EP0259292A1 - Closure lid for a metal can - Google Patents
Closure lid for a metal can Download PDFInfo
- Publication number
- EP0259292A1 EP0259292A1 EP87870120A EP87870120A EP0259292A1 EP 0259292 A1 EP0259292 A1 EP 0259292A1 EP 87870120 A EP87870120 A EP 87870120A EP 87870120 A EP87870120 A EP 87870120A EP 0259292 A1 EP0259292 A1 EP 0259292A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ring
- metal
- closure
- cover
- jacket
- 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.)
- Granted
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Classifications
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- 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
- B65D43/00—Lids or covers for rigid or semi-rigid containers
- B65D43/02—Removable lids or covers
- B65D43/0202—Removable lids or covers without integral tamper element
- B65D43/0214—Removable lids or covers without integral tamper element secured only by friction or gravity
- B65D43/022—Removable lids or covers without integral tamper element secured only by friction or gravity only on the inside, or a part turned to the inside, of the mouth of the container
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- 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
- B65D43/00—Lids or covers for rigid or semi-rigid containers
- B65D43/02—Removable lids or covers
- B65D43/0202—Removable lids or covers without integral tamper element
- B65D43/0214—Removable lids or covers without integral tamper element secured only by friction or gravity
- B65D43/0216—Removable lids or covers without integral tamper element secured only by friction or gravity inside a peripheral U-shaped channel in the mouth of the container
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- 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
- B65D53/00—Sealing or packing elements; Sealings formed by liquid or plastics material
- B65D53/02—Collars or rings
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- 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00018—Overall construction of the lid
- B65D2543/00064—Shape of the outer periphery
- B65D2543/00074—Shape of the outer periphery curved
- B65D2543/00092—Shape of the outer periphery curved circular
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- 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00018—Overall construction of the lid
- B65D2543/00259—Materials used
- B65D2543/00277—Metal
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- 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00435—Lids secured to an intermediate ring or like annular member fixed to the container mouth
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- 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00444—Contact between the container and the lid
- B65D2543/00453—Contact between the container and the lid in a peripheral U-shaped channel of the container
- B65D2543/00462—Contact between the container and the lid in a peripheral U-shaped channel of the container peripheral U-shaped channel of the lid
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- 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00444—Contact between the container and the lid
- B65D2543/00453—Contact between the container and the lid in a peripheral U-shaped channel of the container
- B65D2543/00472—Skirt
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- 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00444—Contact between the container and the lid
- B65D2543/00481—Contact between the container and the lid on the inside or the outside of the container
- B65D2543/0049—Contact between the container and the lid on the inside or the outside of the container on the inside, or a part turned to the inside of the mouth of the container
- B65D2543/00509—Cup
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- 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00444—Contact between the container and the lid
- B65D2543/00481—Contact between the container and the lid on the inside or the outside of the container
- B65D2543/00537—Contact between the container and the lid on the inside or the outside of the container on the outside, or a part turned to the outside of the mouth of the container
- B65D2543/00546—NO contact
Definitions
- the present invention relates to a closure with a lid of a metal box composed of a body of substantially cylindrical or other shape, of a closure base crimped on the lower edge of the aforementioned body, comprising an inner ring crimped on the upper edge of the body, the free flank of the ring being stamped so as to present a circumferential groove whose inner wing is reinforced by a flange folded inwardly or outwardly in its extension, and a round cover whose marginal part has an annular profile convex in shape complementary to that of the aforementioned groove so as to be retained by tightening and a peripheral reinforcement rim.
- the metal boxes generally consist of a metal body of any shape and a round bottom crimped on the lower edge of the aforesaid body, so as to form the base of the aforesaid metal box.
- the cover closure comprises a metal ring stamped in a grooved profile and set on the upper edge of the body of the above-mentioned box and a round cover, the marginal part of which has a circumferential rib intended to fit into the said groove ensuring a tight metal-to-metal contact on the sides of the groove.
- the presence of a metal ring also aims to strengthen the resistance to crushing. It gives the lid closure sufficient rigidity to allow the stacking of many metal cans on top of each other, for example for handling on a pallet.
- the cover allows the introduction of a screwdriver tip between the reinforcing bead and the crimped edge of the ring to remove the cover without damaging or deforming it.
- the ring and the cover are profiled so that the peripheral bead of the cover is flush with the crimped edge of the ring, in the closed position of the box.
- the document DE-PS 687.540 describes a closure for tinplate containers covered internally with a protective film held in place by an annular metallic closure ring crimped on the upper edge of the body of the box.
- the tightness of the closure is improved by providing an annular seal in the peripheral fold of the cover.
- EP 0002337 also discloses a container with a lid closure in which the lid is provided with a recess in which the body of another container can be fitted, so as to allow them to be stacked in order to facilitate their storage during storage and transport.
- the upper edge of the box body is provided with an annular closure ring made either of metal or of elastically deformable synthetic material.
- annular closure ring made either of metal or of elastically deformable synthetic material.
- the problem posed consists in fixing, by crimping, a closure ring, not subject to corrosion, to the upper edge of the body of a metal box.
- the present invention also aims to protect from corrosion the folded sides of a metal tin closure ring possibly protected with varnish.
- a metal tin closure ring possibly protected with varnish.
- Such a ring is intended to receive the metal or plastic cover closing the metal box. It also aims to obtain an airtight closure of a container closed by a cover which must be able to be placed in turn in the groove of the closure ring and be removed a large number of times, without damage and without undesirably detaching under the action of an internal pressure, for example, the vapor pressure of the solvent or under the action of an impact.
- the new element used in the cover closure according to the invention is a jacket made of preformed elastic synthetic material, snapped onto the inner face of the inner ring, provided internally with a shoulder peripheral surrounding the above-mentioned folded rim.
- This shirt is fixed to its outer periphery by crimping with the metal ring on the upper edge of the body of the metal box.
- the metal ring is dressed with an annular jacket in systhetic material provided with a peripheral shoulder, by snap-fastening the shirt on the inside face of the ring. During the latching, the peripheral shoulder of the shirt folds over the folded edge of the ring and forms with it an integral assembly, which is then crimped on the upper edge of the body of the metal box.
- the elastic annular point is fixed to the metal ring by crimping said ring, on the upper edge of the body of the metal box.
- the bead of the elastic seal is crushed against the folded rim of the ring, when the cover is tightened in the closed position, in the groove of the said metal ring.
- the invention also relates to a method for making a metal box with a lid closure as described above.
- the jacket is fixed to the metal ring previously stamped but not yet crimped.
- the dressing of the ring is done by threading the peripheral bead on the folded edge of the ring and engaging the annular groove of the preformed shirt on the stamped profile of the ring.
- the elastic liner secured to the ring follows the shapes of the stamped profile, can be crimped onto the upper edge of the body of the box in the same manner and with the same equipment as a ring not provided with an elastic liner.
- the metal cover has in its marginal part, a convex annular profile which fits into a groove of complementary shape of a closure ring.
- the cover is in this way retained by a double metal-to-metal contact along each of the wings of the groove.
- a metal box generally designated by the reference numeral 1, is formed of a substantially cylindrical body 2, consisting of a tin sleeve crimped along a generator 3 of the cylinder and of a circular closure base 4 set on the lower edge 5 of the above-mentioned body 2.
- the upper part of the metal box 1 consists of a cover closure 6.
- This closure 6 comprises an inner metal ring 7, set on the upper edge 8 of the body 2 and a metal cover 9.
- the free side of the ring 7 is stamped according to the predetermined profile.
- the ring 7 is stamped so as to present a circumferential groove 10 having two wings 11,12 intended to enclose a convex profile 10 ⁇ , of corresponding shape of the metal cover 9.
- the inner wing 12 of the groove 10 of the ring 7 above is reinforced by a rim 13.
- This rim 13 is folded either on the side of the groove 10 ( Figure 1), or on the inside of the box ( Figure 3). This folded rim 13 is intended to make the profile of the ring 7 more rigid so as to securely enclose the cover 9.
- This cover 9 is generally round. It consists of a sheet formed by stamping with a press.
- the marginal part of the cover 9 has a convex annular profile with a shape complementary to that of the groove 10 of the metal ring 7.
- the peripheral edge of the cover 9 is folded down so as to form a peripheral rim 14.
- the ring 7 and the cover 9 are profiled so that in the closed position of the box, the peripheral rim 14 of the cover 9 is flush with the crimped edge 8 of the ring. There remains between the cover 9 and the closure ring 7 a space in which one can introduce the point of a screwdriver not shown with the help of which one can lift the cover and open the metal box.
- the convex annular profile of the cover 9 engages in the rib of complementary shape of the closure ring 7.
- the sides of the annular profile of the cover 9 are in this way clamped by a double metal-to-metal contact along each of the wings of the rib constituting the groove 10 of the closure ring 7.
- the inner face of the ring 7 is covered with a jacket 15 of elastic synthetic material.
- the shirt 15 has an interior rement of a peripheral shoulder 16 extending the lip of the inner flank of the annular fold of the shirt.
- This jacket 15 is mounted on the closure ring 7, after the stamping of the ring but before crimping on the upper edge of the body 2 of the box.
- the peripheral shoulder 16 of the jacket 7 rests on the folded edge 13 of the ring 7 and the jacket covers the convex annular portion of the stamped profile of the ring 7.
- the ring 7 dressed in the elastic jacket 15 is fixed to its outer periphery by crimping on the upper edge 8 of the body 2 of the metal box 1.
- the elastic shirt 15 follows the shapes of the stamped profile.
- the cover 9 engages by its convex annular profile in the groove 10 of complementary shape to the closure ring 7.
- the annular profile forms a convex rib which fits into the aforementioned groove 10, so as to be clamped along the side walls by the side wings 11,12 of the groove 10.
- a double metal-to-metal contact is obtained which retains securely the cover 9 and prevents any untimely removal of said cover.
- the body and the bottom of the metal box are internally covered with a lining of molded, injected or thermoformed synthetic material forming a container 17 whose upper edge is crimped with the metal ring 7 on the upper edge 8 of the body 2 of the metal box 1 ( Figure 2).
- the cover closure 6 of the metal box consists of a ring 7 made of synthetic material having an inner wing and an outer wing folded down.
- the inner wing 12 cooperates with a cover 9 made either of synthetic material or of metal.
- the ring 7 is fixed to the folded upper rim 8 of the body 2 of the metal box 1 by a metal crimping collar 18.
- the invention also relates to a method for manufacturing a metal box provided with a lid closure according to the invention.
- the jacket 15 is provided, along its inner edge with a peripheral shoulder 16.
- the preformed shirt 15 is applied against the face of the ring 7 facing the inside of the box and the peripherical shoulder of the shirt 15 is folded over the folded edge of the ring 7.
- the assembly formed by the metal ring 7 and the said jacket 15 is then crimped onto the upper body of the body 2 of the metal box 1.
- the resistance to crushing of a container is increased, by surrounding it with a cylindrical body 2 in metal and possibly with a crimped bottom 4.
- the invention is not limited to metal cans formed of a substantially cylindrical body, or it also relates to metal cans of any shape provided with a closure with a round cover.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Closures For Containers (AREA)
- Glass Compositions (AREA)
- Table Devices Or Equipment (AREA)
- Electroplating And Plating Baths Therefor (AREA)
- Control And Other Processes For Unpacking Of Materials (AREA)
- Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)
- Pressure Vessels And Lids Thereof (AREA)
- Laminated Bodies (AREA)
Abstract
Description
La présente invention est relative à une fermeture à couvercle d'une boîte métallique composée d'un corps de forme sensiblement cylindrique ou autre , d'un fond d'obturation serti sur le bord inférieur du corps susdit, comprenant une bague intérieure sertie sur le bord supérieur du corps, le flanc libre de la bague étant embouti de manière à présenter une gorge circonférentielle dont l'aile intérieure est renforcée par un rebord rabattu intérieurement ou extérieurement dans son prolongement, et un couvercle rond dont la partie marginale présente un profil annulaire convexe de forme complémentaire à celle de la gorge susdite de manière à être retenu par serrage et un rebord périphérique de renforcement.The present invention relates to a closure with a lid of a metal box composed of a body of substantially cylindrical or other shape, of a closure base crimped on the lower edge of the aforementioned body, comprising an inner ring crimped on the upper edge of the body, the free flank of the ring being stamped so as to present a circumferential groove whose inner wing is reinforced by a flange folded inwardly or outwardly in its extension, and a round cover whose marginal part has an annular profile convex in shape complementary to that of the aforementioned groove so as to be retained by tightening and a peripheral reinforcement rim.
Elle trouve sa principale application dans les ateliers de peinture et vernis, comme élément d'emballage des produits de peinture contenant des composants susceptibles d'attaquer le fer-blanc aux endroits affaiblis par l'emboutissage.It finds its main application in paint and varnish workshops, as a packaging element for paint products containing components liable to attack tinplate at places weakened by stamping.
L'usage pour l'emballage et l'expédition des produits de peinture, de boîtes métalliques pourvues d'une fermeture à couvercle est largement répandu depuis de nombreuses années.The use for packaging and shipping of paint products of metal cans provided with a lid closure has been widespread for many years.
Les boîtes métalliques sont généralement constituées d'un corps métallique de forme quelconque et d'un fond rond serti sur le bord inférieur du corps susdit, de manière à former la base de la boîte métallique susdite.The metal boxes generally consist of a metal body of any shape and a round bottom crimped on the lower edge of the aforesaid body, so as to form the base of the aforesaid metal box.
La fermeture à couvercle comporte une bague métallique emboutie selon un profil en gorge et sertie sur le bord supérieur du corps de la boîte susdite et un couvercle rond dont la partie marginale présente une nervure circonférencielle destinée à s'emboîter dans la gorge susdite en assurant un contact étanche métal sur métal, sur les flancs de la gorge.The cover closure comprises a metal ring stamped in a grooved profile and set on the upper edge of the body of the above-mentioned box and a round cover, the marginal part of which has a circumferential rib intended to fit into the said groove ensuring a tight metal-to-metal contact on the sides of the groove.
La présence d'une bague métallique a également pour but de renforcer la résistance à l'écrasement. Elle confère à la fermeture à couvercle une rigidité suffisante que pour permettre l'empilement de nombreuses boîtes métalliques les unes sur les autres, en vue par exemple de leur manutention sur palette.The presence of a metal ring also aims to strengthen the resistance to crushing. It gives the lid closure sufficient rigidity to allow the stacking of many metal cans on top of each other, for example for handling on a pallet.
En outre, le couvercle permet l'introduction d'une pointe de tournevis entre le bourrelet de renforcement et le bord serti de la bague pour réaliser le retrait du couvercle sans abîmer ni déformer celui-ci.In addition, the cover allows the introduction of a screwdriver tip between the reinforcing bead and the crimped edge of the ring to remove the cover without damaging or deforming it.
La bague et le couvercle sont profilés de manière que le bourrelet périphérique du couvercle soit à fleur du bord serti de la bague, en position de fermeture de la boîte.The ring and the cover are profiled so that the peripheral bead of the cover is flush with the crimped edge of the ring, in the closed position of the box.
Pour renforcer la rigidité de la bague et améliorer le degré d'étanchéité et de fiabilité de la fermeture à couvercle, on prévoit de prolonger l'aile intérieure de la gorge de la bague, par un roulé inté rieur ou extérieur.To strengthen the rigidity of the ring and improve the degree of tightness and reliability of the cover closure, provision is made to extend the inner wing of the groove of the ring, by an internal roll. laughing or outside.
Le rabattement du roulé intérieur ou extérieur de la bague métallique par emboutissage soumet la celle-ci à des sollicitations extrêmement sévères. On remarque dès lors dans la tôle de fer-blanc des craquelures dues à l'étirage des tôles dans les presses d'emboutissage . Comme il s'agit de tôles étamées éventuellement couvertes d'une couche de vernis, il n'est pas étonnant de constater qu'à certains endroits critiques du rebord rabattu, la bague métallique est dépourvue de protection et est directement soumise à l'action corrosive de l'air, de l'eau et des solvants contenus dans les produits de peinture, vernis et autres compositions liquides ou solides emballés dans lesdites boîtes métalliques.The drawdown of the inside or outside roll of the metal ring by stamping subjects it to extremely severe stresses. We therefore notice in the tinplate cracks due to the stretching of the sheets in the stamping presses. As these are tinned sheets possibly covered with a layer of varnish, it is not surprising to note that in certain critical places of the folded edge, the metal ring is devoid of protection and is directly subjected to the action corrosive to air, water and solvents contained in paint, varnish and other liquid or solid compositions packed in said metal cans.
On observe donc que dans les boîtes métalliques connues, à fermeture américaine ou triplétite, de la rouille risque de s'installer lors des périodes de stockage prolongées, tout le long du rebord rabattu.It is therefore observed that in known metal cans, with American or tripletite closure, rust risks settling during prolonged storage periods, all along the folded rim.
Dans les boîtes métalliques à roulé intérieur, c'est-à-dire comprenant une bague intérieure dont le rebord est rabattu vers l'intérieur de la boîte, le repli annulaire du bord libre de la gorge présente un interstice circonférenciel en contact avec le volume intérieur de la boîte, même en présence du couvercle. La formation de rouille entraîne inévitablement la contamination du produit de peinture contenu dans ladite boîte.In metal boxes with an interior roll, that is to say comprising an inner ring whose rim is folded in towards the inside of the box, the annular fold of the free edge of the groove has a circumferential gap in contact with the volume. inside the box, even in the presence of the lid. The formation of rust inevitably leads to contamination of the paint product contained in said can.
Dans le cas d'un rebord roulé extérieur constitué d'un rabattu vers l'intérieur de la gorge, la rouille qui commence à se former à partir du tranchant, d'ailleurs craquelé, du rebord rabattu, se propage progressivement le long du rebord pour former un amas annulaire de rouille contre la ligne de contact du couvercle et de la bague intérieure. Lors du retrait du couvercle on contamine inévitablement le contenu de la boîte métallique.In the case of an outer rolled edge consisting of a folded inwardly of the groove, the rust which begins to form from the cutting edge, moreover cracked, of the folded edge, spreads gradually along the rim to form an annular heap of rust against the contact line of the cover and the inner ring. When removing the cover, the contents of the canister are inevitably contaminated.
Pour y remédier, le document DE-PS 687.540 décrit une fermeture pour récipients en fer blanc recouvert intérieurement d'un film protecteur maintenu en place par une bague métallique annulaire de fermeture sertie sur le bord supérieur du corps de la boîte.To remedy this, the document DE-PS 687.540 describes a closure for tinplate containers covered internally with a protective film held in place by an annular metallic closure ring crimped on the upper edge of the body of the box.
On améliore l'étanchéité de la fermeture en ménageant un joint annulaire dans le repli périphérique du couvercle.The tightness of the closure is improved by providing an annular seal in the peripheral fold of the cover.
La fabricatrion d'un récipient pourvu d'une telle fermeture est difficile, en raison du fait que le sertissage de la bague métallique annulaire de fermeture sur le corps de la boîte et la fixation du film protecteur sur l'extrémité roulée de la bague sont relativement laborieux.The manufacture of a container provided with such a closure is difficult, owing to the fact that the crimping of the annular metallic closure ring on the body of the box and the fixing of the protective film on the rolled end of the ring are relatively laborious.
On connaît également, par le document EP 0002337, un récipient à fermeture à couvercle dans lequel le couvercle est muni d'un évidement dans lequel peut s'emboîter le corps d'un autre récipient, de manière à permettre leur empilement afin de faciliter leur rangement lors de l'entreposage et le transport.EP 0002337 also discloses a container with a lid closure in which the lid is provided with a recess in which the body of another container can be fitted, so as to allow them to be stacked in order to facilitate their storage during storage and transport.
Le rebord supérieur du corps de la boîte est muni d'une bague annulaire de fermeture réalisée soit en métal, soit en matière synthétique déformable élastiquement. Un tel récipient est cependant sujet à la corrosion lorsque la bague métallique de fermeture n'est pas protégée par une chemise de protection ou est trop peu résistant contre les chocs lorsque la bague consiste simplement en un profil annulaire en matière synthétique.The upper edge of the box body is provided with an annular closure ring made either of metal or of elastically deformable synthetic material. Such a container is however subject to corrosion when the metal closure ring is not protected by a protective jacket or is too weak against impact when the ring simply consists of an annular profile in synthetic material.
Le problème posé consiste à fixer, par sertissage, une bague de fermeture, non sujette à la corrosion, au rebord supérieur du corps d'une boîte métallique.The problem posed consists in fixing, by crimping, a closure ring, not subject to corrosion, to the upper edge of the body of a metal box.
La présente invention vise aussi à protéger de la corrosion les flancs rabattus d'une bague métallique de fermeture en fer-blanc éventuellement protégé de vernis. Une telle bague est destinée à recevoir le couvercle en métal ou en matière synthétique obturant la boîte métallique. Elle vise également à obtenir une fermeture étanche à l'air d'un récipient obturé par un couvercle qui doit pouvoir être tour à tour mis en place dans la gorge de la bague de fermeture et être retiré un grand nombre de fois, sans s'abîmer et sans se désolidariser intempestivement sous l'action d'une pression intérieure par exemple, la tension de vapeur du solvant ou sous l'action d'un choc.The present invention also aims to protect from corrosion the folded sides of a metal tin closure ring possibly protected with varnish. Such a ring is intended to receive the metal or plastic cover closing the metal box. It also aims to obtain an airtight closure of a container closed by a cover which must be able to be placed in turn in the groove of the closure ring and be removed a large number of times, without damage and without undesirably detaching under the action of an internal pressure, for example, the vapor pressure of the solvent or under the action of an impact.
Tel que caractérisé dans les revendications suivantes, l'élément nouveau mis en oeuvre dans la fermeture à couvercle selon l'invention, est une chemise en matière synthétique élastique préformée, encliquetée sur la face intérieure de la bague intérieure, munie intérieurement d'un épaulement périphérique entourant le rebord rabattu susdit. Cette chemise est fixée à son pourtour extérieur par sertissage avec la bague métallique sur le bord supérieur du corps de la boîte métallique.As characterized in the following claims, the new element used in the cover closure according to the invention is a jacket made of preformed elastic synthetic material, snapped onto the inner face of the inner ring, provided internally with a shoulder peripheral surrounding the above-mentioned folded rim. This shirt is fixed to its outer periphery by crimping with the metal ring on the upper edge of the body of the metal box.
On habille la bague métallique d' une chemise annulaire en matière systhétique pourvue d'un épaulement périphérique, en encliquetant la chemise sur la face intérieure de la bague. Lors de l'encliquetage, l'épaulement périphérique de la chemise se rabat au-dessus du rebord rabattu de la bague et forme avec celle-ci un ensemble solidaire, qui est ensuite serti sur le rebord supérieur du corps de la boîte métallique.The metal ring is dressed with an annular jacket in systhetic material provided with a peripheral shoulder, by snap-fastening the shirt on the inside face of the ring. During the latching, the peripheral shoulder of the shirt folds over the folded edge of the ring and forms with it an integral assembly, which is then crimped on the upper edge of the body of the metal box.
Le point annulaire élastique est fixé à la bague métallique par sertissage de ladite bague, sur le bord supérieur du corps de la boîte métallique.The elastic annular point is fixed to the metal ring by crimping said ring, on the upper edge of the body of the metal box.
Suivant une particularité de l'invention, le bourrelet du joint élastique est écrasé contre le rebord rabattu de la bague, lorsque le couvercle est serré en position d'obturation, dans la gorge de la bague métallique susdite.According to a feature of the invention, the bead of the elastic seal is crushed against the folded rim of the ring, when the cover is tightened in the closed position, in the groove of the said metal ring.
L'invention concerne également un procédé pour confectionner une boîte métallique à fermeture à couvercle telle que décrite ci-dessus.The invention also relates to a method for making a metal box with a lid closure as described above.
Pour faciliter la fabrication d'une boîte métallique suivant l'invention, on fixe la chemise à la bague métallique préalablement emboutie mais non encore sertie. L'habillage de la bague se fait en enfilant le bourrelet périphérique sur le rebord rabattu de la bague et en engageant la gorge annulaire de la chemise préformée sur le profil embouti de la bague. La chemise élastique solidaire de la bague, épouse les formes du profil embouti, se laisse sertir sur le bord supérieur du corps de la boîte de la même manière et avec le même appareillage qu'une bague non munie d'une chemise élastique.To facilitate the manufacture of a metal box according to the invention, the jacket is fixed to the metal ring previously stamped but not yet crimped. The dressing of the ring is done by threading the peripheral bead on the folded edge of the ring and engaging the annular groove of the preformed shirt on the stamped profile of the ring. The elastic liner secured to the ring, follows the shapes of the stamped profile, can be crimped onto the upper edge of the body of the box in the same manner and with the same equipment as a ring not provided with an elastic liner.
La présence d'un joint en matière synthétique élastique suivant l'invention, sur la bague métallique permet d'allier aux avantages d'une fermeture à couvercle métallique du type fermeture américaine ou tripletite, les avantages d'une fermeture en matière plastique, c'est-à-dire étanchéité, réutilisations répétées et longévité même en milieu corrosif.The presence of a seal in elastic synthetic material according to the invention, on the metal ring allows to combine the advantages of a closure with a metal cover of the American or tripletite closure type, the advantages of a closure of plastic material, c '' i.e. waterproofing, repeated reuse and longevity even in corrosive environment.
Dans une telle fermeture, le couvercle métallique présente dans sa partie marginale, un profil annulaire convexe qui s'emboîte dans une gorge de forme complémentaire d'une bague de fermeture. Le couvercle est de cette manière retenu par un double contact métal sur métal le long de chacune des ailes de la gorge.In such a closure, the metal cover has in its marginal part, a convex annular profile which fits into a groove of complementary shape of a closure ring. The cover is in this way retained by a double metal-to-metal contact along each of the wings of the groove.
D'autres particularités et détails de l'invention apparaîtront au cours de la description détaillée suivante, dans laquelle il est fait référence aux dessins annexés qui montrent, à titre d'exemple non limitatif une forme de réalisation d'une fermeture à couvercle selon l'invention.Other particularities and details of the invention will become apparent during the following detailed description, in which reference is made to the appended drawings which show, by way of nonlimiting example, an embodiment of a cover closure according to the invention. 'invention.
Dans ces dessins :
- - la figure 1 est une vue partielle en coupe d'une d'une boîte métallique à fermeture à couvercle selon l'invention;
- - la figure 2 est une vue en coupe d'une boîte métallique pourvue d'un récipient de protection intérieur ;
- - la figure 3 est une vue semblable à la figure 1 d'une boîte métallique dont la bague de fermeture est munie d'un rebord rabattu du côté intérieur de la boîte, et
- - la figure 4 est une vue partielle en coupe d'une boîte métallique à fermeture constituée d'une bague en matière synthétique coopérant avec un couvercle réalisé soit en matière systhétique, soit en métal, la bague étant fixée sur le corps de la boîte par une collerette métallique de sertissage.
- - Figure 1 is a partial sectional view of a metal box with a lid closure according to the invention;
- - Figure 2 is a sectional view of a metal box provided with an inner protective container;
- - Figure 3 is a view similar to Figure 1 of a metal box whose closure ring is provided with a flange folded down on the inner side of the box, and
- - Figure 4 is a partial sectional view of a metal canister with closure consisting of a ring of synthetic material cooperating with a cover made either of systhetic material or of metal, the ring being fixed to the body of the box by a metal crimping collar.
Dans ces dessins, les mêmes notations de référence désignent des éléments identiques ou analogues.In these drawings, the same reference notations designate identical or analogous elements.
Comme illustré à la figure 1, une boîte métallique désignée dans son ensemble par la notation de référence 1, est formée d'un corps sensiblement cylindrique 2, constitué d'un manchon de fer-blanc serti le long d'une génératrice 3 de cylindre et d'un fond circulaire 4 d'obturation serti sur le bord inférieur 5 du corps susdit 2.As illustrated in FIG. 1, a metal box generally designated by the reference numeral 1, is formed of a substantially
La partie supérieure de la boîte métallique 1 est constituée d'une fermeture à couvercle 6.The upper part of the metal box 1 consists of a
Cette fermeture 6 comprend une bague métallique 7 intérieure, sertie sur le bord supérieur 8 du corps 2 et un couvercle métallique 9. Le flanc libre de la bague 7 est embouti selon le profil prédéterminé.This
La bague 7 est emboutie de manière à présenter une gorge circonférencielle 10 présentant deux ailes 11,12 destinées à enserrer un profil convexe 10ʹ, de forme correspondante du couvercle métallique 9.The
L'aile intérieure 12 de la gorge 10 de la bague 7 susdite est renforcée par un rebord 13. Ce rebord 13 est rabattu soit du côté de la gorge 10 (figure 1), soit du côté intérieur de la boîte (figure 3). Ce rebord rabattu 13 est destiné à rendre le profil de la bague 7 plus rigide de manière à enserrer solidement le couvercle 9.The
Ce couvercle 9 est généralement rond. Il est constitué d'une tôle mise en forme par emboutissage à la presse. La partie marginale du couvercle 9 présente un profil annulaire convexe de forme complémentaire à celle de la gorge 10 de la bague métallique 7. Le bord périphérique du couvercle 9 est rabattu de manière à former un rebord périphérique 14.This
La bague 7 et le couvercle 9 sont profilés de manière qu'en position de fermeture de la boîte, le rebord périphérique 14 du couvercle 9 soit à fleur du bord serti 8 de la bague. Il subsiste entre le couvercle 9 et la bague de fermeture 7 un espace dans lequel on peut introduire la pointe d'un tournevis non montré à l'aide duquel on peut soulever le couvercle et ouvrir la boîte métallique.The
Le profil annulaire convexe du couvercle 9 s'engage dans la nervure de forme complémentaire de la bague de fermeture 7. Les flancs du profil annulaire du couvercle 9 sont de cette manière enserrés par un double contact métal sur métal le long de chacune des ailes de la nervure constituant la gorge 10 de la bague de fermeture 7.The convex annular profile of the
Suivant l'invention, la face intérieure de la bague 7 est recouverte d'une chemise 15 en matière synthétique élastique. La chemise 15 est munie intérieu rement d'un épaulement périphérique 16 prolongeant la lèvre du flanc intérieur du repli annulaire de la chemise.According to the invention, the inner face of the
Cette chemise 15 est montée sur la bague de fermeture 7, après l'emboutissage de la bague mais avant le sertissage sur le bord supérieur du corps 2 de la boîte. L'épaulement périphérique 16 de la chemise 7 repose sur le bord rabattu 13 de la bague 7 et la chemise recouvre la portion annulaire convexe du profil embouti de la bague 7.This
La bague 7 habillée de la chemise élastique 15 est fixée à son pourtour extérieur par sertissage sur le bord supérieur 8 du corps 2 de la boîte métallique 1.The
La chemise élastique 15 épouse les formes du profil embouti. En position d'obturation, le couvercle 9 s'engage par son profil annulaire convexe dans la gorge 10 de forme complémentaire de la bague de fermeture 7.The
Le profil annulaire forme une nervure convexe qui s'emboîte dans la gorge 10 susdite, de manière à être enserrée le long des parois latérales par les ailes latérales 11,12 de la gorge 10. On obtient un double contact métal sur métal qui retient solidement le couvercle 9 et empêche tout retrait intempestif dudit couvercle.The annular profile forms a convex rib which fits into the
Dans une forme de réalisation particulière suivant l'invention, le corps et le fond de la boîte métallique sont recouverts intérieurement d'une garniture de matière synthétique moulée, injectée ou thermoformée formant un récipient 17 dont le bord supérieur est serti avec la bague métallique 7 sur le bord supé rieur 8 du corps 2 de la boîte métallique 1 (figure 2).In a particular embodiment according to the invention, the body and the bottom of the metal box are internally covered with a lining of molded, injected or thermoformed synthetic material forming a
Dans une troisième forme de réalisation, illustrée à la figure 4, la fermeture à couvercle 6 de la boîte métallique est constituée d'une bague 7 en matière synthétique présentant une aile intérieure et une aile extérieure rabattues vers le bas. L'aile intérieure 12 coopère avec un couvercle 9 réalisé soit en matière synthétique, soit en métal.In a third embodiment, illustrated in FIG. 4, the
La bague 7 est fixée sur le rebord supérieur rabattu 8 du corps 2 de la boîte métallique 1 par une collerette métallique de sertissage 18.The
L'invention concerne également un procédé pour fabriquer une boîte métallique pourvue d'une fermeture à couvercle suivant l'invention.The invention also relates to a method for manufacturing a metal box provided with a lid closure according to the invention.
Après avoir embouti la bague métallique 7 d'une chemise élastique 15 préformée en matière synthétique. La chemise 15 est pourvue, le long de son bord intérieur d'un épaulement périphérique 16.After stamping the
Pour habiller la bague de fermeture 7, avant le sertissage, on applique la chemise préformée 15 contre la face de la bague 7 dirigée vers l'intérieur de la boîte et on rabat l'épaulement péripérique de la chemise 15 au-dessus du rebord rabattu de la bague 7. On sertit ensuite l'ensemble formé de la bague métallique 7 et de ladite chemise 15 sur le corps supérieur du corps 2 de la boîte métallique 1.To cover the
Enfin dans une seconde forme de réalisation, on augmente la résistance à l'écrasement d'un récipient, en entourant celui-ci d'un corps cylindrique 2 en métal et éventuellement d'un fond serti 4.Finally in a second embodiment, the resistance to crushing of a container is increased, by surrounding it with a
Il est évident que l'invention n'est pas limitée strictement à la forme de la réalisation décrite ci-dessus et que de nombreuses modifications constructives peuvent être apportées à la bague de fermeture et à la chemise selon l'invention et en particulier aux moyens d'enserrage de la bague, à la composition du joint élastique, à la forme du couvercle sans pour autant sortir du cadre de l'invention, délimité par les revendications suivantes.It is obvious that the invention is not strictly limited to the form of the embodiment described above and that numerous constructive modifications can be made to the closure ring and to the jacket according to the invention and in particular to the means ring clamping, the composition of the elastic seal, the shape of the cover without departing from the scope of the invention, defined by the following claims.
Ainsi, l'invention ne se limite pas aux boîtes métalliques formées d'un corps sensiblement cylindrique, ou elle concerne également les boîtes métalliques de forme quelconque munies d'une fermeture à couvercle rond.Thus, the invention is not limited to metal cans formed of a substantially cylindrical body, or it also relates to metal cans of any shape provided with a closure with a round cover.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT87870120T ATE65470T1 (en) | 1986-09-02 | 1987-09-01 | LID FOR A TIN CAN. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE217110 | 1986-09-02 | ||
BE0/217110A BE905362A (en) | 1986-09-02 | 1986-09-02 | LID CLOSURE OF A METAL BOX. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0259292A1 true EP0259292A1 (en) | 1988-03-09 |
EP0259292B1 EP0259292B1 (en) | 1991-07-24 |
Family
ID=3844072
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19870870120 Expired - Lifetime EP0259292B1 (en) | 1986-09-02 | 1987-09-01 | Closure lid for a metal can |
Country Status (8)
Country | Link |
---|---|
US (1) | US4821911A (en) |
EP (1) | EP0259292B1 (en) |
JP (1) | JPS63125160A (en) |
AT (1) | ATE65470T1 (en) |
BE (1) | BE905362A (en) |
DE (1) | DE3771616D1 (en) |
ES (1) | ES2023949B3 (en) |
GR (1) | GR3002706T3 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1993002937A1 (en) * | 1991-08-01 | 1993-02-18 | Skandia Blik Aps | Lid retaining collar |
ITMI20121721A1 (en) * | 2012-10-12 | 2014-04-13 | Poli Box Italiana S R L | CONTAINER, PARTICULARLY SUITABLE FOR THE CONTAINMENT OF WATER-BASED AND SIMILAR BASED LIQUIDS. |
EP2605975A4 (en) * | 2010-08-17 | 2015-10-21 | Anglade Pierre-Michel D | Recyclable composite container |
Families Citing this family (11)
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US5542576A (en) * | 1992-05-05 | 1996-08-06 | Arment; Elton D. | Apparatus for sealing friction resealable containers during air transport |
US5622280A (en) * | 1995-07-06 | 1997-04-22 | North American Packaging Company | Method and apparatus for sealing an open head drum |
ATE394314T1 (en) * | 2004-10-11 | 2008-05-15 | Impress Group Bv | RESEALABLE FOIL LID |
FR2903090B1 (en) * | 2006-06-30 | 2010-03-19 | Janny Sarl | CONTAINER FOR STORAGE OF PRODUCTS |
DE502008002166D1 (en) * | 2007-07-27 | 2011-02-10 | Crebocan Ag | CANNED BODY AND METHOD AND DEVICE FOR MANUFACTURING THEREOF |
ITBO20080089U1 (en) * | 2008-11-26 | 2010-05-27 | Moreno Casoni | NEW TOILET CAN |
WO2011123309A1 (en) * | 2010-03-29 | 2011-10-06 | International Engine Intellectual Property Company, Llc | Ammonia dosing cartridge and method |
WO2013107897A1 (en) * | 2012-01-20 | 2013-07-25 | Ardagh Mp Group Netherlands B.V. | Container with plastic cover ring |
CN106144177B (en) * | 2015-04-17 | 2018-10-23 | 江苏健龙电器有限公司 | A kind of band presets the high protective plastic case of mounting hole |
GB2589911B (en) * | 2019-12-12 | 2022-02-23 | Crown Packaging Technology Inc | Metal food cans with reclosable lids |
FR3105186B1 (en) * | 2019-12-20 | 2021-11-12 | Abc Transfer | WATERPROOF CONTAINER INCLUDING A DEVICE ALLOWING REMOVABLE CONNECTION TO A SPEAKER |
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US3443735A (en) * | 1966-07-22 | 1969-05-13 | Inland Steel Co | End construction for shipping containers |
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-
1986
- 1986-09-02 BE BE0/217110A patent/BE905362A/en not_active IP Right Cessation
-
1987
- 1987-09-01 EP EP19870870120 patent/EP0259292B1/en not_active Expired - Lifetime
- 1987-09-01 ES ES87870120T patent/ES2023949B3/en not_active Expired - Lifetime
- 1987-09-01 DE DE8787870120T patent/DE3771616D1/en not_active Expired - Lifetime
- 1987-09-01 AT AT87870120T patent/ATE65470T1/en not_active IP Right Cessation
- 1987-09-02 JP JP62218081A patent/JPS63125160A/en active Pending
- 1987-09-02 US US07/092,098 patent/US4821911A/en not_active Expired - Fee Related
-
1991
- 1991-09-12 GR GR91401308T patent/GR3002706T3/en unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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DE687540C (en) * | 1937-03-07 | 1940-01-31 | Paul Nofer | Locking device for container |
EP0002337A1 (en) * | 1977-11-25 | 1979-06-13 | Clifton Gale Morton | Container and method of handling, filling and sealing said container |
US4442952A (en) * | 1981-12-28 | 1984-04-17 | The Sherwin-Williams Company | Quad-seal snap lock |
US4530442A (en) * | 1984-08-28 | 1985-07-23 | Standard Container Company | Plastic container and sealing ring assembly therefor |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1993002937A1 (en) * | 1991-08-01 | 1993-02-18 | Skandia Blik Aps | Lid retaining collar |
EP2605975A4 (en) * | 2010-08-17 | 2015-10-21 | Anglade Pierre-Michel D | Recyclable composite container |
ITMI20121721A1 (en) * | 2012-10-12 | 2014-04-13 | Poli Box Italiana S R L | CONTAINER, PARTICULARLY SUITABLE FOR THE CONTAINMENT OF WATER-BASED AND SIMILAR BASED LIQUIDS. |
WO2014057023A1 (en) * | 2012-10-12 | 2014-04-17 | Poli Box Italiana S.R.L. | Container, particularly suitable for containing water-based liquids and the like |
Also Published As
Publication number | Publication date |
---|---|
US4821911A (en) | 1989-04-18 |
ATE65470T1 (en) | 1991-08-15 |
GR3002706T3 (en) | 1993-01-25 |
EP0259292B1 (en) | 1991-07-24 |
BE905362A (en) | 1987-03-02 |
JPS63125160A (en) | 1988-05-28 |
ES2023949B3 (en) | 1992-02-16 |
DE3771616D1 (en) | 1991-08-29 |
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