US2979245A - Molded pulp carton - Google Patents

Molded pulp carton Download PDF

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Publication number
US2979245A
US2979245A US686172A US68617257A US2979245A US 2979245 A US2979245 A US 2979245A US 686172 A US686172 A US 686172A US 68617257 A US68617257 A US 68617257A US 2979245 A US2979245 A US 2979245A
Authority
US
United States
Prior art keywords
posts
carton
section
flap
edge
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
US686172A
Other languages
English (en)
Inventor
Randall Walter Hall
Urban H Despres
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.)
Keyes Fibre Corp
Original Assignee
Keyes Fibre 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 BE571359D priority Critical patent/BE571359A/xx
Priority to NL102222D priority patent/NL102222C/xx
Application filed by Keyes Fibre Corp filed Critical Keyes Fibre Corp
Priority to US686172A priority patent/US2979245A/en
Priority to CH6417958A priority patent/CH363933A/de
Priority to GB30164/58A priority patent/GB846199A/en
Priority to DEK35823A priority patent/DE1187990B/de
Priority to FR1211008D priority patent/FR1211008A/fr
Application granted granted Critical
Publication of US2979245A publication Critical patent/US2979245A/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 to cartons, and it particularly relates to cartons of the molded pulp type which have a pocketed section for holding the articles to be packed, such as eggs, to which is hingedly connected an unpocketed cover section which overfolds onto the pocketed section.
  • Cartons of the above general type have been on the market for many years and are gaining increasing commercial importance; however, their acceptance hasbeen somewhat retarded until now by various deficiencies such as a failure to provide for an adequate cushioning of the eggs or other articles between the overfolded sections and a failure to provide a. strong 'and eflicient locking means which is yet simple in construction and easy to use.
  • Another object of the present invention is to provide a carton of the above type which has increased strength and which is capable of firmly holding eggs or other such articles of various sizes.
  • Fig. l isa top plan view of a carton embodying the present invention, the carton being shown in flat,open condition;
  • Fig. 2 is a sectional, view taken Fig. 3 is a fragmentary cross-sectional view of the pocketed section of the device as taken on line 3--3 of Fig. 1; n v V Fig. 4 is a cross-sectional view of the device in closed and locked position;
  • Fig. 5 is a fragmentary, detailed sectional view of the pocketed section .of a carton such as shown in Figs.
  • FIG. 6 is a fragmentary top plan view of the flap and buttons used with the carton of Fig. 5;
  • Fig. 7 is a fragmentary detailed sectional view showing the alternative form of locking means, in locking position with the carton closed;
  • Fig. 8 is atop plan view, similar to Fighl, 'of a modified form of carton embodying the present invention.
  • Fig. 9 is a sectional view taken on line 9-.Q of Fig. 8; i
  • Fig. 10 is a cross-sectional view of thefa'rton-of :8, with thecarton' cld'sedjarid'thelloek means engaged; and Fig. 11. isia side yiew, partly in elevation and partly in section, taken cm-1int 11- 11orFig.8.
  • FIG. 1I-3'a jcarton 2,979,245 Patented Apr. 1 1 1961 rangement comprising a pocketed section 10 and a cover section 12.
  • the section 10 comprises alternate rows of octagonal pockets 14 which are separated from each other in perpendicular directions by low ribs 16. Between each row of pockets is provid d a row of hollow substantially frusto-conical posts 18, the posts being ofiset from the plane of the pockets so that the pockets are separated from each other by these posts in the diagonal plane, as best shown in Fig. l.
  • the ribs 16 have inclined'side walls 20 which taper outwardly as they ascend and which ascend only partly up toward the upper portions of the posts 18. They integrally connect with the adjacent posts well below the tops of the posts so that they form interruptions in the lower portions of the posts. The segments of the posts between these interruptions are designated 22.
  • the side walls 20'of the ribs coact with the segments 22 of the posts to form the octagonal side wall structure of each pocket.
  • the side Walls of the pockets 14 are partly formed by the inclined walls 29 of the ribs 16 and the segments 22 of the posts as in the center, but the remainder of the pockets are formed by segments of half-posts such as shown at 24, 25 and 26, inclined walls 28 between the half-posts, and, in the corners, by partial corner posts 30.
  • the half-posts 26 at the freeedge of the carton and walls 28 extend to planes above the. tops of the ribs 16, these planes being illustrated as substantially common with each other and with the junction linefto be hereinafter described, but below the top plane of the posts 18.
  • each pocket.14- is a small hollow tion 38 being at a somewhat steeper angle of incline than the lower portion 36.;
  • junction line 40 is provided above the'plane of the ribs 16 since, in this manner, the ribs, while adding strength to the carton, do not interfere with the resiliency of the support offered at the area of the junction line 40.
  • a peripheral wall 42 On the periphery of the section 10, extending upwardly in an outwardly inclined direction from the plane of the junction line 40 which is substantially common with the tops of the posts 26 and walls 28, is a peripheral wall 42.
  • This wall 42 is inclined at the same angle as the upper portions 38 of the posts 18, as well as of the upper portions of half-posts 24 and 25 and corner posts while the half-posts 26 and walls 28 are inclined at a less steep angle corresponding to the lower portions 36 of the posts 18. In this manner, the junction line 40 is extended to the sides of the carton.
  • a peripheral rim 44 extends outwardly from the edge of the section 10 as defined by the upper edge of the peripheral wall 42.
  • the portion of the rim 44 which is adjacent the section 12 is integrally connected by a hinge connection 46 to a similar rim 48 on the edge of the traylike cover section 12.
  • a locking arrangement which includes a pair of semi-circular holes 50. These holes are formed in the tops of the two end-most half-posts 26 on the free edge of the section 10 opposite the hinged edge.
  • the locking arrangement also includes a flap 52 having locking buttons 54, each of which has an inclined underside 55 which acts as a camming surface against the inner face of peripheral wall 42 as the buttons are inserted in the appropriate holes 50.
  • the flap is positioned on that edge of the cover section 12 which is opposite the hinged edge of the cover, and the flap is, itself, hinged to the corresponding edge of the cover section by a hinge arrangement which forms an out- Wardly-extending square head 56 (best shown in Fig. 4).
  • the buttons 54 are provided adjacent each end of the flap and are positioned outwardly of the flaps outer edge, as best shown in Fig. 1.
  • the flap 52 When locking the carton, the flap 52 is brought down inside the wall 42 'of the lower section 10 and the buttons 54snap through the corresponding holes 50. In this position (as best shown in Fig. 4), the buttons, due to the resilient nature of the molded pulp flap construction, resiliently engage against the edges of the carton defining the holes. At the same time, the square bead 56 abuts against rim '44 of the lower section 10 to provide a limit stop on the downward movement of the cover section. Any tendency of the cover section to slip out and down over the bottom or pocketed section is resisted by the,
  • a highly important advantage of the provision of the flap 52 on the cover section 12' is the fact'that when the flap is inserted Within the outer wall of the pocketed section, withthe button in the slot .50, the walls of the pocketedsectionandthe cover section, are locked in supporting relationship without the ,necessity'of having the eggs contribute to the lateral positioningof the flap.
  • a modified form of locking arrangement is provided, such as shown in Figs. 5, 6 and 7.
  • a carton similar in substantially every way to the carton of Figs. 1-4, and having a pocketed section and a cover section 72, is provided with a locking means wherein the flap 74 is provided with buttons 76, and rear edges 78 of which are positioned slightly to the rear of the plane of the outer edge of the flap.
  • Such construction as clearly illustrated in Fig. 7, requires the openings 80 in the tops of the half-posts 82 to be extended around into the lower portion of the peripheral side wall 84, such side wall openings being indicated at 86.
  • the buttons 76 are positioned only so far to the rear of the outer edge of the flap as is necessary to avoid a line of weakness. This rearward positioning being held to a minimum, requires only a minimum extension of the openings into the side wall of the carton.
  • Figs. 8-11 there is shown a modified form of carton, this carton being of the standard 2 x 6 pocket arrangement and designated B.
  • this carton instead of having three pockets in each row, there are only two pockets, while the length of the carton is extended.
  • this carton is substantially similar to that of Fig. 1.
  • pocketed section 90 which is integrally hinged to tray-like cover section 92, is provided with openings 94' in two of its half-posts 95 at the free edge thereof, the openings94 having vertical extensions- 96 in theadjacent areas of the peripheral side wall.
  • the tops of the half-posts 95 are positioned at the junction line 97 similarly to half-posts 26.
  • Half-posts 98 at the rear edge extend up to the level of the tops of the posts 100; while half-posts 99 are slightly lower to provide ventilating notches, as best shown in Fig. 11.
  • buttons 101 on the flap 102 are spaced to coincide with the openings 94 and extend to the rear of the outer edge of the flap.
  • This locking arrangement although illustrated, may, if desired, be substituted by the locking arstrengthening ribs 103 serve to rigidity the. side walls of the cover section.
  • the ribs 103 adjacent the hinge abut against the tops ofhalf-posts 98 in thepocketed section when the carton is closed. This endt -end abutment increases the strength and rigidity of the hinge and h'elpsto prevent lateral spread of the cover section under pressure.
  • the abpve-described cartonB may be constructed without the vertical ribs 103'while the carton A may be provided with such ribs depending on the required characteristics of the particularcarton.
  • the carton A may, also, if desired, be provided with ventilating notches similar to those provided at the top of half-posts 99 in Fig. 11.
  • a molded pulp carton comprising. apocketed section and a tray-like cover section, said sections each hav- -'ing an upwardly and outwardly inclined peripheral wall defined at its uppe r edge by. an outwardly-extending rim, said sectionsfjbeing, integrally anfd hingedlylconnected at V "adjacent portionsof thir:i;rims, saidj poeketed section
  • the abovieflescribedlocking arrangement permits the, having a plurality 0f.
  • each pocket comprises an upper and lower inclined side wall area, the upper side wall area being inclined at a smaller angle to the center line of the pocket than the lower side wall area.
  • a molded pulp carton comprising a pocketed section and a tray-like cover section, each section having an upwardly and outwardly inclined peripheral wall defined at its upper edge by an outwardly-extending peripheral rim, said sections being integrally connected by a hinge between adjacent portions of their respective peripheral rims, said pocketed section having a plurality of rows of pockets alternating with parallel rows of generally frusto-conical, hollow posts, said posts extending up to a plane substantially common with the plane of the upper edge of said peripheral wall and being offset relative to said pockets, a plurality of ribs having upwardly and outwardly extending flat side walls extending radially from each of said posts and connecting said posts to the posts adjacent thereto, said ribs being positioned to separate each of said pockets from the pockets adjacent thereto, said ribs extending up to a plane lower than the upper plane of said posts and coasting with the lower portions of said posts to at least partially define the side wall areas of said pockets, a half-post at each end of each row of posts, the upper ends
  • junction line is positioned intermediate the top plane of said ribs and the top plane of said posts.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packaging Frangible Articles (AREA)
  • Cartons (AREA)
US686172A 1957-09-25 1957-09-25 Molded pulp carton Expired - Lifetime US2979245A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
BE571359D BE571359A (sv) 1957-09-25
NL102222D NL102222C (sv) 1957-09-25
US686172A US2979245A (en) 1957-09-25 1957-09-25 Molded pulp carton
CH6417958A CH363933A (de) 1957-09-25 1958-09-20 Aus Pappe bestehender Verpackungsbehälter
GB30164/58A GB846199A (en) 1957-09-25 1958-09-22 Molded pulp carton
DEK35823A DE1187990B (de) 1957-09-25 1958-09-23 Aus Papierbrei geformter Behaelter
FR1211008D FR1211008A (fr) 1957-09-25 1958-09-25 Carton moulé utilisable en particulier comme emballage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US686172A US2979245A (en) 1957-09-25 1957-09-25 Molded pulp carton

Publications (1)

Publication Number Publication Date
US2979245A true US2979245A (en) 1961-04-11

Family

ID=24755207

Family Applications (1)

Application Number Title Priority Date Filing Date
US686172A Expired - Lifetime US2979245A (en) 1957-09-25 1957-09-25 Molded pulp carton

Country Status (7)

Country Link
US (1) US2979245A (sv)
BE (1) BE571359A (sv)
CH (1) CH363933A (sv)
DE (1) DE1187990B (sv)
FR (1) FR1211008A (sv)
GB (1) GB846199A (sv)
NL (1) NL102222C (sv)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3207409A (en) * 1962-09-04 1965-09-21 Diamond Int Corp Molded pulp egg carton
US3215327A (en) * 1965-03-19 1965-11-02 Keyes Fibre Co Locking aperture for molded pulp container
US3501083A (en) * 1968-02-19 1970-03-17 Mobil Oil Corp Egg carton construction
JPS5026651Y1 (sv) * 1970-07-28 1975-08-08
EP0368672A1 (en) * 1988-11-10 1990-05-16 Autobar Group Limited Boxes or cartons for packaging eggs, fruits or other articles
CN102862748A (zh) * 2012-09-20 2013-01-09 浙江长诚包装建材有限公司 一种抗压纸浆模塑蛋盒

Citations (6)

* 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
US2529140A (en) * 1947-11-22 1950-11-07 Shellmar Products Corp Carton
FR1056924A (fr) * 1951-09-19 1954-03-03 Shellmar Products Corp Perfectionnements apportés aux emballages pour des oeufs
US2771233A (en) * 1950-06-21 1956-11-20 Diamond Match Co Molded pulp carton
US2872062A (en) * 1955-09-16 1959-02-03 Central Fibre Products Company Egg packing flats
US2873057A (en) * 1955-03-29 1959-02-10 Paper Maid Inc Container with cover lock

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2423756A (en) * 1943-12-17 1947-07-08 Merle P Chaplin Molded fibre article
US2587909A (en) * 1947-02-17 1952-03-04 Elizabeth M Sherman Molded pulp egg carton
US2578739A (en) * 1947-12-24 1951-12-18 Canal Nat Bank Of Portland Molded carton for fragile articles
US2739750A (en) * 1952-01-29 1956-03-27 Diamond Match Co Molded pulp egg carton
GB745420A (en) * 1952-05-24 1956-02-22 Diamond Match Co Improvements in or relating to a molded paper pulp carton
US2888183A (en) * 1957-02-27 1959-05-26 Diamond Gardner Corp Molded pulp egg carton and carton hinge construction

Patent Citations (6)

* 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
US2529140A (en) * 1947-11-22 1950-11-07 Shellmar Products Corp Carton
US2771233A (en) * 1950-06-21 1956-11-20 Diamond Match Co Molded pulp carton
FR1056924A (fr) * 1951-09-19 1954-03-03 Shellmar Products Corp Perfectionnements apportés aux emballages pour des oeufs
US2873057A (en) * 1955-03-29 1959-02-10 Paper Maid Inc Container with cover lock
US2872062A (en) * 1955-09-16 1959-02-03 Central Fibre Products Company Egg packing flats

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3207409A (en) * 1962-09-04 1965-09-21 Diamond Int Corp Molded pulp egg carton
US3215327A (en) * 1965-03-19 1965-11-02 Keyes Fibre Co Locking aperture for molded pulp container
US3501083A (en) * 1968-02-19 1970-03-17 Mobil Oil Corp Egg carton construction
JPS5026651Y1 (sv) * 1970-07-28 1975-08-08
EP0368672A1 (en) * 1988-11-10 1990-05-16 Autobar Group Limited Boxes or cartons for packaging eggs, fruits or other articles
CN102862748A (zh) * 2012-09-20 2013-01-09 浙江长诚包装建材有限公司 一种抗压纸浆模塑蛋盒

Also Published As

Publication number Publication date
FR1211008A (fr) 1960-03-11
CH363933A (de) 1962-08-15
DE1187990B (de) 1965-02-25
GB846199A (en) 1960-08-31
BE571359A (sv)
NL102222C (sv)

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