US3854649A - Thin-walled container - Google Patents

Thin-walled container Download PDF

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Publication number
US3854649A
US3854649A US00278380A US27838072A US3854649A US 3854649 A US3854649 A US 3854649A US 00278380 A US00278380 A US 00278380A US 27838072 A US27838072 A US 27838072A US 3854649 A US3854649 A US 3854649A
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US
United States
Prior art keywords
flange
zone
lid
zones
receptacle
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.)
Expired - Lifetime
Application number
US00278380A
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English (en)
Inventor
K Fuchslocher
U Wagner
E Scherr
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
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3854649A publication Critical patent/US3854649A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/10—Container closures formed after filling
    • B65D77/20—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
    • B65D77/2004—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers the cover being maintained on the container by mechanical means, e.g. crimping, clamping, riveting
    • B65D77/2012—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers the cover being maintained on the container by mechanical means, e.g. crimping, clamping, riveting the cover being crimped or folded over the container flange
    • 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
    • B65D2577/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks, bags
    • B65D2577/10—Container closures formed after filling
    • B65D2577/20—Container closures formed after filling by applying separate lids or covers
    • B65D2577/2041—Pull tabs
    • B65D2577/205—Pull tabs integral with the closure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S229/00—Envelopes, wrappers, and paperboard boxes
    • Y10S229/902—Box for prepared or processed food
    • Y10S229/903—Ovenable, i.e. disclosed to be placed in an oven

Definitions

  • This invention relates to a thin-walled container for prepared food or the like and is of the type which has a lower or receptacle portion (hereinafter referred to as receptacle) preferably made of aluminum and a one-piece upper or lid portion (hereinafter designated as lid) which serves as a closure for the receptacle and which is made of very thin aluminum or comparable metal.
  • receptacle lower or receptacle portion
  • lid one-piece upper or lid portion
  • the edge of the lid is at all sides crimped about a continuous receptacle flange having one pair of parallel extending longitudinally straight first flange ranges which are joined by second flange ranges of the receptacle flange that extend through the rounded flange comer zones from one such zone to the other.
  • Containers of the aforenoted type are used in particular for storing deep-frozen prepared food; they usually constitute the serving dish subsequent to the removal of the lid. These containers are mass-produced inexpensive articles which may be found particularly in snack bars or the like.
  • the containers for economic reasons, are made of as thin a wall as possible.
  • the receptacle In order to ensure that the receptacle is sufficiently rigid, it is usually provided at its rim with a continuous flange which expediently has a rolled-in edge preferably bent obliquely downwardly and outwardly.
  • the lid has a wall thickness which is even smaller than that of the receptacle, since it merely has the function to cover the receptacle during shipment and storage.
  • the container In the snack bar or other place of utilization, the container, together with the food disposed therein, is usually heated in a hot air oven or the like until the food reaches the desired temperature. During this treatment, the container remains closed and is opened only by the consumer at his table. In case of hot containers such an opening operation is not without certain difficulties.
  • a convenient known way of opening such containers resides in completely tearing through the lid by means of a pull tab secured thereto and the remaining two lateral portions are removed sideways by hand. The torn-off middle portion rolls up in a coil-like manner. If at its underside gravy or the like adhered, such material may drip, squirt or spill on the user.
  • the lid in a con- 5 tainer of the aforenoted type, is provided, at those sides which lie on second flange zones, with pull tabs which are integral continuations of the associated crimp zones and have base zones below the bent corner ranges of the receptacle flange.
  • the second flange zones are opposed to one another and are located adjacent the first flange zones.
  • the crimps of the lid By means of the pull tabs the crimps of the lid, with exception of the crimps situated at the aforenoted two first flange ranges, may be loosened to such an extent that the lid may be removed in its entirety by sliding it, with the application of a very small force, along the remaining crimped zones which are constituted by the first flange ranges and which serve as guide rails.
  • the container according to the invention may be opened with ease without the danger of spilling or squirting its contents. Also, it may be opened without any difficulty even in a hot condition, since the pull tabs have a lower temperature than the remainder of the container.
  • the opening of the crimp may be effected exclusively by means of the pull tabs, so that, as a rule, no other container portions have to be touched by hand.
  • the sliding of the lid on the first flange ranges for the purpose of its removal may be effected by pulling on one of the two pull tabs or, if desired, by simultaneously pulling on both tabs.
  • the receptacle may be held stationary by exerting a light pressure on an exposed flange range.
  • such containers are disposed, during opening, in a depression of a tray.
  • an immobilization of the re ceptacle by hand during the sliding motion of the lid is not necessary.
  • the removed lid is not torn into several parts, it may be disposed in a very simple manner or it may serve as a tray beneath the container portion. After the food has been consumed, it may be collected for disposal together with the receptacle with one manual operation.
  • lid may correspond to lid structures of known type.
  • FIG. 1 is a partially broken-away top plan view of the preferred embodiment
  • FIG. 2 is a sectional view along line AB of FIG. 1;
  • FIG. 3 is a fragmentary sectional view along line C-D of FIG. 1;
  • FIG. 4 is a plan view of a planar blank of the lid forming part of the container illustrated in FIG. 1;
  • FIG. 5 is a fragmentary sectional view along line E-F of FIG 4;
  • FIG. 6 is a modification of the structure shown in FIG. 3.
  • FIG. 7 is a view similar to FIG. 4 illustrating an alternate embodiment of the pull tabs.
  • FIG. 8 is a view similar to FIG. 1 illustrating an alternate embodiment of the pull tabs.
  • the container shown therein comprises a receptacle 10 and a lid 11 which serves for covering the receptacle opening.
  • Both components 10 and 11 are made of thin aluminum foils; the lid 11 has a wall thickness that is less than that of the receptacle 10 and is approximately 0.03 0.08, preferably 0.04 0.05 mm.
  • the receptacle 10 which is shaped as a serving dish, has, in the illustrated preferred embodiment, a continuous horizontal, outwardly directed flange 12, having a rolled-in edge 13 for the purpose of reinforcement and better support.
  • the flange 12 has a substantially rectangular outline, wherein the straight flange ranges 15, 16, 17 and 18 are connected to one another by rounded corner zones 14, whose radius of curvature is approximately 1.5 2.5 cm.
  • the long straight flange zones 16, 18 form first flange zones, while the short flange zones 15, 17 form the second flange zones.
  • the flange 12 of the receptacle 10 may have an outline and orientation different from those shown in FIGS. 1 and 2.
  • it may be bent slightly angularly downwardly at an angle of about 10 25 with respect'to the opening plane of the receptacle 10 (FIG. 6).
  • the receptacle 10 is of known structure.
  • each crimp range in the second flange zone or 17 is provided with a sole, relatively wide pull tab.
  • two or more pull tabs may be provided that are disposed side-by-side and separated from one another by means of a slit or a triangular cutout.
  • pull tabs 22a, 22b, 23a and 23b are shown. It is also feasible to provide separate pull tabs for each comer zone; these last-named pull tabs would then serve only for the disengagement of the crimp in the corner zones.
  • the base lines 24 of the grip tabs will become crease lines of the lid 11, where the crimp range 19 of the lid 11, lying against the underside of the flange 12 terminates and continues as the pull tab 22 or 23.
  • the grip tabs begin at the base lines 24 which terminate at locations 26. The latter are situated approximately in the middle of each rounded corner zone.
  • each pull tab does not have to extend as far as the mid point of the rounded corner zones. It may, however, extend even therebeyond, for example as shown in FIG. 8, or as far as the beginning of the first flange zones l6, 18.
  • the pull tabs 22, 23 are folded over the upper side of the lid 11 as illustrated in FIGS. 1 and 2.
  • slits 27 there are provided four slits 27, one situated at each terminus of the straight first flange ranges l6 and 18 of the receptacle 10. With each pair of oppositely disposed, aligned slits 27 there is associated a pre-' formed crease line 29 (also shown in FIG. 5) which extends from one slit to the other.
  • the aforenoted slits 27 and crease lines 29 facilitate the removal of the lid 11 from the receptacle l0 and make such operation entirely secure as will now be described.
  • the two pull tabs 22, 23 are grasped with the left and the right hand and are pulled outwardly in the direction of arrows 30 until the crimp zones 19 adjacent the base lines 24 are pulled outwardly and upwardly and are thus disengaged from the flange 12.
  • the crimp zones 19 adjacent the base lines 24 are pulled outwardly and upwardly and are thus disengaged from the flange 12.
  • the latter and the crimp zones adjoining the base lines 24 extend then from the flange 12 of the receptacle 10 generally outwardly as illustrated in dash-dotted line at 31 in FIG. 2.
  • the crimp at the comer zones may be entirely disengaged in a simple manner by bending upwardly the two outwardly pulled zones of the lid, for example, into the positions indicated at 32 in FIG. 2.
  • the crimp will be entirely disengaged in the corner zones.
  • the buckling of the corresponding ranges of the lid 11 about the crease lines 29 and the complete disengagement of the crimp is particularly securely ensured and made easy by the slits 27.
  • the lid 11 By using a very small force it is now possible to entirely remove the lid 11 in a direction parallel to the opening plane of the receptacle 10 by pulling it in either one or the direction as indicated by the arrow 40.
  • the two first straight flange ranges 16, 18 serve as guides (guide rails) for those edge ranges of the lid 11 which are bent thereabout.
  • a two-part thin-walled metal container for storing and serving prepared food, said container being of the type that has a receptacle and a lid removably secured thereto for covering the same, the improvement comprising,
  • An improvement as defined in claim 1 including two crease lines preformed in the upper side of said lid and extending substantially from one first flange zone t0 the other and being spaced from said second flange 4.
  • An improvement as defined in claim 2 including oppositely aligned pairs of slits provided in said continuous edge zone at each end of each crease line.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Package Specialized In Special Use (AREA)
  • Packages (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
  • Table Devices Or Equipment (AREA)
US00278380A 1971-08-06 1972-08-07 Thin-walled container Expired - Lifetime US3854649A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2139588A DE2139588C3 (de) 1971-08-06 1971-08-06 Dünnwandiger Behälter für Fertiggerichte, Essensportionen o.dgl.

Publications (1)

Publication Number Publication Date
US3854649A true US3854649A (en) 1974-12-17

Family

ID=5816062

Family Applications (1)

Application Number Title Priority Date Filing Date
US00278380A Expired - Lifetime US3854649A (en) 1971-08-06 1972-08-07 Thin-walled container

Country Status (12)

Country Link
US (1) US3854649A (sv)
AT (1) AT333648B (sv)
BE (1) BE787256A (sv)
CH (1) CH545086A (sv)
DE (1) DE2139588C3 (sv)
DK (1) DK143937C (sv)
ES (1) ES214231Y (sv)
FR (1) FR2149966A5 (sv)
GB (1) GB1346539A (sv)
IT (1) IT972166B (sv)
NL (1) NL7210810A (sv)
SE (1) SE388401B (sv)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4252268A (en) * 1979-08-24 1981-02-24 Maryland Cup Corporation Lid for ovenable trays and resulting combined container
US4272010A (en) * 1980-01-31 1981-06-09 International Paper Company Food service container and lid
US4386706A (en) * 1981-10-06 1983-06-07 Champion International Corporation Food container and cover therefor
US4469241A (en) * 1983-07-01 1984-09-04 Scott Westphal Tamper and child-resistant container
US4535890A (en) * 1979-12-28 1985-08-20 Medipack Ag Container which is a form of packaging in particular for medicaments and the like and process for its manufacture
EP0154329A2 (de) * 1984-03-08 1985-09-11 Alcan Deutschland Gmbh Behälter mit Bördelverschluss
US5595296A (en) * 1995-02-14 1997-01-21 Poly Vac, Incorporated Sterilization and storage container
US5632398A (en) * 1996-04-19 1997-05-27 Polar Ware Company Carrying cover for a steam table pan
US5762226A (en) * 1996-04-19 1998-06-09 Polar Ware Company Steam-table-pan carrying cover with pan-retaining stop
US6210638B1 (en) * 1998-03-20 2001-04-03 Jewel Precision Plastic sterilization case
US7108150B1 (en) * 2005-01-14 2006-09-19 Rouse Jason C Trash receptacle unit
EP2172405A1 (en) * 2008-10-01 2010-04-07 Impress Group B.V. Closing membrane for a container, having an improved access-finger

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK99776A (da) * 1975-03-19 1976-09-20 Pfeiffer Ohler Eisen Theob Dekfolie for beholder med en aben side
DE3018876C2 (de) * 1980-05-16 1984-03-29 Ohler Eisenwerk, Theob. Pfeiffer, 5970 Plettenberg Deckel aus Folienmaterial für rechteckige Behälter, insbesondere Menüschalen, sowie Verfahren zu dessen Herstellung
DE3100761A1 (de) * 1981-01-13 1982-07-29 Ohler Eisenwerk, Theob. Pfeiffer, 5970 Plettenberg "deckel aus folienmaterial fuer rechteckige behaelter sowie verfahren zu dessen herstellung"
AT383789B (de) * 1981-01-13 1987-08-25 Alcan Ohler Gmbh Deckel aus folienmaterial fuer rechteckige behaelter sowie verfahren zu dessen herstellung
DE3230422A1 (de) * 1982-08-16 1984-02-16 Gerd 5992 Nachrodt-Wiblingwerde Wachsmuth Deckel fuer einwegbehaelter
DE3812118A1 (de) * 1988-04-12 1989-10-26 Jowe Kost Gmbh & Co Kg Behaelter fuer ein fertiggericht

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2674536A (en) * 1948-12-29 1954-04-06 Fisher Jacob Precooked frozen food package
US2903173A (en) * 1956-05-09 1959-09-08 King Container Corp Container end closure
US2944726A (en) * 1958-02-11 1960-07-12 Wayne W Mccauley Flip-top package
US3153505A (en) * 1963-01-28 1964-10-20 Packaging Corp America Package construction

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB671933A (en) * 1949-02-14 1952-05-14 Metal Box Co Ltd Improvements in or relating to covered dish-like metal containers for food
DE1536358B1 (de) * 1965-11-16 1970-12-17 Wagner Fa Wilhelm Behaelter aus Aluminiumfolie od.dgl.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2674536A (en) * 1948-12-29 1954-04-06 Fisher Jacob Precooked frozen food package
US2903173A (en) * 1956-05-09 1959-09-08 King Container Corp Container end closure
US2944726A (en) * 1958-02-11 1960-07-12 Wayne W Mccauley Flip-top package
US3153505A (en) * 1963-01-28 1964-10-20 Packaging Corp America Package construction

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4252268A (en) * 1979-08-24 1981-02-24 Maryland Cup Corporation Lid for ovenable trays and resulting combined container
US4535890A (en) * 1979-12-28 1985-08-20 Medipack Ag Container which is a form of packaging in particular for medicaments and the like and process for its manufacture
US4272010A (en) * 1980-01-31 1981-06-09 International Paper Company Food service container and lid
US4386706A (en) * 1981-10-06 1983-06-07 Champion International Corporation Food container and cover therefor
US4469241A (en) * 1983-07-01 1984-09-04 Scott Westphal Tamper and child-resistant container
US4629112A (en) * 1984-03-08 1986-12-16 Alcan Ohler Gmbh Receptacle with flange closure
EP0154329A2 (de) * 1984-03-08 1985-09-11 Alcan Deutschland Gmbh Behälter mit Bördelverschluss
EP0154329A3 (en) * 1984-03-08 1987-08-19 Alcan Ohler Gmbh Container with closure fixed by rolling it on the container flange
US5595296A (en) * 1995-02-14 1997-01-21 Poly Vac, Incorporated Sterilization and storage container
US5632398A (en) * 1996-04-19 1997-05-27 Polar Ware Company Carrying cover for a steam table pan
US5762226A (en) * 1996-04-19 1998-06-09 Polar Ware Company Steam-table-pan carrying cover with pan-retaining stop
US6210638B1 (en) * 1998-03-20 2001-04-03 Jewel Precision Plastic sterilization case
US7108150B1 (en) * 2005-01-14 2006-09-19 Rouse Jason C Trash receptacle unit
EP2172405A1 (en) * 2008-10-01 2010-04-07 Impress Group B.V. Closing membrane for a container, having an improved access-finger

Also Published As

Publication number Publication date
DE2139588B2 (de) 1980-09-18
ES214231U (es) 1976-07-01
IT972166B (it) 1974-05-20
GB1346539A (en) 1974-02-13
NL7210810A (sv) 1973-02-08
FR2149966A5 (sv) 1973-03-30
DE2139588A1 (de) 1973-02-15
CH545086A (de) 1973-12-15
AT333648B (de) 1976-12-10
BE787256A (fr) 1972-12-01
ES214231Y (es) 1976-12-01
SE388401B (sv) 1976-10-04
ATA655972A (de) 1976-03-15
DE2139588C3 (de) 1981-04-30
DK143937C (da) 1982-04-19
DK143937B (da) 1981-11-02

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