EP0882655B1 - Metal can with heat sealed foil lid and its method of manufacture - Google Patents

Metal can with heat sealed foil lid and its method of manufacture Download PDF

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Publication number
EP0882655B1
EP0882655B1 EP97109073A EP97109073A EP0882655B1 EP 0882655 B1 EP0882655 B1 EP 0882655B1 EP 97109073 A EP97109073 A EP 97109073A EP 97109073 A EP97109073 A EP 97109073A EP 0882655 B1 EP0882655 B1 EP 0882655B1
Authority
EP
European Patent Office
Prior art keywords
cylindrical body
adhesive
lid
line
tin
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.)
Expired - Lifetime
Application number
EP97109073A
Other languages
German (de)
French (fr)
Other versions
EP0882655A1 (en
Inventor
Bernard Jeannin
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.)
Societe des Produits Nestle SA
Nestle SA
Original Assignee
Societe des Produits Nestle SA
Nestle SA
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 Societe des Produits Nestle SA, Nestle SA filed Critical Societe des Produits Nestle SA
Priority to EP97109073A priority Critical patent/EP0882655B1/en
Priority to AT97109073T priority patent/ATE208321T1/en
Priority to ES97109073T priority patent/ES2164959T3/en
Priority to DE69708061T priority patent/DE69708061T2/en
Publication of EP0882655A1 publication Critical patent/EP0882655A1/en
Application granted granted Critical
Publication of EP0882655B1 publication Critical patent/EP0882655B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
    • B21D51/2653—Methods or machines for closing cans by applying caps or bottoms
    • B21D51/2661—Sealing or closing means therefor

Definitions

  • the invention relates to tinplate packaging and its manufacturing process.
  • the purpose of the present invention is to make available from the consumer a tin can with perfect waterproof and cheaper than the one currently on the market.
  • the product contained in the packaging according to the invention is not critical. This can be a food product or any other oxygen-sensitive product, such as coffee soluble, roasted and ground coffee and powdered milk.
  • Tinplate is a material known to those skilled in the art. he it is iron covered with tin.
  • the present invention overcomes this problem by when glue is deposited in the critical area of the weld.
  • glue used is not critical. It is sufficient that this glue is compatible in the food sector, if we package food and it is hot-melt to then allow the seal to be welded aluminum.
  • the invention also relates to the manufacturing process a package according to the invention, in which a cylindrical body welded in tinplate, the spraying a line of glue inside said body cylindrical in the weld zone at the level of the zone intended to receive a heat-sealed lid, a aluminum cover inside the cylindrical body in the area of the glue line, we turn the body over cylindrical so as to fill the the packaging and a bottom is crimped onto the cylindrical body.
  • the production line includes a spraying system either continuously or discontinuously. Yes we work continuously, we have to plan behind the place of spraying an adhesive recovery panel.
  • the packaging according to the invention (1) comprises a body cylindrical (2) tin, a bottom (3) crimped on said body (2) and a seal (4) heat sealed on the inside of the cylindrical body.
  • a line of glue (7) to avoid any risk leakage of the closure of the lid in the region of said weld.
  • the cover (4) is welded to the interior of the body (2) over a height a: this height is preferably between 2 and 5 mm, so that be sure of the tightness. So we have a packaging allowing good conservation of any product sensitive to oxygen, especially coffee powder or milk powder.
  • Figure 1 shows the cover (4) before the step of welding: this cover has a tongue (5) to facilitate opening. At time use, the consumer pulls on the tab (5) of so as to delaminate said cover. It is also planned a cover (not shown) allowing reclosing of packaging after first opening.
  • hot melt adhesive Any type of hot melt adhesive can be used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
  • Packages (AREA)
  • Packging For Living Organisms, Food Or Medicinal Products That Are Sensitive To Environmental Conditiond (AREA)
  • Fluid-Damping Devices (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

The container (1) comprises a cylindrical body (2) of tinplate with a lengthwise soldered joint (6), a tinplate base (3) and an aluminium lid (4) with a tab (5) for removing it. The lid is recesses and is fixed in place by a deposit of hot-melt adhesive (7) adjacent to the solder line. The adhesive is applied e.g. by spraying, and after the lid has been fitted the container is inverted and filled before the base is fixed in place.

Description

L'invention concerne un emballage en fer-blanc et son procédé de fabrication.The invention relates to tinplate packaging and its manufacturing process.

Il est connu de conditionner des produits dans une boíte cylindrique en fer-blanc ayant une bonne étanchéité, notamment par rapport à l'oxygène. Il s'agit dans ce cas d'une boíte ayant à l'embouchure de sortie du produit un anneau porteur d'une membrane pelable. L'inconvénient de cette solution réside dans la présence de cet anneau porteur. En effet, d'une part la présence de cet anneau implique une étape de plus dans le procédé de fabrication, ce qui renchérit le prix et d'autre part, l'anneau empêche une sortie totale du produit, surtout s'il s'agit de conditionner des poudres.It is known to package products in a box cylindrical tinplate having a good seal, especially with respect to oxygen. In this case of a box having at the outlet of the product a ring carrying a peelable membrane. The downside of this solution lies in the presence of this ring carrier. Indeed, on the one hand the presence of this ring involves one more step in the manufacturing process, which increases the price and on the other hand, the ring prevents total product release, especially if condition powders.

Le but de la présente invention est de mettre à disposition du consommateur une boíte en fer-blanc ayant une parfaite étanchéité et meilleure marché que celle actuellement sur le marché.The purpose of the present invention is to make available from the consumer a tin can with perfect waterproof and cheaper than the one currently on the market.

L'invention concerne un emballage contenant un produit et comportant un corps cylindrique en fer-blanc avec une soudure le long d'une génératrice du cylindre, un fond en fer-blanc serti sur ledit corps cylindrique et un opercule en aluminium thermoscellé sur l'intérieur dudit corps cylindrique pour le fermer, dans lequel l'intérieur du corps cylindrique comporte dans la zone de soudure au niveau de l'opercule un dépôt de colle. The invention relates to a package containing a product and comprising a cylindrical tin body with a welding along a generator of the cylinder, a bottom in tin set with said cylindrical body and a cover aluminum heat sealed on the inside of said body cylindrical to close it, in which the interior of the cylindrical body has in the weld zone at level of the seal a deposit of glue.

Le produit contenu dans l'emballage selon l'invention n'est pas critique. Cela peut être un produit alimentaire ou tout autre produit sensible à l'oxygène, par exemple de café soluble, du café torréfié et moulu et du lait en poudre.The product contained in the packaging according to the invention is not critical. This can be a food product or any other oxygen-sensitive product, such as coffee soluble, roasted and ground coffee and powdered milk.

Le fer-blanc est un matériau connu de l'homme de métier. Il s'agit de fer recouvert d'étain.Tinplate is a material known to those skilled in the art. he it is iron covered with tin.

Il est connu à l'heure actuelle de fabriquer des boítes cylindriques en fer-blanc avec une soudure le long de la génératrice. Cette technologie utilise notamment des machines SOUDRONIC. Il est connu d'autre part de sceller sur l'intérieur des ces boítes en fer-blanc un opercule en aluminium, par exemple avec des machines de la Société INDOSA. Par contre, jusqu'à présent les emballages ainsi réalisés ne permettaient pas de conditionner des produits sensibles à l'oxygène en raison du défaut d'étanchéité au niveau de l'operculage dans la zone de la soudure du fer-blanc.It is known today to manufacture boxes cylindrical tinplate with a weld along the generator. This technology notably uses SOUDRONIC machines. It is also known to seal on the inside of these tin boxes a seal in aluminum, for example with Company machines INDOSA. However, so far the packaging as well did not allow the packaging of products sensitive to oxygen due to leakage level of the seal in the weld zone of the tin.

La présente invention permet de pallier à ce problème grâce au dépôt de colle dans la zone critique de la soudure.The present invention overcomes this problem by when glue is deposited in the critical area of the weld.

Le type de colle utilisé n'est pas critique. Il suffit que cette colle soit compatible dans le domaine alimentaire, si on conditionne des produits alimentaires et qu'elle soit thermofusible pour permettre ensuite d'y souder l'opercule d'aluminium.The type of glue used is not critical. It is sufficient that this glue is compatible in the food sector, if we package food and it is hot-melt to then allow the seal to be welded aluminum.

L'emballage selon l'invention est pourvu ensuite d'un couvercle recouvrant ledit opercule.The packaging according to the invention is then provided with a cover covering said cover.

Le dépôt de colle est disposé de préférence sous la forme d'un trait, de manière à garantir un dépôt de colle dans la zone de soudure. The glue deposit is preferably arranged in the form in one stroke, so as to guarantee a deposit of glue in the welding area.

L'invention concerne également le procédé de fabrication d'un emballage selon l'invention , dans lequel on forme un corps cylindrique soudé en fer-blanc, on effectue le sprayage d'un trait de colle à l'intérieur dudit corps cylindrique dans la zone de soudure au niveau de la zone destinée à recevoir un opercule thermoscellé, on thermoscelle un opercule en aluminium à l'intérieur du corps cylindrique dans la zone du trait de colle, on retourne le corps cylindrique de manière à effectuer le remplissage de l'emballage et on sertit un fond sur le corps cylindrique.The invention also relates to the manufacturing process a package according to the invention, in which a cylindrical body welded in tinplate, the spraying a line of glue inside said body cylindrical in the weld zone at the level of the zone intended to receive a heat-sealed lid, a aluminum cover inside the cylindrical body in the area of the glue line, we turn the body over cylindrical so as to fill the the packaging and a bottom is crimped onto the cylindrical body.

La ligne de fabrication comprend un système de sprayage soit de manière continue, soit de manière discontinue. Si on travaille de manière continue, il faut prévoir derrière le lieu de sprayage un panneau de récupération de la colle.The production line includes a spraying system either continuously or discontinuously. Yes we work continuously, we have to plan behind the place of spraying an adhesive recovery panel.

Il est possible selon l'invention de prévoir un procédé ayant un débit de fabrication conforme aux lignes de production actuelle pour ce type de produit.It is possible according to the invention to provide a method having a production rate in accordance with the lines of current production for this type of product.

Si on opère de manière discontinue, on prévoit sur la ligne de sprayage un détecteur de présence du corps cylindrique, permettant ainsi le sprayage par intermittence.If we operate discontinuously, we plan on the line spraying a presence detector of the cylindrical body, allowing intermittent spraying.

La suite de la description est faite en référence aux dessins sur lesquels

  • Fig. 1 est une représentation en perspective de l'emballage selon l'invention et
  • Fig. 2 est une représentation schématique d'une ligne de sprayage de colle.
    • The following description is made with reference to the drawings on which
  • Fig. 1 is a perspective representation of the packaging according to the invention and
  • Fig. 2 is a schematic representation of a glue spraying line.

    • L'emballage selon l'invention (1) comprend un corps cylindrique (2) en fer-blanc, un fond (3) serti sur ledit corps (2) et un opercule (4) thermosoudé sur l'intérieur du corps cylindrique. Dans la zone de soudure (6), il est prévu un trait de colle (7) permettant d'éviter tout risque de défaut d'étanchéité de la fermeture de l'opercule dans la région de ladite soudure. L'opercule (4) est soudée sur l'intérieur du corps (2) sur une hauteur a : cette hauteur est de préférence comprise entre 2 et 5 mm, de manière à être sûr de l'étanchéité. On a donc à disposition un emballage permettant une bonne conservation de tout produit sensible à l'oxygène, en particulier de la poudre de café ou de la poudre de lait.The packaging according to the invention (1) comprises a body cylindrical (2) tin, a bottom (3) crimped on said body (2) and a seal (4) heat sealed on the inside of the cylindrical body. In the weld zone (6), it is provided a line of glue (7) to avoid any risk leakage of the closure of the lid in the region of said weld. The cover (4) is welded to the interior of the body (2) over a height a: this height is preferably between 2 and 5 mm, so that be sure of the tightness. So we have a packaging allowing good conservation of any product sensitive to oxygen, especially coffee powder or milk powder.

    La figure 1 représente l'opercule (4) avant l'étape de soudure : cet opercule présente une languette (5) permettant de faciliter l'ouverture. Au moment de l'utilisation, le consommateur tire sur la languette (5) de manière à délaminer ledit opercule. Il est prévu en outre un couvercle (non représenté) permettant une refermeture de l'emballage après la première ouverture.Figure 1 shows the cover (4) before the step of welding: this cover has a tongue (5) to facilitate opening. At time use, the consumer pulls on the tab (5) of so as to delaminate said cover. It is also planned a cover (not shown) allowing reclosing of packaging after first opening.

    On peut utiliser tout type de colle thermofusible.Any type of hot melt adhesive can be used.

    La dimension des boítes n'est pas critique. On envisage en particulier des emballages pour recevoir des doses de 50, 100, 200 et 500 g de café soluble. On peut également y conditionner du lait en poudre, du cacao en poudre, des produits culinaires en poudre et des cafés torréfiés et moulus. On peut également envisager le conditionnement de produits liquides ou solides.The size of the boxes is not critical. We are considering particularly packaging to receive doses of 50, 100, 200 and 500 g of soluble coffee. You can also condition milk powder, cocoa powder, powdered culinary products and roasted coffees and ground. We can also consider the packaging of products liquids or solids.

    La figure 2 représente la ligne de sprayage de colle. La bande transporteuse (10) amène en continu dans la direction de la flèche A les corps cylindriques (11) soudés le long d'une ligne (12).Un pistolet de sprayage (13) disperse la colle (14) sur l'intérieur du corps cylindrique (11) selon un trait de colle (15) dans la zone de la soudure (12) et près de la zone de scellage de l'opercule en aluminium. Figure 2 shows the glue spray line. The conveyor belt (10) continuously feeds in the direction arrow A cylindrical bodies (11) welded along a line (12). A spray gun (13) disperses the adhesive (14) on the inside of the cylindrical body (11) according to a line of glue (15) in the area of the weld (12) and near the sealing area of the aluminum seal.

    Derrière la bande transporteuse, on dispose une plaque (16) de récupération de la colle non utilisée : celle-ci forme un amas (17).Behind the conveyor belt, there is a plate (16) recovery of unused glue: this forms a cluster (17).

    Il est bien entendu qu'en amont du système de sprayage, mais sur la même ligne de transport, on prévoit la soudure des corps cylindriques et en aval, l'operculage du corps cylindrique, le retournement dudit corps, le remplissage du produit qu'on veut conditionner et finalement le sertissage du fond. Ces différentes étapes n'ont pas été représentées sur la figure 2.It is understood that upstream of the spraying system, but on the same transport line, we plan to weld cylindrical bodies and downstream, the sealing of the body cylindrical, the inversion of said body, the filling of the product that we want to condition and finally the crimping the bottom. These different stages have not been represented in figure 2.

    Claims (5)

    1. Package containing a product and comprising a cylindrical body made of tin-plate with a weld along a generator of the cylinder, a bottom made of tin-plate crimped onto the said cylindrical body and an aluminium lid heat-sealed onto the interior of the said cylindrical body in order to close it, characterized in that the interior of the cylindrical body includes an adhesive deposit in the weld zone in the region of the lid.
    2. Package according to claim 1, characterized in that the adhesive deposit is in the form of line of adhesive.
    3. Package according to either of claims 1 or 2, characterized in that the adhesive is thermo-fusible.
    4. Process for manufacturing a package according to one of claims 1 to 3, wherein a cylindrical body made of tin-plate is formed, welded along one of its generators, a line of adhesive is applied by spraying inside the said cylindrical body in the weld zone in the region of the zone intended to receive a heat-sealed lid, an aluminium lid is heat-sealed inside the cylindrical body in the zone of the adhesive line, the cylindrical body is turned over in order to fill the package and the bottom is crimped onto the bottom of the cylindrical body.
    5. Process according to claim 4, characterized in that the adhesive is sprayed in a continuous or discontinuous manner.
    EP97109073A 1997-06-05 1997-06-05 Metal can with heat sealed foil lid and its method of manufacture Expired - Lifetime EP0882655B1 (en)

    Priority Applications (4)

    Application Number Priority Date Filing Date Title
    EP97109073A EP0882655B1 (en) 1997-06-05 1997-06-05 Metal can with heat sealed foil lid and its method of manufacture
    AT97109073T ATE208321T1 (en) 1997-06-05 1997-06-05 METAL CAN WITH HEAT SEALED SEALING FILM AND METHOD FOR PRODUCING SAME
    ES97109073T ES2164959T3 (en) 1997-06-05 1997-06-05 CAN BOAT WITH THERMAL SEALED OPTION AND ITS MANUFACTURING PROCEDURE.
    DE69708061T DE69708061T2 (en) 1997-06-05 1997-06-05 Metal can with a heat-sealed sealing film and process for its manufacture

    Applications Claiming Priority (1)

    Application Number Priority Date Filing Date Title
    EP97109073A EP0882655B1 (en) 1997-06-05 1997-06-05 Metal can with heat sealed foil lid and its method of manufacture

    Publications (2)

    Publication Number Publication Date
    EP0882655A1 EP0882655A1 (en) 1998-12-09
    EP0882655B1 true EP0882655B1 (en) 2001-11-07

    Family

    ID=8226876

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP97109073A Expired - Lifetime EP0882655B1 (en) 1997-06-05 1997-06-05 Metal can with heat sealed foil lid and its method of manufacture

    Country Status (4)

    Country Link
    EP (1) EP0882655B1 (en)
    AT (1) ATE208321T1 (en)
    DE (1) DE69708061T2 (en)
    ES (1) ES2164959T3 (en)

    Family Cites Families (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US4110493A (en) * 1975-10-06 1978-08-29 Gerber Products Company System and method for coating container seams
    US4366662A (en) * 1979-06-30 1983-01-04 Toyo Seikan Kaisha, Ltd. Process for preparation of cans and canned provisions
    JPS6252043A (en) * 1985-08-31 1987-03-06 東洋製罐株式会社 Joint coated welded can
    FR2639561B1 (en) * 1988-11-29 1994-05-20 Carnaud Sa METHOD FOR MANUFACTURING A FLEXIBLE LID METAL PACKAGE AND CORRESPONDING METAL PACKAGE

    Also Published As

    Publication number Publication date
    DE69708061D1 (en) 2001-12-13
    ATE208321T1 (en) 2001-11-15
    EP0882655A1 (en) 1998-12-09
    ES2164959T3 (en) 2002-03-01
    DE69708061T2 (en) 2002-03-14

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