produksjonslinje hvis det samtidig skal være garantert en lekkasjefri søm. En vanskelighet som også opptrer i denne forbindelse er at begge de flater som skal bringes i kontakt med hverandre bør oppvarmes relativt jevnt og likt slik at man får en jevn sammenføyning. Da det herved også dreier seg om flater som ligger overfor hverandre kan det, for å oppnå den ønskede oppvarming være nødvendig å holde flaten i relativ stor avstand fra hverandre for å kunne utøve den nødvendige varmepåvirkning, hvorved det frem-kommer fare for at flatene igjen blir avkjølt på ukontrollert måte før de sammeføyes.
Hensikten med foreliggende oppfinnelse er å tilveiebringe en fremgangsmåte samt en anordning som muliggjør en sammensveisning av to plast- eller plastbelagte flater hvor disse ulemper unngås og hvormed det kan sikres en helt jevn oppvarming av de to ovenfor hverandre plasserte flater.
Denne hensikt oppnås ved bruk av en laser som oppvar-mingsinnretning og oppfinnelsen er kjennetegnet ved det som fremgår av kravene.
I europeisk patentsøknad 0147833 er det beskrevet bruken av laserstråler for smelting eller mykgjøring av to sidesøm-flater som skal sammensveises. Det er der beskrevet en innret-ning med hvilken laserstrålen splittes, slik at det med den samme stråle, samtidig kan oppvarmes to flateområder. Ved en annen utførelse er de to flater som skal sammensveises anbragt i vinkel i forhold til hverandre og laserstrålen bringes til å stråle inn i vinkelen hvorved flatene oppvarmes og mykgjøres slik at det kan oppnås en sammensmelting. Denne metode som er særlig egnet ved flater som inneholder en metall-folie i sin sammensetning vil føre til refleksjoner mellom de to skrått til hverandre stående sideflater, noe som vil føre til en ujevn oppvarming og usikkerhet med hensyn til sammenføyningens endelige tetthet. Ved oppfinnelsen er dette problem unngått ved bruken av refleksjonslegemet som vil sørge for at kun et nøyaktig definert flateområde vil bli oppvarmet hvorved også oppvarmingen av begge flater vil bli lik slik at det oppnås et best mulig resultat. Det kan derved også benyttes en lavere energi for laserstrålen. På samme måte som i den ovennevnte europeiske søknad benyttes en ufokusert laserstråle. Refleksjonslegemet anbringes i sømflåtenes lengderetning og disse føres inn med en flate på hver side av refleksjonslegemet og transporteres i lengderetningen over refleksjonslegemet hvoretter de presses sammen til en tett forbindelse etter forbipasseringen.
Ytterligere trekk ved oppfinnelsen vil fremgå av den følgende beskrivelse av et utførelseseksempel som rent skjema-tisk er vist på tegningen og viser i et sideriss prinsippet på laserstråleoppvarming via et refleksjonslegeme av to flater som skal sammensmeltes.
Tegningen viser i et enderiss et emne for en termoplastbelagt beholder som skal sammenføyes langs en sidekant. Papp-beholderen kan være belagt på sine ytterflater med termoplast, f.eks. polyetylen og kan hvis ønsket også innbefatte en metall-folie, f.eks. en aluminiumsfolie. I et første sammensetnings-trinn for beholderen blir emnet som på figuren er betegnet med 1, brettet slik at to og to sideflater ligger mot hverandre. De fire sideflater i den ønskede rektangulære beholder er betegnet med 2, 3, 4 og 5. I tillegg er emnet utstyrt med en sideflik 6 som skal danne sidesøm-forbindelsen med ende-partiet av sideflaten 5. De enkelte sidedeler av beholderen er skilt fra hverandre ved hjelp av rillelinjer 7, 8, 9 og 10, idet ved det trinn av fremstillingen som er vist på tegningen kartongemnet er brettet ved rillelinjene 7 og 9 slik at flatene 2 og 3 ligger mot hverandre, mens flatene 4 og 5 dan-ner en spiss vinkel i forhold til hverandre. Beholderemnet kan foreligge enten i form av enkeltemner for hver beholder, ført etter hverandre eller som en bane beregnet for oppdeling på tvers ved et senere arbeidstrinn, før sammensetningen av bunn og toppdel. En slik fremstillingsprosess for en beholder er vanlig, kjent teknikk.
For å tilveiebringe sammensveisningen av sidekantområ-dene transporteres beholderemnet i den stilling som er vist på figuren i sideretning, dvs. på tvers av papirplanet inn over et refleksjonslegeme 12, idet beholderemnet 1 anbringes slik i forhold til refleksjonslegemet 12 at legemet 12 vil avgrense de to flater som skal sammensveises, dvs. det indre flateområde il på flaten 5 og sidesømfliken 6, som begge har en lengde som på figuren er betegnet med x. For oppvarming av disse flater stråles en laserstråle 13 inn mot refleksjonslegemet 12 som i det viste utførelseseksempel er et refleksjons-prisme som er symmetrisk anbragt, slik at laserstrålen reflek-teres likt til begge sider mot de to flater som skal sammensmeltes. Dette skjer kontinuerlig samtidig som emnet 1 transporteres videre i sideretningen. Ved riktig valg av laserstrå-lens intensitet i forhold til refleksjonsprismets 12 lengde, vil det oppnås en ønsket mykgjøring eller smelting av de to sideflater, som etter at de har forlatt området med reflek-sjonsprismet kan presses sammen på kjent måte og derved danne en jevn og god sammensmelting eller sammensveising.
På grunn av den sterke intensitet for laserstrålen vil den oppvarming skje meget hurtig, slik at sammensmeltnings-prosessen kan gjennomføres på en bearbeidelsesbane som frem-fører emnene 1 med relativt stor hastighet.
Det skal påpekes at refleksjonslegemet 12 ikke nødvendig-vis behøver å være et prisme, men at dette kan utformes på ønsket måte, idet det kun må tas hensyn til at oppnås en jevn fordeling av laserstrålen mot begge de flater som skal myk-gjøres. De nødvendige innstillinger vil lett kunne foretas av en fagmann på området.

Claims (4)

1. Fremgangsmåte for sammensveising av plast- eller plastbelagte flater ved hjelp av laserstråleoppvarming, særlig ved sammenføyning av sidesømmen på en beholder (1), karakterisert ved at det mellom de flateområder (6,11) som skal sammensmeltes anbringes et refleksjonslegeme (12) med flater som har en, til sammensmeltingsflåtene loddrett refleksjonsvinkel, at laserstrålen (13) slås på mens de flater (6,11) som skal sammensmeltes føres forbi i reflek-sjonslegemets (12) lengderetning og at flatene (6,11) presses sammen og smeltes sammen etter å ha forlatt området ved refleksjonslegemet (12).
2. Fremgangsmåte ifølge krav 1, karakterisert ved at flatene (6,11) som skal sammensveises, holdes i en spiss vinkel til hverandre mens de føres forbi refleksjonslegemet (12) og at refleksjonslegemet (12) og flatene (6,11) som skal sammensveises holdes slik i forhold til hverandre at refleksjonslegemet (12) vil avgrense det område som skal oppvarmes for sammensveising.
3. Anordning for sammensveising av plast- eller plastbelagte flater ved hjelp av laserstråleoppvarming, særlig for sammensmelting av den langsgående sidesøm for et emne (1) for et rørformet beholderlegeme, karakterisert ved en laserstrålesender, at det i senderens stråleområde er anordnet et refleksjonslegeme (12) og at det for beholderemnet (1) er anordnet en transport-innretning som holder emnet (1) med de to flater (6,11) som skal sammensveises på hver sin side av refleksjonslegemet (12), avgrenset av dettes endekanter og symmetrisk i forhold til refleksjonslegemet (12), og at transportøren er utformet for transport av emnet (1) på tvers av refleksjonslegemet (12).
4. Anordning ifølge krav 3, karakterisert ved at refleksjonslegemet (12) er et reflekterende prisme.
NO860643A 1986-02-20 1986-02-20 Fremgangsmaate og anordning for sammensveising av plast- eller plastbelagte flater NO158663C (no)

Priority Applications (5)

Application Number Priority Date Filing Date Title
NO860643A NO158663C (no) 1986-02-20 1986-02-20 Fremgangsmaate og anordning for sammensveising av plast- eller plastbelagte flater
ES198787301168T ES2030056T3 (es) 1986-02-20 1987-02-11 Metodo y dispositivo para unir por soldadura superficies de plastico o recubiertas de plastico.
AT87301168T ATE74061T1 (de) 1986-02-20 1987-02-11 Verfahren und vorrichtung zum schweissen von kunststoff- oder kunststoffbeschichteten flaechen.
DE8787301168T DE3777676D1 (de) 1986-02-20 1987-02-11 Verfahren und vorrichtung zum schweissen von kunststoff- oder kunststoffbeschichteten flaechen.
EP87301168A EP0237192B1 (en) 1986-02-20 1987-02-11 A method and a device for welding together plastic or plastic covered surfaces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO860643A NO158663C (no) 1986-02-20 1986-02-20 Fremgangsmaate og anordning for sammensveising av plast- eller plastbelagte flater

Publications (3)

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NO860643L NO860643L (no) 1987-08-21
NO158663B true NO158663B (no) 1988-07-11
NO158663C NO158663C (no) 1988-10-19

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NO860643A NO158663C (no) 1986-02-20 1986-02-20 Fremgangsmaate og anordning for sammensveising av plast- eller plastbelagte flater

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EP (1) EP0237192B1 (no)
AT (1) ATE74061T1 (no)
DE (1) DE3777676D1 (no)
ES (1) ES2030056T3 (no)
NO (1) NO158663C (no)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0483637A (ja) * 1990-07-26 1992-03-17 Du Pont Mitsui Polychem Co Ltd 紙容器用筒状部材の製造方法
GB2271312A (en) * 1992-10-08 1994-04-13 Forward Engineering Limited Welding using radiant heat
DE19750263A1 (de) * 1997-11-13 1999-05-20 Iwk Verpackungstechnik Gmbh Verfahren und Vorrichtung zum Verschließen einer Kunststoff-Tube in einer Tubenfüllmaschine
DE19815439A1 (de) * 1998-04-07 1999-10-14 Tetra Laval Holdings & Finance Verfahren zum Verschweißen von laminatförmigen Verpackungsmaterialien
FR2785564B1 (fr) * 1998-11-10 2000-12-08 Cebal Traitement de materiaux au laser, notamment de decoupage ou de soudure
FR2805198A1 (fr) * 2000-02-17 2001-08-24 Cebal Procede de fabrication de tubes par soudure au laser
JP2006513067A (ja) 2003-01-24 2006-04-20 メドトロニック ヴァスキュラー インコーポレイテッド 溶接プラスチック接合部の溶接後ネック付け
FI117747B (fi) * 2004-01-13 2007-02-15 Stora Enso Oyj Menetelmä ja laite muovipinnoitteisen paperin tai kartongin saumaamiseksi
FI20065420A0 (fi) * 2006-06-19 2006-06-19 Huhtamaeki Oyj Menetelmä ja laitteisto kartonkikuppien valmistamiseksi
CN103317728B (zh) * 2013-06-27 2016-03-09 江苏联浩科技有限公司 卷烟包装箱的焊接工艺方法

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Publication number Priority date Publication date Assignee Title
US3016085A (en) * 1959-01-05 1962-01-09 Holweg Const Mec Apparatus for heat sealing a thermoplastic web in which the heat is controlled by the speed of the web
US3408242A (en) * 1963-03-19 1968-10-29 Windmoeller & Hoelscher Process and apparatus for welding layers of thermoplastic material
FR2118531A5 (no) * 1970-12-14 1972-07-28 Little Inc Arthur
US4540392A (en) * 1983-12-23 1985-09-10 International Paper Company Method and apparatus to seal coated paperboard materials

Also Published As

Publication number Publication date
DE3777676D1 (de) 1992-04-30
EP0237192A2 (en) 1987-09-16
ATE74061T1 (de) 1992-04-15
NO860643L (no) 1987-08-21
NO158663C (no) 1988-10-19
EP0237192B1 (en) 1992-03-25
ES2030056T3 (es) 1992-10-16
EP0237192A3 (en) 1989-09-06

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