US3750827A - Containers - Google Patents

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Publication number
US3750827A
US3750827A US00124410A US3750827DA US3750827A US 3750827 A US3750827 A US 3750827A US 00124410 A US00124410 A US 00124410A US 3750827D A US3750827D A US 3750827DA US 3750827 A US3750827 A US 3750827A
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United States
Prior art keywords
container
edge
lid
containers
coated
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Expired - Lifetime
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US00124410A
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H Wick
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Nordischer Maschinenbau Rud Baader GmbH and Co KG
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Nordischer Maschinenbau Rud Baader GmbH and Co KG
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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
    • 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
    • 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
    • B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
    • B65D25/14—Linings or internal coatings

Definitions

  • the invention relates to a deep-drawn sterilisable metal Int. container for foodstuffs
  • the container is f thin wall Field of Search construction from metal foils, e.g. aluminium foil, 229/ MF coated at least on its inside with a thermo plastics layer. It is provided around its lower or base edge with an References Cited edge bead of double wall configuration which is folded UNITED STATES PATENTS or rolled either inwardly beneath the bottom wall or 2,142,743 1 1939 Calleson et al. 220 66 x outwardly adjacent the Side Wall- 2,339,763 [/1944 Calleson et al. 2,541,081 2/1951 Lyon l Clam" 6 Draw'ng Flgures 3,233,8l3 2/1966 Wolford et al II'I'" "III, I "I, I
  • This invention relates to deep-drawn sterilisable metal containers for example for containing foodstuffs.
  • the invention is particularly concerned with the manufacture of containers from metal foils, e.g. aluminium foil which are coated at least interiorily with a thermo plastics layer, the body of the container having a flange around its open end to which a lid formed of the same material is welded, or otherwise sealed.
  • containers of the above type In comparison with containers made from bare tin plate or sheet aluminium, containers of the above type generally have less stiffnessso that they readily become dented or perforated during transportation of the body of the container or when they are filled, or when they are closed and sealed. As a result they do not withstand autoclaving and/or washing.
  • German Gebrauchsmuster 6,807,656 Whilst it is known from German Gebrauchsmuster 6,807,656 to provide the body ofa container at its open end with an outwardly bent and rolled-in edge flange, and to arrange for a bent-over edge of a lid, which is to be sealed on the body, to engage over the rolled-in edge of the edge flange of the body, and this reinforces the top of the container, the base of the container is not reinforced and is consequently sensitive to damage. It is also known from German Gebrauchsmuster 6,812,346 to secure to a container body a lid formed from sheet aluminium coated with an inner layer of thermo-plastic material.
  • the open end of the container body has an outwardly bent edge flange also coated on the inside with a thermo-plastic material with the edge of the lid projecting beyond the sealing edge of the edge flange of the body.
  • This arrangement also provides reinforcement at the top container edge to some extent, but it is, in general, inadequate and apart from providing no reinforcement at the base of the container there are objections to this construction on hygenic grounds since there is an outwardly open gap between the edge of the lid and the edge flange of the body.
  • a deep-drawn sterilisable container of metal foil coated at least interiorily with a thermo-plastics layer has integral bottom and side walls with the latter extending from an upper peripheral edge, and an integral folded lower edge bead of at least double wall configuration lying adjacent one of the bottom and side walls.
  • Containers formed in this way can be handled in almost the same way as those made from uncoated, thicker metal, and they allow the devices and machines hitherto used in the food industry still to be utilised.
  • the side wall is of tapered form, to obtain optimum stackability the edge bead is folded or rolled inwardly beneath the bottom wall.
  • FIG. 1 shows the body of a container according to the invention with a lid unfitted and the base of the container being incomplete;
  • FIG. 2 shows the lid in a fitted position and a bead formed around the base of the container
  • FIGS. 3 to 6 show alternative configurations of bead around the base of the container.
  • FIG. I illustrates a body 2 of a container which has been deep-drawn from a disc or strip of aluminium foil to provide a side wall 3 extending downwards from a flange 4 at the open end of the container, this flange having a rolled or beaded outer edge.
  • the drawing process is such that the bottom wall 5 is drawn in as shown in FIG. 1 to produce a double walled annular edge 6 which is shown in FIG. 1 and which is subsequently formed in one of the ways shown in FIGS. 2 to 6 to provide a reinforcing head.
  • the forming of the bead can take place after drawing down the side wall 3 prior to or after filling the container body or even after closure by means of the lid. In general however, the bead will be formed immediately after the deep-drawing process.
  • Additional reinforcement of the upper peripheral edge of the container can be provided, if necessary, by folding over or rolling-in the edge 10 of the lid with the folded over or rolled in edge head of the flange 4 of the container body.
  • These reinforcing edges on the upper or lower ends of the container can be formed by rotating tools of known form for example in the form of closure rollers, or pressing tools movably mounted with respect to the container axis or multi-part pressing tools disposed at right angles to the container axis.
  • the metal used in general is aluminium foil and this is coated with a varnish or other suitable thermoplastics material to render the body and lid heat scalable.
  • the aluminium, before forming of the body and the lid may be coated at least on one side which is to form the interior of the container with a sterilisable thermoplastics material acceptable for foodstuffs and capable of withstanding autoclaving.
  • the body is made from an aluminium foil strip having a thickness of 60 to 200 um and laminated with a plastics film of between 40 and um, while for the lid there is used an aluminium foil strip of 50 to um laminated with a plastics film of 40 to 75 pm.
  • the exact thicknesses depend more or less on the purpose and the stress of the container.
  • a deep-drawn container of metal foil coated at least interiorily with a thermoplastic layer the container having integral bottom and side walls with the latter extending to an upper peripheral edge, said upper edge carrying a radially extending peripheral flange with a lid closing the container and engaging said flange, and an integral folded lower edge head of at least double wall configuration overlying and paralleling the outer face of a lower portion of the side wall of the container.

Abstract

The invention relates to a deep-drawn sterilisable metal container for foodstuffs. The container is of thin wall construction from metal foils, e.g. aluminium foil, coated at least on its inside with a thermo plastics layer. It is provided around its lower or base edge with an edge bead of double wall configuration which is folded or rolled either inwardly beneath the bottom wall or outwardly adjacent the side wall.

Description

I United States Patent 11 1 1111 3,750,827 Wick 5] Aug. 7, 1973 CONTAINERS 3,416,702 12/1968 Hoenig 220/70 [75] Inventor: Helmut Wick, Lubeck, Germany 21 i TE Z S BR'X "A MF X E NPA N PPLlC Tl N [73] Ass1gnee: Nordischer Maschinenbau Rud 224 174 9 1959 A r 3 MF Baader, Lubeck, Germany ustra 1a [22] Filed: Mar. 15, 1971 Primary Examiner-Samuel B. Rorthberg Assistant Examiner-James R. Garrett [21] Appl 124A) Att0rney-Richards & Grier [52] [1.8. CI 220/74, 220/66, 220/70, [57] ABSTRACT MP The invention relates to a deep-drawn sterilisable metal Int. container for foodstuffs The container is f thin wall Field of Search construction from metal foils, e.g. aluminium foil, 229/ MF coated at least on its inside with a thermo plastics layer. It is provided around its lower or base edge with an References Cited edge bead of double wall configuration which is folded UNITED STATES PATENTS or rolled either inwardly beneath the bottom wall or 2,142,743 1 1939 Calleson et al. 220 66 x outwardly adjacent the Side Wall- 2,339,763 [/1944 Calleson et al. 2,541,081 2/1951 Lyon l Clam" 6 Draw'ng Flgures 3,233,8l3 2/1966 Wolford et al II'I'" "III, I "I, I
I'll
1 CONTAINERS This invention relates to deep-drawn sterilisable metal containers for example for containing foodstuffs. The invention is particularly concerned with the manufacture of containers from metal foils, e.g. aluminium foil which are coated at least interiorily with a thermo plastics layer, the body of the container having a flange around its open end to which a lid formed of the same material is welded, or otherwise sealed. In comparison with containers made from bare tin plate or sheet aluminium, containers of the above type generally have less stiffnessso that they readily become dented or perforated during transportation of the body of the container or when they are filled, or when they are closed and sealed. As a result they do not withstand autoclaving and/or washing.
Whilst it is known from German Gebrauchsmuster 6,807,656 to provide the body ofa container at its open end with an outwardly bent and rolled-in edge flange, and to arrange for a bent-over edge of a lid, which is to be sealed on the body, to engage over the rolled-in edge of the edge flange of the body, and this reinforces the top of the container, the base of the container is not reinforced and is consequently sensitive to damage. It is also known from German Gebrauchsmuster 6,812,346 to secure to a container body a lid formed from sheet aluminium coated with an inner layer of thermo-plastic material. In this case, the open end of the container body has an outwardly bent edge flange also coated on the inside with a thermo-plastic material with the edge of the lid projecting beyond the sealing edge of the edge flange of the body. This arrangement also provides reinforcement at the top container edge to some extent, but it is, in general, inadequate and apart from providing no reinforcement at the base of the container there are objections to this construction on hygenic grounds since there is an outwardly open gap between the edge of the lid and the edge flange of the body.
It is an object of the present invention to provide a light and cheap container for foodstuffs or the like which can be readily sealed and which has adequate stiffness particularly at its lower end either when empty or filled and also be capable of surviving treatment during autoclaving.
According to the present invention a deep-drawn sterilisable container of metal foil coated at least interiorily with a thermo-plastics layer, has integral bottom and side walls with the latter extending from an upper peripheral edge, and an integral folded lower edge bead of at least double wall configuration lying adjacent one of the bottom and side walls.
Containers formed in this way can be handled in almost the same way as those made from uncoated, thicker metal, and they allow the devices and machines hitherto used in the food industry still to be utilised. Where the side wall is of tapered form, to obtain optimum stackability the edge bead is folded or rolled inwardly beneath the bottom wall.
The invention may be carried into practice in a number of ways but several specific embodiments will now be described by way of example with reference to the accompanying drawings in which:
FIG. 1 shows the body of a container according to the invention with a lid unfitted and the base of the container being incomplete;
FIG. 2 shows the lid in a fitted position and a bead formed around the base of the container;
FIGS. 3 to 6 show alternative configurations of bead around the base of the container.
FIG. I illustrates a body 2 of a container which has been deep-drawn from a disc or strip of aluminium foil to provide a side wall 3 extending downwards from a flange 4 at the open end of the container, this flange having a rolled or beaded outer edge. The drawing process is such that the bottom wall 5 is drawn in as shown in FIG. 1 to produce a double walled annular edge 6 which is shown in FIG. 1 and which is subsequently formed in one of the ways shown in FIGS. 2 to 6 to provide a reinforcing head. The forming of the bead can take place after drawing down the side wall 3 prior to or after filling the container body or even after closure by means of the lid. In general however, the bead will be formed immediately after the deep-drawing process.
Additional reinforcement of the upper peripheral edge of the container can be provided, if necessary, by folding over or rolling-in the edge 10 of the lid with the folded over or rolled in edge head of the flange 4 of the container body.
These reinforcing edges on the upper or lower ends of the container can be formed by rotating tools of known form for example in the form of closure rollers, or pressing tools movably mounted with respect to the container axis or multi-part pressing tools disposed at right angles to the container axis. The metal used in general is aluminium foil and this is coated with a varnish or other suitable thermoplastics material to render the body and lid heat scalable. Alternatively the aluminium, before forming of the body and the lid, may be coated at least on one side which is to form the interior of the container with a sterilisable thermoplastics material acceptable for foodstuffs and capable of withstanding autoclaving.
By way of example only it is pointed out that in the production of containers of the kind as described above and having a volume of about 30 to 400 ml (cm") the following material may be used:
The body is made from an aluminium foil strip having a thickness of 60 to 200 um and laminated with a plastics film of between 40 and um, while for the lid there is used an aluminium foil strip of 50 to um laminated with a plastics film of 40 to 75 pm. The exact thicknesses depend more or less on the purpose and the stress of the container.
What we claim as our invention and desire to secure by Letters Patent is:
l. A deep-drawn container of metal foil coated at least interiorily with a thermoplastic layer, the container having integral bottom and side walls with the latter extending to an upper peripheral edge, said upper edge carrying a radially extending peripheral flange with a lid closing the container and engaging said flange, and an integral folded lower edge head of at least double wall configuration overlying and paralleling the outer face of a lower portion of the side wall of the container.
t III t i '4
US00124410A 1971-03-15 1971-03-15 Containers Expired - Lifetime US3750827A (en)

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Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3921848A (en) * 1972-12-04 1975-11-25 Alusuisse Aerosol dispensing and similar metal cans adapted to contain a pressurized fluid
US3946872A (en) * 1974-09-27 1976-03-30 Alcan Aluminum Corporation Sealable and sterilizable package
US3946871A (en) * 1974-09-27 1976-03-30 Alcan Aluminum Corporation Sealable and sterilizable package
FR2306138A1 (en) * 1975-04-02 1976-10-29 Vaw Leichtmetall Gmbh Coating aluminium packaging material - with mixt. of epoxy resin, phenol-formaldehyde resin and polyester in solvent (NL051076)
US3997677A (en) * 1972-05-09 1976-12-14 Standard Packaging Corporation High temperature resistant hermetically sealed plastic tray packages
US4223798A (en) * 1978-07-06 1980-09-23 Swiss Aluminium Ltd. Can for preserving foodstuffs and process for its manufacture
US4333601A (en) * 1979-05-02 1982-06-08 Inauen Machinen Ag Aluminum foil lined package, particularly suitable for oil- and fat-containing products
EP0062385A2 (en) * 1981-04-02 1982-10-13 The Dow Chemical Company Food or beverage cans made from plastic coated steel sheet
EP0063395A2 (en) * 1981-04-02 1982-10-27 The Dow Chemical Company Food or beverage cans made from polyethylene copolymer coated sheet steel
US4617178A (en) * 1984-11-05 1986-10-14 Nichols Robert L Medical instrument sterilization container
US4900519A (en) * 1984-11-05 1990-02-13 Nichols Robert L Medical instrument sterilization container
US4915918A (en) * 1984-11-05 1990-04-10 Nichols Robert L Medical instrument sterilization container
US5011718A (en) * 1988-05-04 1991-04-30 Monarch Products, Inc. Method and apparatus for reducing residual levels of ethylene oxide in repeatedly sterilized polymeric devices
FR2662422A1 (en) * 1990-05-23 1991-11-29 Zuechner Blechwaren METAL PACKAGING WITH SEALED PROFILE.
US5080874A (en) * 1984-11-05 1992-01-14 Nichols Robert L Medical instrument sterilization container
US5183643A (en) * 1984-11-05 1993-02-02 Nichols Robert L Medical instrument sterilization container
US5202098A (en) * 1984-11-05 1993-04-13 Nichols Robert L Medical instrument sterilization container with pressure induced positive drainage
US5213231A (en) * 1981-09-18 1993-05-25 Precision Valve Corporation Aerosol container closure
US5219086A (en) * 1989-03-29 1993-06-15 Tetra Alfa Holdings S.A. Packing container for liquid, especially pressurized contents
US5227074A (en) * 1991-03-04 1993-07-13 Monarch Products, Inc. Filter for medical instrument sterilization containers and method for removing moisture and contaminants therefrom
US5228588A (en) * 1989-02-16 1993-07-20 Toyo Seikan Kaisha Ltd. Thickness-reduced deep-draw-formed can
US5324489A (en) * 1991-03-04 1994-06-28 Johnson & Johnson Medical, Inc. Medical instrument sterilization container with a contaminant plug
US6715628B1 (en) 1991-03-04 2004-04-06 Steris Inc. Contaminant plug for medical instrument sterilization containers
US20100017988A1 (en) * 2008-07-25 2010-01-28 Ming-Hsiao Lai Bucket and toilet brush set
US20160185479A1 (en) * 2013-08-12 2016-06-30 Mars, Incorporated Tray

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2142743A (en) * 1936-01-31 1939-01-03 Crown Cork & Seal Co Metallic container
US2339763A (en) * 1941-03-21 1944-01-25 Crown Cork & Seal Co Container and method of making same
US2541081A (en) * 1947-12-12 1951-02-13 Lyon George Albert Circular tray
US3233813A (en) * 1963-07-31 1966-02-08 Reynolds Metals Co Pie plate receptacle with stepped flange
US3416702A (en) * 1966-03-13 1968-12-17 Continental Can Co Reinforced metallic container
US3516597A (en) * 1968-01-04 1970-06-23 Kaiser Aluminium Chem Corp Foil container

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2142743A (en) * 1936-01-31 1939-01-03 Crown Cork & Seal Co Metallic container
US2339763A (en) * 1941-03-21 1944-01-25 Crown Cork & Seal Co Container and method of making same
US2541081A (en) * 1947-12-12 1951-02-13 Lyon George Albert Circular tray
US3233813A (en) * 1963-07-31 1966-02-08 Reynolds Metals Co Pie plate receptacle with stepped flange
US3416702A (en) * 1966-03-13 1968-12-17 Continental Can Co Reinforced metallic container
US3516597A (en) * 1968-01-04 1970-06-23 Kaiser Aluminium Chem Corp Foil container

Cited By (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3997677A (en) * 1972-05-09 1976-12-14 Standard Packaging Corporation High temperature resistant hermetically sealed plastic tray packages
US3921848A (en) * 1972-12-04 1975-11-25 Alusuisse Aerosol dispensing and similar metal cans adapted to contain a pressurized fluid
US3946872A (en) * 1974-09-27 1976-03-30 Alcan Aluminum Corporation Sealable and sterilizable package
US3946871A (en) * 1974-09-27 1976-03-30 Alcan Aluminum Corporation Sealable and sterilizable package
FR2306138A1 (en) * 1975-04-02 1976-10-29 Vaw Leichtmetall Gmbh Coating aluminium packaging material - with mixt. of epoxy resin, phenol-formaldehyde resin and polyester in solvent (NL051076)
US4223798A (en) * 1978-07-06 1980-09-23 Swiss Aluminium Ltd. Can for preserving foodstuffs and process for its manufacture
US4333601A (en) * 1979-05-02 1982-06-08 Inauen Machinen Ag Aluminum foil lined package, particularly suitable for oil- and fat-containing products
EP0062385A2 (en) * 1981-04-02 1982-10-13 The Dow Chemical Company Food or beverage cans made from plastic coated steel sheet
EP0063395A2 (en) * 1981-04-02 1982-10-27 The Dow Chemical Company Food or beverage cans made from polyethylene copolymer coated sheet steel
EP0063395A3 (en) * 1981-04-02 1983-06-01 The Dow Chemical Company Food or beverage cans made from polyethylene copolymer coated sheet steel
EP0062385A3 (en) * 1981-04-02 1983-06-15 The Dow Chemical Company Food or beverage cans made from plastic coated steel sheet
US5213231A (en) * 1981-09-18 1993-05-25 Precision Valve Corporation Aerosol container closure
US5080874A (en) * 1984-11-05 1992-01-14 Nichols Robert L Medical instrument sterilization container
US4900519A (en) * 1984-11-05 1990-02-13 Nichols Robert L Medical instrument sterilization container
US5183643A (en) * 1984-11-05 1993-02-02 Nichols Robert L Medical instrument sterilization container
US4915918A (en) * 1984-11-05 1990-04-10 Nichols Robert L Medical instrument sterilization container
US5202098A (en) * 1984-11-05 1993-04-13 Nichols Robert L Medical instrument sterilization container with pressure induced positive drainage
US4617178A (en) * 1984-11-05 1986-10-14 Nichols Robert L Medical instrument sterilization container
US5011718A (en) * 1988-05-04 1991-04-30 Monarch Products, Inc. Method and apparatus for reducing residual levels of ethylene oxide in repeatedly sterilized polymeric devices
US5228588A (en) * 1989-02-16 1993-07-20 Toyo Seikan Kaisha Ltd. Thickness-reduced deep-draw-formed can
US5308418A (en) * 1989-03-29 1994-05-03 Tetra Laval Holdings & Finance S.A. Packing container for liquid, especially pressurized contents
US5219086A (en) * 1989-03-29 1993-06-15 Tetra Alfa Holdings S.A. Packing container for liquid, especially pressurized contents
BE1005055A3 (en) * 1990-05-23 1993-04-06 Zuechner Blechwaren Metal packaging edge profile sealable.
FR2662422A1 (en) * 1990-05-23 1991-11-29 Zuechner Blechwaren METAL PACKAGING WITH SEALED PROFILE.
US5227074A (en) * 1991-03-04 1993-07-13 Monarch Products, Inc. Filter for medical instrument sterilization containers and method for removing moisture and contaminants therefrom
US5324489A (en) * 1991-03-04 1994-06-28 Johnson & Johnson Medical, Inc. Medical instrument sterilization container with a contaminant plug
US5474738A (en) * 1991-03-04 1995-12-12 Johnson & Johnson Medical, Inc. Medical instrument sterilization container
US5474679A (en) * 1991-03-04 1995-12-12 Johnson & Johnson Medical, Inc. Filter for medical instrument sterilization containers
US5736043A (en) * 1991-03-04 1998-04-07 Johnson & Johnson Medical, Inc. Filter for medical instrument sterilization containers
US5954219A (en) * 1991-03-04 1999-09-21 Johnson & Johnson Medical, Inc. Contaminant plug for medical instrument sterilization containers
US6145687A (en) * 1991-03-04 2000-11-14 Johnson & Johnson Medical, Inc. Contaminant plug for medical instrument sterilization containers
US6715628B1 (en) 1991-03-04 2004-04-06 Steris Inc. Contaminant plug for medical instrument sterilization containers
US20100017988A1 (en) * 2008-07-25 2010-01-28 Ming-Hsiao Lai Bucket and toilet brush set
US20160185479A1 (en) * 2013-08-12 2016-06-30 Mars, Incorporated Tray

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