EP0178702B1 - A cardboard box with closing flaps for semi-automatic closing - Google Patents

A cardboard box with closing flaps for semi-automatic closing Download PDF

Info

Publication number
EP0178702B1
EP0178702B1 EP85201473A EP85201473A EP0178702B1 EP 0178702 B1 EP0178702 B1 EP 0178702B1 EP 85201473 A EP85201473 A EP 85201473A EP 85201473 A EP85201473 A EP 85201473A EP 0178702 B1 EP0178702 B1 EP 0178702B1
Authority
EP
European Patent Office
Prior art keywords
flap
closing
flaps
folded
side flaps
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
EP85201473A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0178702A2 (en
EP0178702A3 (en
Inventor
Frode Jörgensen-Beck
Heinrich Wilhelm Lambach
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.)
Schur Engineering AS
Original Assignee
Schur Engineering AS
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
Application filed by Schur Engineering AS filed Critical Schur Engineering AS
Priority to AT85201473T priority Critical patent/ATE49550T1/de
Publication of EP0178702A2 publication Critical patent/EP0178702A2/en
Publication of EP0178702A3 publication Critical patent/EP0178702A3/en
Application granted granted Critical
Publication of EP0178702B1 publication Critical patent/EP0178702B1/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
    • 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
    • B65D5/0263—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 closures formed by inward folding of flaps, three of them being formed of a continuous strip, the fourth being a separate flap

Definitions

  • the present invention relates to a cardboard box of the type, which is erectable to form a rectangular tube having closing flaps at both ends, the box being usable for receiving, through one end, an object to be packed, whereafter the box is closable at that end by a successive folding in of the closing flaps, viz. first a folding in of two opposed flaps, then a folding in of the flap of a third side of the box and finally a folding in of the closing flap on the opposed, fourth side panel, whereby the box may be finally closed by fastening, e.g.,by glueing, the fourth closing flap over the third closing flap.
  • the invention which seeks to provide a solution to the above problem, is based on the idea that no apparatus modification will be needed when instead the boxes are designed in such a manner that the folding in of the two first closing flaps will result in a positive locking of the flaps in their entirely folded in positions. It has been found that this is in fact possible to achieve without considerable extra costs or even without any extra costs or drawbacks of other kinds.
  • a box of the said type which is characterized by the features stated in the characterizing clause of claim 1.
  • the said oblique folding lines at the opposite sides of the third flap will thus confine respective transverse strip portions connecting the outer side edges of the two first flaps with the adjacent outer side edges of the third flap behind the said folding lines, and when the two first side flaps are folded in simultaneously these strip portions will push the third flap outwardly until the side flaps have been folded in almost entirely, whereby the strip portions will be entirely folded out such that they are laid against the inner side of the third flap.
  • the third flap will be free to pivot back towards its original position projecting axially from the end of the tube, and such a pivot back will occur automatically by virtue of the material bias a produced by the previous outward pivoting of the third flap from its natural position.
  • the third flap pivots back of just somewhat towards its initial position the two side flaps will get locked against being folded out from their now entirely folded in positions, because it will require a large outwardly directed pressure on the insides of these flaps to provoke a renewed folding out of the third flap.
  • FIGs. 1-5 are perspective views of one end of a box member according to the invention, illustrating successive phases of the closing of the box end.
  • the box member shown is a cardboard member, which from a relevant carton factory is supplied as a flat tube member, which is erectable to the rectangular tubular shape as shown in Fig. 1.
  • the open end of the box has two opposite side flaps 2, a lower closing flap 4 ("third flap"), and an upper closing flap 6 ("fourth flap”).
  • the corner lines between the flap 6 and the two side flaps 2 are cut up, while the lower flap 4 is connected integrally with the two side flaps 2 through transverse strip portions 8.
  • the non-illustrated opposite end of the box may be designed in a fully similar manner, though this will of course not be necessary in any way; thus, the other end of the box member may be provided with a so-called self-erecting end closure, which is automatically actuated to close the box end already by the erection of the flat starting member into its rectangular tubular shape.
  • the said strip portions 8 each constitutes a rudiment of a triangular outer area of the lower flap 4 as defined by an oblique folding line a between the portions 4 and 8, this line being directed towards the root corner between the flaps 4 and 2.
  • the folding line a starting from the outer edge of the flap 4, continues inwardly into a transverse slot portion 10 as constituting one leg of an angular slot, the other leg portion 12 of which stretches inwardly along the corner line between the flaps 4 and 2, whereby the slot portions 10 assist in confining the strip portions 8.
  • the angular slot 10,12 leaves an outwardly projecting triangular flap portion 14.
  • the operator folds in the side flaps 2 by applying a finger pressure to the area just outside the strip portions 8.
  • the folding lines a are pressed into the material from the outside thereof, such that by the pressing in of each side flap 2 the strip portions 8 will show a natural tendency to push the lower flap 4 downwardly, see Fig. 2.
  • the associated downward pivoting of the flap 4 will continue until the side flaps 2 as shown in Fig. 3 have reached a position, in which the strip portions are oriented practically vertically downwardly.
  • the operator may start closing or half- closing the other end as here described, whereby the side flaps will form an introduction stop for the article to be packed.
  • Partly closed box members as shown in Fig. 4 may be fed to a buffer or feeding magazine for automatic transfer to a simple end closing apparatus, which will cause the lower flap 4 to be folded upwardly (Fig. 5), to apply a gluestuff to the underside of the upper closing flap 6, and to pivot the latter flap downwardly for adhesively fastening it to the flap 4 over the area shown in hatched lines in Fig. 5, whereafter the box is finished.
  • the projecting triangular portions 14 at the opposed outer sides of the closing flap 4 will serve the purpose of contributing to an effective adherence of the outermost flap 6, such that the latter will be adhesively secured over its entire width.
  • the areas 14 are laid flat against the flaps 2 by intermediate of but a single layer thickness, whereby - despite the folded corner areas - a neat, flat closing of the flaps will be achievable.
  • the areas of double layer thickness, i.e. the areas along the strips 8, are located well spaced from the ends of the glued area, such that they are easily pressed slightly inwardly in the box when the outermost flap 6 is closed, i.e. the folding connections used will not affect the visual appearance of the closed box end.
  • Boxes according to the invention may be produced just as cheap as conventional boxes having four disintegrated closing flaps, only with the use of a modified punching tool.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cartons (AREA)
  • Closing Of Containers (AREA)
  • Wrapping Of Specific Fragile Articles (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Basic Packing Technique (AREA)
  • Making Paper Articles (AREA)
  • Closures For Containers (AREA)
EP85201473A 1984-09-14 1985-09-13 A cardboard box with closing flaps for semi-automatic closing Expired - Lifetime EP0178702B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85201473T ATE49550T1 (de) 1984-09-14 1985-09-13 Kartonbehaelter mit verschlussklappen fuer einen halbautomatischen verschluss.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK4382/84 1984-09-14
DK438284A DK150737C (da) 1984-09-14 1984-09-14 Kartonemballage med lukkeflige til halvautomatisk lukning

Publications (3)

Publication Number Publication Date
EP0178702A2 EP0178702A2 (en) 1986-04-23
EP0178702A3 EP0178702A3 (en) 1987-10-21
EP0178702B1 true EP0178702B1 (en) 1990-01-17

Family

ID=8133034

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85201473A Expired - Lifetime EP0178702B1 (en) 1984-09-14 1985-09-13 A cardboard box with closing flaps for semi-automatic closing

Country Status (5)

Country Link
EP (1) EP0178702B1 (da)
AT (1) ATE49550T1 (da)
DE (1) DE3575400D1 (da)
DK (1) DK150737C (da)
NO (1) NO165909C (da)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5292059A (en) * 1993-03-18 1994-03-08 The Mead Corporation Tubular carton having triangular corner panels

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3529763A (en) * 1968-10-17 1970-09-22 Westvaco Corp Self-locking canister or box

Also Published As

Publication number Publication date
NO853577L (no) 1986-03-17
EP0178702A2 (en) 1986-04-23
DK438284A (da) 1986-03-15
EP0178702A3 (en) 1987-10-21
DK150737B (da) 1987-06-09
DE3575400D1 (de) 1990-02-22
DK438284D0 (da) 1984-09-14
NO165909B (no) 1991-01-21
DK150737C (da) 1988-02-01
NO165909C (no) 1991-05-02
ATE49550T1 (de) 1990-02-15

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