EP0725017A1 - Wiederverschliessbare, schalenförmige Verpackung in modifizierter Atmosphäre - Google Patents

Wiederverschliessbare, schalenförmige Verpackung in modifizierter Atmosphäre Download PDF

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Publication number
EP0725017A1
EP0725017A1 EP95101436A EP95101436A EP0725017A1 EP 0725017 A1 EP0725017 A1 EP 0725017A1 EP 95101436 A EP95101436 A EP 95101436A EP 95101436 A EP95101436 A EP 95101436A EP 0725017 A1 EP0725017 A1 EP 0725017A1
Authority
EP
European Patent Office
Prior art keywords
container
lid
package
lip
flange
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Withdrawn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
EP95101436A
Other languages
English (en)
French (fr)
Inventor
Ihor Wyslotsky
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP95101436A priority Critical patent/EP0725017A1/de
Publication of EP0725017A1 publication Critical patent/EP0725017A1/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Withdrawn legal-status Critical Current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
    • 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
    • B65D81/2069—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 in a special atmosphere
    • B65D81/2076—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 in a special atmosphere in an at least partially rigid container

Definitions

  • the present invention is a continuation-in-part of the application entitled: "Method of Extending Shelf Life of A Comestible Product while Providing A Locally Packaged Appearance", Serial No. 08/087,602, filed on July 2, 1993 submitted herewith, the disclosure of which is incorporated by reference herewith, and related generally to packaging primarily for comestible products, and more particularly to a relcoseable clamshell package having novel corner locking features engageable between the container portion and the lid portion thereof and suitable for providing a recloseable package, which package may be a modified atmosphere package having strippable opening means.
  • recloseable packages are desirable, particularly for comestible products, and in some embodiments especially in regard to bakery products, such as muffins, croissants and other freshly baked bakery goods, such as may be typically provided in a large grocery supermarket which has a bakery on the premises.
  • Packaging provided for such bakery goods has often been in the form of clear plastic clamshell packaging.
  • Such clear plastic clamshell packaging, and especially for such bakery goods provides a baked-on-the-premises image which grocery retailers have found to be especially appealing to consumers.
  • the present invention is directed to a modified atmosphere clamshell package, having lockable halves, and further incorpor- ating in preferred embodiments an easy to open strip.
  • modified atmosphere clamshell package includes a hermetic enclosure mechanism, and further includes bottom disposed bellows-like structures to maintain equal inner and outer pressures to utilize partial pressure differential means for reducing stresses on the package seal.
  • the recloseable clamshell package of the invention includes a container portion and a lid portion.
  • the lid portion has a lip portion which is congruently shaped with the container lip portion for mating engagement therewith in order to form a closed package.
  • the lid portion includes corner portions which are congruently shaped with at least a portion of the container portions for mating engagement therewith.
  • the present invention is more particularly directed to congruently shaped lid locking and matingly engageable container and lid distentions disposed on each of the container lip and container lid lip elements and respective at each of the container portions and lid corner portions.
  • the congruently shaped container and lid distentions have slightly different dimensions to exert an engagement force therebetween when engaged.
  • congruently shaped and lid locking and matingly engageable container and lid distentions are in one preferred embodiment substantially arcuate in shape (as determined in the plain of cross-section which is parallel with the plane with the respective lip portion).
  • a recloseable clamshell package generally 10 is set forth, the various elements thereof are depicted.
  • the recloseable clamshell package of the present invention includes a container portion 12.
  • the container portion 12 includes a bottom element 14 and connected sidewalls 16,18,20,22 which are connected to bottom 14 and project upwardly therefrom.
  • the sidewalls 16,18,20,22 are connected together at their respective lateral edges to form container corners 24,26,28,30.
  • the sidewalls 16,18,20,22 form a container lip portion 32 which is disposed at the upper extremities of the connected sidewalls 16,18,20,22 and unitarily extends along the top portion of each such sidewalls 16,18,20,22 and each container corner 24,26,28,39.
  • the clamshell package 10 of the present invention further includes a lid portion 34 which has a lid lip portion 36 substantially congruently shaped with at least a portion of the container lip portion 32 for mating engagement therewith. Together the lid lip portion 36 and container lip portion 32 form a closeable and recloseable package.
  • the lid portion 34 includes lid corner portions 38,40,42,44 which are congruently shaped with the container corners 24,26,28,39 for mating engagement therewith.
  • the recloseable clamshell package 10 of the present invention particularly includes respective congruently shaped lid locking and matingly engageable container and lid distentions respectively 46,48 which are disposed respectively on the container lip 32 and the lid lip 36 respectively at each of the container corner portions 2,26,28,30 and the lid corner portions 38,40,42,44.
  • the congruently shaped container and lid distentions 46,48 have slightly different dimensions to assert an engagement force therebetween when engaged.
  • the congruently shaped lid locking and matingly engageable container lid lip distentions 46,48 are substantially arcuate shaped in a preferred embodiment, as set forth in Fig. 4 hereof, as shown in the plane of cross-section which is parallel with the plane of the respective lip portion 3,236.
  • the container distention 46 may be either a female distention, as shown in Fig. 4 or a male distention 50 as shown in Fig. 5.
  • the lip distention may be either the mae lip distention 48 as shown in Fig. 4 or a female distention 52 as shown in Fig. 5.
  • At least one of the container and lip distentions 46,48 or 50,52 includes a positive force threshold deformable rim for a stretchingly but recoverably deforming during mating engagement to permit engagement of the container and lip distentions 46,48 or 50,52.
  • lid lip distention 48 includes a rim 49 which has a dimension extending outwardly from lid portion 34 which is greater than the corresponding portion of container distension 46 to snap the cover in place, and thereby to form a positive recloseable engagement.
  • An alternative embodiment is set forth in Fig. 5, wherein the lid lip distention and container lip distentions are essentially reversed, with the lid lip distention disposed exterior to the container lip distentions.
  • the improved recloseable clamshell container portion 12 of the present invention may preferably include a laterally extending container flange 54.
  • Such laterally extending container flange 54 extends preferably laterally of container lip 32.
  • the container flange 54 extends circumferentially of substantially the entirety of the container lip portion 32 as shown in Fig. 1.
  • the lid portion 34 may further preferably include a lid flange 56 which extends laterally from the lid lip portion 36 thereof for overlapping disposition with the container flange 54.
  • the container flange 54 and the lid flange 56 are sealed together in preferred embodiments.
  • a peal opening means 58 as shown in Fig. 1 includes a line of reduced strength 60 as shown in Fig. 6 wherein indentation may be made, such as by heat sealing bar upon container flange 54 and lid flange 56, such that a peal force may be directed along an opening strip for removal of at least a substantial portion of either the container flange 54, or in more preferred embodiments, the lid flange 56.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
EP95101436A 1995-02-02 1995-02-02 Wiederverschliessbare, schalenförmige Verpackung in modifizierter Atmosphäre Withdrawn EP0725017A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP95101436A EP0725017A1 (de) 1995-02-02 1995-02-02 Wiederverschliessbare, schalenförmige Verpackung in modifizierter Atmosphäre

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP95101436A EP0725017A1 (de) 1995-02-02 1995-02-02 Wiederverschliessbare, schalenförmige Verpackung in modifizierter Atmosphäre

Publications (1)

Publication Number Publication Date
EP0725017A1 true EP0725017A1 (de) 1996-08-07

Family

ID=8218953

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95101436A Withdrawn EP0725017A1 (de) 1995-02-02 1995-02-02 Wiederverschliessbare, schalenförmige Verpackung in modifizierter Atmosphäre

Country Status (1)

Country Link
EP (1) EP0725017A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2337746A (en) * 1998-05-26 1999-12-01 Linpac Plastics Ltd A sealed container

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3943987A (en) * 1974-10-17 1976-03-16 Rossi Thomas J Reclosable air-tight containers with evacuation means
WO1991003407A1 (en) * 1989-08-30 1991-03-21 Seawell Corporation N.V. Packaging for perishable goods
US5044495A (en) * 1990-06-25 1991-09-03 Redex Packaging Corp. Multiple component pressurized package for articles and methods of pressurization thereof
WO1994008870A1 (de) * 1992-10-13 1994-04-28 Schmalbach-Lubeca Ag Durch siegeln verschliessbarer, nach dem ersten öffnen wiederverschliessbarer behälter, sowie verfahren und folie zu seiner herstellung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3943987A (en) * 1974-10-17 1976-03-16 Rossi Thomas J Reclosable air-tight containers with evacuation means
WO1991003407A1 (en) * 1989-08-30 1991-03-21 Seawell Corporation N.V. Packaging for perishable goods
US5044495A (en) * 1990-06-25 1991-09-03 Redex Packaging Corp. Multiple component pressurized package for articles and methods of pressurization thereof
WO1994008870A1 (de) * 1992-10-13 1994-04-28 Schmalbach-Lubeca Ag Durch siegeln verschliessbarer, nach dem ersten öffnen wiederverschliessbarer behälter, sowie verfahren und folie zu seiner herstellung

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2337746A (en) * 1998-05-26 1999-12-01 Linpac Plastics Ltd A sealed container
GB2337746B (en) * 1998-05-26 2002-09-18 Linpac Plastics Ltd Sealed container

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