US3471076A - Container closure construction - Google Patents

Container closure construction Download PDF

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Publication number
US3471076A
US3471076A US675956A US3471076DA US3471076A US 3471076 A US3471076 A US 3471076A US 675956 A US675956 A US 675956A US 3471076D A US3471076D A US 3471076DA US 3471076 A US3471076 A US 3471076A
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US
United States
Prior art keywords
container
panels
closure
tufts
rib
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
US675956A
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English (en)
Inventor
Duncan James Crawford
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.)
ELOTRADE AG A SWISS CORP
Original Assignee
Ex-Cell-O Corp
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Assigned to ELOTRADE A.G., A SWISS CORP. reassignment ELOTRADE A.G., A SWISS CORP. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: EX-CELL-O CORPORATION, A DE CORP.
Assigned to EX-CELL-O CORPORATION, A CORP. OF DE reassignment EX-CELL-O CORPORATION, A CORP. OF DE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: EX-CELL-O CORPORATION, A MI CORP
Expired - Lifetime legal-status Critical Current

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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
    • B65D5/06—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 with end-closing or contents-supporting elements formed by folding inwardly a wall extending from, and continuously around, an end of the tubular body
    • B65D5/067—Gable-top containers

Definitions

  • the present invention relates to packaging and more specifically to a container closure construction.
  • the invention finds particular, but not exclusive, utility in disposable containers adapted for fluid packaging, milk, orange juice, concentrated syrups and other products.
  • the container having a sealed closure of the type referred to in the above patent was designed for use in packaging fluids, such as concentrated syrups, milk, and other dairy and food products.
  • packaging fluids such as concentrated syrups, milk, and other dairy and food products.
  • the sealed top closure of the type disclosed in the Patent 3,334,799 have been commercially successful, they do possess critical areas for the developing of incipient fluid escape channels. It has been discovered that with the increase in size of the container, such as the gallon container, the difliculty in sealing the escape channels is due to the heavier caliper paperboard. The increased amount of material in the larger size containers makes the control of the folding and sealing operation more diflicult with the increased possibility of resulting fluid escape channels.
  • a further object of the present invention is to provide 7 an improved sealed container closure for all sized plastic coated paperboard container which can be heat sealed over a pair of continuous oflset parallel surfaces to eliminate incipient fluid escape channels, while eliminating the problem of effecting a continuous seal at their transition area, yet can be easily released while leaving the pouring lip area in a serviceable condition.
  • FIG. 1 shows an illustrative container having the pouring spout inclosed to which the present invention has been applied;
  • FIG. 2 illustrates a container of the type shown in FIG. 1 with the pouring spout opened and the pouring lip in position for dispensing the container contents;
  • FIG. 3 is a cross-section view through the container rib and the upper portion of the pouring spout structure shown in FIG. 1;
  • FIG. 4 is a cross-section view through the container rib and the upper portion of the pouring spout structure shown in FIG. 1;
  • FIG. 5 is a layout view of an inside surface of a container blank, with the side panels broken away, showing the inventive structure.
  • FIG. 1 there is shown an illustrative container C, of the character set forth above and formed of plastic coated paperboard.
  • the container comprises a tubular body 20 of generally rectangular cross-section, having a flat bottom closure 21 and a top closure 22, which will be recognized as the familiar gable top closure characterized by inclined roof panels 24, 25, surmounted by an upstanding central sealing rib or truss 26.
  • the container body 20 is shown in FIG. 5 as the inside surface of a flat blank having a pattern of appropriate score lines.
  • the container is separated into three groups by staggered score lines 11 and 12.
  • the area above score line 11 as seen in FIG. 1 is the top closure 22, a discussion of which is not necessary for the disclosure of the present invention; however, a complete disclosure is given in Patent No. 3,185,376, issued May 25, 1965, and assigned to the assignees of the present application.
  • the area between score lines 11 and 12 as seen in FIG. 5 is the container body 20 and comprises four panels 13 through 16 and side seam flap 38.
  • the container body 20 is defined on the sides by cut edges 18 and 19.
  • the panels 13 through 16 and side seam flap 38 are separated by score lines 56 through 59.
  • the area below score line 12 as seen in FIG. 5 is the bottom closure 21, a complete discussion of which is not necessary to the disclosure of the present invention; however, a complete disclosure is given in Patent No. 3,120,333, issued Feb. 4, 1964, and assigned to the assigne
  • the bottom closure group below score line 12 is made up of major bottom flaps 43 and 44 and minor bottom flaps 45 and 46.
  • the minor bottom flaps 45 and 46 are flanked by fold-back members 52-53 and 54-55, respectively.
  • the top closure group is made up of roof panels 24 and 25 and triangular end panels 31 and 32. End panels 31 and 32 are flanked by triangular fold-back panels 34-35 and 36-37, respectively. The panels extend between roof panels 24, 25 and triangular end panels 31, 32 upon construction as viewed in FIG. 1.
  • the paperboard from which the container is formed is preferably a laminated blank of the type disclosed in US. Patent 3,239,126, issued Mar. 8, 1966, and assigned to the assignees of the present application.
  • the gable top closure is formed by the inclined roof panels 24, 25 each of which is surmounted by an outer rib panel 29, 30 together with a pair of in-turned triangular end panels 31, 32 each joined to the adjacent roof panels 24, 25 by triangular fold-back panels 34, 35 and 36, 37, respectively.
  • a side seam flap 38 is provided at one edge of the blank for the container C, for joinder with roof panel 24 and its associated side and bottom panels 13 and 43, to complete the body of the container.
  • each of the triangular foldback panels 34, 35, 36, 37 includes adjacent its upper edge a corresponding one of inner rib panels 39, 40, 41, 42.
  • FIGURE illustrates a layout of the inside surface of a blank adapted to be erected into the completed container and closure of FIGURE 1.
  • the container blank is opened up into a tubular form with the major bottom flaps 43 and 44 moving toward each other. Also, the minor bottom flaps 45 and 46 are moved toward each other.
  • This causes bottom fold-back member 55 to rotate around score line 59 so that the inside surfaces of member 55 and fiap-43 are coming together.
  • fold-back member 55 is rotating so that the outside surfaces of fold-back member 55 and flap 46 are coming together.
  • Fold-back members 52, 53, and 54 make the same movements as member 55 with panels 4345, 4445 and 44-46, respectively.
  • Bottom closure major flap 43 moves toward bottom closure major flap 44 just enough faster than flap 44 moves toward flap 43 so that tuck-in member 48 is positioned between fold-back member 53 and 54 and major bottom flap 44.
  • a completed top closure 22 of the type shown in FIGURE 1 the rib panels are all laminated together, with the inner rib panels 39, 40, 41, 42 folded between the outer rib panels 29, 30 on the inclined roof panels.
  • heat is applied to the thermoplastic coating on the various rib panels just before the container is closed, after which a sealing pressure is applied to the sealing rib or truss 29, 30 thus formed by the various rib panel so that the hot plastic on contacting the rib surface fuses to form a liquid tight sanitary seal.
  • a suitable opening or spout is accessibly provided as a part of the closure.
  • one end of the closure is adapted to be pulled out to form an extended pouring spout as shown in FIGURE 2.
  • the steps of opening the spout are well known and are shown and described in U.S. Patent 3,116,002, issued Dec. 31, 1963.
  • the abhesive layer 70 is printed or otherwise applied on each of the inner rib panels 39, 40.
  • abhesive layers 71 and 72 are printed or otherwise applied on outer rib panels 29, 30 and located up to center line of the score lines 81, 82 of panels 13, 15, respectively.
  • the abhesive layers 71, 70 and 72 likewise extend downwardly and somewhat below the transverse score lines 83, 84 and 85, respectively.
  • the abhesive layer 70 on each of the inner rib panels 39, 40 terminate short of the outer end thereof, as disclosed in issued Patent 3,116,002, leaving at the outer end of each such rib panel the sealing areas 23 of untreated material on the surface of the blank.
  • tufts 66, 67 are located on the pouring lip edge 49 adjacent the vertical fold lines 56, 57 of the container blank. It will be noted that tufts 66, 67, which are formed as integral continuations of the sheet material, are spaced equidistant from the scores 56, 57 such that upon formation of the container they will be positioned in opposed relation near the outer extremity of rib 26. It can be seen from FIGS.
  • the height of tufts 66, 67 are sufiicient such that upon the formation of heat seal 68 the tufts will be crowded together under substantial compression in both a vertical and horizontal direction to completely block channel 65.
  • the length tufts 66, 67 is limited to a distance in the order of one twentieth the total length of the associated pouring lip edge 49. This is to prevent the accumulation of too great an amount of blocking material within channel 58 such that the folding and sealing operation of the container packaging machines is disrupted.
  • tufts 92, 73 located on inner rib panel 42 of triangular fold-back panel 37, and tufts 74, 75 located on inner rib panel 41 of triangular foldback panel 36 completely close off the channel to the passage of liquid in the outer rib panels 29, 30 opposite the pouring lip side when the carton is formed.
  • the tuft 77 along the upper end of cut edge 19 of side seam flap 38 also prevents the passage of liquid in the upper gable portion when the side seam flap 38 is joined to outer rib panel 29 of the roof panel 24.
  • FIGURE 4 shows the inner surfaces of panel 39, 40 provided with a pressure heat-seal 69 located in the vertical plane of pressure heat-seal 68.
  • US. Patents 3,116,002, issued Dec. 31, 1963; 3,270,940, issued Sept. 6, 1966; and 3,334,799, issued Aug. 8, 1967, and assigned to the assignees of the present application shows portions of rib panels, corresponding to rib panels 39, 40 of this disclosure provided with a coating of abhesive material to prevent the bonding of the juxtaposed surfaces 70 and 71, 72 of panels 39-40, 29 and 30, respectively, as shown in cross-section view of FIGURE 3.
  • a dispensing container having a tubular body surmounted by a top sealed closure sanitarily housing a pouring lip, said closure and lip being formed of sheet material having a heat sealable thermoplastic surface comprising, in combination:
  • said first and second tufts are symmetrically located above their associated juxtaposed seal areas wherein said tufts are crowded together upon pressure heat sealing of said closure, and
  • said first and second tufts are triangular in form.
  • a dispensing container having a tubular body surmounted by a top sealed closure sanitarily housing a pouring lip, said closure and lip being formed of sheet material having a heat sealable thermoplastic surface with an adhesive coating applied on said pouring lip comprising, in combination:
  • tubular body being rectangular in cross-section
  • said third and fourth tufts filling a cross-section of said fluid channel.
  • said first and second outer rib panels are coplanar with said pouring lip inner rib panels and said first and second sealing inner rib panels,
  • said first and second outer rib panels extend above said inner rib panels and said first and second sealing inner rib panels and are higher than said tufts.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cartons (AREA)
  • Closing Of Containers (AREA)
US675956A 1967-10-17 1967-10-17 Container closure construction Expired - Lifetime US3471076A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US67595667A 1967-10-17 1967-10-17

Publications (1)

Publication Number Publication Date
US3471076A true US3471076A (en) 1969-10-07

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US675956A Expired - Lifetime US3471076A (en) 1967-10-17 1967-10-17 Container closure construction

Country Status (7)

Country Link
US (1) US3471076A (de)
BE (1) BE722448A (de)
CH (1) CH475131A (de)
DE (1) DE1800914A1 (de)
FR (1) FR1586332A (de)
GB (1) GB1215963A (de)
NL (1) NL6814230A (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE29074E (en) * 1971-01-25 1976-12-14 Phillips Petroleum Company Gable topped container and paperboard blank
US4206867A (en) * 1978-12-21 1980-06-10 Ex-Cell-O Corporation Container and blank for constructing same
US4518377A (en) * 1981-05-11 1985-05-21 Elopak Limited Method of making a carton
US4946041A (en) * 1988-03-11 1990-08-07 Fbi Brands Ltd. Easy opening gable top carton
US5083702A (en) * 1990-03-22 1992-01-28 Minnesota Mining And Manufacturing Company Gable-top container and method and apparatus for construction thereof
US5176308A (en) * 1992-06-12 1993-01-05 Westvaco Corporation Closure for gable top container
US5242701A (en) * 1988-10-24 1993-09-07 Fbi Brands Ltd. Method for shelf stable packaging of liquid food in hermetically sealed easy-to-open gable top cartons
US20110303739A1 (en) * 2008-12-18 2011-12-15 Elopak Systems Ag Apparatus and method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2526756B1 (fr) * 1982-05-17 1986-01-10 Elopak France Procede pour rendre etanches des emballages constitues par un complexe stratifie
ATE52981T1 (de) * 1985-04-09 1990-06-15 Ex Cell O Corp Fluessigkeitsbehaelter mit flachem oberende.

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3189246A (en) * 1961-07-25 1965-06-15 Jr Seaver A Seline Gable top container
US3334799A (en) * 1966-08-19 1967-08-08 Ex Cell O Corp Container top closure construction

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3189246A (en) * 1961-07-25 1965-06-15 Jr Seaver A Seline Gable top container
US3334799A (en) * 1966-08-19 1967-08-08 Ex Cell O Corp Container top closure construction

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE29074E (en) * 1971-01-25 1976-12-14 Phillips Petroleum Company Gable topped container and paperboard blank
US4206867A (en) * 1978-12-21 1980-06-10 Ex-Cell-O Corporation Container and blank for constructing same
US4518377A (en) * 1981-05-11 1985-05-21 Elopak Limited Method of making a carton
US4946041A (en) * 1988-03-11 1990-08-07 Fbi Brands Ltd. Easy opening gable top carton
US5421512A (en) * 1988-03-11 1995-06-06 Fbi Brands Ltd. System for packaging perishable liquids in gable top cartons
US5242701A (en) * 1988-10-24 1993-09-07 Fbi Brands Ltd. Method for shelf stable packaging of liquid food in hermetically sealed easy-to-open gable top cartons
US5083702A (en) * 1990-03-22 1992-01-28 Minnesota Mining And Manufacturing Company Gable-top container and method and apparatus for construction thereof
US5176308A (en) * 1992-06-12 1993-01-05 Westvaco Corporation Closure for gable top container
US20110303739A1 (en) * 2008-12-18 2011-12-15 Elopak Systems Ag Apparatus and method
US9452859B2 (en) * 2008-12-18 2016-09-27 Elopak Systems Ag Apparatus and method
US10472125B2 (en) 2008-12-18 2019-11-12 Elopak Systems Ag Relating to packaging

Also Published As

Publication number Publication date
GB1215963A (en) 1970-12-16
DE1800914A1 (de) 1969-05-29
BE722448A (de) 1969-04-01
NL6814230A (de) 1969-04-21
CH475131A (de) 1969-07-15
FR1586332A (de) 1970-02-13

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Legal Events

Date Code Title Description
AS Assignment

Owner name: EX-CELL-O CORPORATION, A CORP. OF DE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:EX-CELL-O CORPORATION, A MI CORP;REEL/FRAME:004721/0183

Effective date: 19870323

Owner name: ELOTRADE A.G., A SWISS CORP.

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:EX-CELL-O CORPORATION, A DE CORP.;REEL/FRAME:004767/0750

Effective date: 19870331