US3291369A - Means for scoring containers - Google Patents

Means for scoring containers Download PDF

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Publication number
US3291369A
US3291369A US464654A US46465465A US3291369A US 3291369 A US3291369 A US 3291369A US 464654 A US464654 A US 464654A US 46465465 A US46465465 A US 46465465A US 3291369 A US3291369 A US 3291369A
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United States
Prior art keywords
panels
side seam
score line
container
blank
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
US464654A
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English (en)
Inventor
Duncan J 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.)
Ex-Cell-O Corp
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Ex-Cell-O Corp
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Filing date
Publication date
Application filed by Ex-Cell-O Corp filed Critical Ex-Cell-O Corp
Priority to US464654A priority Critical patent/US3291369A/en
Priority to NO162882A priority patent/NO118539B/no
Priority to SE08185/66A priority patent/SE334122B/xx
Application granted granted Critical
Publication of US3291369A publication Critical patent/US3291369A/en
Anticipated expiration legal-status Critical
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

  • This invention relates generally to thermoplastic-coated paperboard containers, and more particulraly to an improved thermoplastic-coated paperboard container side seam and method of sealing through the use of lines widened to facilitate both liquid-tight sealin g and machine forming of the containers bottom and top closures.
  • Coated paperboard containers have been widely used for packaging milk and other food products. These containers are cut from large sheets of paperboard into singlepiece blanks and impressed with score lines into a plurality of panels.
  • a flat side-seamed blank is formed. This is accomplished by means of a side seam flap whose outside surface contacts the inside surface of the end panel. These surfaces are heated to activate their coating if coated with a heat scalable material, or glue material may be applied to these surfces so that they will be bonded together.
  • the mating score lines on these surfaces have made it difiicult to attain an effective liquid-proof seal.
  • Present practice is to fade-out the score lines on the side seam by making them increasingly shallower as they approach the outside edge of the flap. This has improved the side seam sealing but has created a problem in the machine folding operation which requires standard depth scoring on the side seam flap for effective operation. Accordingly, it is an important object of the present invention to provide an im proved coated paperboard container which can be readily folded by machines.
  • Another object is to provide a paperboard container with an oversize wide score for receiving the rib portion of a standard score so arranged with an excess of clearance that when the overlying scores are subjected to pressure sealing means, a liquid-tight seal is attained.
  • FIGURE 1 is a lay-out view of a thermoplastic-coated paperboard blank from which a container of the present invention is formed, and showing the inside surface thereof;
  • FIGURE 2 is a fragmentary perspective view of a container made in accordance with the invention, and showing the upper end of the container top closure structure in fully open position.
  • FIGURE 3 is a fragmentary inside surface view of a flat side seam blank made from the container blank.
  • FIGURE 4 is a fragmentary perspective view of the lower end of a container made in accordance with the invention and showing the bottom closure structure in fully open position.
  • FIGURE 5 is an enlarged cross-sectional view taken on line 55 of FIGURE 3, the position of the elements shown corresponding to the overlying scores prior to pressure sealing.
  • FIGURE 5A shows the scores according to FIGURE 5 after the pressure sealing of the side seam.
  • FIGURE 6 is an enlarged cross-sectional view taken on 66 of FIGURE 1 and showing a representative standard score and wide score.
  • the numeral 11 generally indicates a paperboard container made in accordance with the principle of the present invention.
  • the container described in this application is made from paperboard having a thermoplastic coating thereon, but it should be understood that other suitable coatings and adhesives may be employed as a coating and side seam sealer for the container.
  • the container 10 is shown in fiat blank with a pattern of appropriate score lines and having the inside surface of the blank showing.
  • the container blank is separated into three vertically disposed groups of panels by the score lines 11 and 12.
  • the material above the score line 11 is termed the top closure
  • the material between the score lines I1 and 12 is termed the body panel group
  • the material below the score line 12 is termed the bottom closure panel groups.
  • the body panel group comprises the four panels indicated by the numerals 13, I4, 15 and 16, and the side seam flap 17.
  • the container blank is defined on the sides by the edges 18 and 19.
  • the body panels 13 through 16 are separated by the score lines 26 through 29.
  • the top closure contains the end panels 20 and 21 and the roof panels 22 and 23.
  • the end panel 243 is connected to the fold-back panels 30 and 31 at the score lines 4-1 and 42 respectively.
  • the end panel 21 is connected to the fold-back panels 32 and 33 at the score lines 43 and 44, respectively.
  • the inner rib panels 35 and 36 are connected at the score line 39.
  • the fold-back panels 32 and 33 are connected to the inner rib panels 37 and 38, respectively, at the score line 34.
  • the inner rib panels 37 and 38 are connected at the score line 40.
  • the roof panels 22 and 23 are attached to the outer rib panels 45 and 46, respectively, at the score line 34.
  • the outer rib panels 45 and 46 are provided with the sealing flaps 47 and 38, respectively.
  • the roof panels 22 and 23 include the pouring spout flap portions 51 and 52 which are formed by the score lines 49 and 50, respectively.
  • the bottom closure panel group comprises the panels 55 through 58.
  • the bottom closure panels 55 and 57 are substantially square in plan configuration.
  • the bottom closure panels 56 and 58 are substantially triangular in plan configuration.
  • the bottom closure panel 55 is provided with an extended tuck-in flap 5%, and the bottom closure panel 57 is provided with an extended tuck-out or tuck-over flap 6'9.
  • the bottom closure panel 56 is connected to the adjacently disposed triangular fold-back panels 61 and 62 at the score lines 65 and 66, respectively.
  • the bottom closure panel 58 is connected to the adj acently disposed triangular fold-back panels 63 and 64 at the score lines 67 and 68.
  • Side seam flap extensions 70, '71, '72 and 73 are used to form the blank in a flat tube in a manner to be described;
  • the score lines are compression formed by depressing the blank toward that surface which is to become the inside face of the container.
  • the method for accomplishing this is by means of complimentary compression dies which have projecting male rules on a first block and matching female grooves in a second block. The result is that the scores are formed in the blank to a depth sufficient to provide a rib opposite the score within the erected container.
  • the wide score 34a which is representative of the other wide scores, 11a, 12a and 41a on the side seam fiap 17 is formed having a groove 74 Whose width W is more than double the Width Y of the standard score groove indicated at 75.
  • both grooves 74 and 75 have a p-lanarbase portion because the impressed male rules used in the dies have a substantially rectangular cross section.
  • the grooves 74 and 75 have equal depths as shown by the measurement D. The depth D must be controlled to ensure a minimal score indentation that will prevent rupturing of the thermoplastic coating during the compression die operation and yet provide satisfactory machine folding for container and closure formation.
  • the groove portions 74 and 75 of the scores are well defined as to their widths W and Y and uniform in their depth D, it is not possible to maintain a uniform configuration of their rib surfaces, indicated by the numerals 76 and 77.
  • the scores are held to a controlled tolerance as to widths X and Z by the vertical walls of the female compression dies, but are allowed to assume an irregular convex shape over the surfaces 76 and 77. This freedom to move in a vertical direction is necessary to prevent damage to the thermoplastic coating of the paperboard.
  • the blank is transformed into a flat side seamed blank as partially illustrated in FIG. 3 by folding the panel 16 and its side seam fiap 17 about score line 28 until they contact the panels 15 and 14 respectively.
  • the panel 13 is folded about scoreline 26 until it contacts the inside surface of panel 14 and the outside surface of side seam flap. 17.
  • the surface along edge 18, which will meet the outside face of the side seam flap, will be heated to activate its coating and the outside surface of the side seam flap will be heated to activate its coating so that when the two surfaces meet they will be bonded together upon cooling. Pressure is applied to secure the best possible bond.
  • the edge 18 and the score line 29 now appear as one line.
  • the panels 14 and 15 of the side seam blank of FIG. 3 have been removed to show the overlying relation between the scores 11, 12, 34 and 41 adjacent edge 18 and the wide scores 11A, 12A, 34A and 41A of flap 17.
  • the container blank as shown in FIG. 3 is in the form in which it will be fabricated on packaging machines.
  • the convex rib configuration 76 of standard score 11 is received within the wide score 11a. It will be noted that applicant has provided a clearance, indicated at numerals 78 and 80 and sufficient to allow the mating scores to conform to one another during the pressure sealing operation. The result is a liquid-tight seal that eliminates the formation of leakage channels, as shown in FIG. A.
  • the ratio between the wide score width W and the standard score rib width Z is not critical in any narrow sense, it will be appreciated that a width W providing only a narrow clearance for rib 11 will result in the lack of space for the rib material within groove 74 upon pressure sealing with resultant channeling, while too great a width will result in an improper score for folding together with the formation of channels within the groove. For practical purposes, satisfactory results may be obtained with the wide scores having a width W in excess of the rib width Z by about one-half the gauge thickness T of the paperboard material.
  • the blank of FIG. 1 can be side seamed to form a flat tube providing a liquid-tight seal.
  • the flattened blank can then be erected into a tube and the bottom and top closure completed by being folded about the scores 11, 12, 34 and 41 and their respective mating wide scores 11A, 12A, 34A and 41A.
  • flap 17, by means of wide scores having a standard depth throughout applicant has enhanced the container folding operation, eliminating objectionable fading of the score lines formerly required to attain a fluid-tight seal.
  • said wide score line indented ina common direction with said horizontal score line and having a groove width at least twice the groove width of said horizontal score line.
  • said side seam having wide score lines positioned wherein the groove portions of said wide score lines mate with the overlying rib portions of said horizontal score lines to form a liquid-tight juncture.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Handcart (AREA)
  • Cartons (AREA)
US464654A 1965-06-17 1965-06-17 Means for scoring containers Expired - Lifetime US3291369A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US464654A US3291369A (en) 1965-06-17 1965-06-17 Means for scoring containers
NO162882A NO118539B (enrdf_load_stackoverflow) 1965-06-17 1966-05-05
SE08185/66A SE334122B (enrdf_load_stackoverflow) 1965-06-17 1966-06-15

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US464654A US3291369A (en) 1965-06-17 1965-06-17 Means for scoring containers

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US3291369A true US3291369A (en) 1966-12-13

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US (1) US3291369A (enrdf_load_stackoverflow)
NO (1) NO118539B (enrdf_load_stackoverflow)
SE (1) SE334122B (enrdf_load_stackoverflow)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3498524A (en) * 1968-03-11 1970-03-03 Ex Cell O Corp Container bottom closing
US3523635A (en) * 1968-05-02 1970-08-11 Corrugated Container Co Fiberboard box having strengthened bottom structure and connector corner joint
US3746243A (en) * 1972-01-24 1973-07-17 Rexham Corp Seals for drumhead cartons
US3746244A (en) * 1971-12-29 1973-07-17 Bergstein Packaging Trust Sift-proof carton construction
US3762625A (en) * 1970-01-15 1973-10-02 Mojonnier Inc Albert Plastic seamless gable top container
WO1981001127A1 (en) * 1979-10-17 1981-04-30 Ex Cell O Corp Container with foldable gable top,and blank for constructing same
US4332345A (en) * 1980-03-20 1982-06-01 Ex-Cell-O Corporation Container with infolded bottom closure
US4341340A (en) * 1980-09-16 1982-07-27 Ex-Cell-O Corporation Container with infolded bottom closure
US4518377A (en) * 1981-05-11 1985-05-21 Elopak Limited Method of making a carton
US5083702A (en) * 1990-03-22 1992-01-28 Minnesota Mining And Manufacturing Company Gable-top container and method and apparatus for construction thereof
US20110089227A1 (en) * 2009-09-25 2011-04-21 Multi Packaging Solutions, Inc. Foldable Packaging Container
USD675107S1 (en) 2012-07-20 2013-01-29 Multi Packaging Solutions, Inc. Wrap packaging
USD676337S1 (en) 2012-07-20 2013-02-19 Multi Packaging Solutions, Inc. Wrap packaging
US8550331B2 (en) 2011-05-20 2013-10-08 Multi Packaging Solutions, Inc. Foldable container and attachments
US20130264380A1 (en) * 2012-04-05 2013-10-10 Luke Dolby Sealable carton for liquid-based materials
US9403618B2 (en) 2012-04-05 2016-08-02 Leisurepak Inc. Sealable carton with handle
US9676511B2 (en) 2009-09-25 2017-06-13 Multi Packaging Solutions, Inc. Foldable packaging container

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2322654A (en) * 1937-11-30 1943-06-22 Humoco Corp Container
US2362862A (en) * 1942-07-15 1944-11-14 Harlow M Russell Paper container for fluid
US3120335A (en) * 1961-09-07 1964-02-04 Ex Cell O Corp Container with infolded bottom closure

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2322654A (en) * 1937-11-30 1943-06-22 Humoco Corp Container
US2362862A (en) * 1942-07-15 1944-11-14 Harlow M Russell Paper container for fluid
US3120335A (en) * 1961-09-07 1964-02-04 Ex Cell O Corp Container with infolded bottom closure

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3498524A (en) * 1968-03-11 1970-03-03 Ex Cell O Corp Container bottom closing
US3523635A (en) * 1968-05-02 1970-08-11 Corrugated Container Co Fiberboard box having strengthened bottom structure and connector corner joint
US3762625A (en) * 1970-01-15 1973-10-02 Mojonnier Inc Albert Plastic seamless gable top container
US3746244A (en) * 1971-12-29 1973-07-17 Bergstein Packaging Trust Sift-proof carton construction
US3746243A (en) * 1972-01-24 1973-07-17 Rexham Corp Seals for drumhead cartons
WO1981001127A1 (en) * 1979-10-17 1981-04-30 Ex Cell O Corp Container with foldable gable top,and blank for constructing same
US4281787A (en) * 1979-10-17 1981-08-04 Ex-Cell-O Corporation Container and blank for constructing same
US4332345A (en) * 1980-03-20 1982-06-01 Ex-Cell-O Corporation Container with infolded bottom closure
US4341340A (en) * 1980-09-16 1982-07-27 Ex-Cell-O Corporation Container with infolded bottom closure
US4518377A (en) * 1981-05-11 1985-05-21 Elopak Limited Method of making a carton
US5083702A (en) * 1990-03-22 1992-01-28 Minnesota Mining And Manufacturing Company Gable-top container and method and apparatus for construction thereof
US20110089227A1 (en) * 2009-09-25 2011-04-21 Multi Packaging Solutions, Inc. Foldable Packaging Container
US8887983B2 (en) * 2009-09-25 2014-11-18 Multi Packaging Solutions, Inc. Foldable packaging container
US9387952B2 (en) 2009-09-25 2016-07-12 Multi Packaging Solutions, Inc. Foldable packaging container
US9676511B2 (en) 2009-09-25 2017-06-13 Multi Packaging Solutions, Inc. Foldable packaging container
US8550331B2 (en) 2011-05-20 2013-10-08 Multi Packaging Solutions, Inc. Foldable container and attachments
US20130264380A1 (en) * 2012-04-05 2013-10-10 Luke Dolby Sealable carton for liquid-based materials
US9403618B2 (en) 2012-04-05 2016-08-02 Leisurepak Inc. Sealable carton with handle
USD675107S1 (en) 2012-07-20 2013-01-29 Multi Packaging Solutions, Inc. Wrap packaging
USD676337S1 (en) 2012-07-20 2013-02-19 Multi Packaging Solutions, Inc. Wrap packaging

Also Published As

Publication number Publication date
SE334122B (enrdf_load_stackoverflow) 1971-04-05
NO118539B (enrdf_load_stackoverflow) 1970-01-05

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