CA2078433A1 - Pallet - Google Patents
PalletInfo
- Publication number
- CA2078433A1 CA2078433A1 CA 2078433 CA2078433A CA2078433A1 CA 2078433 A1 CA2078433 A1 CA 2078433A1 CA 2078433 CA2078433 CA 2078433 CA 2078433 A CA2078433 A CA 2078433A CA 2078433 A1 CA2078433 A1 CA 2078433A1
- Authority
- CA
- Canada
- Prior art keywords
- pallet
- coil
- lid
- base
- legs
- 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.)
- Abandoned
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
- B65D19/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D19/0004—Rigid pallets without side walls
- B65D19/0006—Rigid pallets without side walls the load supporting surface being made of a single element
- B65D19/003—Rigid pallets without side walls the load supporting surface being made of a single element forming discontinuous or non-planar contact surfaces
- B65D19/0032—Rigid pallets without side walls the load supporting surface being made of a single element forming discontinuous or non-planar contact surfaces the base surface being made of a single element
- B65D19/0036—Rigid pallets without side walls the load supporting surface being made of a single element forming discontinuous or non-planar contact surfaces the base surface being made of a single element forming discontinuous or non-planar contact surfaces
- B65D19/004—Rigid pallets without side walls the load supporting surface being made of a single element forming discontinuous or non-planar contact surfaces the base surface being made of a single element forming discontinuous or non-planar contact surfaces and each contact surface having a discrete foot-like 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
- B65D71/00—Bundles of articles held together by packaging elements for convenience of storage or transport, e.g. portable segregating carrier for plural receptacles such as beer cans or pop bottles; Bales of material
- B65D71/02—Arrangements of flexible binders
-
- 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
- B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
- B65D85/67—Containers, packaging elements or packages, specially adapted for particular articles or materials for web or tape-like material
- B65D85/671—Containers, packaging elements or packages, specially adapted for particular articles or materials for web or tape-like material wound in flat spiral form
- B65D85/672—Containers, packaging elements or packages, specially adapted for particular articles or materials for web or tape-like material wound in flat spiral form on cores
-
- 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
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00009—Materials
- B65D2519/00014—Materials for the load supporting surface
- B65D2519/00034—Plastic
-
- 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
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00009—Materials
- B65D2519/00049—Materials for the base surface
- B65D2519/00069—Plastic
-
- 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
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00009—Materials
- B65D2519/00189—Materials for the lid or cover
- B65D2519/00208—Plastic
-
- 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
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00258—Overall construction
- B65D2519/00263—Overall construction of the pallet
- B65D2519/00268—Overall construction of the pallet made of one piece
-
- 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
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00258—Overall construction
- B65D2519/00283—Overall construction of the load supporting surface
- B65D2519/00288—Overall construction of the load supporting surface made of one piece
-
- 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
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00258—Overall construction
- B65D2519/00313—Overall construction of the base surface
- B65D2519/00318—Overall construction of the base surface made of one piece
-
- 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
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00258—Overall construction
- B65D2519/00313—Overall construction of the base surface
- B65D2519/00328—Overall construction of the base surface shape of the contact surface of the base
- B65D2519/00338—Overall construction of the base surface shape of the contact surface of the base contact surface having a discrete foot-like 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
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00258—Overall construction
- B65D2519/00398—Overall construction reinforcements
- B65D2519/00402—Integral, e.g. ribs
- B65D2519/00407—Integral, e.g. ribs on the load supporting surface
-
- 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
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00258—Overall construction
- B65D2519/00398—Overall construction reinforcements
- B65D2519/00402—Integral, e.g. ribs
- B65D2519/00412—Integral, e.g. ribs on the base surface
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pallets (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
A plastic molded pallet for coils of metal has a base (10), a series of support legs (12) to permit insertion of the forks of a forklift truck from a multiplicity of directions and a centrally located upstanding dowel (11) for engaging within the central cavity of a coil for restraining movement of the coil in a plane parallel to the base during shipment. A complementary lid (20) may be used with upstanding location means (26) for locating the support legs (12) of another pallet placed in the stack and location means (27, 28) for tiedown strapping is provided for securing a coil and engaging firmly the edge of a coil even when of lesser diameter than that the lid (20).
Description
2~?06 2 0 7 ~ PCl'/AU92/00018 n PAI.LET "
TECHNICAL FIELD
The present invention relates to pallets for shipping purposes and is especially concerned with the 5 shipment of coils of metal strip but the invention may be equally applicable to the shipment o~ other products particularly in coil form but not necessarily so~
BAC~GROUND ART
During transportation, a pallet may be subjected to severe forces duo to impact when the pallet and its load is picked up and deposited by a forkli~t truck and furthermore during transportation forces aro imposed due to substantial accelerat~ons and decelerations~ For e~ample, when the pallet is being moved by rail, during shun~ing operations to prevent damage to the product on the pallet, the pallet must support the product and restrain movement.
Substantial economic loss occurs, for esample, in relation to coils of thin aluminium strip where movement of the coil occurs on a conventional pallet thereby damaging the coil. It has been now found that strapping the coil onto a pallet, with tha a~is of the coil being vertical, does not adeguately restrain movement of the coil and damage has easily occurred. The user of the coil will typically be intending to manufàcture aluminium cans for beverages and any damage to the strip must be removed .
since such damaged strip cannot be used in precision machinery. Not only is there a loss of valuable aluminium strip but also machine down~-time and labour cost contribute to the economic loss~ ~ `
Thus, there has been a long standing problem of `
damage to coils of aluminium which typically weigh around si~ tonnes, have a diameter of around 1.4 meters and a .
width of around 1~5 meters. Attempts to protect the coil from movement on a timber pallet have included nailing timber battens to the upper surface of the pallet to attempt to restrict movement of the coil and also placing a thick rubber mat under the coil before it is placed on -, ---WO92~1290~ 2 Q 7 8 ~13 ~ PCT/AU92/~
the pallet. In an attempt to further protect the coil it has been wrapped in plastic sheet material and strapped to the pallet.
Another approach that has been proposed involves the formation of a pallet from two moulded plastic halves which interengage and have an upstanding lip. The periphery of the pallet is secured by a steel band which pulls the two halves towards one another so that the lip engages around the periphery of the coil~ However these pallets are e~pensive, heavy and only a very small range of adjustment is possible to accommodate coils of different diameter~ This results in substantial capital investment for a range of pallet sizes ~or a typical aluminium strip product plant as significant variation in coil diameter occurs in practice~ The capital cost o such pallets is a serious disadvantage as, for many consignments involving esport, it is not practicable or feasible to return the pallets for further use~ The pallets are of special purpose design and would have not general utility for shipment~
DISCLOSURE OF INVENTI~N
The present invention consists in one aspect, in a pallet suitable for shipment of coils of metal strip or similar products and comprises a base for supporting the product, support means connected to the base and shaped and dimensioned for supporting the base and providing a clearance under the base for the insertion of forks of a forklift truck, and a centrally located dowel connected to the base and projecting upwardly therefrom for`engaging within a central cavity in tha product for restraining movement of the product in a plane parallel to the base.
P~eferably the dowel is of circular shape and tapered upwardly to facilitate location and engagement of the cavity in the product. Advantageously the dowel can be of the order of 25mm to 75mm in height~ When the invention is used $or transporting coils of metal strip, the dowel typically will have a diameter of about 250mm and a taper of a few percent over the height of the dowel . ..
. - .. . .
- , ` .
. ...
- - . :
W092/l2906 2 0 7 ~ d ~ ~ PCT/A~192/~
has proven to be convenient and satisfactory.
Advantageously, embodiments of the invention are formed ~ith the base of circular shape whereby a high density of packing of pallets can be achieved.
Alternatively the base could be of polygonal shape of at least five sides again to achieve high density pac~ing.
For example it has been found that a standard shipping container will accommodate onl~ three conventional timber pallets but four pallets in accordance with the present invention can be accommodated in the same space thereby offering substantial economic advantage~
In a preferred embodiment, the support means comprises a mult~plicity of lQgs in spacad array and most proferably the array permits the forks of a forklift truck to be insert~d from any one of four directions~
Most preferably the array of leqs includes a central space for accommodating the dowel of another pallet so that an interengaged stack can be formed.
In a preferred embodiment, the pallet is formed as `
a single plastic moulding and it has been found that this can be achieved economically by low pressure injection moulding in polypropylene. For the purpose of shipping six ton coils of aluminium strip, it has been found that a relatively cheap, lightweight and durable pallet can be formed. Typically the pallet will weigh only about 16KG
and the pallet is of competitive price having regard to ~
its durability compared to timber pallets. Such a pallet i is considered to be economic for e~port where return of the pallet is not feasible and in any event the pallet is of valuable plastic material which can be recycled to form other products after shipment of the coil.
In another aspect the invention estends to a lid of suitable form for use on a coil supported on a pallet and the invention also estends to a method of shipment using such items~
BRIEF DESCRIPTION OF DRAWINGS
For illustrative purposes only, an embodiment of the invention will be described with reference to the .
,, , ' ~ U ~
W092/12~6 PCT/AU92/~18 accompanying drawinqs of which:-Figure l is a perspective view from above of a pallet;
Figure 2 is a side elevation of the pallet;
Figure 3 is a sectional side elevation of the pallet taken along the line A-A in Figure 4;
Figure 4 is a plan view of the pallet;
Figure 5 is an inverted plan view of the pallet;
Figure 6 is a plan view of a complimentary lid to be used with the pall~t of FiqurQs l to 5; and Figure 7 is a cross sectional vie~ taken along the line ~-B of Figure 6~
MODES FOR CARRYING OUT THE INVENTION
The pallet and lid illustrated are each integrally formed in polypropylene by low pressure injection moulding in a single operation. The pallet comprises a circular base lO, having an upstanding peripheral lip 9, an integral upstanding dowel ll and array of twelve support legs 12. The dowel is slightly tapered, has an internal cross-shaped strengthening wall 17, and is of the order of 50mm hiyh. The pallet diameter is 1590mm and thus can accommodate a wide range of coil sizes. Each of the support legs is hollow and slightly tapered and stiffened by a set of radially outwardly e~tending buttress walls 15, and a cross-shaped interior webbing 16. In the case of the buttress walls 15A reaching the periphery o~ the base, the buttress is the full depth of the support legs but the other buttress walls 15 terminate short of the bottom of the support leg.
As illustrat~d in figure 5 by arrows a forklift truck can insert its forks in any one of four directions under the pallet~ This facilitates pallet handling is an , advantage over many one-trip pallets where strip-like supports for the base are used thereby restricting access ``
of forks to two directions. Furthermore the array of legs `
provides a high degree of stability irrespective of direction of any loads or forces during transportation.
The base also includes a series of four notches 13 - -. -, ~;
`~
.
WO92/12906 2 ~ 7 ~ fl 3 ~:~ PCT/AUg2/~18 each defined by respective pairs of parallel walls 14 for accommodating strapping which can facilitate holding in place protective plastic sheeting.
Referring now to the lid of Figures 6 and 7, the lid 20 is of the same overall diametar as the pallet 10.
The lid comprises a thin plastic disc-shaped portion 21 with a downwardly extending peripheral skirt 22 interrupted at our equally spaced locations ~3, a central depending collar 24 and, e~tending from tha upper surface, a central smaller location collar 2~ and an array of location rings 26.
Tho location rings 26 are dimensioned to accomodate and locate the bases of the support legs 1~ o another pallet which may be placad on top of tha lid to ~orm a stack. Similarly the collar ~5 is dimensioned and located to cooperate with the rings and depending collar 24 of another lid so lids may be stacked and located for shipment and storage.
A series of four identical tie locators 27 are provided equally spaced around the lid, the radially outer portion of each locator being where there is an ` `
interruption 23 in the peripheral skirt 22. Each locator comprises a pair o~ spaced upstanding walls 28 e~tending substantially radially so that a tiedown strap passes between the walls and over the edge of the lid to secure the lid and a coil onto a supporting pallet. A series of transverse grooves or slots 29 are provided in the plastic material between the walls 28 thereby providing lines of weakening. When a strap-like tie is tensioned over a coil having an e~ternal diameter less than the full diameter of the lid, the plastic material can shear along one or more ``
of the grooves to tighten the tie so as to bear on the edge of the coil. `
A further feature which may be utilised is the provision of packing rings, the e~ternal dimension of the upstanding dowel 11 on the pallet being chosen to represent the smallest diameter used on a coiliny machine. If machines providing a greater coil diameter WO92/1~6 2 ~ 7 8 -~ 3 ~ PCT/AU92/~18 _ are used then packing rin~s are simply inserted to make the coil a snug fit.
The present invention can be applied in plastics material such as polypropylene which readily can be recycled when pallets become damaged. It is envisaged that a multiplicity of trips will be completed before pallet damage is likely. It is then a simple matter to reuse the material to make further lids and pallets.
Embodiments of the inv~ntion can be utilised with plastic wrapping materials so that a completely weather tight package is providQd to protect valuable products such as thin aluminium strips when in transit from the place of manuacturQ to the placa of utilisation.
Embodiments o~ the in~ention permit fast, safe and reliable handling with minimal chance of coil damage and wastage compared with conventional palletisation and delivery systems~
.
TECHNICAL FIELD
The present invention relates to pallets for shipping purposes and is especially concerned with the 5 shipment of coils of metal strip but the invention may be equally applicable to the shipment o~ other products particularly in coil form but not necessarily so~
BAC~GROUND ART
During transportation, a pallet may be subjected to severe forces duo to impact when the pallet and its load is picked up and deposited by a forkli~t truck and furthermore during transportation forces aro imposed due to substantial accelerat~ons and decelerations~ For e~ample, when the pallet is being moved by rail, during shun~ing operations to prevent damage to the product on the pallet, the pallet must support the product and restrain movement.
Substantial economic loss occurs, for esample, in relation to coils of thin aluminium strip where movement of the coil occurs on a conventional pallet thereby damaging the coil. It has been now found that strapping the coil onto a pallet, with tha a~is of the coil being vertical, does not adeguately restrain movement of the coil and damage has easily occurred. The user of the coil will typically be intending to manufàcture aluminium cans for beverages and any damage to the strip must be removed .
since such damaged strip cannot be used in precision machinery. Not only is there a loss of valuable aluminium strip but also machine down~-time and labour cost contribute to the economic loss~ ~ `
Thus, there has been a long standing problem of `
damage to coils of aluminium which typically weigh around si~ tonnes, have a diameter of around 1.4 meters and a .
width of around 1~5 meters. Attempts to protect the coil from movement on a timber pallet have included nailing timber battens to the upper surface of the pallet to attempt to restrict movement of the coil and also placing a thick rubber mat under the coil before it is placed on -, ---WO92~1290~ 2 Q 7 8 ~13 ~ PCT/AU92/~
the pallet. In an attempt to further protect the coil it has been wrapped in plastic sheet material and strapped to the pallet.
Another approach that has been proposed involves the formation of a pallet from two moulded plastic halves which interengage and have an upstanding lip. The periphery of the pallet is secured by a steel band which pulls the two halves towards one another so that the lip engages around the periphery of the coil~ However these pallets are e~pensive, heavy and only a very small range of adjustment is possible to accommodate coils of different diameter~ This results in substantial capital investment for a range of pallet sizes ~or a typical aluminium strip product plant as significant variation in coil diameter occurs in practice~ The capital cost o such pallets is a serious disadvantage as, for many consignments involving esport, it is not practicable or feasible to return the pallets for further use~ The pallets are of special purpose design and would have not general utility for shipment~
DISCLOSURE OF INVENTI~N
The present invention consists in one aspect, in a pallet suitable for shipment of coils of metal strip or similar products and comprises a base for supporting the product, support means connected to the base and shaped and dimensioned for supporting the base and providing a clearance under the base for the insertion of forks of a forklift truck, and a centrally located dowel connected to the base and projecting upwardly therefrom for`engaging within a central cavity in tha product for restraining movement of the product in a plane parallel to the base.
P~eferably the dowel is of circular shape and tapered upwardly to facilitate location and engagement of the cavity in the product. Advantageously the dowel can be of the order of 25mm to 75mm in height~ When the invention is used $or transporting coils of metal strip, the dowel typically will have a diameter of about 250mm and a taper of a few percent over the height of the dowel . ..
. - .. . .
- , ` .
. ...
- - . :
W092/l2906 2 0 7 ~ d ~ ~ PCT/A~192/~
has proven to be convenient and satisfactory.
Advantageously, embodiments of the invention are formed ~ith the base of circular shape whereby a high density of packing of pallets can be achieved.
Alternatively the base could be of polygonal shape of at least five sides again to achieve high density pac~ing.
For example it has been found that a standard shipping container will accommodate onl~ three conventional timber pallets but four pallets in accordance with the present invention can be accommodated in the same space thereby offering substantial economic advantage~
In a preferred embodiment, the support means comprises a mult~plicity of lQgs in spacad array and most proferably the array permits the forks of a forklift truck to be insert~d from any one of four directions~
Most preferably the array of leqs includes a central space for accommodating the dowel of another pallet so that an interengaged stack can be formed.
In a preferred embodiment, the pallet is formed as `
a single plastic moulding and it has been found that this can be achieved economically by low pressure injection moulding in polypropylene. For the purpose of shipping six ton coils of aluminium strip, it has been found that a relatively cheap, lightweight and durable pallet can be formed. Typically the pallet will weigh only about 16KG
and the pallet is of competitive price having regard to ~
its durability compared to timber pallets. Such a pallet i is considered to be economic for e~port where return of the pallet is not feasible and in any event the pallet is of valuable plastic material which can be recycled to form other products after shipment of the coil.
In another aspect the invention estends to a lid of suitable form for use on a coil supported on a pallet and the invention also estends to a method of shipment using such items~
BRIEF DESCRIPTION OF DRAWINGS
For illustrative purposes only, an embodiment of the invention will be described with reference to the .
,, , ' ~ U ~
W092/12~6 PCT/AU92/~18 accompanying drawinqs of which:-Figure l is a perspective view from above of a pallet;
Figure 2 is a side elevation of the pallet;
Figure 3 is a sectional side elevation of the pallet taken along the line A-A in Figure 4;
Figure 4 is a plan view of the pallet;
Figure 5 is an inverted plan view of the pallet;
Figure 6 is a plan view of a complimentary lid to be used with the pall~t of FiqurQs l to 5; and Figure 7 is a cross sectional vie~ taken along the line ~-B of Figure 6~
MODES FOR CARRYING OUT THE INVENTION
The pallet and lid illustrated are each integrally formed in polypropylene by low pressure injection moulding in a single operation. The pallet comprises a circular base lO, having an upstanding peripheral lip 9, an integral upstanding dowel ll and array of twelve support legs 12. The dowel is slightly tapered, has an internal cross-shaped strengthening wall 17, and is of the order of 50mm hiyh. The pallet diameter is 1590mm and thus can accommodate a wide range of coil sizes. Each of the support legs is hollow and slightly tapered and stiffened by a set of radially outwardly e~tending buttress walls 15, and a cross-shaped interior webbing 16. In the case of the buttress walls 15A reaching the periphery o~ the base, the buttress is the full depth of the support legs but the other buttress walls 15 terminate short of the bottom of the support leg.
As illustrat~d in figure 5 by arrows a forklift truck can insert its forks in any one of four directions under the pallet~ This facilitates pallet handling is an , advantage over many one-trip pallets where strip-like supports for the base are used thereby restricting access ``
of forks to two directions. Furthermore the array of legs `
provides a high degree of stability irrespective of direction of any loads or forces during transportation.
The base also includes a series of four notches 13 - -. -, ~;
`~
.
WO92/12906 2 ~ 7 ~ fl 3 ~:~ PCT/AUg2/~18 each defined by respective pairs of parallel walls 14 for accommodating strapping which can facilitate holding in place protective plastic sheeting.
Referring now to the lid of Figures 6 and 7, the lid 20 is of the same overall diametar as the pallet 10.
The lid comprises a thin plastic disc-shaped portion 21 with a downwardly extending peripheral skirt 22 interrupted at our equally spaced locations ~3, a central depending collar 24 and, e~tending from tha upper surface, a central smaller location collar 2~ and an array of location rings 26.
Tho location rings 26 are dimensioned to accomodate and locate the bases of the support legs 1~ o another pallet which may be placad on top of tha lid to ~orm a stack. Similarly the collar ~5 is dimensioned and located to cooperate with the rings and depending collar 24 of another lid so lids may be stacked and located for shipment and storage.
A series of four identical tie locators 27 are provided equally spaced around the lid, the radially outer portion of each locator being where there is an ` `
interruption 23 in the peripheral skirt 22. Each locator comprises a pair o~ spaced upstanding walls 28 e~tending substantially radially so that a tiedown strap passes between the walls and over the edge of the lid to secure the lid and a coil onto a supporting pallet. A series of transverse grooves or slots 29 are provided in the plastic material between the walls 28 thereby providing lines of weakening. When a strap-like tie is tensioned over a coil having an e~ternal diameter less than the full diameter of the lid, the plastic material can shear along one or more ``
of the grooves to tighten the tie so as to bear on the edge of the coil. `
A further feature which may be utilised is the provision of packing rings, the e~ternal dimension of the upstanding dowel 11 on the pallet being chosen to represent the smallest diameter used on a coiliny machine. If machines providing a greater coil diameter WO92/1~6 2 ~ 7 8 -~ 3 ~ PCT/AU92/~18 _ are used then packing rin~s are simply inserted to make the coil a snug fit.
The present invention can be applied in plastics material such as polypropylene which readily can be recycled when pallets become damaged. It is envisaged that a multiplicity of trips will be completed before pallet damage is likely. It is then a simple matter to reuse the material to make further lids and pallets.
Embodiments of the inv~ntion can be utilised with plastic wrapping materials so that a completely weather tight package is providQd to protect valuable products such as thin aluminium strips when in transit from the place of manuacturQ to the placa of utilisation.
Embodiments o~ the in~ention permit fast, safe and reliable handling with minimal chance of coil damage and wastage compared with conventional palletisation and delivery systems~
.
Claims (19)
[received by the International Bureau on 03 July 1992 (03.07.92);
original claims 2 cancelled; original claim 1, amended;
new claims 13, 14, 17 -19 added; claims 3 - 13 amended and renumbered as claims 2 - 12; claims 14 and 15 replaced by new claims 15 and 16 (3 pages)]
1. A pallet suitable for shipment of a coil of metal strip having a central cavity in an end of the coil which is to be supported on the pallet, the pallet comprising a base for supporting the product, support means in the form of a spaced array of legs connected to the base and shaped and dimensioned for supporting the base and providing a clearance under the base for the insertion of forks of a forklift truck from a multiplicity of directions, and a centrally located tapered dowel connected to the base and projecting upwardly therefrom for engaging within the central cavity in the coil for restraining movement of the coil in any direction in a plane parallel to the base.
2. A pallet as defined in claim 1 and shaped and dimensioned for transporting a coil of metal strip which is of the order of 1.5m diameter and 1.5m width, the dowel having a height of about 50mm.
3. A pallet as defined in any one of the preceding claims and integrally formed by moulding in a high strength, durable plastics material.
4. A pallet as defined in any one of the preceding clauses, wherein the base is of circular shape.
5. A pallet as defined in any one of the preceding claims, wherein the base has an upstanding peripheral lip.
6. A pallet as defined in any one of the preceding claims, wherein the support means comprises a multiplicity of legs in a uniformly spaced array, and wherein the array permits the forks of a forklift truck to be inserted from any one of four directions spaced at 90° to each other.
7. A pallet as defined in any one of the preceding claims, wherein the support means comprises a set of approximately 12 separate legs some which are adjacent the dowel and the others of which are adjacent the periphery of the base, each leg being of substantially circular cross-sectional shape and having a centre located on a square imaginary grid.
8. A pallet as defined in any one of the preceding claims, wherein each support leg is hollow with a cross-webbing internal wall and a plurality of external buttress walls.
9. A pallet as defined in claim 8, and wherein each buttress wall extends at approximately 45° to the lines of the imaginary square grid.
10. A protective lid for use in cooperation with a pallet as defined in any one of the preceding claims and comprising a disc-like base, upstanding location means for locating the support means of another pallet to be placed on top of the lid, peripheral depending means for engaging over the edge of a coil on which the lid is to rest and means for locating tiedown strapping whereby a coil and the lid may be secured to a supporting pallet.
11. A lid as claimed in claim 10 and wherein the locating means comprises a pair of upstanding walls extending inwardly from the edge of the lid at at least two diametrically opposed locations to provide a pair of locating means and weakening means being provided in the lid material between the walls whereby tiedown strapping bends or breaks the plastic material through the weakening means so as to bear tightly along the edge of a coil having a diameter less than the full diameter of the lid.
12. In combination of pallet as claimed in any one of claims 1 to 9 and a lid as claimed in claim 10 or claim 11.
13. A pallet as defined in any one of claims 1 to 9 when in use for transporting or storing a coil of metal strip, the coil of metal strip having a central circular cavity directly or indirectly mounted on and engaging with the dowel whereby bilateral movement is restrained.
14. A pallet as defined in claim 13 and further comprising using a lid as defined in claim 10 or claim 11.
15. A method of shipping coils of metal strip and comprising placing the coil on one axial with its cental cavity engaged on a pallet as claimed in any one of claims 1 to 10.
16. A method as claimed in 15 and further comprising applying a lid as claimed in claim 10 or claim 11 to the coil when supported on a pallet and applying tiedown strapping to secure the lid and coil on the pallet.
17. A pallet suitable for shipment of coils of metal strip or similar products and comprising a base and wherein the support means comprises a symmetric array of spaced support legs integrally formed with the base, the legs comprising a first group of legs located near the periphery of the pallet and a second group of legs located near the central region of the pallet and the array providing spaces for the insertion of the forks of a forklift truck from four different directions spaced by ninety degrees.
18. A pallet as defined in claim 17 and wherein there are eight legs in the first group of legs and four less in the second group of legs.
19. A pallet as claimed in claim 17 or claim 18 and wherein the dowel is a shallow upwardly tapering dowel of circular cross-sectional shape.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AUPK4262 | 1991-01-17 | ||
AUPK426291 | 1991-01-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
CA2078433A1 true CA2078433A1 (en) | 1992-07-18 |
Family
ID=3775185
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA 2078433 Abandoned CA2078433A1 (en) | 1991-01-17 | 1992-01-17 | Pallet |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0521126A4 (en) |
JP (1) | JPH05505377A (en) |
AU (1) | AU1184992A (en) |
CA (1) | CA2078433A1 (en) |
WO (1) | WO1992012906A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114126979A (en) * | 2019-08-21 | 2022-03-01 | Titan打包机有限责任两合公司 | Application of a packaging unit for strapping bands |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5553810A (en) * | 1994-02-23 | 1996-09-10 | The Lincoln Electric Company | Covers for welding wire reels |
JP5164113B2 (en) * | 2008-11-20 | 2013-03-13 | 三甲株式会社 | Lid set and container |
CN114561518A (en) * | 2022-01-24 | 2022-05-31 | 苏州新长光热能科技有限公司 | Wire pole coiled material annealing furnace |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2443684A (en) * | 1946-03-26 | 1948-06-22 | Lazarus David | Pallet |
US3199468A (en) * | 1962-04-23 | 1965-08-10 | Charles M Sullivan | Nestable pallets |
US3880093A (en) * | 1971-08-31 | 1975-04-29 | Schott Ind Inc | Pallet |
DE3571232D1 (en) * | 1985-11-04 | 1989-08-03 | Agfa Gevaert Nv | Light-tight film reel package |
US4838419A (en) * | 1987-03-18 | 1989-06-13 | Adolph Coors Company | Keg board |
US4809851A (en) * | 1987-04-03 | 1989-03-07 | World Container Corporation | Collapsible container |
FR2615833B1 (en) * | 1987-05-25 | 1989-09-22 | Conflandey Trefileries | PACKAGING OF CROWN GLUE STRIP AND PROCESS FOR OBTAINING SAME |
GB8714729D0 (en) * | 1987-06-24 | 1987-07-29 | Gkn Chep Ltd | Collapsible enclosure |
US4829909A (en) * | 1987-11-19 | 1989-05-16 | Mandel Ronald L | Material transporting arrangement |
GB8825943D0 (en) * | 1988-11-05 | 1988-12-14 | Merlin Mouldings Ltd | Container locating pallet |
-
1992
- 1992-01-17 JP JP92503230A patent/JPH05505377A/en active Pending
- 1992-01-17 EP EP19920903529 patent/EP0521126A4/en not_active Withdrawn
- 1992-01-17 CA CA 2078433 patent/CA2078433A1/en not_active Abandoned
- 1992-01-17 WO PCT/AU1992/000018 patent/WO1992012906A1/en not_active Application Discontinuation
- 1992-01-17 AU AU11849/92A patent/AU1184992A/en not_active Abandoned
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114126979A (en) * | 2019-08-21 | 2022-03-01 | Titan打包机有限责任两合公司 | Application of a packaging unit for strapping bands |
Also Published As
Publication number | Publication date |
---|---|
EP0521126A4 (en) | 1993-09-08 |
EP0521126A1 (en) | 1993-01-07 |
WO1992012906A1 (en) | 1992-08-06 |
AU1184992A (en) | 1992-08-27 |
JPH05505377A (en) | 1993-08-12 |
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