EP2139614A1 - Procédé de revêtement d'un joint soudé ou collé d'un récipient, récipient fabriqué selon ce procédé, et dispositif associé pour la mise en oeuvre du procédé - Google Patents

Procédé de revêtement d'un joint soudé ou collé d'un récipient, récipient fabriqué selon ce procédé, et dispositif associé pour la mise en oeuvre du procédé

Info

Publication number
EP2139614A1
EP2139614A1 EP07846334A EP07846334A EP2139614A1 EP 2139614 A1 EP2139614 A1 EP 2139614A1 EP 07846334 A EP07846334 A EP 07846334A EP 07846334 A EP07846334 A EP 07846334A EP 2139614 A1 EP2139614 A1 EP 2139614A1
Authority
EP
European Patent Office
Prior art keywords
coating
seam
container
weld
nozzle
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.)
Withdrawn
Application number
EP07846334A
Other languages
German (de)
English (en)
Inventor
Peter Bartsch
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.)
VVIKO HOLDING GMBH
Original Assignee
Billhofer Maschinenfabrik & Co KG GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Billhofer Maschinenfabrik & Co KG GmbH filed Critical Billhofer Maschinenfabrik & Co KG GmbH
Publication of EP2139614A1 publication Critical patent/EP2139614A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/26—Processes for applying liquids or other fluent materials performed by applying the liquid or other fluent material from an outlet device in contact with, or almost in contact with, the surface
    • 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
    • B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
    • B23K33/004—Filling of continuous seams
    • B23K33/006—Filling of continuous seams for cylindrical workpieces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D7/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal
    • B65D7/02—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by shape
    • B65D7/04—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by shape of curved cross-section, e.g. cans of circular or elliptical cross-section
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D7/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal
    • B65D7/12—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls
    • B65D7/34—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls with permanent connections between walls
    • B65D7/38—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls with permanent connections between walls formed by soldering, welding, or otherwise uniting opposed surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2254/00—Tubes
    • B05D2254/02—Applying the material on the exterior of the tube
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2254/00—Tubes
    • B05D2254/04—Applying the material on the interior of the tube
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/06—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation
    • B05D3/061—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation using U.V.
    • B05D3/065—After-treatment
    • B05D3/067—Curing or cross-linking the coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/10—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by other chemical means
    • B05D3/107—Post-treatment of applied coatings
    • B05D3/108—Curing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/22—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes
    • B05D7/227—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes of containers, cans or the like
    • 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
    • B23K2101/125—Cans
    • 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
    • B23K2101/18—Sheet panels
    • 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 ; Surface treated articles

Definitions

  • the invention relates to a method for coating a welded or glued seam of a container provided with a glued foil on at least one side, except for the area of the seam, which is fed by a conveyor to a coating station for applying a coating mass to the weld seam or adhesive seam.
  • the lids, bottoms and the container or can body are punched and formed from flat blanks.
  • the flat blanks can be printed, painted, coated with adhesive-laminated film, or otherwise coated.
  • the can body blank is formed in a directly sequential process steps to a cylinder and welded on the longitudinal side butting or overlapping or underlapped. It is also known that instead of a weld, a connection is made by gluing the longitudinal seam.
  • the welding of the longitudinal sides of the cylindrical container requires in the intended area of the weld inside and outside bare, uncoated metal surfaces. For this purpose, these surfaces are recessed in the previous coating of the flat blank in a width of a few millimeters per side on both sides of the blank.
  • container or can hulls already aligned by the welding station of the welding machine are coated on the inside, for example, with powder coating or other lacquers in the area of the weld corresponding to the length of the container or can body.
  • EP 0 623 392 A1 a method is proposed in which the inner weld of a container or can body after the welding station with a thermoplastic coating or covering material, for example a hotmelt consisting of polyamide, polyethylene and polyester, by means of a nozzle as Strip is applied to the weld area.
  • a thermoplastic coating or covering material for example a hotmelt consisting of polyamide, polyethylene and polyester
  • Strip a nozzle as Strip
  • the invention has for its object to provide a method for coating a welded or glued seam of a container, which is used in containers provided with a film.
  • the overlapping coating completely covers the bare area of the container in the area of the weld seam or adhesive seam, without the foil laminated by means of an adhesive being affected by excessive temperatures.
  • the containers produced by the method according to the invention are protected from aggressive or corrosive media by the coating composition, which overlaps the area of the weld seam or adhesive seam, so that the containers can be used for food.
  • a double-sided coating or covering of the welds or adhesive seams to be protected from corrosion can be achieved inside and outside, so that the containers produced in this way can also be used in products that place high demands on the corrosion resistance of the container.
  • the coating composition is liquefied in a melting tank and conveyed to the nozzle or nozzles by means of at least one pump.
  • a double pump may be provided so that each nozzle is associated with a pump.
  • the pumps are speed controlled so that the delivered amount of the coating mass can be accurately adjusted.
  • the reflow tank and the nozzles are connected by heatable hoses or pipes, so that the Coating mass is processed and discharged at the optimum temperature.
  • the coating station is designed as a circulation-free dead-end system, in which the entire coating material conveyed to the nozzles is dispensed via the nozzles.
  • each nozzle is associated with a controllable valve, via which the distance or the duration of the application of the coating composition is adjustable.
  • the device can be operated clocked, wherein preferably a sensor for detecting the beginning and / or the end of a container is provided during the promotion and the valve is controlled by the signal detected by the sensor.
  • a nozzle has a pair of lips for dispensing the coating composition, wherein a lip or preferably both lips to the curvature of Container are curved curved shape.
  • provision may be made for one lip or both lips to have a recess whose width is matched to the desired coating width and whose depth is adapted to the desired thickness of the coating compound.
  • the distance between the pair of lips and the container may be adjustable manually or via a drive.
  • a reactive hotmelt adhesive is used as the coating composition, in particular a polyester-based hotmelt or a hotmelt adhesive based on UV-curing or moisture-curing polyurethane prepolymers.
  • a coating composition in particular a polyester-based hotmelt or a hotmelt adhesive based on UV-curing or moisture-curing polyurethane prepolymers.
  • These are compositions of coating compounds that guarantee optimum adhesion to both the bare weld or adhesive seam surfaces as well as to the adjacent film and adhesive cut edges overlapping.
  • the Processing temperature for the coating composition may be between 80 0 C and 170 0 C, in particular, it may be 100 0 C to 150 0 C.
  • the invention relates to a container with a welded or glued seam, which has at least one side except for the region of the seam a glued or laminated foil.
  • the weld or adhesive seam is sealed with a coating material overlapping the film.
  • the container may have on both sides except for the area of the seam a glued foil and the weld or glued seam may be sealed on both sides with a coating overlapping the film.
  • the invention relates to an apparatus for coating a welded or glued seam of a container provided with a foil on both sides of the seam, with a conveyor to feed the container to a coating station, which is designed to apply a coating mass to the weld seam or adhesive seam.
  • the coating station has a first nozzle for overlapping coating of the outside of the weld seam or adhesive seam and a second nozzle for overlapping coating of the inside of the weld seam or adhesive seam.
  • FIG. 1 shows a film-coated can body blank
  • FIG. 2 shows a joint-to-joint weld of a can body in a sectional view
  • FIG. 3 shows a lap weld of a can body in a sectional view
  • Fig. 4 shows an inventive device for coating a
  • Fig. 6 die lips of the device according to the invention.
  • FIG. 7 shows the weld seam shown in FIG. 2 after the coating
  • Fig. 1 shows a film-coated can body blank 1, which is formed as a flat sheet metal and punched out of a metal sheet.
  • the can body blank 1 is coated with a laminated film 2, uncoated are only the opposite side strips 3, 4, which are blank, so that they can be welded.
  • the can body blanks 1 are bent into a ring with a conventional device and welded.
  • Fig. 2 shows a butt weld joint of a can body.
  • both the top and the bottom of the can body 5 are provided with a film 6, 7, except for the area immediately adjacent to the weld 8, depending on the intended use of the can bodies cover these bare areas next to the weld seam 8 to protect against corrosion.
  • Fig. 3 shows an overlap weld of a can body.
  • the can body 9 shown in FIG. 3 after welding in the area of the overlap, there are bare areas 10, 11 on the outside and the inside of the can body 9, which likewise have to be provided with a coating mass in order to meet the requirements for corrosion protection ,
  • Fig. 4 shows the main components of a device according to the invention for coating a weld.
  • an upstream welding station on which the flat sheet metal blanks are bent annularly and then welded in the longitudinal direction. Since such machines are known per se, they are not explained in detail here.
  • the welded can bodies 12 After passing through the welding station, the welded can bodies 12 reach the coating station 13.
  • the coating station 13 comprises a first nozzle 14 for coating the outside of the weld and a second nozzle 15 for coating the inside of the weld. Both nozzles 14, 15 are connected via heatable lines 16, 17 with a reflow tank 22, in which the coating agent is liquefied and heated.
  • the coating mass is pumped by a pump 27 from the reflow vessel 22 via the lines 16, 17 to the nozzles 14, 15.
  • the coating material used is a reactive hotmelt adhesive which consists of UV-curing or moisture-curing polyurethane prepolymers.
  • a polyester based melt can be used. This material has the advantage that it reacts for a short time after exiting the nozzle, so that for example after 15 seconds a surface-resistant and after about 30 seconds a mechanically loadable coating is present without a cooling station or the like is required.
  • the can body 12 is transported by a conveyor not shown in the longitudinal direction of the can body 12 between the nozzles 14, 15.
  • a controllable valve 23, 24 is integrated, which controls the delivery of the hot melt adhesive precisely.
  • a sensor 25 which may be formed, for example, as a photoelectric or optical or electrical sensor is detected when the beginning of the can body 12 passes a certain place. Accordingly, the end of the can body 12 is detected by a sensor 26.
  • the nozzles 14, 15 are controlled so that at the same time the outer weld and the inner weld are coated with the hot melt adhesive.
  • Fig. 5 shows schematically the nozzles of the device during the coating of the welds.
  • the nozzles 14, 15 each a precisely adapted to the width of the area to be coated of the can body 12 amount of the hot melt adhesive is discharged, this process takes place simultaneously on the outside and the inside of the can body 12.
  • the nozzles 14, 15, the hot melt adhesive 18 and the can body 12 are shown in Fig. 5 spaced.
  • Fig. 6 shows nozzle lips of the device in an enlarged view.
  • Each nozzle comprises a pair of nozzle lips 19, 20, whose lip flanks are radially curved, this radius corresponding to the radius of the weld to be coated.
  • the nozzle lip 20 has in the center of a stepped recess 21, the width of the desired coating width and the depth of the desired coating thickness corresponds.
  • Fig. 7 shows the butt-to-joint weld 8 of the can body 5 of Fig. 2 after coating.
  • the bare end portions of the can body 5 and the weld 8 are covered with coating compounds 26, 27 which overlap the films 6, 7 on the inside and outside of the can body 5, so that the bare end portions and the weld are completely covered and sealed.
  • Fig. 8 shows the overlap weld of the can body 9 after coating.
  • the bare areas 10, 11 of the can body 9 are covered by the coating compounds 26, 27, which also overlap the films on both sides of the can body 9.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Coating Apparatus (AREA)

Abstract

L'invention concerne un procédé de revêtement d'un joint soudé ou collé d'un récipient pourvu d'un film collé au moins sur un côté jusque sur la région du joint, récipient qui est cédé par un équipement de transport à un poste de revêtement pour l'application d'une matière de revêtement sur le joint soudé ou le joint collé. La face extérieure ou la face intérieure du joint soudé ou du joint collé reçoit un revêtement couvrant au moyen d'une buse, la matière de revêtement utilisée étant une colle thermofusible réactive.
EP07846334A 2006-11-21 2007-11-14 Procédé de revêtement d'un joint soudé ou collé d'un récipient, récipient fabriqué selon ce procédé, et dispositif associé pour la mise en oeuvre du procédé Withdrawn EP2139614A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006055112A DE102006055112A1 (de) 2006-11-21 2006-11-21 Vorrichtung zum Beschichten einer geschweißten oder geklebten Naht eines Behälters, zugehöriges Verfahren und nach diesem Verfahren hergestellter Behälter
PCT/DE2007/002058 WO2008061498A1 (fr) 2006-11-21 2007-11-14 Procédé de revêtement d'un joint soudé ou collé d'un récipient, récipient fabriqué selon ce procédé, et dispositif associé pour la mise en oeuvre du procédé

Publications (1)

Publication Number Publication Date
EP2139614A1 true EP2139614A1 (fr) 2010-01-06

Family

ID=39154088

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07846334A Withdrawn EP2139614A1 (fr) 2006-11-21 2007-11-14 Procédé de revêtement d'un joint soudé ou collé d'un récipient, récipient fabriqué selon ce procédé, et dispositif associé pour la mise en oeuvre du procédé

Country Status (3)

Country Link
EP (1) EP2139614A1 (fr)
DE (1) DE102006055112A1 (fr)
WO (1) WO2008061498A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2973262B1 (fr) * 2011-04-04 2013-04-05 Peugeot Citroen Automobiles Sa Procede de protection anticorrosion d'elements de structure d'un vehicule automobile

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DE743130C (de) * 1942-01-29 1943-12-18 Blechwarenfabrik Vorrichtung zum beidseitigen Lackieren der Laengsnaehte von Blechdosenruempfen
US3526027A (en) * 1967-05-29 1970-09-01 Continental Can Co Apparatus for coating side seam areas of containers
US3995075A (en) * 1974-04-18 1976-11-30 Continental Can Company, Inc. Inside stripe by intermittent exterior spray guns
US4456804A (en) * 1982-07-13 1984-06-26 Campbell Soup Company Method and apparatus for application of paint to metal substrates
FR2546080B1 (fr) * 1983-05-20 1987-02-13 Fives Cail Babcock Buse d'atomisation
DD247391A1 (de) * 1986-04-02 1987-07-08 Bmk Ost Betr F P T Veb Vorrichtung zum streifenfoermigen auftragen von schmelzklebstoffen auf folienbahnen
JPH0624659B2 (ja) * 1986-06-04 1994-04-06 北海製罐株式会社 缶胴体の塗装方法および塗装装置
DE3809756C2 (de) * 1988-03-23 1996-02-29 Hoerauf Michael Maschf Vorrichtung zum Auftragen von Klebstoff auf einen Behältermantel
JPH01310774A (ja) * 1988-06-08 1989-12-14 Toyo Seikan Kaisha Ltd 被覆溶接罐の製造法
DE9115177U1 (de) * 1991-12-06 1992-02-13 Heinrich Bühnen KG, Maschinenfabrik, Im- und Export, 2800 Bremen Vorrichtung zur Beschichtung von Stoffbahnen
EP0623392A1 (fr) * 1993-05-07 1994-11-09 Nordson Corporation Procédé et dispositif pour revêtir de matériau thermoplastique des joints intérieurs de boîtes
JP2806249B2 (ja) * 1994-02-17 1998-09-30 東洋製罐株式会社 大型角形缶およびその製造方法
US6117490A (en) * 1996-10-02 2000-09-12 Matsushita Electric Industrial Co, Ltd. Coating material application method and an apparatus for use in such a method
DE102004002421A1 (de) * 2004-01-16 2005-08-18 Atotech Deutschland Gmbh Düsenanordnung
US7291362B2 (en) * 2004-01-20 2007-11-06 3M Innovative Properties Company Method and apparatus for controlling coating width
DE102005026050A1 (de) * 2005-06-03 2006-12-07 Sca Schucker Gmbh & Co. Kg Verfahren zum Aufbringen von Raupen einer pastösen Masse

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Also Published As

Publication number Publication date
WO2008061498A1 (fr) 2008-05-29
DE102006055112A1 (de) 2008-05-29

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