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
  • B65D77/0446—Articles or materials enclosed in two or more containers disposed one within another the inner and outer containers being rigid or semi-rigid and the outer container being of polygonal cross-section not formed by folding or erecting one or more blanks
  • B65D77/0453—Articles or materials enclosed in two or more containers disposed one within another the inner and outer containers being rigid or semi-rigid and the outer container being of polygonal cross-section not formed by folding or erecting one or more blanks the inner container having a polygonal cross-section
  • B65D77/0466—Articles or materials enclosed in two or more containers disposed one within another the inner and outer containers being rigid or semi-rigid and the outer container being of polygonal cross-section not formed by folding or erecting one or more blanks the inner container having a polygonal cross-section the containers being mounted on a pallet

Definitions

• the present invention relates to a transport container assembly / a so-called pallet container, comprising a pallet and an associated container secured to the top side thereof, especially intended for the transportation and storage of bulk material, such as plastic pellets and the like.
• Containers of the above-defined type are utilized as disposable containers, i.e., they are not returned and reused. It is therefore obvious that such containers should be as inexpensive as possible to manufacture, yet should be rugged enough not to become damaged under the stresses to which they are subjected during use. It should be noted that the stresses are relatively great, since such containers often are utilized to contain 1000 kg real weight.
• the pallet utilized in such pallet containers is normally a four-way pallet, i.e., the pallet has openings on four sides for convenient access from all sides for the fork of a fork truck.
• Europallets have most often been utilized, i.e., pallets composed of two wooden plat orms with intermediate spacer blocks.
• the container or drum part of the pallet container has usually been made of double-sided corrugated cardboard. This-is a relatively inexpensive and strong material, but has definite limitations in regard to the shape of container possible. Double-sided corrugated cardboard cannot be shaped along a curved line, but must be bent and broken along straight lines.
• the object of the present invention is to provide a pallet container wherein the above drawbacks are avoided, obtaining a pallet container which is inexpensive to produce, efficient and practical in use, which has a desirable shape from the point of view of force distribution, and which is more moisture-resistant than the previously used pallet containers of this type.
• a pallet container of the type defined introductorily which is characterized in that the pallet has an upturning, circular neck or collar, and a body shell made of a plurality of adhered plies of sheet-formed material, especially paper, is secured to the exterior of the neck or collar.
• the shell consists of wound, one-sided corrugated cardboard with the corrugated side facing inwardly.
• a preferred embodiment is characterized in that inside the con ⁇ tainer, which consists of the shell and pallet, a watertight bag or sack, preferably made of plastic, is permanently glued.
• a practical embodiment of the invention is characterized in that the periphery of the neck is toothed or corrugated, adapted to the corrugated side of the one-sided corrugated cardboard.
• the pallet consists of expanded plastic, e.g., expanded polystyrene, and forms a sealed surface.
• a method of producing pallet containers comprising a pallet and a container secured to the top side of the pallet, especially intended for the transportation and storage of bulk materials, is characterized in that the top side of a pallet is secured to the end of a winding mandrel having a diameter corresponding to the diameter of the neck, and one-sided corrugated cardboard to which glue has been applied is wound in several plies around the mandrel and neck of the pallet so that the plies become glued to each other and to the neck.
• a further development of the method of the invention is characterized in that a watertight sack of a suitable material, e.g., plastic, is drawn over the mandrel before the pallet is attached to the end of the mandrel and that the wound shell is glued to the sack.
• a suitable material e.g., plastic
• the pallet container in accordance with the invention is inexpensive to produce, since a very simple winding tool can be used and the container shell is produced by simple winding of, e.g., one-sided corrugated cardboard to which glue has been applied, the plies of cardboard then becoming glued to each other and to the neck of the pallet.
• the use of piece-goods material is thereby avoided, which necessarily results in discontinuous production, as is the case in the manufacture of polygonal containers using double-sided corrugated cardboard.
• the least possible quantity of material may be utilized for enclosing a specific cross-sectional area.
• the circular shape will not become deformed by pressure from the cargo inside it, and also withstands external stresses better than polygonal containers.
• the containers of circular, tubular shape have optimum breaking strength.
• Figure 1 shows an embodiment of a pallet container in accordance with the invention
• Figure 2 is a cross section along the line II-II in Figure 1,
• Figure 3 is a cross section along the line III-III in Figure 2
• Figure 4 is a schematic drawing showing the production sequence for a pallet container in accordance wi-th the invention.
• the pallet container of the invention consists of a pallet 1 which preferably is molded of expanded polystyrene.
• the pallet consists of a solid plate 2 with legs extending downwardly from the bottom surface thereof, in the illustrated example nine legs 3, arranged so that two openings 4 are pro ⁇ vided on each side for inserting the fork of a conventional fork truck. To avoid unnecessary moments of force, the corners of the pallet are bevelled off.
• Secured to the top side of the pallet is a circular shell 5 made of windings of sheet-formed material.
• the top opening of the container is closed by a lid 6.
• the container is filled with bulk goods 7, e.g., 1000 kg of plastic granules.
• FIG. 2 A practical embodiment of the pallet container may be seen more clearly in Figures 2 and 3.
• an upturning circular neck 8 is provided, to which the shell 5 is secured.
• the shell consist of several plies of one-sided corrugated cardboard (seen best in Figure 3 ⁇ .
• the neck 8 has a corrugated periphery 9 corres ⁇ ponding to the corrugations 10 on the inner corrugated ply 11 of the shell. Optimum joining of the shell 5 to the neck 8 is thereby obtained.
• the top surface of the pallet may have a sloping edge 12. Inside the container, a bag or sack 13 of plastic may be glued.
• Figure 4 shows how the pallet container of the inven ⁇ tion is produced.
• the sack 13 is drawn over the winding mandrel 14 on a winding machine 15.
• the outer end of the mandrel is provided with a pin 16 which fits snugly inside a hole 17 in the top surface of the pallet 1.
• the mandrel 14 has the same diameter as the neck 8 of the pallet 1.
• a glue applicator 19 Disposed between the winding mandrel 14 and the roll 18 is a glue applicator 19 for applying glue to the sheet material 20 on the inner surface of the material facing toward the mandrel.
• the one-sided corrugated cardboard is wound with the corrugated side facing inwardly toward the mandrel.
• the first ply of the shell 5 must be without glue on the initial portion thereof which will be in contact with the mandrel, being pro ⁇ vided with glue only on the portion thereof which lies around the neck 8.
• the mandrel can either be made to be collapsible, or one can introduce air into the mandrel which penetrates through small jet openings in the mandrel to pass out between the mandrel and the wound shell.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Pallets (AREA)
• Making Paper Articles (AREA)
• Liquid Developers In Electrophotography (AREA)
• Sorption Type Refrigeration Machines (AREA)
• Semiconductor Lasers (AREA)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (1)

Family

ID=19886006

Family Applications (1)

Country Status (6)

Cited By (2)

Families Citing this family (1)

Citations (3)

• 1981
  • 1981-04-07 NO NO811197A patent/NO149203C/no unknown
• 1982
  • 1982-04-01 DE DE8282901023T patent/DE3265169D1/de not_active Expired
  • 1982-04-01 EP EP82901023A patent/EP0075573B1/en not_active Expired
  • 1982-04-01 WO PCT/NO1982/000016 patent/WO1982003371A1/en active IP Right Grant
  • 1982-11-19 FI FI823980A patent/FI68581C/fi not_active IP Right Cessation
  • 1982-12-06 DK DK538882A patent/DK147731C/da not_active IP Right Cessation

Patent Citations (3)

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