US3142432A - Shipping container with reusable closure flap - Google Patents

Shipping container with reusable closure flap Download PDF

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Publication number
US3142432A
US3142432A US21150062A US3142432A US 3142432 A US3142432 A US 3142432A US 21150062 A US21150062 A US 21150062A US 3142432 A US3142432 A US 3142432A
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Prior art keywords
wall panels
side wall
flaps
pair
top closure
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Expired - Lifetime
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Ralph M Davis
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Container Corp
Smurfit Kappa Packaging Corp
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Container Corp
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Priority to US21150062 priority Critical patent/US3142432A/en
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    • 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
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/02—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding or erecting a single blank to form a tubular body with or without subsequent folding operations, or the addition of separate elements, to close the ends of the body
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/80—Packaging reuse or recycling, e.g. of multilayer packaging

Definitions

  • This invention relates to paperboard shipping containers, and more particularly to a shipping container having a top closure arrangement which may be readily opened and reclosed as desired.
  • top closure flaps which are adhesively secured to each other in overlapped relationtom closure flaps 24 may be hingedly attached to the lower edges of end wall panels 12 along hinge lines 26.
  • the bottom closure flaps may be overlapped and secured to each other in a conventional manner when the container is erected.
  • the closure arrangement for the top of the container includes a pair of inner closure flaps 30 which may be ship in such a manner that the container may not be opened without destroying or at least damaging the original closure arrangement.
  • Another object of the invention is the provision, in a container of the type described, of an arrangement wherein only one of the inner top closure flaps is secured to the outer closure flaps, with other inner closure fiap being free for insertion under the secured closure flap.
  • a more specific object of the invention is the provision, in a container of the type described, wherein the outer closure, or retaining flaps, are cut from panels hinged to the side walls of the container so that the remaining portions of the panels may be folded into the carton to provide a two-ply construction for the side walls.
  • FIGURE 1 is a perspective view of a container embodying features of the invention, with one of the closure flaps shown in an open position;
  • FIGURE 2 is a longitudinal, vertical section taken on line 22 of FIGURE 1;
  • FIGURE 3 is a transverse, vertical section taken on line 3-3 of FIGURE 2;
  • FIGURE 4 is a plan view of the blank from which the container illustrated in other views may be formed.
  • FIGURE 1 may be formed from a unitary blank B illustrated in FIGURE 4.
  • the body of the container includes a pair of opposed outer side wall panels 10 and a pair of opposed end wall panels 12 hingedly attached at their opposite edges to the respective outer side wall panels along parallel hinge lines 14. Additionally an attaching flap 16 may be hinged to one of the outer side wall panels 10 along a hinge line 16 which is parallel to the hinge line 12 so as to provide a generally tubular structure, with the attaching flap 16 being secured to the end wall panel 12 at the opposite end of the blank in any desired manner, such as by gluing, stitching or the like.
  • a pair of side wall bottom closure flaps 20 may be hingedly attached to the lower edges of outer side wall panels 10 along hinge line 22, and a pair of end wall bothingedly attached to the upper edges of respective end wall panels12 along hinge lines 32.
  • Hingedly attached to the upper edges of respective outer side wall panels 10 along hinge lines 36 are a pair of opposed inner side wall panels 34 preferably formed from double score lines.
  • Hinge lines 32 and 36 are preferably formed by double score lines because of the thickness of the material normally used in this type of container, namely, corrugated or solid fibre paperboard.
  • outer top closure or retaining flaps 40 are also hinged to the upper edges of outer side wall panels 10 along the same hinge lines 36.
  • retaining flaps 40 are folded only to a horizontal position, as shown in FIGURE 1.
  • inner top closure flaps 30 are folded 90 downward into a horizontal position with the free end portion 46 of right hand closure flap 30 overlapping the free end portion 48 of left hand closure flap 30, as shown in FIGURE 2.
  • retaining flaps 40 may be folded downwardly 90 into a position where they overlie the uppermost top closure flap (right hand closure flap 30 as illustrated in FIGURE 2) and may be rigidly secured thereto in any desired manner, such as by means of the adhesive indicated at 50.
  • the lowermost or unsecured closure flap (left hand closure flap 30 as illustrated in FIGURE 2) may be withdrawn by pulling its free end portion 48 out from under the free end portion 46 of the other closure flap.
  • end portion 48 of the flap is merely reinserted under end portion 46 of the opposing closure flap. It is not absolutely necessary the end portions of flaps 30 overlap each other. They could be formed to meet centrally of the container top. In this arrangement (not shown) retaining flaps would cover the ends of both closure flaps, but would only be secured to one of them.
  • hinge lines 32 and 36 by double score lines really serves two purposes. First, it facilitate bending of the flaps, because of the thickness of the material employed; and second, it provides a slight additional amount of play in the unsecured closure flap to facilitate the withdrawal and reinsertion of the flap for opening and reclosing the container.
  • (11) means for rigidly securing said retaining flaps to opposite sides of the end portion of said one top closure flap;
  • an end portion of the other top closure flap being free from connection to said retaining flaps, so that it can be removably inserted under said retaining flaps.
  • an end portion of the other top closure flap being free from connection to said one top closure flap and said retaining flaps, so that it can be removably inserted under said retaining flaps.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cartons (AREA)

Description

y 8, 1964 R. M. DAVIS 3,142,432
SHIPPING CONTAINER WITH REUSABLE CLOSURE FLAP Filed July 23, 1962 auL 3,142,432 Patented July 28, 1964 3,142,432 SHIPPHJG CONTAINER WITH REUSABLE CLOSURE FLAP Ralph M. Davis, Fullerton, Calif., assignor to Container Corporation of America, Chicago, Ill., a corporation of Delaware Filed July 23, 1962, Ser. No. 211,500 Claims. Cl. 229-38) This invention relates to paperboard shipping containers, and more particularly to a shipping container having a top closure arrangement which may be readily opened and reclosed as desired.
As is well known in the art, most conventional shipping containers are provided with top closure flaps which are adhesively secured to each other in overlapped relationtom closure flaps 24 may be hingedly attached to the lower edges of end wall panels 12 along hinge lines 26. The bottom closure flaps may be overlapped and secured to each other in a conventional manner when the container is erected.
The closure arrangement for the top of the container includes a pair of inner closure flaps 30 which may be ship in such a manner that the container may not be opened without destroying or at least damaging the original closure arrangement.
In many instances, such as in the shipment of fruit, it is necessary or desirable to provide a means whereby a portion of the container may be opened to permit an examination of the contents.
It is therefore an object of this arrangement to provide a shipping container having a top closure flap which may be readily withdrawn and reinserted when it is desired to inspect the contents of the container.
Another object of the invention is the provision, in a container of the type described, of an arrangement wherein only one of the inner top closure flaps is secured to the outer closure flaps, with other inner closure fiap being free for insertion under the secured closure flap.
A more specific object of the invention is the provision, in a container of the type described, wherein the outer closure, or retaining flaps, are cut from panels hinged to the side walls of the container so that the remaining portions of the panels may be folded into the carton to provide a two-ply construction for the side walls.
These and other objects of the invention will be apparent from an examination of the following description and drawings, wherein:
FIGURE 1 is a perspective view of a container embodying features of the invention, with one of the closure flaps shown in an open position;
FIGURE 2 is a longitudinal, vertical section taken on line 22 of FIGURE 1;
FIGURE 3 is a transverse, vertical section taken on line 3-3 of FIGURE 2; and
FIGURE 4 is a plan view of the blank from which the container illustrated in other views may be formed.
It will be understood that, for purposes of clarity, certain elements have been intentionally omitted from certain views where they are illustrated to better advantage in other views.
Referring now to the drawing for a better understanding of the invention, it will be seen that the container illustrated in FIGURE 1 may be formed from a unitary blank B illustrated in FIGURE 4.
As best seen in FIGURE 4, the body of the container includes a pair of opposed outer side wall panels 10 and a pair of opposed end wall panels 12 hingedly attached at their opposite edges to the respective outer side wall panels along parallel hinge lines 14. Additionally an attaching flap 16 may be hinged to one of the outer side wall panels 10 along a hinge line 16 which is parallel to the hinge line 12 so as to provide a generally tubular structure, with the attaching flap 16 being secured to the end wall panel 12 at the opposite end of the blank in any desired manner, such as by gluing, stitching or the like.
A pair of side wall bottom closure flaps 20 may be hingedly attached to the lower edges of outer side wall panels 10 along hinge line 22, and a pair of end wall bothingedly attached to the upper edges of respective end wall panels12 along hinge lines 32. Hingedly attached to the upper edges of respective outer side wall panels 10 along hinge lines 36 are a pair of opposed inner side wall panels 34 preferably formed from double score lines. Hinge lines 32 and 36 are preferably formed by double score lines because of the thickness of the material normally used in this type of container, namely, corrugated or solid fibre paperboard.
Also hinged to the upper edges of outer side wall panels 10 along the same hinge lines 36 are a pair of outer top closure or retaining flaps 40, which may be cut out of the material of the inner side wall panels 34 as shown at 42. When inner side wall panels 34 are folded 180 down into the box in a vertical position in generally parallel relation with outer side wall panels 10, to provide a double ply construction for the side walls, retaining flaps 40 are folded only to a horizontal position, as shown in FIGURE 1.
In order to close the top of the container, inner top closure flaps 30 are folded 90 downward into a horizontal position with the free end portion 46 of right hand closure flap 30 overlapping the free end portion 48 of left hand closure flap 30, as shown in FIGURE 2.
After closure flaps 30 have been folded into horizontal, overlapped position, retaining flaps 40 may be folded downwardly 90 into a position where they overlie the uppermost top closure flap (right hand closure flap 30 as illustrated in FIGURE 2) and may be rigidly secured thereto in any desired manner, such as by means of the adhesive indicated at 50.
In this novel closure arrangement, the lowermost or unsecured closure flap (left hand closure flap 30 as illustrated in FIGURE 2) may be withdrawn by pulling its free end portion 48 out from under the free end portion 46 of the other closure flap. Thus, this arrangement will permit the examination of the contents of the container even after the top has been closed and sealed. In order to eifect reclosure, end portion 48 of the flap is merely reinserted under end portion 46 of the opposing closure flap. It is not absolutely necessary the end portions of flaps 30 overlap each other. They could be formed to meet centrally of the container top. In this arrangement (not shown) retaining flaps would cover the ends of both closure flaps, but would only be secured to one of them.
It will be understood that forming hinge lines 32 and 36 by double score lines really serves two purposes. First, it facilitate bending of the flaps, because of the thickness of the material employed; and second, it provides a slight additional amount of play in the unsecured closure flap to facilitate the withdrawal and reinsertion of the flap for opening and reclosing the container.
I claim:
1. A reclosable container formed from a unitary blank of foldable paperboard, comprising:
(a) a pair of opposed outer side wall panels;
(b) a pair of opposed end wall panels having opposite side edges hinged to respective outer side wall panels to define a tubular structure;
(0) bottom closure flaps hinged to lower edges of certain of said wall panels;
(at) a pair of opposed top closure flaps hinged to upper edges of said end wall panels and extending horizontally inward to close the top of the container;
(2) said top closure flaps having free end portions disposed in overlapped relation;
(1) a pair of inner side Wall panels operatively connected to upper portions of respective outer side wall panels and extending into the container in substantially parallel relation with respective outer side wall panels;
(g) a pair of retaining flaps cut from medial portions of respective inner side wall panels;
(It) said retaining flaps extending horizontally inward over the end portion of one of the top closure flaps; and
(i) means for rigidly securing said retaining flaps to opposite sides of the end portion of said one top closure fiap;
(j) the end portion of the other top closure flap being free from connection to said retaining flaps, so that it can be removably inserted under the corresponding end portion of said one top closure flap.
2. A reclosable container formed from a unitary blank of foldable paperboard, comprising:
(a) a pair of opposed outer side wall panels;
(b) a pair of opposed end wall panels having opposite side edges hinged to respective outer side wall panels to define a tubular structure;
(c) bottom closure flaps hinged to lower edges of certain of said wall panels;
(d) a pair of opposed top closure flaps hinged to upper edges of said end wall panels and extending horizontally inward to close the top of the container;
(2) a pair of inner side wall panels operatively connected to upper portions of respective outer side wall panels and extending into the container in substantially parallel relation with respective outer side wall panels;
(1) a pair of retaining flaps cut from medial portions of respective inner side wall panels;
(g) said retaining flaps extending horizontally inward over an end portion of one of the top closure flaps; and
(11) means for rigidly securing said retaining flaps to opposite sides of the end portion of said one top closure flap;
(i) an end portion of the other top closure flap being free from connection to said retaining flaps, so that it can be removably inserted under said retaining flaps.
3. A reclosable container formed from a unitary blank of foldable paperboard, comprising:
(a) a pair of opposed outer side wall panels;
(b) a pair of opposed end wall panels having opposite side edges hinged to respective outer side Wall panels to define a tubular structure;
() a pair of opposed top closure flaps hinged to upper edges of said end wall panels and extending horizontally inward to close the top of the container;
(d) a pair of inner side wall panels operatively connected to upper portions of respective outer side wall panels and extending into the container in substantially parallel relation with respective outer side wall panels;
(e) a pair of retaining flaps cut from medial portions of respective inner sidewall panels;
(f) said retaining flaps extending horizontally inward over an end portion of one of the top closure flaps; and
(g) means for rigidly securing said retaining flaps to opposite sides of the end portion of said one top closure flap;
(h) an end portion of the other top closure flap being free from connection to said retaining flaps, so that it can be removably inserted under said retaining flaps.
4. A reclosable container formed from a unitary blank of foldable paperboard, comprising:
(a) a pair of opposed side wall panels;
(b) a pair of opposed end wall panels having opposite side edges hinged to respective side wall panels to define a tubular structure;
(0) a pair of opposed top closure flaps hinged to upper edges of said end wall panels and extending horizontally inward to close the top of the container;
((1) said top closure flaps having free end portions disposed in overlapped relation;
(e) a pair of retaining flaps hinged to upper edges of medial portions of respective side wall panels;
(f) said retaining flaps extending horizontally inward over the end portion of one of the top closure flaps; and
(g) said retaining flaps having portions adhesively secured to opposite sides of the end portion of said one top closure flap;
(h) the end portion of the other top closure flap being free from connection to said one top closure flap and said retaining flaps, so that it can be removably inserted under the corresponding end portion of said one top closure flap.
5. A reclosable container formed from a unitary blank of foldable paperboard, comprising:
(a) a pair of opposed side wall panels;
(b) a pair of opposed end wall panels having opposite side edges hinged to respective side wall panels to define a tubular structure;
(0) a pair of opposed top closure flaps hinged to upper edges of caid end wall panels and extending horizontally inward to close the top of the container;
(d) a pair of retaining flaps hinged to upper edges of medial portions of respective side wall panels;
(e) said retaining flaps extending horizontally inward over an end portion of one of the top closure flaps; and
(f) said retaining flaps having portions rigidly secured to opposite sides of the end portion of said one top closure flap;
(g) an end portion of the other top closure flap being free from connection to said one top closure flap and said retaining flaps, so that it can be removably inserted under said retaining flaps.
References Cited in the file of this patent UNITED STATES PATENTS 325,757 Merrill Sept. 8, 1885 937,173 Pfeitfer Oct. 19, 1909 2,205,068 Potter June 18, 1940 2,712,894 Paxton July 12, 1955

Claims (1)

1. A RECLOSABLE CONTAINER FORMED FROM A UNITARY BLANK OF FOLDABLE PAPERBOARD, COMPRISING: (A) A PAIR OF OPPOSED OUTER SIDE WALL PANELS; (B) A PAIR OF OPPOSED END WALL PANELS HAVING OPPOSITE SIDE EDGES HINGED TO RESPECTIVE OUTER SIDE WALL PANELS TO DEFINE A TUBULAR STRUCTURE; (C) BOTTOM CLOSURE FLAPS HINGED TO LOWER EDGES OF CERTAIN OF SAID WALL PANELS; (D) A PAIR OF OPPOSED TOP CLOSURE FLAPS HINGED TO UPPER EDGES OF SAID END WALL PANELS AND EXTENDING HORIZONTALLY INWARD TO CLOSE THE TOP OF THE CONTAINER; (E) SAID TOP CLOSURE FLAPS HAVING FREE END PORTIONS DISPOSED IN OVERLAPPED RELATION; (F) A PAIR OF INNER SIDE WALL PANELS OPERATIVELY CONNECTED TO UPPER PORTIONS OF RESPECTIVE OUTER SIDE WALL PANELS AND EXTENDING INTO CONTAINER IN SUBSTANTIALLY PARALLEL RELATION WITH RESPECTIVE OUTER SIDE WALL PANELS; (G) A PAIR OF RETAINING FLAPS CUT FROM MEDIAL PORTIONS OF RESPECTIVE INNER SIDE WALL PANELS; (H) SAID RETAINING FLAPS EXTENDING HORIZONTALLY INWARD OVER THE END PORTION OF ONE OF THE TOP CLOSURE FLAPS; AND (I) MEANS FOR RIGIDLY SECURING SAID RETAINING FLAPS TO OPPOSITE SIDES OF THE END PORTION OF SAID ONE TOP CLOSURE FLAP; (J) THE END PORTION OF THE OTHER TOP CLOSURE FLAP BEING FREE FROM CONNECTION TO SAID RETAINING FLAPS, SO THAT IT CAN BE REMOVABLY INSERTED UNDER THE CORRESPONDING END PORTION OF SAID ONE TOP CLOSURE FLAP.
US21150062 1962-07-23 1962-07-23 Shipping container with reusable closure flap Expired - Lifetime US3142432A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3176904A (en) * 1963-10-22 1965-04-06 Container Corp Carton with tear strip closure
US5083667A (en) * 1989-10-31 1992-01-28 Kraft General Foods, Inc. Easy-open, reclosable article case
US20120074159A1 (en) * 2010-09-23 2012-03-29 Amy Johnson Krasucki Reclosable pour systems for containers

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US325757A (en) * 1885-09-08 merrill
US937173A (en) * 1909-07-19 1909-10-19 Pfeiffer Chemical Company Carton or box.
US2205068A (en) * 1938-05-14 1940-06-18 Fels & Company Carton
US2712894A (en) * 1954-08-16 1955-07-12 Gen Nailing Mach Shipping box

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US325757A (en) * 1885-09-08 merrill
US937173A (en) * 1909-07-19 1909-10-19 Pfeiffer Chemical Company Carton or box.
US2205068A (en) * 1938-05-14 1940-06-18 Fels & Company Carton
US2712894A (en) * 1954-08-16 1955-07-12 Gen Nailing Mach Shipping box

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3176904A (en) * 1963-10-22 1965-04-06 Container Corp Carton with tear strip closure
US5083667A (en) * 1989-10-31 1992-01-28 Kraft General Foods, Inc. Easy-open, reclosable article case
US20120074159A1 (en) * 2010-09-23 2012-03-29 Amy Johnson Krasucki Reclosable pour systems for containers
US8622240B2 (en) * 2010-09-23 2014-01-07 Nestec S.A. Reclosable pour systems for containers

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