GB2124597A - Lightweight cans for still liquids such as fruit juices and methods of manufacture thereof - Google Patents

Lightweight cans for still liquids such as fruit juices and methods of manufacture thereof Download PDF

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Publication number
GB2124597A
GB2124597A GB08222044A GB8222044A GB2124597A GB 2124597 A GB2124597 A GB 2124597A GB 08222044 A GB08222044 A GB 08222044A GB 8222044 A GB8222044 A GB 8222044A GB 2124597 A GB2124597 A GB 2124597A
Authority
GB
United Kingdom
Prior art keywords
liquid
lightweight
still liquid
gas
base
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB08222044A
Inventor
Frederick Miller
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.)
VAUX BREWERIES PLC
Original Assignee
VAUX BREWERIES PLC
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 VAUX BREWERIES PLC filed Critical VAUX BREWERIES PLC
Priority to GB08222044A priority Critical patent/GB2124597A/en
Publication of GB2124597A publication Critical patent/GB2124597A/en
Withdrawn legal-status Critical Current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
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/18—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient
    • B65D81/20—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas
    • B65D81/2046—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas under superatmospheric pressure
    • B65D81/2053—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas under superatmospheric pressure in an least partially rigid container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
    • B65B31/006—Adding fluids for preventing deformation of filled and closed containers or wrappers
    • 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
    • B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
    • B65D1/12—Cans, casks, barrels, or drums

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)

Abstract

A lightweight thin walled can containing still liquid such as fruit or citrus juice, soft drinks or wine is provided in which the thin walls of the can are supported internally against compression either by pressure provided by a vapourised gas in the can which is not absorbed by the still liquid or by pressure provided by compression of the still liquid itself caused by controlled deformation of the base of the can. Preferably the gas is introduced into the can in liquid form prior to sealing. Alternatively the can has an initially outwardly convex base which is deformed inwardly to pressurize the can contents.

Description

SPECIFICATION Lightweight cans for still liquids such af fruit juices and methods of manufacture thereof This invention relates to lightweight cans for still liquids such as fruit or citrus juices, soft drinks or wine and concerns such cans, with or without a still liquid charge and methods of manufacturing same.
Lightweight cans for containing liquids are desirable because of the low weight and reduced cost in materials required for their manufacture which leads to a reduction in cost and a reduction in handling charges. However, such cans, such as conventionally made from steel, aluminium or aluminium alloys have thin walls and these are fragile and relatively unresistant to compression so that the cans and their contents require to be made resistant to damage. For this reason such cans conventionally are only used for carbonated liquids in which the absorbed carbon dioxide in the liquid provides an internal pressure in the can acting to support the thin walls against compression and damage.
There is thus a need for a lightweight can and a method of manufacture thereof, suitable for use with uncarbonated still liquids in which the use of carbon dioxide is undesirable.
According to one aspect of the present invention there is provided a lightweight thin walled can containing still liquid in which the thin walls of the can are supported internally against compression either by pressure provided by a vapourised gas in the can which is not absorbed by the still liquid or by pressure provided by compression of the still liquid itself caused by controlled deformation of the base of the cam.
Advantageously the gas is introduced into the can in liquid form. Preferably the can is made from one or more of plastics, steel or a light metal or alloy such as aluminium or aluminium alloy.
Conveniently the liquid is a fruit or citrus juice, a soft drink or wine. Conveniently the can base initially has an outwardly convex shape which is deformed inwardly into a concave shape, after the can has been charged with liquid, to pressurize the contents and thereby provide internal support for the thin walls.
According to a further aspect of the present invention there is provided a method of producing a lightweight, thin wall can containing a still liquid in which prior to sealing the can a charge of liquid or vapourised gas, which is not absorbed into the still liquid, is injected into the can or into the still liquid, in a manner such that the liquid vapourises in the sealed can or the vapourised gas in the sealed can provides internal support for the thin wall of the can.
According to another aspect of the present invention there is provided a method of producing a lightweight, thin walled can, containing still liquid, in which after charging with liquid and sealing, an outwardly convex shaped base of the can is deformed inwardly to a concave shape to pressure the contents and thereby provide internal support for the thin walls of the can.
A lightweight, thin walled can of the invention is made of any convenient light material such as plastics, steel or a light metal or alloy such as aluminium or aluminium alloy. Generally such a can is of hollow cylindrical shape with thin side walls, a relatively thicker base disc wall and a top disc wall which preferably is provided with openable means or which is weakened to facilitate opening of the can for the purpose of dispersing the contents, Such a can can be made in two or three sections as desired and may be made of a mixture of the foregoing materials. A can of the invention is intended to contain, or contains, a still liquid such as citrus or fruit juice, a soft drink or wine. With these beverages it is important that on dispensing they do not contain any absorbed gas which detrimentally affects the taste and nature thereof.
As aforesaid one of the problems of thin walled cans is the need to impart rigidity to the thin walls sufficient to resist compression thereof and subsequent damage to the can and contents.
With conventional thin walled cans containing carbonated liquids the carbon dioxide in the liquid provides an internal pressure which internally supports the thin walls of the can against compression. However, as previously pointed out it is not desirable to use carbon dioxide with still liquids as the carbon dioxide is absorbed by the liquid and imparts an undesirable taste and gasiness thereto.
According to the invention this problem is overcome by supporting the thin walls of the can internally against rupture either by pressure provided by a vapourised gas in the can which is not absorbed by the still liquid or by pressure provided by compression of the still liquid itself caused by control deformation of the base of the can. In the first of these solutions the can is charged with still liquid and prior to sealing the can a charge of liquid gas, preferably nitrogen, which is not absorbed into the still liquid, is injected into the can or into the still liquid in a manner such that liquid gas vapourises in the sealed can and thereby provides internal support for the thin walls of the can. The liquid gas can be injected by a valve onto the surface of the liquid after the cans have been filled.A metering device can be employed to open a valve for a given period of time whenever a can is in position.
Alternatively the gas may be injected directly in vapourised form prior to sealing and provided that the can is sealed quickly the vapourised gas does not escape. Conveniently the can should be sealed within 1 second of the injection of gas.
The second solution to the problem is to pressurise the can contents, not by introduction of a non-absorbable gas, but by deforming the can itself and thereby causing the contents to apply internal pressure against the thin walls of the can to support them. This may be done by using a can having an initially outwardly convex base such that after charging the can with still liquid and sealing the can the base is deformed inwardly into a concave shape to pressurize the contents and thereby provide internal support for the thin walls of the can. The base of the can may be deformed inwardly by mechanical pressure and the pressure in the can is created by reducing the volume of space within the can.
Claims (Filed on 16.6.83) 1. A lightweight thin walled can containing still liquid in which the thin walls of the can are supported internally against compression either by pressure provided by a vapourised gas in the can which is not absorbed by the still liquid or by pressure provided by compression of the still liquid itself caused by controlled deformation of the base of the can.
2. A can according to claim 1, in which the gas is introduced into the can in liquid form.
3. A can according to claim 1 or claim 2, made from one or more of plastics, steel or a light metal or alloy.
4. A can according to claim 3, wherein the light metal or light alloy is aluminium or aluminium alloy.
5. A can according to any one of claims 1 to 4, wherein the liquid is a fruit or citrus juice, a soft drink or a wine.
6. A can according to any one of claims 1 to 5, having a base with an initially outwardly convex shape which is deformed inwardly into a concave shape, after the can has been charged with liquid, to pressurize the contents and thereby provide internal support for the thin walls.
7. A method of producing a lightweight, thin walled can containing a still liquid in which prior to sealing the can a charge of liquid or vapourised gas, which is not absorbed into the still liquid, is injected into the can or into the still liquid, in a manner such that the liquid gas vapourises in the sealed can or the vapourised gas in the sealed can provides internal support for the thin walls of the can.
8. A method of producing a lightweight, thin walled can, containing still liquid, in which after charging with liquid and sealing, an outwardly convex shaped base of the can is deformed inwardly to a concave shape to pressure the contents and thereby provide internal support for the thin walls of the can.
9. A lightweight thin walled can according to claim 1, substantially as hereinbefore described.
10. A method of producing a lightweight, thin walled can according to claim 7 or claim 8, substantially as hereinbefore described.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (10)

**WARNING** start of CLMS field may overlap end of DESC **. sealing the can the base is deformed inwardly into a concave shape to pressurize the contents and thereby provide internal support for the thin walls of the can. The base of the can may be deformed inwardly by mechanical pressure and the pressure in the can is created by reducing the volume of space within the can. Claims (Filed on 16.6.83)
1. A lightweight thin walled can containing still liquid in which the thin walls of the can are supported internally against compression either by pressure provided by a vapourised gas in the can which is not absorbed by the still liquid or by pressure provided by compression of the still liquid itself caused by controlled deformation of the base of the can.
2. A can according to claim 1, in which the gas is introduced into the can in liquid form.
3. A can according to claim 1 or claim 2, made from one or more of plastics, steel or a light metal or alloy.
4. A can according to claim 3, wherein the light metal or light alloy is aluminium or aluminium alloy.
5. A can according to any one of claims 1 to 4, wherein the liquid is a fruit or citrus juice, a soft drink or a wine.
6. A can according to any one of claims 1 to 5, having a base with an initially outwardly convex shape which is deformed inwardly into a concave shape, after the can has been charged with liquid, to pressurize the contents and thereby provide internal support for the thin walls.
7. A method of producing a lightweight, thin walled can containing a still liquid in which prior to sealing the can a charge of liquid or vapourised gas, which is not absorbed into the still liquid, is injected into the can or into the still liquid, in a manner such that the liquid gas vapourises in the sealed can or the vapourised gas in the sealed can provides internal support for the thin walls of the can.
8. A method of producing a lightweight, thin walled can, containing still liquid, in which after charging with liquid and sealing, an outwardly convex shaped base of the can is deformed inwardly to a concave shape to pressure the contents and thereby provide internal support for the thin walls of the can.
9. A lightweight thin walled can according to claim 1, substantially as hereinbefore described.
10. A method of producing a lightweight, thin walled can according to claim 7 or claim 8, substantially as hereinbefore described.
GB08222044A 1982-07-30 1982-07-30 Lightweight cans for still liquids such as fruit juices and methods of manufacture thereof Withdrawn GB2124597A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08222044A GB2124597A (en) 1982-07-30 1982-07-30 Lightweight cans for still liquids such as fruit juices and methods of manufacture thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08222044A GB2124597A (en) 1982-07-30 1982-07-30 Lightweight cans for still liquids such as fruit juices and methods of manufacture thereof

Publications (1)

Publication Number Publication Date
GB2124597A true GB2124597A (en) 1984-02-22

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
GB08222044A Withdrawn GB2124597A (en) 1982-07-30 1982-07-30 Lightweight cans for still liquids such as fruit juices and methods of manufacture thereof

Country Status (1)

Country Link
GB (1) GB2124597A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0521642A1 (en) * 1991-07-04 1993-01-07 CarnaudMetalbox plc Method of filling a can and can for use therein
EP0607769A1 (en) * 1993-01-20 1994-07-27 The Procter & Gamble Company Packaging assembly with improved stackability
US5467894A (en) * 1994-06-01 1995-11-21 The Proctor Gamble Company Interleaving dispenser for dispensing objects stacked within a package
US5566824A (en) * 1993-01-20 1996-10-22 The Procter & Gamble Company Packaging assembly with improved stackability
US5743388A (en) * 1993-09-24 1998-04-28 The Procter & Gamble Company Flexible and substantially rectangular package for containing multiple irregular shaped objects such as soap bars

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1455652A (en) * 1973-01-17 1976-11-17 Messer Griesheim Gmbh Method of producing internal pressure in containers
GB2091228A (en) * 1980-12-18 1982-07-28 Reynolds Metals Co Container pressurization system
GB2092552A (en) * 1980-12-17 1982-08-18 Boc Ltd Dispensing apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1455652A (en) * 1973-01-17 1976-11-17 Messer Griesheim Gmbh Method of producing internal pressure in containers
GB2092552A (en) * 1980-12-17 1982-08-18 Boc Ltd Dispensing apparatus
GB2091228A (en) * 1980-12-18 1982-07-28 Reynolds Metals Co Container pressurization system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0521642A1 (en) * 1991-07-04 1993-01-07 CarnaudMetalbox plc Method of filling a can and can for use therein
AU649847B2 (en) * 1991-07-04 1994-06-02 Carnaudmetalbox Plc Filling cans
EP0607769A1 (en) * 1993-01-20 1994-07-27 The Procter & Gamble Company Packaging assembly with improved stackability
US5566824A (en) * 1993-01-20 1996-10-22 The Procter & Gamble Company Packaging assembly with improved stackability
US5743388A (en) * 1993-09-24 1998-04-28 The Procter & Gamble Company Flexible and substantially rectangular package for containing multiple irregular shaped objects such as soap bars
US5467894A (en) * 1994-06-01 1995-11-21 The Proctor Gamble Company Interleaving dispenser for dispensing objects stacked within a package

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Legal Events

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WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)