US3145896A - Divisible molded article - Google Patents

Divisible molded article Download PDF

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Publication number
US3145896A
US3145896A US224714A US22471462A US3145896A US 3145896 A US3145896 A US 3145896A US 224714 A US224714 A US 224714A US 22471462 A US22471462 A US 22471462A US 3145896 A US3145896 A US 3145896A
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US
United States
Prior art keywords
carton
bottom section
end walls
section
lid
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
US224714A
Other languages
English (en)
Inventor
Richard F Reifers
Henry A Lord
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.)
Diamond National Corp
Original Assignee
Diamond National Corp
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
Priority to NL296051D priority Critical patent/NL296051A/xx
Priority to BE634210D priority patent/BE634210A/xx
Application filed by Diamond National Corp filed Critical Diamond National Corp
Priority to US224714A priority patent/US3145896A/en
Priority to GB21700/63A priority patent/GB1040628A/en
Priority to CH757763A priority patent/CH427635A/de
Priority to DED27097U priority patent/DE1979062U/de
Priority to LU43981D priority patent/LU43981A1/xx
Priority to AT530963A priority patent/AT243676B/de
Priority to NO150138A priority patent/NO117584B/no
Priority to FI631801A priority patent/FI44103C/fi
Application granted granted Critical
Publication of US3145896A publication Critical patent/US3145896A/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
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/30—Containers, packaging elements or packages, specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure
    • B65D85/32—Containers, packaging elements or packages, specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure for eggs
    • B65D85/324—Containers with compartments made of pressed material

Definitions

  • This invention relates generally to molded articles and more particularly to an improved molded pulp egg carton which is divisible or separable to form two individual and structurally functional carton segments.
  • Primary objects of the present invention are to provide a novel divisible or separable molded pulp egg carton and carton segments overcoming the shortcomings of the prior art, and which in the original and unseparated cartons afford ventilation and egg viewing means;
  • the original carton including a reinforcing structure maintaining the original carton as a single unit and lending itself to a natural division into separated carton segments;
  • the individual or separated carton segments having an individual structural strength readily protecting the eggs at both ends and having a substantially symmetrical and pleasing appearance lending themselves to display;
  • the separated carton segments further including individual lock flap means; and the originally produced carton lending itself to ready and economical production as well as aifording ready denesting on automatic equipment during the packing of eggs in the undivided cartons.
  • FIG. 1 is a front elevation of a molded pulp egg carton incorporating the invention
  • FIG. 2 is a top plan View of FIG. 1;
  • FIG. 3 is an enlarged end elevation looking, from left to right at FIG. 1;
  • FIG. 4 is an enlarged vertical section taken on the plane of line 44 of FIG. 2 on the central transverse axis of the carton; showing the end elevation appearance of one of the carton segments after the carton has been divided;
  • FIG. 5 is an enlarged, fragmentary, plan view looking into an open carton and showing the areas of separation of the lid and bottom section of the carton;
  • FIG. 6 is an enlarged, fragmentary, vertical section taken on the plane of line 6-6 of FIG. 4 on the longitudinal axis of the carton, and showing the separable reinforcing structure between the unseparated carton segments;
  • FIG. 7 is an enlarged fragmentary vertical section taken on the plane of line 77 of FIG. 4, with a portion of one of the lock flaps broken away for purposes of clarity.
  • the carton is produced on suitable molds from the slurry of pulp material to provide a pulp preform which is subsequently subjected to drying, pressing, re-working, etc.
  • the novel egg carton is indicated generally at 10 and comprises a cellular bottom section 12, and a lid section 14.
  • the bottom section of the originally produced carton will hold one dozen eggs and is conventionally described as a 2 x 6.
  • the bottom and lid sections 12 and 14 are secured on the central transverse axis upon which line 4-4 of FIG. 2 falls, by a separable reinforcing structure indicated generally at 16.
  • the separable structure 16 when divided will provide individual and structurally stable carton segments 18 and 20.
  • the bottom section 12 of the carton comprises a plurality of depending cells 22, each cell including; see FIG. 5, a bottom wall 24 integral with vertically extending side walls and right angularly disposed transverse and longitudinal saddle portions 26 and 28, respectively.
  • the saddles 26 and 28 merge into vertically extending steeply inclined or tapered posts, each carton segment 18 and 20 incorporating two of such posts indicated at 30 and 30', respectively as shown by dotted lines in FIG. 1.
  • the vertical posts of the present embodiment are shown as extending above the peripheral margins 32 and 32 of the bottom section 12, however, the novel features of the invention could readily be incorporated in a carton which includes posts which terminate substantially in the plane of a peripheral margin of the bottom section 12.
  • Bottom section 12 has hingedly connected at 34, 34, see FIGS. 1 and 5, longitudinally spaced lock flaps 36, 36, respectively, which have, forwardly-projecting abutment or lock buttons 38 and 38.
  • the lid section 14 is hingedly connected at 40 and 40' to the bottom section 12 and each of the carton segments 18 and 20 respectively include a substantially planar top 42 and 42' integral with depending front and rear side Walls 44, 46 and 44', 46', respectively, terminating in peripheral margin portions 48 and 48'.
  • the side walls 44 and 44' respectively include transverse apertures 50 and 50', respectively, removably receiving lock buttons 38 and 38, respectively.
  • the carton segments 18 and 20 include, integral with the top and side walls thereof, depending end walls 52 and 54 and 52' and 54', respectively, the end walls 54, 54 being inner converging end walls of the lid sections of the respective carton segments.
  • the end walls 52 and 52' each include therein, as most clearly seen in FIG. 3, a downwardly opening U-shaped notch portion 58 and 58 which provides a ventilation and egg-observation aperture in the carton.
  • the notched portions 58 and 58 are bordered by transverse reinforcing flange portions 60 and 60', respectively, which terminate at the peripheral margins 48 and 48' to reinforce the carton segment lid sections and essentially provide handles by which the carton may be readily lifted.
  • a longitudinally extending upper, tunnel-like element 70 Formed integrally with the inner end walls 54 and 54' of the respective carton segments is a longitudinally extending upper, tunnel-like element 70 which when separated at the line of separation 66 provides reinforcing flange segments 80, 80 overlying a downwardly opening notch portion 82 and 82 in the respective carton seg ments.
  • the downwardly opening notch portion 82, 82 of the respective carton segments is slightly higher than the downwardly opening notches 58 and 58' and provides in the undivided carton a through opening between the respective carton segments to provide good ventilation for the eggs contained and stored therein.
  • the notched in portions 62 and 64 providing a natural point at which the segments may be twisted and separated.
  • the downwardly opening notched portions 82 and 82 will permit the individual carton segments to have good ventilation as well as to permit the eggs of the end cells to be readily examined by purchasers.
  • the bordering ends 83 and 85 of the notch portions 82, 82; see FIG. 4, are substantially parallel to the carton side walls 44, 46 and 44', 46', respectively, to afford the proper vertical load transmittal.
  • the lower altitude at the notches 58, 58' affords necessary structural strength and prevents cover rupture at the notches during vertical loading.
  • the bottom section 12 includes a polygonal central panel 84 divided by the line of separation 68; see FIG. 5, into substantially triangular segments 86 and 86.
  • the panel 84 is disposed substantially in the plane of the peripheral margins 32 and 32' of the respective bottom sections of the separated carton segments.
  • Depending from opposite sides 88 and 90 of the panel 84 are low V- shaped reinforcing beams 92 and 94 which are divided by the line of separation 68.
  • These beam-like elements 92 and 94 extend longitudinally beneath the tunnel element 70 and reinforce the unseparated carton against bending moments about the lines of separation 66 and 68.
  • the V-shaped beam-like elements have sides 92 and 94 which are generally in angular alignment with the respective outer and inner surfaces of the vertically extending posts 30 and front and rear walls of the cells in the bottom section and thus they are disposed in what might be described as a non-load area to accordingly eliminate or avoid structural faults in the carton or carton segments when they are subject to vertical loading when they are stacked and loaded one upon the other.
  • each of the elements resists separation of the other during upward or downward bending moments between the respective adjacent and undivided carton segments.
  • the notched in portions 62 and 64 provide a normal and natural breaking line extending into the perforations at lines of separation 66 and 68. This facilitates the ready separation of the two carton segments, and when this is accomplished the carton segments will have structurally stable end walls, substantially identical and yet affording visual access to the eggs within the carton, and good ventilation thereof.
  • each of the separated segments have hand grip portions at the opposite ends as does the unseparated carton. Still further, each of the separated segments incorporate individual lock flap means therein so that the carton segments 18 and 20 function as independent units.
  • the cover section includes therein notched portions approximately one-half the altitude of the cover.
  • the tunnel merges into inclined walls 54, 54' and the front and side walls 44, 46 and 44', 46. This wall inclination not only provides a visually pleasing appearance in the carton and separated carton segments, but maintains center flexing to a minimum.
  • V-notches as seen in FIG. 4 are approximately equal to the depth of the notches or connecting bridges between adjacent cells.
  • the V-notches are connected by flanges substantially in the same plane or altitude as the bordering flanges of the bottom or cell section. This construction lends itself to good internal structural geometry and carton stability as well as providing carton separation and a stable geometry for the separate carton separation and a stable geometry for the separate carton segments.
  • An egg carton segment comprising a lid and cellular bottom section, said bottom section including steeply inclined side and end Walls terminating in peripheral margin portions, a plurality of normally disposed saddle portions extending inwardly from said side and end walls and merging into a pair of steeply tapered posts extending above the peripheral margin of said bottom section and spaced inwardly from said side and end walls and forming two parallel rows of egg cells with three cells to a row, said lid section including a substantially planar top integral with depending side and end walls, one of said end section side walls being hingedly connected to the peripheral margin of one of said bottom section side walls and the other lid section side wall including longitudinally spaced, lock-flap engaging means, said other bottom section side wall including a pair of longitudinally spaced lock flaps hingedly connected to the peripheral margin thereof and respectively detachably engageable with said longitudinally spaced lock-flap engaging means, said lid section end walls including downwardly opening notches forming ventilation and egg observation apertures in the ends thereof, one end wall of said bottom section including a pair of space
  • a separable one-piece molded pulp egg carton comprising a lid and cellar bottom section, said lid section being hingedly connected to said bottom section along one side edge thereof, said bottom section including lock flap means hingedly connected along the side edge opposite that to which the lid section is hingedly connected, said lock flap means including means detachably engageable with said lid section, the improvement comprising separable, intermediate carton-reinforcing structure forming similar end structure on a pair of separate carton segments formed from said separable egg carton, said lid section comprising depending end and side walls integral with a substantially planar top panel, said end walls including downwardly opening notch portions forming ventilation and observation apertures at opposite ends of said carton, said separable, intermediate carton-reinforcing structure including a pair of converging, intermediate transverse walls terminating in a separable, downwardlyopening tunnel portion forming a through opening in said one-piece carton and providing ventilation and observation apertures in said carton from end-to-end, said lid section including longitudinally projecting reinforcing flange
  • the cellular bottom section comprises longitudinally disposed, separable, intermediate reinforcing structure including V- shaped, longitudinally disposed, beam-like ribs disposed 6 transversely of and at opposite sides of said polygonal panel in said bottom section, said V-shaped, beam-like ribs including converging sides substantially coplanar With respective outer side walls of said bottom section and opposed surfaces of opposite sides of said tapered post portions.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packaging Frangible Articles (AREA)
  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
  • Cultivation Receptacles Or Flower-Pots, Or Pots For Seedlings (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Detergent Compositions (AREA)
US224714A 1962-09-19 1962-09-19 Divisible molded article Expired - Lifetime US3145896A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
NL296051D NL296051A (de) 1962-09-19
BE634210D BE634210A (de) 1962-09-19
US224714A US3145896A (en) 1962-09-19 1962-09-19 Divisible molded article
GB21700/63A GB1040628A (en) 1962-09-19 1963-05-30 Improvements in or relating to molded cartons
CH757763A CH427635A (de) 1962-09-19 1963-06-18 Aus Papierstoff geformter Verpackungsbehälter
DED27097U DE1979062U (de) 1962-09-19 1963-06-28 Zerlegbarer einteilig geformter karton.
LU43981D LU43981A1 (de) 1962-09-19 1963-06-29
AT530963A AT243676B (de) 1962-09-19 1963-07-03 Aus einem Stück geformter, in zwei Hälften teilbarer Eierkarton
NO150138A NO117584B (de) 1962-09-19 1963-09-17
FI631801A FI44103C (fi) 1962-09-19 1963-09-19 Jaettava munarasia

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US224714A US3145896A (en) 1962-09-19 1962-09-19 Divisible molded article

Publications (1)

Publication Number Publication Date
US3145896A true US3145896A (en) 1964-08-25

Family

ID=22841855

Family Applications (1)

Application Number Title Priority Date Filing Date
US224714A Expired - Lifetime US3145896A (en) 1962-09-19 1962-09-19 Divisible molded article

Country Status (10)

Country Link
US (1) US3145896A (de)
AT (1) AT243676B (de)
BE (1) BE634210A (de)
CH (1) CH427635A (de)
DE (1) DE1979062U (de)
FI (1) FI44103C (de)
GB (1) GB1040628A (de)
LU (1) LU43981A1 (de)
NL (1) NL296051A (de)
NO (1) NO117584B (de)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3185370A (en) * 1959-10-05 1965-05-25 Diamond Int Corp Molded pulp egg carton
US3511433A (en) * 1968-03-13 1970-05-12 Sinclair Koppers Co Unitary foam sheet container
DE1611970B1 (de) * 1967-05-31 1971-11-25 Portland Co Eierformschachtel
US3767103A (en) * 1971-02-22 1973-10-23 Diamond Int Corp Egg carton cells for jumbo-sized eggs
DE2352943A1 (de) * 1972-10-26 1974-05-02 Packaging Corp America Formschachtel fuer die aufnahme von zerbrechlichen guetern
US3829056A (en) * 1972-06-12 1974-08-13 Whirlpool Co Apparatus for freezing ice bodies
US4015766A (en) * 1975-01-27 1977-04-05 Aktieselskabet Brodrene Hartmann Package of fiber material or other resilient material for receiving fragile articles, particularly eggs
US4057169A (en) * 1977-02-17 1977-11-08 Keyes Fibre Company Dual tongue and slot container lock
US4448344A (en) * 1982-09-01 1984-05-15 Diamond International Corporation Egg cell construction
US20050145529A1 (en) * 2003-12-31 2005-07-07 Andrews Alan P. Egg carton
WO2009148310A1 (en) * 2008-06-03 2009-12-10 Huhtamaki Nederland B.V. Packaging unit
USD1002388S1 (en) * 2021-01-22 2023-10-24 Brødrene Hartmann A/S Egg packaging

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4492331A (en) * 1981-09-29 1985-01-08 Packaging Corporation Of America Multi-row egg cartons

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2078488A (en) * 1936-04-03 1937-04-27 Ralph A Farnham Protective article of manufacture
US2093280A (en) * 1934-12-06 1937-09-14 Koppelman Morris Self-locking carton and packing
US2455295A (en) * 1942-10-23 1948-11-30 Shellmar Products Corp Cellular carton
US2655303A (en) * 1947-03-28 1953-10-13 Gen Package Corp Molded pulp carton
GB800949A (en) * 1955-12-21 1958-09-03 Hartmann As Brdr Container of fibrous material for the storage of fragile or tender objects
FI30640A (fi) * 1955-04-26 1959-09-10 Hartmann As Brdr Förpackning av fibermassa för ett antal ägg eller liknande sköra föremål
US2974847A (en) * 1957-10-24 1961-03-14 Diamond National Corp Packages or cartons for eggs and other fragile articles

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2093280A (en) * 1934-12-06 1937-09-14 Koppelman Morris Self-locking carton and packing
US2078488A (en) * 1936-04-03 1937-04-27 Ralph A Farnham Protective article of manufacture
US2455295A (en) * 1942-10-23 1948-11-30 Shellmar Products Corp Cellular carton
US2655303A (en) * 1947-03-28 1953-10-13 Gen Package Corp Molded pulp carton
FI30640A (fi) * 1955-04-26 1959-09-10 Hartmann As Brdr Förpackning av fibermassa för ett antal ägg eller liknande sköra föremål
GB800949A (en) * 1955-12-21 1958-09-03 Hartmann As Brdr Container of fibrous material for the storage of fragile or tender objects
US2974847A (en) * 1957-10-24 1961-03-14 Diamond National Corp Packages or cartons for eggs and other fragile articles

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3185370A (en) * 1959-10-05 1965-05-25 Diamond Int Corp Molded pulp egg carton
DE1611970B1 (de) * 1967-05-31 1971-11-25 Portland Co Eierformschachtel
US3511433A (en) * 1968-03-13 1970-05-12 Sinclair Koppers Co Unitary foam sheet container
US3767103A (en) * 1971-02-22 1973-10-23 Diamond Int Corp Egg carton cells for jumbo-sized eggs
US3829056A (en) * 1972-06-12 1974-08-13 Whirlpool Co Apparatus for freezing ice bodies
DE2352943A1 (de) * 1972-10-26 1974-05-02 Packaging Corp America Formschachtel fuer die aufnahme von zerbrechlichen guetern
US4015766A (en) * 1975-01-27 1977-04-05 Aktieselskabet Brodrene Hartmann Package of fiber material or other resilient material for receiving fragile articles, particularly eggs
US4057169A (en) * 1977-02-17 1977-11-08 Keyes Fibre Company Dual tongue and slot container lock
US4448344A (en) * 1982-09-01 1984-05-15 Diamond International Corporation Egg cell construction
US20050145529A1 (en) * 2003-12-31 2005-07-07 Andrews Alan P. Egg carton
US7255231B2 (en) 2003-12-31 2007-08-14 Pactiv Corporation Egg carton
WO2009148310A1 (en) * 2008-06-03 2009-12-10 Huhtamaki Nederland B.V. Packaging unit
US20110132791A1 (en) * 2008-06-03 2011-06-09 Huhtamaki Nederland B.V. Packaging unit
USD1002388S1 (en) * 2021-01-22 2023-10-24 Brødrene Hartmann A/S Egg packaging

Also Published As

Publication number Publication date
BE634210A (de)
FI44103B (de) 1971-04-30
LU43981A1 (de) 1963-08-29
GB1040628A (en) 1966-09-01
DE1979062U (de) 1968-02-15
NO117584B (de) 1969-08-25
CH427635A (de) 1966-12-31
NL296051A (de)
AT243676B (de) 1965-11-25
FI44103C (fi) 1971-08-10

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