EP1544128A1 - Behälter mit flexiblem Boden - Google Patents

Behälter mit flexiblem Boden Download PDF

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Publication number
EP1544128A1
EP1544128A1 EP03078952A EP03078952A EP1544128A1 EP 1544128 A1 EP1544128 A1 EP 1544128A1 EP 03078952 A EP03078952 A EP 03078952A EP 03078952 A EP03078952 A EP 03078952A EP 1544128 A1 EP1544128 A1 EP 1544128A1
Authority
EP
European Patent Office
Prior art keywords
sheet metal
metal container
flexible
container according
container
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Withdrawn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
EP03078952A
Other languages
English (en)
French (fr)
Inventor
Jean-Yves Bouvet
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.)
Trivium Packaging Group Netherlands BV
Original Assignee
Impress Group BV
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 Impress Group BV filed Critical Impress Group BV
Priority to EP03078952A priority Critical patent/EP1544128A1/de
Publication of EP1544128A1 publication Critical patent/EP1544128A1/de
Withdrawn legal-status Critical Current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
    • B65D79/00—Kinds or details of packages, not otherwise provided for
    • B65D79/005—Packages having deformable parts for indicating or neutralizing internal pressure-variations by other means than venting
    • B65D79/008—Packages having deformable parts for indicating or neutralizing internal pressure-variations by other means than venting the deformable part being located in a rigid or semi-rigid container, e.g. in bottles or jars
    • B65D79/0081—Packages having deformable parts for indicating or neutralizing internal pressure-variations by other means than venting the deformable part being located in a rigid or semi-rigid container, e.g. in bottles or jars in the bottom part thereof
    • 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
    • B65D79/00—Kinds or details of packages, not otherwise provided for
    • B65D79/005—Packages having deformable parts for indicating or neutralizing internal pressure-variations by other means than venting
    • B65D79/0087—Packages having deformable parts for indicating or neutralizing internal pressure-variations by other means than venting the deformable part being located in a closure, e.g. in caps or lids

Definitions

  • the invention relates to a sheet metal container comprising a bottom and an upstanding peripheral wall.
  • Such containers are known in all kinds of sorts and are used for a number of applications. Especially with such containers for use in storing food stuff, the container has to fulfil a number of requirements.
  • foil seal is arranged airtight onto the mouth opening, defined by the peripheral wall. If the foil seal is not airtight the container has to be rejected as waste. It is however difficult to measure this especially as sheet metal containers are relatively rigid and it is difficult to reliably detect whether the foil seal is airtight or not.
  • a sheet metal container which is characterized in that the bottom comprises a convex, outside directed flexible part, which is flexible between the convex rest position and a concave position.
  • a sheet metal container is provided with the foil lid, is filled and sealed such a way that the final internal pressure is lower than the ambient pressure. So after the foil seal is arranged the ambient pressure will press the foil seal inwards providing a seal with a flat unwrinkled surface. Also due to the pressure difference between the outside and the inside of the container the flexible bottom part will be urged to the concave position. When the temperature of the food stuff inside the container is raised and food stuff expands, the flexible bottom part will compensate for this expansion by returning to its convex rest position. This will keep the foil lid straight and unwrinkled.
  • the flexible bottom part also provides for a way to detect whether the foil seal is airtight or not and/or loss of vacuum.
  • the flexible bottom part will try to compensate for the lack of pressure difference between the inside and the outside container and will move towards the convex rest position.
  • the flexible bottom part will get to its rest position. Now by measuring the relative position of the flexible bottom part it is possible to detect whether the foil seal is airtight or not.
  • a third possible advantage of the sheet metal container according to the invention is that when opening the foil seal, the flexible bottom part will suddenly move back to its convex rest position providing an audible sound, which is an indication to the user of the container that the contents of the container is still fresh.
  • the flexible part is flexible around a center line. This enhances the popping sound when opening the foil seal or other closure of the sheet metal container.
  • the container comprises a first groove enclosing the flexible part.
  • This groove provides for extra flexibility of the flexible part resulting in an increased deflection of the bottom part which improves detection of the relative position of the flexible bottom part.
  • the first groove is directed inwardly (towards the interior of the container), as this provides the best flexibility, especially when the first groove is bordering the flexible part.
  • the sheet metal container according to the invention comprises a second groove enclosing the first groove and directed opposite of the first groove. This further improves the flexibility of the flexible part.
  • the bottom is circular. With a circular bottom the tension in the flexible bottom part is distributed evenly providing for a more linear displacement and better detectability of the position of the bottom part.
  • the upstanding wall defines a mouth opening, which mouth opening is sealed by a foil lid.
  • the inside pressure is decreased, such that the flexible bottom flexes towards the concave position.
  • Figure 1 shows a cross sectional view of a sheet metal container 1 according to the invention.
  • This sheet metal container 1 has a bottom 2 and a peripheral wall 3 extending upwardly.
  • the upper edge 4 of the peripheral wall 3 defines a mouth opening for the sheet metal container 1. On the edge 4 a foil lid 5 is sealed.
  • the bottom 2 comprises a flexible bottom part 6, which is bordered by an inward directed first groove 7 and a outward directed groove 8.
  • the flexible bottom part 6 is convex.
  • Food stuff is introduced into the container 1 at a pressure lower than the ambient or atmospheric pressure. Under these conditions the foil lid 5 is sealed onto the edge 4. When the container 1 is then brought into the ambient pressure the flexible bottom part will flex inwardly to a concave position, which is designated by 9. The foil lid 5 will also become a bit concave and is designated by 10.
  • Figure 2 shows a second embodiment 15 of a container according to the invention.
  • This container 15 has a bottom 16 and a peripheral wall 17 with an edge 18.
  • a foil lid 19 is arranged onto the edge 18.
  • the bottom 16 has a flexible bottom part 20, which is bordered by an annular portion 21. This annular portion is bordered by an inwards directed groove 22 and an outward directed groove 23.
  • the flexible bottom part will flex to its concave position designated with 24 and the foil lid will bent inwards to the position 25 as shown in figure 2.
  • the container according to the invention is provided with a closure with easy open end.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
EP03078952A 2003-12-17 2003-12-17 Behälter mit flexiblem Boden Withdrawn EP1544128A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP03078952A EP1544128A1 (de) 2003-12-17 2003-12-17 Behälter mit flexiblem Boden

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03078952A EP1544128A1 (de) 2003-12-17 2003-12-17 Behälter mit flexiblem Boden

Publications (1)

Publication Number Publication Date
EP1544128A1 true EP1544128A1 (de) 2005-06-22

Family

ID=34486313

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03078952A Withdrawn EP1544128A1 (de) 2003-12-17 2003-12-17 Behälter mit flexiblem Boden

Country Status (1)

Country Link
EP (1) EP1544128A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9346610B2 (en) 2013-03-14 2016-05-24 James Nelson Variable volume container

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1061643B (de) * 1955-02-12 1959-07-16 Michel Bindschedler Stirnwand fuer Behaelter, welche nach dem Einfuellen des Inhalts im warmen Zustand verschlossen werden
US3400853A (en) * 1965-01-18 1968-09-10 Platmanufakter Ab Can for filling with hot goods
US4685273A (en) * 1981-06-19 1987-08-11 American Can Company Method of forming a long shelf-life food package
US5593063A (en) * 1992-07-30 1997-01-14 Carnaudmetalbox Plc Deformable end wall for a pressure-resistant container
WO1997020741A1 (de) * 1995-12-04 1997-06-12 Impress Metal Packaging Gmbh & Co. Ohg Konservendosenkörper
US5727710A (en) * 1995-12-05 1998-03-17 Alusuisse Technology & Management Ltd. Gas-tight container
WO2003074385A1 (en) * 2002-03-06 2003-09-12 Sallcoll B.V. Packaging for foodstuff comprising a displaceable bottom body or lid part

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1061643B (de) * 1955-02-12 1959-07-16 Michel Bindschedler Stirnwand fuer Behaelter, welche nach dem Einfuellen des Inhalts im warmen Zustand verschlossen werden
US3400853A (en) * 1965-01-18 1968-09-10 Platmanufakter Ab Can for filling with hot goods
US4685273A (en) * 1981-06-19 1987-08-11 American Can Company Method of forming a long shelf-life food package
US5593063A (en) * 1992-07-30 1997-01-14 Carnaudmetalbox Plc Deformable end wall for a pressure-resistant container
WO1997020741A1 (de) * 1995-12-04 1997-06-12 Impress Metal Packaging Gmbh & Co. Ohg Konservendosenkörper
US5727710A (en) * 1995-12-05 1998-03-17 Alusuisse Technology & Management Ltd. Gas-tight container
WO2003074385A1 (en) * 2002-03-06 2003-09-12 Sallcoll B.V. Packaging for foodstuff comprising a displaceable bottom body or lid part

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9346610B2 (en) 2013-03-14 2016-05-24 James Nelson Variable volume container

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