GB2087359A - Containers formed from blanks - Google Patents

Containers formed from blanks Download PDF

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Publication number
GB2087359A
GB2087359A GB8133049A GB8133049A GB2087359A GB 2087359 A GB2087359 A GB 2087359A GB 8133049 A GB8133049 A GB 8133049A GB 8133049 A GB8133049 A GB 8133049A GB 2087359 A GB2087359 A GB 2087359A
Authority
GB
United Kingdom
Prior art keywords
container
upper edge
joining
container cup
cup
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.)
Granted
Application number
GB8133049A
Other versions
GB2087359B (en
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.)
Esseltepac AB
Original Assignee
Esseltepac AB
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 claimed from SE8007721A external-priority patent/SE433202B/en
Application filed by Esseltepac AB filed Critical Esseltepac AB
Priority claimed from SE8202200A external-priority patent/SE451318B/en
Publication of GB2087359A publication Critical patent/GB2087359A/en
Application granted granted Critical
Publication of GB2087359B publication Critical patent/GB2087359B/en
Expired 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
    • B65D5/20—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-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form
    • B65D5/24—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-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form with adjacent sides interconnected by gusset folds
    • B65D5/248—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-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form with adjacent sides interconnected by gusset folds and at least one side being extended and doubled-over to enclose the adjacent gusset flaps
    • 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
    • B65D5/20—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-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form
    • B65D5/2038—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-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form at least two opposed folded-up portions having a non-rectangular shape
    • 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
    • B65D5/20—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-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form
    • B65D5/2038—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-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form at least two opposed folded-up portions having a non-rectangular shape
    • B65D5/2047—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-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form at least two opposed folded-up portions having a non-rectangular shape trapezoidal, e.g. to form a body with diverging side walls

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)
  • Packages (AREA)

Abstract

A container having upwardly diverging sides and an edge flange is formed from a blank comprising a bottom (1), two opposite short sides (2, 3) having a joining tongue (20) for projecting above the upper edge (12) of the container cup to be formed, two opposite long sides (4, 5) and corner pieces (15) arranged to be folded in and to be secured between the short sides (2, 3) and the projecting long side portions (14). The corner pieces (15) are formed to terminate at least partially below the level of the upper edge (12) of the container cup, and for interconnecting and sealing of the container cup strings (26, 28; 29) of glue, wax, hot-melt or a similar substance are provided so as to prevent the packed goods from penetrating out between any portions of the container and to reach any cut edges of the container. The side edges (17) of the long sides (4, 5) are formed with punched out recesses (23) to provide lugs (23) in which a pulling down tool may engage for releasing the lowermost container of a pile. <IMAGE>

Description

SPECIFICATION Cup formed container The present invention relates to a cup formed container of the type which is made of a plane punched one-piece container blank comprising a preferably rectangular bottom, two opposite sides pieces which are integral with the bottom and which are substantially longer than the bottom edges with which they are connected, two opposite further sides which are shorter than or at most of the same length as the bottom edges with which they are integral and between the said long and short sides triangular joint pieces which are adapted to be fold in between the short sides and the outer portions of the long sides when the container cup is set up, and in which the container around the entire upper edge is formed with a downwards directed edge flange which preferably extends at some angle to the container sides.
Such a container is known for instance from the US patent 4 199 097. In the case that the container blank at the side which is intended to be the inner side of the container is formed with a liquid sealing or gas sealing layer of material, for instance plastic, aluminum, an aluminum-plastic substrate or similar material the said container is well suited for packing of many different types of goods.
When packing liquid or paste formed products it is of importance that the container is completely proof and it is important to forsee that no cut edges of the container blank are located under the level of the upper edge of the container to be formed so that the liquid or paste can penetrate out of the container or come into contact with such cut edges. There is a special problem in packing fat products like butter and margarine etc. which products have a great tendency to creep and a great tendency to penetrate into the base material of the container which may be cardboard or a similar material. Such penetrating fat gives the container a non-attractive appearence, and there is also a risk that the fat extracts harmful substances of the base material of the container.
In order to eliminate this problem the triangular joint pieces used to be formed so high that the cut edges are located above the level of the upper edge of the container to be formed. In order to provide a stable and well interconnected container the short sides generally are formed so as to provide an upwardly projecting ear when the container is set up, which ear can be fold outwards-downwards over the edge flange for being secured to said edge flange. When setting the container up accordingly portions of the triangular joint pieces likewise project above the level of the upper edge of the container, and the joining ear thereby is formed by two layers of material, viz. one layer belonging to the short side and a second layer belonging to the joint piece.Such a joining ear having two layers is difficult to handle and to fold outwards and also to secure to the ege flange and in the ready container cut the joining ear provides a strongly raised step from the edge flange which makes it difficult or even impossible to provide a protecting foil over the edge flange under sealing conditions.
In order to keep such a container together the edges of the opposite long sides facing each other used to be welded or glued along a line close to the joining line and along a line close to the upper edge of the container. In a container having a downwardly directed edge flange it is however difficult to reach the line along the upper edge of the container without damaging the edge flange. In many cases the container cup is also formed conically widened and the containers are piled in each other. For separating container cups which tend to key on each other by means of a machine it is a wish to form portions of the long sides meeting each other with punched out recesses in which a tool for pulling down the container cups may engage thereby releasing the lowermost container cup.In the case that the container is formed with the above mentioned weld joints adjacent the above mentioned meeting edges a punched out recess of the said type may be compressed or even be filled with floating plastic so that the pulling down tool does not get sufficient grip of the container.
The basis of the invention therefore is the problem to provide a container cup of the above mentioned type in which the joining tongue extending above the upper edge of the container is formed mainly of one layer of material and in which the container at the short sides is formed with a punched out recess in which a pulling down tool may engage for releasing the lowermost container in a pile of containers, and in which the container is interconnected without the aid of welding strings of similar means.According to the invention the above mentioned triangular joining tongue is lowered so as to completely be located on a level above the upper edge of the container cup, and the joining and the sealing of the container cup is made by means of two strings of glue, a first string extending from the upper edge of each long side at a point corresponding to the point of contact between the short side and the long side to a point substantially at the centre of the connection line between the long side and the adjacent joining piece, and the second glue string extending from the upper and outer edge of the long side to a point substantially at the centre of the first string of glue.
The gluestrings are formed with some excess of glue, so that three projecting glue sealing points are obtained at the upper edge of the container, viz. both at the connection line between the long sides and at the point, where the short sides meet the long sides.
After the joining tongue is fold down the said excess of glue gives a guarantee that oil, fat or any other materia does not penetrate over the upper edge of the container and does not reach any cut edges of the container material. Depending on the form of the glue strings the outer edges of the long sides can be formed with slight punched through recesses which together provides an opening for connection of a tool for pulling the container down.
According to an alternative embodiment of the above mentioned two glue strings one single glue string may be provided extending along and over the entire outer edge of the triangular corner piece, whereby the said string of glue alone provides a bar against penetration of liquid, oil or fat.
Preferably the upper edge of the triangular corner piece is extended at a slight angle to the projecting joining tongue, whereby a guarantee is obtained that no cut edges of the joining tongue comets into contact with the packed product. The said slight projecting portion of the corner gives a softly and easily accomodating fold to the upper edge when the joining tongue is fold over, and the material is partly pressed outwards, so that the fold over joining tongue is still formed of only one layer of material. The slight step between the fold over joining tongue and the upper edge of the container is equalized depending on the glue which is forced out at the step between the joining tongue and the upper edge of the container.
Further characteristics of the invention will be evident from the following detailed specification in which reference will be made to the accompanying drawings.
In the drawings Figure 1 shows a blank for a container cup according to the invention, and Figure 2 shows in a perspective view a container blank in a partly set up condition Figure 3 shows a container cup which is partly made ready.
Figure 4 is a diagrammatical and fragmentary end view from a short side of the container according to Fig. 3.
The container blank shown in Fig. 1 is made as an integral piece of material, in which all portions of the container are integral and provides a continuously extending peripheral line. The container blank comprises a bottom 1 preferably having a rectangular cross section area, two opposite short sides 2, 3 connected to the bottom and two opposite long sides 4, 5 integral with the bottom. The illustrated container blank is intended to provide an upwardly conically widened container, and for this purpose the short sides are converging in the direction outwards from the bottom and has an average width which is less than the edges 6, 7 of the bottom with which they are integral.The long sides 4, 5 in turn are longer than the corresponding edges 8, 9 of the bottom, and the outer edges of the long sides are bow formed at the points 10, 11 corresponding to the corners of the container to be set up which corners in this case are shown to be rounded. A creasing line 1 2 is provided along the outer edges of the long sides thereby defining an edge strip 1 3 which at the ready container provides an obliquely downwards directed edge flange. Between the portions 14 of the long sides 4, 5 projecting at the sides and the adjacent short sides 2, 3 there are provided triangular corner pieces 1 5 which are adapted to be fold in and be secured between the short sides and the projecting portions 14 of the long sides when the container blank is set up.The corner pieces 1 5 extend from the point of connection 1 6 with the side edges 1 7 of the long sides in a direction towards the upper and outer corner 1 8 of the short sides 2, 3. In order to make it possible to interconnect the edges 1 9 of the edge flange 1 3 facing each other thereby stabilizing the entire container each short side 2, 3 is formed with a projecting joining tongue 20 adapted to be fold outwards-downwards when the container is set up and to be secured to the edge flange 1 3. The outer edge 21 of the corner pieces 15 extend substantially on a straight line in direction to the corner 1 8 of the short sides 2, 3, but close to the said corner the upper edge 21 is slightly bow formed at 22 so as to extend with a tip a slight distance up to the joining tongue 20. For providing a pulling down lug in which a pulling down tool can engage for releasing the lowermost container cup each side edge 1 7 of the long sides 4, 5 is formed with slight punched out recesses 23 which in the ready set up container cup provides an outwardly directed opening at the outermost layer of the container cup.
In order to both provide a safe interconnection of the container cup in its set up condition and to provide a bar towards the packed goods which may be a liquid or a paste like for instance butter or margarine, a string of glue is provided so as to prevent the packed goods to penetrate out or to come into contact with any cut edges of the container cup. The string or strings of glue should be located so that the glue appears both at the meeting edges 1 9 of the edge flanges at the upper edge 24 and at the point 25 of the upper edge at which the side edges of the short sides meet the long sides.
By glue is in this connection meant any plastic mass which is capable of giving an adhesive effect between the different parts of the container and a sealing against the packed goods. The plastic mass can be a conventional glue or a wax of so called hot-melt-type or it may be of any other suitable type.
In Figs. 1 and 2 two basically different methods of applying the strings of glue is illustrated. In the upper and righthand half of Figs. 1 and 2 is shown a two parted string of glue which comprises a first string of glue 26 which extends from the point 25 where the short edges of the short sides 2, 3 meet the long sides 4, 5 at the upper edge of the container and two a point somewhere along the creasing line 27 between the long side 4, 5 and the adjacent corner piece 15, and a second string of glue 28 which extends from the point 24 where the long sides 4, 5 meet at the upper edge of the container to a point somewhere along the string of glue 26. It should be foreseen that the strings of glue 26 and 28 have some excess of glue at least at the points 24 and 25 so that a guarantee is obtained that the packed goods do not penetrate over the upper edge and reaches any cut edges.
In the lower half of Fig. 1 and the left hand half of Fig. 2 is shown an alternative method of applying a string of glue. In this case the string of glue 29 is applied along the entire upper edge 21 of each corner piece 15, and preferably the glue is applied so as to form a string which encloses the upper edge 21 both from the inside and the outside. Also the string of glue should cover the tip 22 projecting to the joining tongue 20.
The setting up of the container is made as illustrated diagrammatically in Fig. 2 in that the short sides 2, 3 are slightly raised, whereupon the long sides 4, 5 are allowed to follow the said raising movement, and concurrently therewith the edge flanges 1 3 are fold down.
The corner pieces 1 5 are fold in between the short sides 2, 3 and the projecting side portions 1 4 of the long sides 4, 5 and the container is secured in its set up condition by means of the strings of glue 26, 28 or 29 respectively, and finally the joining tongue 20 is fold down and is secured to the outside of the edge flange 1 3. As mentioned above the projecting tips 22 of the corner pieces 1 5 do not give any substantial thickening of the upper edge of the joining tongue 20 but only give a soft rounding when folding the joining tongue 20 down round the upper edge, The projecting tip 22 together with the excess of glue appearing at this place, however, gives a guarantee that the packed goods cannot move upwards and cannot reach any cut edges of the container blank. In a ready set up container the two punched out recesses 23 at the long sides give an elongated cavity at the outermost layer of the container cup, which cavity is well separated from the interior of the container and which provides a useful and in some cases necessary point of grip for a pulling down tool for providing a releasing of the lowermost container cup included in a number of containers piled into each other.
It is to be understood that the above described embodiments of the invention, which are also illustrated in the drawings, are only of illustrating nature and that all kinds of modifications may be presented within the scope of the appended claims.

Claims (9)

1. Cup formed container of the type which is made of a plane punched blank, in which the peripheral line round the upper edge of the container provides an evenly extending line, and in which the container is formed with an edge flange (13) extending obliquely downwards from the upper edge of the container and the container preferably is conically widened in the direction upwards and is made of a container blank comprising bottom (1), two opposite short sides (2, 3) which are integral (over 6, 7) with the bottom and which are formed with an outer extended portion (20) providing a joining tongue (20) projecting above the upper edge (12) of the container, two opposite long sides which are integral (over 8, 9) with the bottom and which are longer than the bottom edges (8, 9) over which they are connected, and in which the long side portions (14) projecting at each side are adapted to be secured to the exterior side of the short sides (2, 3), and between the extended long side portions (14) and the short sides (2, 3) triangular corner pieces (15) adapted to be fold in and be secured between the short sides (2, 3) and the extended side portions (14) of the long sides (4, 5), characterized in that at least the main portion of the upper edge (21) of the corner pieces (15) is lowered so as to be placed on a level underneath the upper edge (12) of the container cup, and in that the container is interconnected in that one or more strings (26, 28; 29) of a joining and sealing substance is applied so as to provide a bar preventing the packed goods from penetrating out of the container cup and to come into contact with any cut edges of the container blank and so that some excess of the joining and sealing substance (26, 28; 29) projects at least at the points (25) where the side edges of the short sides (2, 3) meet the long sides (4, 5) at the upper edge (12) of the container cup.
2. Container cup according to claim 1, characterized in that the long sides (4, 5) at the side edges (17) are formed with punched out recesses (23) which at the ready set up container cup provides a through bore (23) of the outermost container layer, in which bore a pulling down means may engage for releasing the lowermost container cup of a pile of container cups, and whereby the punched at recesses (23) are provided outside of the joining and sealing substance (26, 28; 29).
3. Container cup according to claim 1 or 2, characterized in that the joining and sealing substance is applied as two strings (26, 28) on the plane container blank, one string (26) of which extends from the upper edge (12) of the container cup to be set up at the point (25) where the side edge of the short sides (2, 3) meet the long side to a point along the connection line (27) between the long side (4, 5) and the adjacent corner piece (15), whereas the second string (28) extends from the side edge (1 7) of the long side (4, 5) at the upper edge (1 2) of the container cup to be set up to a place along the first mentioned string (26) of joining and sealing substance.
4. Container cup according to claim 1 or 2, characterized in that the joining and sealing substance is provided as a string (27) extending along the upper edge (21) of each corner piece (15).
5. Container cup according to any of the preceding claims, characterized in that the upper edge (21) of each corner piece (15) extends substantially on a straight line to the point (25) where the side edge of the short side (2, 3) meets the long side (4, 5) but is bowed a slight distance up to the projecting joining tonguee (20), and in that a string (29) of joining and sealing substance covers the entire upper edge (21) of the corner piece (25) and the projecting tip (22) thereof both at the inside and the outside of the container blank.
6. Container cup according to claim 2, characterized in that an excess of joining and sealing substance appears at the upper edge of the container cup at the point (24), where the long sides (4, 5) and the edge flanges (13) come into contact facing each other, and in that a further string of joining and sealing substance is provided along the upper edge (21) of the corner pieces (15).
7. Container cup according to any of the preceding claims, characterized in that the joining and sealing subatance is glue, wax, hot-melt or any other psastically joining and sealing substance applied to the upper side of the container blank before the sides are set up to a ready container cup.
8. Container cup according to claim 2 and any of claims 3-7, characterized in that the string or strings of joining and sealing substance (26, 28; 29) at a ready set up container cup are provided at least some distance inside the pulling down lug provided by the punched out recesses (23) at the edges (17) of the long sides (4, 5).
9. A container cup substantially as herein described and shown in the accompanying drawings.
GB8133049A 1980-11-04 1981-11-03 Containers formed from blanks Expired GB2087359B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8007721A SE433202B (en) 1980-11-04 1980-11-04 SCALE PACKAGING
SE8202200A SE451318B (en) 1982-04-06 1982-04-06 Containers formed from folded blanks

Publications (2)

Publication Number Publication Date
GB2087359A true GB2087359A (en) 1982-05-26
GB2087359B GB2087359B (en) 1985-04-03

Family

ID=26657717

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8133049A Expired GB2087359B (en) 1980-11-04 1981-11-03 Containers formed from blanks

Country Status (2)

Country Link
DE (1) DE3143375A1 (en)
GB (1) GB2087359B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5253802A (en) * 1992-11-09 1993-10-19 General Mills, Inc. Foldable, microwavable baking pan usable as a promotional device
FR2875478A1 (en) * 2004-09-22 2006-03-24 Alliora Am Soc Par Actions Sim Flank for forming e.g. liquid product container, has folding lines made rectilinear and equiangular between lateral panels to fold intermediate panels flatly on lateral panels and unit maintaining intermediate panels on lateral panels
FR2922863A1 (en) * 2007-10-24 2009-05-01 Fdr Emballages Sarl Tray or plate type disposable container for containing e.g. juicy food, has sheet with tongues arranged in prolongation of branches of lines and with notches arranged quasi symmetrical to tongues with respect to longitudinal branches

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5253802A (en) * 1992-11-09 1993-10-19 General Mills, Inc. Foldable, microwavable baking pan usable as a promotional device
FR2875478A1 (en) * 2004-09-22 2006-03-24 Alliora Am Soc Par Actions Sim Flank for forming e.g. liquid product container, has folding lines made rectilinear and equiangular between lateral panels to fold intermediate panels flatly on lateral panels and unit maintaining intermediate panels on lateral panels
FR2922863A1 (en) * 2007-10-24 2009-05-01 Fdr Emballages Sarl Tray or plate type disposable container for containing e.g. juicy food, has sheet with tongues arranged in prolongation of branches of lines and with notches arranged quasi symmetrical to tongues with respect to longitudinal branches
FR2922871A1 (en) * 2007-10-24 2009-05-01 Fdr Emballages Sarl CONTAINER TYPE TRAY OR PLATE CONSISTING OF A FOLDING SHEET.

Also Published As

Publication number Publication date
GB2087359B (en) 1985-04-03
DE3143375A1 (en) 1982-09-23

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PCNP Patent ceased through non-payment of renewal fee