US20020189507A1 - Economical and ecological pallet material and method for making the same - Google Patents
Economical and ecological pallet material and method for making the same Download PDFInfo
- Publication number
- US20020189507A1 US20020189507A1 US10/167,567 US16756702A US2002189507A1 US 20020189507 A1 US20020189507 A1 US 20020189507A1 US 16756702 A US16756702 A US 16756702A US 2002189507 A1 US2002189507 A1 US 2002189507A1
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- United States
- Prior art keywords
- honeycomb
- overwrap
- pallet
- providing
- support
- 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
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- 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
- B65D19/0008—Rigid pallets without side walls the load supporting surface being made of a single element forming a continuous plane contact surface
- B65D19/001—Rigid pallets without side walls the load supporting surface being made of a single element forming a continuous plane contact surface the base surface being made of a single element
- B65D19/0012—Rigid pallets without side walls the load supporting surface being made of a single element forming a continuous plane contact surface the base surface being made of a single element forming a continuous plane contact surface
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- 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
- B65D19/0008—Rigid pallets without side walls the load supporting surface being made of a single element forming a continuous plane contact surface
- B65D19/002—Rigid pallets without side walls the load supporting surface being made of a single element forming a continuous plane contact surface the base surface being made of more than one element
- B65D19/0024—Rigid pallets without side walls the load supporting surface being made of a single element forming a continuous plane contact surface the base surface being made of more than one element forming discontinuous or non-planar contact surfaces
- B65D19/0026—Rigid pallets without side walls the load supporting surface being made of a single element forming a continuous plane contact surface the base surface being made of more than one element forming discontinuous or non-planar contact surfaces and each contact surface having a stringer-like shape
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- 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
- B65D19/0008—Rigid pallets without side walls the load supporting surface being made of a single element forming a continuous plane contact surface
- B65D19/002—Rigid pallets without side walls the load supporting surface being made of a single element forming a continuous plane contact surface the base surface being made of more than one element
- B65D19/0024—Rigid pallets without side walls the load supporting surface being made of a single element forming a continuous plane contact surface the base surface being made of more than one element forming discontinuous or non-planar contact surfaces
- B65D19/0028—Rigid pallets without side walls the load supporting surface being made of a single element forming a continuous plane contact surface the base surface being made of more than one element forming discontinuous or non-planar contact surfaces and each contact surface having a discrete foot-like shape
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- B65D2519/00303—Cell type, e.g. honeycomb
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B65D2519/00333—Overall construction of the base surface shape of the contact surface of the base contact surface having a stringer-like shape
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
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- B65D2519/00338—Overall construction of the base surface shape of the contact surface of the base contact surface having a discrete foot-like shape
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
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- B65D2519/00313—Overall construction of the base surface
- B65D2519/00358—Cell type, e.g. honeycomb
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
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- 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
- B65D2519/00363—Overall construction of the base surface grid type, e.g. perforated plate
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B65D2519/00378—Overall construction of the non-integral separating spacer whereby at least one spacer is made of two or more pieces
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
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- B65D2519/00552—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer
- B65D2519/00557—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer without separate auxiliary elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B65D2519/00562—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer without separate auxiliary elements chemical connection, e.g. glued, welded, sealed
Definitions
- the present invention relates generally to packaging articles used in storage and transportation and more particularly relates to shipping pallets.
- pallets or shipping decks, upon which goods are stacked and transported.
- a common use of a pallet is as a deck for allowing the transport and organization of goods by forklifts, including automatic and hand-operated forklifts, and other lifting and moving devices.
- Pallets are also often used for storing goods between shipments, or for display of products at wholesale and retail vendors.
- Pallets must be strong in the vertical direction to withstand heavy loads and they must be able to withstand considerable lateral force from shipping implements.
- One shipping practice that exerts considerable lateral force on a pallet is commonly known as “pinwheeling.”
- pinwheeling pallets which are misaligned after being lowered are forced into alignment by the lift forks of a forklift. Because this practice is widespread, it is important that pallets be able to withstand lateral forces.
- One pallet type currently used is a wooden pallet, constructed of wooden beams and decks. While wooden pallets are widely used, they do have significant shortcomings. For example, to dispose of a wooden pallet is a waste of resources. Further, when wooden pallets are broken, they must be repaired or destroyed. Also, wooden pallets are expensive, and to repeatedly use wooden pallets it is necessary to have a system for storing or exchanging the pallets. Another problem associated with wooden pallets is their weight. Wooden pallets tend to weigh seven or eight times that of paper pallets. Wooden pallets are also commonly manufactured with nails, and handlers of wooden pallets risk injury from nails or wood splinters. Plastic pallets are also available, but like wooden pallets they are expensive and not ecological. Plastic pallets may be twice as expensive as wooden pallets to manufacture. There exists a need for a pallet material that is lightweight, strong, and ecologically sound.
- a pallet deck is supported by pallet blocks constructed of honeycomb material.
- a pallet deck is supported by pallet blocks constructed of honeycomb cores reinforced with honeycomb overwraps.
- a pallet deck is supported by pallet runners constructed of honeycomb material.
- a pallet deck is supported by pallet runners constructed of honeycomb cores reinforced with honeycomb overwraps.
- FIG. 1 is a perspective view of a pallet according to one embodiment of the present invention.
- FIG. 2 is a perspective view of a support block according to one embodiment of the present invention.
- FIG. 3 is a cutaway view of a portion of honeycomb material used in the present invention.
- FIG. 4 is a perspective view of a pallet runner according to one embodiment of the present invention.
- FIG. 5 is a perspective view of a runner pallet construction according to one embodiment of the present invention.
- FIG. 6 is a perspective view of a segmented runner pallet construction according to one embodiment of the present invention.
- FIG. 7 is a perspective view of a supported runner pallet construction according to one embodiment of the present invention.
- FIG. 8 is a perspective view of an alternative pallet support block construction according to one embodiment of the present invention.
- FIG. 9 is a perspective view of a support block according to an alternative embodiment of the present invention.
- FIG. 10 is a perspective view of a support block having an overwrap that is slit-scored.
- FIG. 11 a is a perspective view of a support block according to an alternative embodiment of the present invention.
- FIG. 11 b is a frontal view of a stretched core of the support block of FIG. 11 a.
- FIG. 11 c is a frontal view of a folded core of the support block of FIG. 11 a.
- FIG. 1 shows a perspective view looking upwardly from the bottom of a pallet 10 of the present invention.
- the pallet 10 includes a pallet deck 12 and nine pallet support blocks 14 .
- the pallet support blocks 14 are spaced so as to provide room for a forklift or other lifting instrument to slide beneath the pallet deck 12 and to lift the pallet 10 and any goods being carried on the pallet 10 .
- the pallet support blocks 14 are arranged to allow for four-way entry for forklifts or other lifting devices.
- the pallet deck 12 may be constructed of a honeycomb material, which is described in greater detail below.
- the pallet deck 12 may be made of a corrugated material.
- the corrugated pallet deck 12 may consist of one or more layers of corrugated material, depending on the application. For example, if the pallet deck 12 is to hold light items may only need a single corrugated layer. If the items stacked on the pallet deck 12 are heavier, two or even three layers of corrugated material may be needed.
- the corrugated layers may be cross-laminated. Corrugated materials are stronger in one direction than another. A first corrugated layer is set, while a second corrugated layer is rotated 90 degrees and then laminated onto the first layer. This causes the pallet deck 12 to be strong in all four directions. It is also contemplated that the pallet deck 12 may be any combination of corrugated, honeycomb, and/or cross-laminated construction.
- FIG. 2 a pallet support block 14 is shown.
- the pallet support block 14 of FIG. 2 is constructed with a support block core 16 reinforced with a support block overwrap 18 .
- the support block core 16 has an approximately rectangular cross-section which is surrounded on four sides by the support block overwrap 18 .
- pallet support blocks 14 may be constructed with the support block core 16 and reinforced by a support block overwrap 18 on fewer sides.
- the support block overwrap 18 provides the pallet support block 14 with resistance to lateral forces encountered during storage and shipment of the pallet 10 .
- the support block overwrap 18 may be made of honeycomb material, which is described in greater detail below.
- the honeycomb material must be shaped to fit around the cross-section of the support block core 16 . This may be accomplished through the use of corner structures 20 .
- a flat sheet of honeycomb material may be slit-scored (FIG. 10), scored and crushed, or cut in a “V” shape, to provide the material with an ability to fold along desired lines. Crushed segments 22 of honeycomb material are visible in FIG. 2. Once the honeycomb material of the support block overwrap 18 has been scored, crushed, or cut and folded, the fold may be kept intact through the use of adhesive in the corner structure 20 .
- folds in the support block overwrap 18 may be kept intact through the use of adhesive along the areas where the support block overwrap 18 contacts the support block core 16 .
- the support block overwrap 18 is made of a single sheet of honeycomb material formed around the shape of the support block core 16 , an overwrap seam 24 results.
- the support block overwrap 18 may be made of a wide range of thicknesses, with over-wrap thicknesses of from about 0.25 inches to about two inches being particularly useful.
- the overwrap may further be placed so that the honeycomb structure is oriented at a variety of angles, with a preferred orientation having the strongest dimension of the overwrap perpendicular to the surfaces of the support block core 16 .
- FIG. 3 a honeycomb panel 26 is shown in a cutaway view to illustrate its structure wherein a honeycomb core 28 is sandwiched between a top face sheet 30 and a bottom face sheet 32 .
- the honeycomb core 28 comprises a plurality of abutting partition walls 34 which extend generally perpendicularly between the top and bottom face sheets 30 and 32 .
- the partition walls 34 form a plurality of abutting elongate hexagonal cells 36 having opposed bottom and top hollow-cell hexagonal faces on opposite sides of the honeycomb core 28 .
- the top face sheet 30 and the bottom face sheet 32 are respectively abutted to the top and bottom hexagonal faces of the core 28 .
- the honeycomb core 28 and the top and bottom face sheets 30 and 32 are made of a kraft paper.
- the face sheets 30 and 32 can be made of various weights of material.
- the face sheets 30 and 32 may be made of paper or linerboard ranging from 26 pound paper or linerboard to 90 pound paper or linerboard, though heavier or lighter weights may also be used.
- the face sheets 30 and 32 may be made of two different weights of paper or linerboard.
- one or both of the face sheets 30 and 32 may be made of chip board, a heavier duty paper product than 90 pound linerboard.
- Chipboard ranging from a thickness of about 8 mils to about 50 mils may be used, though thicker or thinner thicknesses of chipboard may be desirable in some applications.
- the core material may likewise be made of a variety of materials and weights. Twenty-six pound and 33 pound paper or liner board are preferred as the core material, though heavier or lighter paper or liner board may be used depending on the particular application. When honeycomb structures of the present invention are made of paper, an entire pallet 10 may be recycled with other paper products.
- the hexagonal cells 36 have an internal diameter “W” ranging from about 0.375 of an inch to about 1.2 inches. Materials other than paper, linerboard, or chip board can also be used for the face sheets 30 and 32 and the honeycomb core 28 .
- the support block 12 may be designed to withstand up to 240 lbs/block of dynamic weight and up to 1200 lbs/block of static weight, though higher weight limits may be supported.
- the support block 14 may include a pressure sensitive adhesive.
- the adhesive is used to attach the support block 14 to the pallet deck 12 or any other surface.
- the end user may omit the step, providing greater customer satisfaction with the product.
- the pressure sensitive adhesive may be a prefabricated tape, a liquid adhesive, or a hot melt adhesive. If the liquid adhesive or hot melt adhesive is used, a release paper may be provided on the adhesive.
- the liquid adhesive may be a polyvinyl acetate or ethyl vinyl acetate.
- the pallet runner 38 is another form of pallet support for use with the present invention.
- the pallet runner 38 may be an elongated version of the pallet support block 14 , or it may be constructed differently.
- the pallet runner 38 shown in FIG. 4 has two layers of honeycomb core 28 surrounded by a corrugated overwrap 40 .
- the pallet support block 14 may also be constructed in this manner.
- Alternative constructions, such as a single layer of honeycomb core 28 surrounded by a corrugated overwrap or a double layer of honeycomb core 28 surrounded by a honeycomb overwrap may be used to construct either a pallet support block 14 or a pallet runner 38 .
- the pallet runner 38 is shown in use with a pallet deck 12 in FIG. 5. In this embodiment, three pallet runners 38 are arranged to allow for a forklift to pick up the pallet 10 .
- the pallet runner 38 provides greater beam strength than the support blocks 14 , since the runner 38 stretches across the entire width of the pallet deck 12 .
- the pallet runners 38 may be designed to handle up to 30 lbs/inch in dynamic weight and up to 150 lbs/inch in static weight.
- FIG. 6 Another embodiment, illustrated in FIG. 6, combines the strength of the runner 38 and the accessibility of the support block 14 .
- the pallet deck 14 is shown being supported by a segmented runner 42 .
- the segmented runner 42 includes a plurality of single layered runners 44 that extend across the entire width of the pallet deck 12 .
- the single layered runners 44 may be made of a single layer of honeycomb as described in reference to FIG. 2 above.
- blocks 46 are attached to the single layered runners 44 .
- the blocks 46 may be constructed the same as the pallet support blocks 14 described above, or they may be constructed differently.
- both the blocks 46 and the single layered runners 44 may be surrounded by an overwrap 48 , providing for dual protection at the points where the blocks 46 and the runners 44 overlap.
- the overwrap 48 may only go around the outside of the block 46 and runner 44 structure.
- the overwrap 48 may be made of a honeycomb material, or it may be made of a corrugated material. This embodiment is useful because it combines the strength of the runner with the four way entry capability of the support blocks.
- the pallet 10 is illustrated having a plurality of runners 38 and a bottom sheet 50 .
- One end of the runner 38 is attached to the pallet deck 12 , while the other end is attached to the bottom sheet 50 .
- the bottom sheet 50 provides added support to the pallet 10 .
- the bottom sheet 50 provides further stability to the runners 38 , making the overall pallet 10 more sturdy.
- the bottom sheet 50 may be made of a honeycomb material as shown in FIG. 3, or it may be made of a corrugated material or paper or liner board.
- the pallet block 52 includes a core 54 and an overwrap 56 .
- the core 54 is made of two layers 58 , 60 of honeycomb material.
- the overwrap 56 may be made of a honeycomb material or it may be made of a corrugated material.
- the core 54 may be provided with face sheets covering the honeycomb inside of the core 54 .
- the covering may be entirely made of chipboard or linerboard.
- the support block 70 includes an overwrap 72 , in place of the honeycomb core of the embodiments described in reference to FIGS. 2 and 8.
- the overwrap 72 may be wrapped numerous times to add to the strength of the support block 70 .
- the overwrap 72 may be thicker than the overwraps 18 , 56 described in FIGS. 2 and 8, to further strengthen the support block 70 .
- the support block 80 includes a honeycomb core 82 and an overwrap 84 .
- the honeycomb core 82 is made of a slit and reverse-slit scored and folded material.
- the core 82 includes a plurality of slits 86 and reverse slits 88 .
- the slits 86 and reverse slits 88 allow the honeycomb core 82 to be folded as is illustrated in FIG. 11 c.
Abstract
Description
- This application claims the benefit of priority of U.S. Provisional Patent Application Serial No. 60/297,852, filed Jun. 13, 2001.
- The present invention relates generally to packaging articles used in storage and transportation and more particularly relates to shipping pallets.
- The efficient shipping of articles in national and international industries relies to a great extent on the use of pallets, or shipping decks, upon which goods are stacked and transported. A common use of a pallet is as a deck for allowing the transport and organization of goods by forklifts, including automatic and hand-operated forklifts, and other lifting and moving devices. Pallets are also often used for storing goods between shipments, or for display of products at wholesale and retail vendors.
- Pallets must be strong in the vertical direction to withstand heavy loads and they must be able to withstand considerable lateral force from shipping implements. One shipping practice that exerts considerable lateral force on a pallet is commonly known as “pinwheeling.” In pinwheeling, pallets which are misaligned after being lowered are forced into alignment by the lift forks of a forklift. Because this practice is widespread, it is important that pallets be able to withstand lateral forces.
- One pallet type currently used is a wooden pallet, constructed of wooden beams and decks. While wooden pallets are widely used, they do have significant shortcomings. For example, to dispose of a wooden pallet is a waste of resources. Further, when wooden pallets are broken, they must be repaired or destroyed. Also, wooden pallets are expensive, and to repeatedly use wooden pallets it is necessary to have a system for storing or exchanging the pallets. Another problem associated with wooden pallets is their weight. Wooden pallets tend to weigh seven or eight times that of paper pallets. Wooden pallets are also commonly manufactured with nails, and handlers of wooden pallets risk injury from nails or wood splinters. Plastic pallets are also available, but like wooden pallets they are expensive and not ecological. Plastic pallets may be twice as expensive as wooden pallets to manufacture. There exists a need for a pallet material that is lightweight, strong, and ecologically sound.
- These problems and others are overcome by the pallets and pallet materials of the present invention.
- According to one embodiment of the present invention, a pallet deck is supported by pallet blocks constructed of honeycomb material.
- According to another embodiment of the present invention, a pallet deck is supported by pallet blocks constructed of honeycomb cores reinforced with honeycomb overwraps.
- According to another embodiment of the present invention, a pallet deck is supported by pallet runners constructed of honeycomb material.
- According to another embodiment of the present invention, a pallet deck is supported by pallet runners constructed of honeycomb cores reinforced with honeycomb overwraps.
- The above summary of the present invention is not intended to represent each embodiment, or every aspect of the present invention. This is the purpose of the figures and detailed description which follow.
- Other aspects and advantages of the invention will become apparent upon reading the following detailed description and upon reference to the drawings.
- FIG. 1 is a perspective view of a pallet according to one embodiment of the present invention;
- FIG. 2 is a perspective view of a support block according to one embodiment of the present invention;
- FIG. 3 is a cutaway view of a portion of honeycomb material used in the present invention;
- FIG. 4 is a perspective view of a pallet runner according to one embodiment of the present invention;
- FIG. 5 is a perspective view of a runner pallet construction according to one embodiment of the present invention;
- FIG. 6 is a perspective view of a segmented runner pallet construction according to one embodiment of the present invention,
- FIG. 7 is a perspective view of a supported runner pallet construction according to one embodiment of the present invention; and
- FIG. 8 is a perspective view of an alternative pallet support block construction according to one embodiment of the present invention.
- FIG. 9 is a perspective view of a support block according to an alternative embodiment of the present invention.
- FIG. 10 is a perspective view of a support block having an overwrap that is slit-scored.
- FIG. 11a is a perspective view of a support block according to an alternative embodiment of the present invention.
- FIG. 11b is a frontal view of a stretched core of the support block of FIG. 11a.
- FIG. 11c is a frontal view of a folded core of the support block of FIG. 11a.
- While the invention is susceptible to various modifications and alternative forms, specific embodiments have been shown by way of example in the drawings and will be described in detail herein. However, it should be understood that the invention is not intended to be limited to the particular forms disclosed. Rather, the intent is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
- FIG. 1 shows a perspective view looking upwardly from the bottom of a
pallet 10 of the present invention. Thepallet 10 includes apallet deck 12 and ninepallet support blocks 14. Thepallet support blocks 14 are spaced so as to provide room for a forklift or other lifting instrument to slide beneath thepallet deck 12 and to lift thepallet 10 and any goods being carried on thepallet 10. Thepallet support blocks 14 are arranged to allow for four-way entry for forklifts or other lifting devices. - The
pallet deck 12 may be constructed of a honeycomb material, which is described in greater detail below. Alternatively, thepallet deck 12 may be made of a corrugated material. Thecorrugated pallet deck 12 may consist of one or more layers of corrugated material, depending on the application. For example, if thepallet deck 12 is to hold light items may only need a single corrugated layer. If the items stacked on thepallet deck 12 are heavier, two or even three layers of corrugated material may be needed. Alternatively, the corrugated layers may be cross-laminated. Corrugated materials are stronger in one direction than another. A first corrugated layer is set, while a second corrugated layer is rotated 90 degrees and then laminated onto the first layer. This causes thepallet deck 12 to be strong in all four directions. It is also contemplated that thepallet deck 12 may be any combination of corrugated, honeycomb, and/or cross-laminated construction. - Turning now to FIG. 2, a
pallet support block 14 is shown. Thepallet support block 14 of FIG. 2 is constructed with asupport block core 16 reinforced with asupport block overwrap 18. As shown in FIG. 2, thesupport block core 16 has an approximately rectangular cross-section which is surrounded on four sides by thesupport block overwrap 18. Alternatively, pallet support blocks 14 may be constructed with thesupport block core 16 and reinforced by asupport block overwrap 18 on fewer sides. Thesupport block overwrap 18 provides thepallet support block 14 with resistance to lateral forces encountered during storage and shipment of thepallet 10. - The
support block overwrap 18 may be made of honeycomb material, which is described in greater detail below. When thesupport block overwrap 18 is made of honeycomb material, the honeycomb material must be shaped to fit around the cross-section of thesupport block core 16. This may be accomplished through the use ofcorner structures 20. To make thecorner structures 20, a flat sheet of honeycomb material may be slit-scored (FIG. 10), scored and crushed, or cut in a “V” shape, to provide the material with an ability to fold along desired lines.Crushed segments 22 of honeycomb material are visible in FIG. 2. Once the honeycomb material of thesupport block overwrap 18 has been scored, crushed, or cut and folded, the fold may be kept intact through the use of adhesive in thecorner structure 20. Alternatively or additionally, folds in thesupport block overwrap 18 may be kept intact through the use of adhesive along the areas where thesupport block overwrap 18 contacts thesupport block core 16. When thesupport block overwrap 18 is made of a single sheet of honeycomb material formed around the shape of thesupport block core 16, anoverwrap seam 24 results. - The
support block overwrap 18 may be made of a wide range of thicknesses, with over-wrap thicknesses of from about 0.25 inches to about two inches being particularly useful. The overwrap may further be placed so that the honeycomb structure is oriented at a variety of angles, with a preferred orientation having the strongest dimension of the overwrap perpendicular to the surfaces of thesupport block core 16. - Turning now to FIG. 3, a
honeycomb panel 26 is shown in a cutaway view to illustrate its structure wherein a honeycomb core 28 is sandwiched between atop face sheet 30 and abottom face sheet 32. The honeycomb core 28 comprises a plurality of abuttingpartition walls 34 which extend generally perpendicularly between the top andbottom face sheets partition walls 34 form a plurality of abutting elongatehexagonal cells 36 having opposed bottom and top hollow-cell hexagonal faces on opposite sides of the honeycomb core 28. Thetop face sheet 30 and thebottom face sheet 32 are respectively abutted to the top and bottom hexagonal faces of the core 28. - Preferably, the honeycomb core28 and the top and
bottom face sheets face sheets face sheets face sheets face sheets entire pallet 10 may be recycled with other paper products. - The
hexagonal cells 36 have an internal diameter “W” ranging from about 0.375 of an inch to about 1.2 inches. Materials other than paper, linerboard, or chip board can also be used for theface sheets support block 12 may be designed to withstand up to 240 lbs/block of dynamic weight and up to 1200 lbs/block of static weight, though higher weight limits may be supported. - In some embodiments, the
support block 14 may include a pressure sensitive adhesive. The adhesive is used to attach thesupport block 14 to thepallet deck 12 or any other surface. By providing adhesive on thesupport block 14, the end user may omit the step, providing greater customer satisfaction with the product. - The pressure sensitive adhesive may be a prefabricated tape, a liquid adhesive, or a hot melt adhesive. If the liquid adhesive or hot melt adhesive is used, a release paper may be provided on the adhesive. The liquid adhesive may be a polyvinyl acetate or ethyl vinyl acetate.
- Turning now to FIG. 4, a
pallet runner 38 is shown. Thepallet runner 38 is another form of pallet support for use with the present invention. Thepallet runner 38 may be an elongated version of thepallet support block 14, or it may be constructed differently. Thepallet runner 38 shown in FIG. 4 has two layers of honeycomb core 28 surrounded by acorrugated overwrap 40. Thepallet support block 14 may also be constructed in this manner. Alternative constructions, such as a single layer of honeycomb core 28 surrounded by a corrugated overwrap or a double layer of honeycomb core 28 surrounded by a honeycomb overwrap may be used to construct either apallet support block 14 or apallet runner 38. - The
pallet runner 38 is shown in use with apallet deck 12 in FIG. 5. In this embodiment, threepallet runners 38 are arranged to allow for a forklift to pick up thepallet 10. Thepallet runner 38 provides greater beam strength than the support blocks 14, since therunner 38 stretches across the entire width of thepallet deck 12. Thepallet runners 38 may be designed to handle up to 30 lbs/inch in dynamic weight and up to 150 lbs/inch in static weight. - Another embodiment, illustrated in FIG. 6, combines the strength of the
runner 38 and the accessibility of thesupport block 14. In this embodiment, thepallet deck 14 is shown being supported by asegmented runner 42. Thesegmented runner 42 includes a plurality of singlelayered runners 44 that extend across the entire width of thepallet deck 12. The singlelayered runners 44 may be made of a single layer of honeycomb as described in reference to FIG. 2 above. - Throughout the length of the single
layered runners 44, blocks 46 are attached to the singlelayered runners 44. The blocks 46 may be constructed the same as the pallet support blocks 14 described above, or they may be constructed differently. In some embodiments, both the blocks 46 and the singlelayered runners 44 may be surrounded by anoverwrap 48, providing for dual protection at the points where the blocks 46 and therunners 44 overlap. Alternatively, theoverwrap 48 may only go around the outside of the block 46 andrunner 44 structure. In some embodiments, theoverwrap 48 may be made of a honeycomb material, or it may be made of a corrugated material. This embodiment is useful because it combines the strength of the runner with the four way entry capability of the support blocks. - Turning now to FIG. 7, the
pallet 10 is illustrated having a plurality ofrunners 38 and abottom sheet 50. One end of therunner 38 is attached to thepallet deck 12, while the other end is attached to thebottom sheet 50. Thebottom sheet 50 provides added support to thepallet 10. Thebottom sheet 50 provides further stability to therunners 38, making theoverall pallet 10 more sturdy. Thebottom sheet 50 may be made of a honeycomb material as shown in FIG. 3, or it may be made of a corrugated material or paper or liner board. - Turning now to FIG. 8, a
pallet block 52 according to another embodiment of the invention is illustrated. In this embodiment, thepallet block 52 includes acore 54 and anoverwrap 56. Thecore 54 is made of twolayers overwrap 56 may be made of a honeycomb material or it may be made of a corrugated material. - In some alternative embodiments, the
core 54 may be provided with face sheets covering the honeycomb inside of thecore 54. The covering may be entirely made of chipboard or linerboard. - Turning now to FIG. 9, a
support block 70 according to an alternative embodiment of the present invention will be described. Thesupport block 70 includes anoverwrap 72, in place of the honeycomb core of the embodiments described in reference to FIGS. 2 and 8. Theoverwrap 72 may be wrapped numerous times to add to the strength of thesupport block 70. Also, theoverwrap 72 may be thicker than theoverwraps support block 70. - Turning now to FIGS. 11a-c, a support block 80 according to an alternative embodiment of the present invention will be described. The support block 80 includes a
honeycomb core 82 and anoverwrap 84. In this embodiment, thehoneycomb core 82 is made of a slit and reverse-slit scored and folded material. As shown in FIG. 11b, thecore 82 includes a plurality ofslits 86 and reverse slits 88. Theslits 86 andreverse slits 88 allow thehoneycomb core 82 to be folded as is illustrated in FIG. 11c. - While the present invention has been described with reference to one or more particular embodiments, those skilled in the art will recognize that many changes may be made thereto without departing from the spirit and scope of the present invention. Each of these embodiments and obvious variations thereof is contemplated as falling within the spirit and scope of the claimed invention, which is set forth in the following claims.
Claims (27)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US10/167,567 US20020189507A1 (en) | 2001-06-13 | 2002-06-12 | Economical and ecological pallet material and method for making the same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US29785201P | 2001-06-13 | 2001-06-13 | |
US10/167,567 US20020189507A1 (en) | 2001-06-13 | 2002-06-12 | Economical and ecological pallet material and method for making the same |
Publications (1)
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US20020189507A1 true US20020189507A1 (en) | 2002-12-19 |
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US10/167,567 Abandoned US20020189507A1 (en) | 2001-06-13 | 2002-06-12 | Economical and ecological pallet material and method for making the same |
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US (1) | US20020189507A1 (en) |
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