EP0536253A1 - Container. - Google Patents

Container.

Info

Publication number
EP0536253A1
EP0536253A1 EP91912341A EP91912341A EP0536253A1 EP 0536253 A1 EP0536253 A1 EP 0536253A1 EP 91912341 A EP91912341 A EP 91912341A EP 91912341 A EP91912341 A EP 91912341A EP 0536253 A1 EP0536253 A1 EP 0536253A1
Authority
EP
European Patent Office
Prior art keywords
container
edge
blank
liner
shell
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
EP91912341A
Other languages
German (de)
French (fr)
Other versions
EP0536253B1 (en
Inventor
Leo Niklander
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.)
DS Smith Packaging Finland Oy
Original Assignee
METSASERLA Oy
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 METSASERLA Oy filed Critical METSASERLA Oy
Publication of EP0536253A1 publication Critical patent/EP0536253A1/en
Application granted granted Critical
Publication of EP0536253B1 publication Critical patent/EP0536253B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/04—Articles or materials enclosed in two or more containers disposed one within another
    • B65D77/06—Liquids or semi-liquids or other materials or articles enclosed in flexible containers disposed within rigid containers
    • B65D77/061—Liquids or semi-liquids or other materials or articles enclosed in flexible containers disposed within rigid containers the containers being mounted on a pallet

Definitions

  • the invention relates to a container, especially a con ⁇ tainer suited for storing granular material, in which container there is a shell section, polygonal in cross section, and advantageously surrounding a bag made of plastic.
  • the shell part is composed of liners and fluting cardboard placed between them.
  • the con ⁇ tainer includes a separate base section and a lid sec- tion.
  • Containers used for transportation and storage purposes are placed one on top of the other and consequently the lowermost containers carry the weight of those above them.
  • the weight ought to focus via the container lid onto the granules of the plastic raw material and from them onto as large an area as possible of the internal surface of the container' shell.
  • the container shell In order for the above objects to be attained, it is ne- cessary for the container shell to be provided with a structure allowing the shell to be extended in height during the filling operation so that the shell can be filled to the brim. Similarly, it should be possible to reduce the height of the shell to allow for compaction of the plastic raw material once the lid has been placed in position.
  • a container in accordance with the invention is easy to manufacture and use. It is provided with a flex- ible brimming edge made of a single liner and positioned at the top of the shell section.
  • the said brimming edge makes it possible for the plastic bag placed inside the container for receiving the plastic raw material to be filled to the brim in excess of the actual height of the shell section. This in turn is essential in preventing the level of the granular plastic raw material in the container to fall below the level of the top edge of the container shell as this would cause the weight of an overlying container to focus on the edges of the shell of the underlying container.
  • a container of this type is, of course, suited for the storage of all kinds of granular material.
  • the liner forming the outer surface of the shell section of the container in accordance with the invention is pre ⁇ ferably reinforced by webbing in order that even a fairly thin liner would be able to withstand the international drop test referred to in the above.
  • the said web rein- forcement can, of course, be incorporated in any liner, and in several liners in fact, should the need arise.
  • the shell of a container in accordance with the invention is manufactured preferably from an attachment surplus and a section essentially rectangular in shape divided into partial sections of equal size by means of parallel creasings.
  • the blank i.e. the base material for the con ⁇ tainer
  • the blank's outer liner, forming the inner liner of the shell of a finished container, is wider than the other layers in the blank. This being so, that part of the wider liner that extends above the other layers of the blank forms the container's flexible brimming edge.
  • Fluting cardboard and cardboard are particularly suitable as blank material. Other corre ⁇ sponding materials may also be appropriate. When necessa- ry, the number of liner and fluting cardboard layers im ⁇ plemented may exceed those mentioned in the above.
  • Fig. 1 depicts a prior art container provided with two sleeve structures
  • Fig. 2 depicts a prior art container provided with one sleeve structure
  • Fig. 3 depicts a container in accordance with the in- vention
  • Fig. 4 depicts a blank used in the construction of a container in accordance with the invention.
  • the prior art container shown in fig. 1 consists of two external sleeve structures (2 , 3) of the octagonal shell (1) .
  • the upper sleeve structure (2) is shown in the posi ⁇ tion that it assumes when supported .by the protrusions (4, 5) in the shell (1).
  • Figure l also shows the con- tainer's octagonal base section (6) that fits inside the container's shell (1) .
  • the container's octagonal lid sec ⁇ tion (7) fits around the outside of the upper sleeve structure (2) .
  • the prior art container shown in figure 2 corresponds to the container shown in figure 1 except for the one only sleeve structure (2) , essentially equal in height to the shell (1) , used in connection with the container shown in figure 2 .
  • the container in accordance with the invention there is a flexible brimming edge (8) formed on the upper edge of the container shell (1) , the said brimming edge superseding the sleeve structures.
  • the outermost liner in the finished con ⁇ tainer according to the invention is net-reinforced in order to have the container pass the international drop test.
  • the container's octagonal base (6) fits inside the container's shell (1) and the octagonal lid (7) is guided into the container's shell section (1) .
  • the brimming edge (8) is formed of a simple liner, its rigidity is sufficient to support it during the fill- ing up of the plastic bag (9) inserted into the con ⁇ tainer.
  • the lid (7) is placed in position over the container, the brimming edge (8) crumples easily under the lid when a load is imposed upon the lid (7) .
  • the container in accordance with the invention is formed preferably of the blank shown in figure 4, the said blank being essentially rectangular in shape and in it the liner acting as the outside liner at this stage is wider than the other cardboard layers.
  • this wider outside liner becomes the shell's inside liner and provides the container with the flexible brimming edge (8) .
  • Parallel creasing is employed in dividing the blank suitably into the attachment sec ⁇ tion (11) and eight sections (10) of equal width.
  • the said attachment section is used to connect the blank's ends to one another.
  • the most appropriate means of attaching the ends is by using glue and staples. It is thus possible to keep the container shell folded flat during transportation and storage so as to use less room. When this is done, the shell is folded out into its oc ⁇ tagonal shape just prior to the filling stage at which stage its base section (6) and the plastic bag (9) are put in their positions.
  • the invention also includes a container circular in cross section.
  • this type of container can be kept stacked with the end seam glued and pressed flat along two opposite folding creases.
  • the gluing of the container seam can be carried out at the filling stage at which stage the blanks can be trans ⁇ ported fully open in stacks, thereby avoiding the struc- tural weakenings to the shell caused by the creasings.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Glass Compositions (AREA)
  • Devices For Use In Laboratory Experiments (AREA)
  • Thermally Insulated Containers For Foods (AREA)
  • Catching Or Destruction (AREA)
  • Cartons (AREA)
  • Valve Device For Special Equipments (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Closures For Containers (AREA)

Abstract

A container particularly suited for the storage of granular plastic raw material. The container has an octagonal or cylindrical shell section (1) that advantageously surrounds a plastic bag (9). The shell section (1) consists of liners and fluting carbdoard layers placed between them. The top edge of the shell section (1) is provided with a flexible brimming edge (8) made of one of the liners, the said brimming edge making it possible to fill the container to the brim, but when the container is closed and pressures act upon the lid (7) of the container following the compacting of the granular material in the plastic bag (9), the brimming edge (8) crumples.

Description

Container
The invention relates to a container, especially a con¬ tainer suited for storing granular material, in which container there is a shell section, polygonal in cross section, and advantageously surrounding a bag made of plastic. The shell part is composed of liners and fluting cardboard placed between them. Additionally, the con¬ tainer includes a separate base section and a lid sec- tion.
When containers are used to store granular material, a bag made of plastic is placed inside them and the bag is then filled mechanically. One reason for using a plastic bag is to prevent pentane gas contained in the plastic raw material from escaping into the surrounding air dur¬ ing storage. Once the granular raw material is set in motion following the filling operation (e.g. when the lid is put in place or when the filled container is moved) , the plastic raw material becomes compacted in the con¬ tainer. When this happens the container lid should corre¬ spondingly come down but so that the lid would be con¬ stantly supported by the plastic raw material and not by the edges of the container-'s shell. Containers used for transportation and storage purposes are placed one on top of the other and consequently the lowermost containers carry the weight of those above them. As the edges of the shell section of a container cannot withstand such weight, the weight ought to focus via the container lid onto the granules of the plastic raw material and from them onto as large an area as possible of the internal surface of the container' shell.
In order for the above objects to be attained, it is ne- cessary for the container shell to be provided with a structure allowing the shell to be extended in height during the filling operation so that the shell can be filled to the brim. Similarly, it should be possible to reduce the height of the shell to allow for compaction of the plastic raw material once the lid has been placed in position.
In prior art containers, the aforementioned problems have been solved, for example, by using a separate sleeve structure placed on top of the actual shell section. The shell section is provided with tiny catches that support the sleeve so that its top remains above the top of the shell section, thereby providing a brimming edge for the duration of the filling operation. Once such a container has been filled and the lid has been put in position, the pressure from above acting upon the lid will cause the catches supporting the sleeve to give way and the sleeve to slide down along the shell by the required amount.
In prior art solutions of the above kind the practice has been to use either two separate sleeve structures, with one at the top of the shell acting as the adjusting part and the other at the base of the shell acting as a rein¬ forcement for the shell. Use has also been made of single sleeve structures equal in height to the container shell. When sleeve structures are used, container shells are designed so that, together with their sleeve structures, they will be able to withstand the international drop test. In a drop test a full container is dropped from a height of 0.8 metres. A container's shell structures may become damaged but the contents of the container must not become discharged if the container is to pass the test.
The problem with the above kind of prior art solution is the need for the separate sleeve structure which natu¬ rally makes such a container cumbersome to use and manu¬ facture.
A container in accordance with the invention, however, is easy to manufacture and use. It is provided with a flex- ible brimming edge made of a single liner and positioned at the top of the shell section. The said brimming edge makes it possible for the plastic bag placed inside the container for receiving the plastic raw material to be filled to the brim in excess of the actual height of the shell section. This in turn is essential in preventing the level of the granular plastic raw material in the container to fall below the level of the top edge of the container shell as this would cause the weight of an overlying container to focus on the edges of the shell of the underlying container. A container of this type is, of course, suited for the storage of all kinds of granular material.
The liner forming the outer surface of the shell section of the container in accordance with the invention is pre¬ ferably reinforced by webbing in order that even a fairly thin liner would be able to withstand the international drop test referred to in the above. The said web rein- forcement can, of course, be incorporated in any liner, and in several liners in fact, should the need arise.
The shell of a container in accordance with the invention is manufactured preferably from an attachment surplus and a section essentially rectangular in shape divided into partial sections of equal size by means of parallel creasings. The blank (i.e. the base material for the con¬ tainer) consists advantageously of an inner liner and an outer liner and, between them, two layers of fluting cardboard separated by a middle liner. The blank's outer liner, forming the inner liner of the shell of a finished container, is wider than the other layers in the blank. This being so, that part of the wider liner that extends above the other layers of the blank forms the container's flexible brimming edge. Fluting cardboard and cardboard are particularly suitable as blank material. Other corre¬ sponding materials may also be appropriate. When necessa- ry, the number of liner and fluting cardboard layers im¬ plemented may exceed those mentioned in the above.
In the following, the invention is described by referring to one preferred form of implementation depicted in the appended figures, of which
Fig. 1 depicts a prior art container provided with two sleeve structures,
Fig. 2 depicts a prior art container provided with one sleeve structure,
Fig. 3 depicts a container in accordance with the in- vention, and
Fig. 4 depicts a blank used in the construction of a container in accordance with the invention.
The prior art container shown in fig. 1 consists of two external sleeve structures (2 , 3) of the octagonal shell (1) . The upper sleeve structure (2) is shown in the posi¬ tion that it assumes when supported .by the protrusions (4, 5) in the shell (1). Figure l also shows the con- tainer's octagonal base section (6) that fits inside the container's shell (1) . The container's octagonal lid sec¬ tion (7) fits around the outside of the upper sleeve structure (2) . When the lid (7) is placed in position and pressed down, it in turn forces the upper sleeve struc- ture (2) down because the protrusions (4, 5) have been so formed as to give way. The plastic bag inside the con¬ tainer is indicated by the numeral 9.
The prior art container shown in figure 2 corresponds to the container shown in figure 1 except for the one only sleeve structure (2) , essentially equal in height to the shell (1) , used in connection with the container shown in figure 2 .
In the container in accordance with the invention, as shown in figure 3, there is a flexible brimming edge (8) formed on the upper edge of the container shell (1) , the said brimming edge superseding the sleeve structures. Additionally, the outermost liner in the finished con¬ tainer according to the invention is net-reinforced in order to have the container pass the international drop test. Here too, the container's octagonal base (6) fits inside the container's shell (1) and the octagonal lid (7) is guided into the container's shell section (1) . Since the brimming edge (8) is formed of a simple liner, its rigidity is sufficient to support it during the fill- ing up of the plastic bag (9) inserted into the con¬ tainer. However, when the lid (7) is placed in position over the container, the brimming edge (8) crumples easily under the lid when a load is imposed upon the lid (7) .
The container in accordance with the invention is formed preferably of the blank shown in figure 4, the said blank being essentially rectangular in shape and in it the liner acting as the outside liner at this stage is wider than the other cardboard layers. In the container shell formed by folding, this wider outside liner becomes the shell's inside liner and provides the container with the flexible brimming edge (8) . Parallel creasing is employed in dividing the blank suitably into the attachment sec¬ tion (11) and eight sections (10) of equal width. The said attachment section is used to connect the blank's ends to one another. The most appropriate means of attaching the ends is by using glue and staples. It is thus possible to keep the container shell folded flat during transportation and storage so as to use less room. When this is done, the shell is folded out into its oc¬ tagonal shape just prior to the filling stage at which stage its base section (6) and the plastic bag (9) are put in their positions.
The invention also includes a container circular in cross section. During transportation this type of container can be kept stacked with the end seam glued and pressed flat along two opposite folding creases. Alternatively, the gluing of the container seam can be carried out at the filling stage at which stage the blanks can be trans¬ ported fully open in stacks, thereby avoiding the struc- tural weakenings to the shell caused by the creasings.

Claims

Claims :
1. A container, particularly a container suitable for the storage of granular plastic raw material, the container consisting of a shell section (1) , forming a polygonal prism or a cylinder and advantageously surrounding a plastic bag (9) , the shell section being composed of liners and fluting cardboard layers placed between them and of a base section (6) and a lid section (7) made so that they fit into the shell section, characterised in that a brimming edge (8) , composed of at least one of the liner layers of the shell section, has been formed onto the top edge of the shell section (1), the brimming edge having been dimensioned to crumple under stacking and related loads transmitted via the lid.
2. A container as claimed in claim 1, characterized in that the brimming edge (8) has been formed of the liner forming the inner surface of the container's shell (1) .
3. A container as claimed in claim 1, characterized in that at least one of the shell section's (1) liners has been reinforced with a net, e.g. a net made of plastic.
4. A container as claimed in claim 3, characterized in that the liner forming the outer surface of the con¬ tainer's shell section (1) has been reinforced with a net, e.g. a net made of plastic.
5. A blank for constructing a container as claimed in claim 1, the said blank being composed of an attachment surplus (11) and a section essentially rectangular in shape divided into partial sections (10) of equal size by means of parallel creasings, the said blank consisting advantageously of an inner liner forming the inner sur¬ face and an outer liner forming the outer surface and between these liners two fluting cardboard layers separa- ted by a middle liner, characterized in that at least one liner exceeds in width the other cardboard layers forming the blank by an amount equal to the height of the brim¬ ming edge (8) .
6. A blank as claimed in claim 5, characterized in that the liner forming the outermost surface of the blank ex¬ ceeds in width the other cardboard layers forming the blank by an amount equal to the height of the brimming edge (8) .
EP91912341A 1990-07-04 1991-07-01 Container Expired - Lifetime EP0536253B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI903383 1990-07-04
FI903383A FI90406C (en) 1990-07-04 1990-07-04 Container
PCT/FI1991/000208 WO1992000901A1 (en) 1990-07-04 1991-07-01 Container

Publications (2)

Publication Number Publication Date
EP0536253A1 true EP0536253A1 (en) 1993-04-14
EP0536253B1 EP0536253B1 (en) 1995-04-19

Family

ID=8530748

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91912341A Expired - Lifetime EP0536253B1 (en) 1990-07-04 1991-07-01 Container

Country Status (8)

Country Link
EP (1) EP0536253B1 (en)
AT (1) ATE121363T1 (en)
AU (1) AU8211691A (en)
DE (1) DE69109116T2 (en)
FI (1) FI90406C (en)
HU (1) HU209101B (en)
NO (1) NO303056B1 (en)
WO (1) WO1992000901A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8167159B2 (en) * 2008-06-04 2012-05-01 Charles M Nelson Collapsible and reusable drum

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2306134A1 (en) * 1975-04-02 1976-10-29 Pedelucq Jean Michel Container for bulk material - has carrying handle on base and lid and end closure formed of flaps
US4082216A (en) * 1977-02-07 1978-04-04 Eli Lilly And Company Carton and bag container
US4300608A (en) * 1980-05-07 1981-11-17 Bonar Industries Inc. Self-raising strap loop
US4658989A (en) * 1985-07-08 1987-04-21 Bonerb Vincent C Disposable flexible liner for material storage and handling bag, and method of releasably installing the same
US4874258A (en) * 1988-06-23 1989-10-17 Marino Technologies, Inc. Bulk cargo container with inner liner

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9200901A1 *

Also Published As

Publication number Publication date
FI903383A (en) 1992-01-05
WO1992000901A1 (en) 1992-01-23
HU9204131D0 (en) 1993-04-28
NO303056B1 (en) 1998-05-25
DE69109116D1 (en) 1995-05-24
ATE121363T1 (en) 1995-05-15
HUT62531A (en) 1993-05-28
NO930005L (en) 1993-01-04
EP0536253B1 (en) 1995-04-19
DE69109116T2 (en) 1995-11-02
FI90406C (en) 1994-02-10
FI90406B (en) 1993-10-29
AU8211691A (en) 1992-02-04
HU209101B (en) 1994-03-28
NO930005D0 (en) 1993-01-04
FI903383A0 (en) 1990-07-04

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