WO2005070773A1 - Palette formant feuille - Google Patents

Palette formant feuille Download PDF

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Publication number
WO2005070773A1
WO2005070773A1 PCT/JP2005/000675 JP2005000675W WO2005070773A1 WO 2005070773 A1 WO2005070773 A1 WO 2005070773A1 JP 2005000675 W JP2005000675 W JP 2005000675W WO 2005070773 A1 WO2005070773 A1 WO 2005070773A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
thermoplastic resin
sheet pallet
film
sheet
Prior art date
Application number
PCT/JP2005/000675
Other languages
English (en)
Japanese (ja)
Inventor
Kenichi Kobayashi
Masato Kimura
Original Assignee
Nippon Petrochemicals Co., Ltd.
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 Nippon Petrochemicals Co., Ltd. filed Critical Nippon Petrochemicals Co., Ltd.
Publication of WO2005070773A1 publication Critical patent/WO2005070773A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D19/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D19/0002—Platforms, i.e. load supporting devices without provision for handling by a forklift
    • 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
    • B65D19/0014—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 discontinuous or non-planar contact surfaces
    • B65D19/0016—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 discontinuous or non-planar contact surfaces and each contact surface having a stringer-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
    • B65D2519/00009—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
    • B65D2519/00014—Materials for the load supporting surface
    • B65D2519/00044—Combination, e.g. different elements made of different materials, laminates
    • 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
    • B65D2519/00049—Materials for the base surface
    • B65D2519/00079—Combination, e.g. different elements made of different materials, laminates
    • 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
    • B65D2519/00263—Overall construction of the pallet
    • B65D2519/00273—Overall construction of the pallet made of more than 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
    • B65D2519/00283—Overall construction of the load supporting surface
    • B65D2519/00293—Overall construction of the load supporting surface made of more than 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
    • B65D2519/00298—Overall construction of the load supporting surface skeleton type
    • 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
    • B65D2519/00323—Overall construction of the base surface made of more than 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
    • B65D2519/00333—Overall construction of the base surface shape of the contact surface of the base contact surface having a stringer-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
    • B65D2519/00313—Overall construction of the base surface
    • B65D2519/00328—Overall construction of the base surface shape of the contact surface of the base
    • B65D2519/00348—Overall construction of the base surface shape of the contact surface of the base contact surface of other form
    • 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
    • B65D2519/00353—Overall construction of the base surface skeleton type
    • 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
    • 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
    • B65D2519/00547—Connections
    • 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
    • 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 to a sheet pallet used for logistics transportation.
  • the sheet pallet has a sheet-like portion on which a load is loaded, and a tab portion extending integrally with the side force of the sheet-like portion.
  • Forklifts equipped with push-pull attachments are used to handle loads loaded on sheet pallets with forklifts. Loading and unloading of the forklift onto the platen is performed by holding the tab with a push-pull attachment and moving the push-pull attachment forward and backward on the platen.
  • the sheet pallet itself is very thin! Therefore, it is possible to save storage space while loading a load, and to store a spare sheet pallet that can be used without force.
  • When collecting pallets compared with conventional pallets, there are significant advantages in storage space and ease of transportation.
  • the sheet pallets themselves are lightweight, an empty sheet pallet can be easily transported and operated by a single worker, contributing to more efficient work in factories.
  • a conventional sheet pallet is based on a sheet formed by extrusion molding of a thermoplastic resin or the like. Then, on one or both sides, a layer made of an appropriate material has been proposed for the purpose of improving abrasion resistance or sliding a loaded load. (See, for example, JP-A-7-257576 and JP-A-2000-289995.)
  • An object of the present invention is to provide a sheet knot which is lightweight and has sufficient mechanical strength to withstand repeated use.
  • a sheet pallet of the present invention is a sheet pallet in which a tab portion integrally extends from a sheet-like portion on which a load is loaded, and is made of thermoplastic resin and extended in one direction.
  • a base material layer in which a plurality of stretched bodies are combined so that the stretching directions are orthogonal to each other; at least one surface layer provided on one surface of the base material layer and constituting a load loading surface; It is formed by a laminated sheet body including at least one back surface layer provided on the other surface.
  • the sheet pallet of the present invention is formed with a laminated sheet body in which a front surface layer and a back surface layer are laminated on both surfaces of a base material layer.
  • the base material layer is formed by combining a plurality of stretched bodies made of a thermoplastic resin and stretched in one direction so that the stretching directions are orthogonal to each other, the base layer has high tensile strength while being lightweight.
  • a sheet pallet that can sufficiently withstand repeated use can be obtained.
  • the friction coefficient between the front surface and the back surface can be arbitrarily adjusted, and a sheet pallet having excellent recyclability can be obtained.
  • At least a portion of the tab portion may be formed by folding a part of the laminated sheet body and bonding the overlapping facing surfaces to each other. As a result, the rigidity of the tab portion is increased, and the tab portion can be prevented from being bent or damaged during cargo handling.
  • FIG. 1 is a perspective view of a sheet pallet according to an embodiment of the present invention.
  • FIG. 2 is a schematic sectional view of the sheet pallet shown in FIG. 1.
  • FIG. 3 is a plan view of the reinforcing mesh layer shown in FIG. 2.
  • FIG. 4A is a partial perspective view of the uniaxially stretched split fiber film shown in FIG. 3.
  • FIG. 4B is an enlarged view of the uniaxially stretched split fiber film shown in FIG. 4A.
  • FIG. 5 is a partial perspective view of a raw film used for producing the uniaxially stretched split fiber film shown in FIG. 4, in a state where slits are formed.
  • FIG. 6A is a partial perspective view of a uniaxially stretched slit film applicable to the present invention.
  • FIG. 6B is an enlarged view of the uniaxially stretched slit film shown in FIG. 6A.
  • FIG. 7 is a plan view of a nonwoven fabric which is another example of a network structure applicable to the present invention.
  • FIG. 8 is a plan view of a woven fabric that is still another example of the network structure applicable to the present invention.
  • FIG. 9 is a perspective view of a base layer made of a nonwoven fabric made of a drawn yarn, which is applicable to the present invention.
  • FIG. 10 is a plan view of a base material layer which can be applied to the present invention and has a draw yarn force and a woven fabric force.
  • FIG. 11 is a perspective view of a base layer composed of a uniaxially stretched reticulated film and a uniaxially stretched multilayer tape applicable to the present invention.
  • FIG. 12 is a perspective view of a base layer composed of a uniaxially stretched reticulated film and a stretched yarn, applicable to the present invention.
  • FIG. 13 is a diagram illustrating an example of a method for manufacturing a sheet pallet of the present invention by an extrusion lamination method.
  • FIG. 14 is a perspective view of a sheet pallet according to another embodiment of the present invention.
  • a sheet pallet 1 having a preferably square plate-shaped sheet portion la and a tab portion lb with which one side of the sheet portion la also extends integrally.
  • the sheet portion la is a portion on which a load is loaded.
  • the tab portion lb is a portion that is gripped by the push-pull attachment mounted on the forklift when the sheet pallet 1 on which the load is loaded is handled by the forklift.
  • Fig. 1 shows an example in which the tab portion lb extends only on one side of the sheet portion la. The force from each of a plurality of sides such as two opposing sides, two adjacent sides, or three sides of the sheet portion la is shown. The tab part lb is extended.
  • a tab lb is gripped by a push-pull attachment mounted on a forklift, and in this state, the pushable attachment is pulled toward the base of the platen of the forklift. As a result, the tab lb is pulled, and the sheet pallet 1 moves while sliding on the platen. And the load is loaded Move the forklift to the desired location with the sheet pallet 1 placed on the platen, and push back the push-pull attachment. As a result, the sheet pallet 1 is lowered on the platen.
  • the sheet pallet 1 has a reinforcing mesh layer 2, a surface layer 3 stacked on one surface of the reinforcing mesh layer 2, and a sheet layer 1 stacked on the other surface of the reinforcing mesh layer 2. And a back surface layer 4.
  • the surface layer 3 is the side on which the load of the sheet pallet 1 is loaded, and the back layer 4 is the side that contacts the floor surface or the platen of a forklift during use.
  • the sheet pallet 1 also has a laminated sheet strength composed of the reinforced mesh layer 2, the surface layer 3, and the back layer 4. Therefore, the deviation between the sheet-like portion la and the tab portion lb shown in FIG. 1 has the same laminated structure.
  • the reinforcing mesh layer 2 has a small thickness and also provides a necessary strength to the sheet pallet 1 and can be made, for example, from a uniaxially stretched mesh film that is stretched in one direction and has a mesh structure.
  • FIG. 3 shows a plan view of the reinforcing mesh layer 2.
  • the reinforced network layer 2 is formed by laminating two uniaxially stretched split fiber films 21 as an example of a uniaxially stretched network film by heat fusion.
  • the uniaxially stretched split fiber film 21 has a second thermoplastic resin having a lower melting point than the first thermoplastic resin on both surfaces of a layer 21a made of the first thermoplastic resin.
  • a plurality of trunk fibers 22 extending in parallel with each other and a plurality of It is composed of branch fibers 23 connecting the fibers 22 to each other.
  • the mechanical strength of the uniaxially stretched split fiber film 21, in which the branch fibers 23 are narrower than the trunk fibers 22, is mainly provided by the trunk fibers 22.
  • the thickness of the layer 21b made of the second thermoplastic resin is 50% or less, preferably 40% or less, of the entire thickness of the uniaxially stretched split fiber film 21.
  • the thickness of the second thermoplastic resin layer 21b may be 5 ⁇ m or more. , Preferably from the range of 10-100 ⁇ m Selected.
  • a layer 2 lb of the second thermoplastic resin is laminated on both surfaces of the first layer 21 a of the thermoplastic resin by extrusion molding such as a multilayer inflation method or a multilayer T-die method.
  • the raw film 20 is stretched in the longitudinal direction (L direction), and the stretched raw film 20 is split with a splitter.
  • the raw film 20 having the slits 20a formed thereon is widened in a direction orthogonal to the direction of the slits 20a.
  • FIG. 4A a uniaxially stretched split fiber film 21 in which trunk fibers 22 are arranged in a substantially vertical direction is obtained.
  • the stretching ratio is preferably 1.1 to 15 times, more preferably 3 to 10 times.
  • the stretching ratio is less than 1.1, the mechanical strength may not be sufficient.
  • the elongation ratio exceeds 15 times, there arise problems such as the necessity of an expensive apparatus which makes it difficult to perform elongation by a normal method. Stretching is preferably performed in multiple steps to prevent stretching unevenness.
  • the thickness of the reinforcing mesh layer 2 is preferably from 100 m to 300 ⁇ m. More preferably, it is 150 m-250 ⁇ m. Since the uniaxially stretched split fiber film 21 constituting the reinforced mesh layer 2 is stretched in one direction, it has sufficient strength even with such a thickness.
  • the uniaxially stretched split fiber film 21 has a high tensile strength in the stretching direction. Therefore, two uniaxially stretched split fiber films 21 were laminated so that their stretching directions were orthogonal.
  • the sheet pallet 1 has a high tensile strength that can withstand repeated use. Since the reinforcing mesh layer 2 is a net-like structure, the weight is reduced as a result of using less material, and the sheet pallet 1 itself is easy to handle.
  • Nisseki Prif registered trademark
  • EX (T) grade name
  • T has a thickness of 0.21 mm and a longitudinal tensile strength of 284 NZ5 cm and a transverse tensile strength of 294 NZ5 cm.
  • the reinforced mesh layer 2 has a network structure
  • the reinforced mesh layer 2 alone is not suitable as the sheet pallet 1. Therefore, the sheet pallet 1 has a structure in which the front surface layer 3 and the back surface layer 4 are laminated on both surfaces of the reinforcing mesh layer 2 respectively.
  • the material for the surface layer 3 and the back layer 4 is appropriately selected in consideration of the purpose of use of the sheet pallet 1 and the required performance. Further, the surface layer 3 and the back surface layer 4 may each be a single layer or may be composed of a plurality of layers.
  • a lamination method generally used for laminating sheet materials such as an extrusion lamination method or a thermocompression bonding method, is used. It can be appropriately selected and used depending on the conditions.
  • FIG. 13 shows an example of a method of manufacturing the sheet pallet 1 in the case of the extrusion lamination method.
  • the reinforcing mesh layer 2, the surface layer 3, and the back layer 4 are wound in a roll shape.
  • the reinforcing mesh layer 2 and the back layer 4 are supplied between the first pressure roller pair 13 from different directions.
  • a first extruder 11 is provided above the junction between the reinforced mesh layer 2 and the back layer 4, and the T-die 11 a of the extruder 11 connects the first extruder 11 with the reinforced mesh layer 2 and the back layer 4.
  • a binder made of a thermoplastic resin for bonding is supplied between the reinforcing mesh layer 2 and the back layer 4.
  • the supplied binder is sandwiched between the reinforcing mesh layer 2 and the back layer 4 between the first pressure roller pair 13, and a part of the binder permeates the reinforcing mesh layer 2, whereby the reinforcing mesh layer 2 is removed. And the back surface layer 4 are laminated.
  • the obtained laminate la is further sent to the second pressure roller pair 14.
  • the surface layer 3 is supplied to face the reinforcing mesh layer 2 of the laminate la.
  • a second extruder 12 is installed above the junction of the laminate la and the surface layer 3.
  • a binder force made of a thermoplastic resin for bonding the laminate la and the surface layer 3 is supplied between the laminate la and the surface layer 3.
  • the supplied binder is sandwiched between the laminate la and the surface layer 3 between the second pressure roller pair 14, and a part of the binder penetrates into the reinforcing mesh layer 2, whereby the laminate la And the surface layer 3 are laminated.
  • a continuous laminate lb having a three-layer structure which is a material of the sheet pallet 1 (see FIG. 1), is obtained.
  • the obtained laminate lb is cut into a desired shape to obtain a sheet pallet 1 as shown in FIG.
  • the back surface layer 4 is laminated first, but the surface layer 3 may be laminated first.
  • the front surface layer 3 and the back surface layer 4 will be described.
  • the surface layer is described earlier than the reinforcing mesh layer
  • the back layer is described later
  • the order of the layers indicates the lamination order.
  • kraft paper is used for the front surface layer 3 and the back surface layer 4, respectively, and this is suitable when it is desired to give the sheet pallet 1 stiffness.
  • the LD film (low-density film) is sandwiched between the kraft paper and the reinforcing mesh layer 2 on the front surface layer 3 and the back layer 4, respectively, and is an adhesive layer (binder) between the kraft paper and the reinforcing mesh layer 2. ). If the reinforcing mesh layer 2 is made of a resin suitable for heat fusion, this adhesive layer can be omitted.
  • the kraft paper for example, kraft paper having a basis weight of 100 gZm 2 can be used.
  • the LD film for example, a low-density polyethylene film having a thickness of 10 ⁇ m to 20 ⁇ m or a linear low-density polyethylene film can be used.
  • an LD film is used for the surface layer 3 and kraft paper is used for the back layer 4.
  • the loading surface of the load has a high friction coefficient.
  • the coefficient of friction is preferably small.
  • the loading surface and the back surface of the sheet pallet 1 are made of materials having different friction coefficients so that the loading surface has a higher friction coefficient, so that the loaded load can be reduced.
  • Pussy Provided is a sheet pallet 1 that can be easily moved to a platen force and a floor force, and easily moved to the floor surface.
  • the LD film in the back layer 4 functions as an adhesive layer between the craft paper and the reinforcing mesh layer.
  • the friction coefficient between the loading surface and the back surface is made different by the combination of the LD film and the kraft paper, but in a combination in which the friction coefficient of the loading surface is higher than the friction coefficient of the back surface. If you like, you can combine them with any material! / ⁇ .
  • the back layer 4 has a configuration in which an OPP film is laminated on the reinforced mesh layer 2 via an LD film functioning as an adhesive layer, and the surface layer 3 has an LD film on top of this layer configuration.
  • the OPP film is a biaxially stretched polypropylene film, for example, a film having a thickness of 20-50 / zm can be used.
  • the coefficient of friction of the LD film is higher than the coefficient of friction of the OPP film.
  • the placed load is less likely to slip and the floor force is transferred to the platen and the platen force is applied to the floor.
  • a sheet pallet 1 is provided that can easily be moved.
  • the LD film and the reinforced mesh layer 2 are made of a polypropylene-based resin, the recyclability will be excellent.
  • the sheet pallet 1 since the OPP film is used for the front layer 3 and the back layer 4, if a polypropylene resin is used for the other layers, the sheet pallet 1 having excellent recyclability can be obtained.
  • this layer configuration has a simpler laminated structure as compared with the layer configuration example (3), the manufacturing process is simplified, and as a result, the sheet pallet 1 can be manufactured at low cost.
  • This layer configuration example is a further simplified layer configuration than the layer configuration example (4).
  • the front surface layer 3 and the back surface layer 4 may have various other combinations.
  • the surface layer 3 and the back layer 4 can each be made of a craft paper resin film, as can be seen from the above-mentioned layer configuration example, and therefore the thickness is also 10 ⁇ m-150 mm. ⁇ m It may be thin. Therefore, the thickness of the entire sheet pallet 1 is also about 250 m to 550 m. Therefore, according to the present invention, the sheet pallet 1 which is lightweight and has excellent mechanical strength is provided.
  • the front surface layer 3 and the back surface layer 4 are made of a kraft paper resin film, they are resistant to moisture and moisture, have excellent durability, and are sanitary without fungus and germs breeding. In particular, when the front surface layer 3 and the back surface layer 4 are made of a resin film, paper dust is not generated and water washing is possible.
  • FIG. 3 also shows an example in which a uniaxially stretched split fiber film 21 stretched in the longitudinal direction is laminated as a base layer of a sheet pallet in a weft manner.
  • a structure can be used.
  • the constituent materials of the surface layer and the back layer can be appropriately applied in consideration of the purpose of use of the sheet pallet, required performance, and the like.
  • FIG. 6A shows a partial perspective view of a uniaxially stretched slit film 25 which is another example of the uniaxially stretched mesh film that can be used for the reinforcing mesh layer 2.
  • the uniaxially stretched slit film 25 can be made from the same raw film force used to manufacture the uniaxially stretched split fiber film 21 shown in FIG. 4A. That is, as shown in FIG.6B, the uniaxially stretched slit film 25 has a layer 25a made of a first thermoplastic resin, and a second thermoplastic resin laminated on both surfaces and having a lower melting point than the first thermoplastic resin. And a layer 25b made of thermoplastic resin.
  • the raw film having the layer structure is split or slit in a staggered manner in the horizontal direction (the direction of the arrow T shown in FIG. 6A), stretched in the horizontal direction, and then opened in the vertical direction.
  • a uniaxially stretched slit film 25 having a network structure and high tensile strength mainly in the transverse direction can be obtained.
  • the obtained uniaxially stretched slit film 25 is laminated and thermally fused so that the stretching directions are orthogonal to each other, whereby the reinforced mesh layer 2 can be formed.
  • it is reinforced by combining with the uniaxially stretched split fiber film 21 shown in FIG. 4A and superimposing the uniaxially stretched split fiber film 21 and the uniaxially stretched slit film 25 so that the stretching directions are orthogonal to each other, and heat-sealing.
  • Reticulated layer 2 can be configured.
  • the resin constituting the uniaxially stretched split fiber film 21 and the uniaxially stretched slit film 25 includes, for example, polyolefins such as polyethylene and polypropylene, copolymers thereof, and polyolefins.
  • Polyesters such as ethylene terephthalate and polybutylene terephthalate and copolymers thereof; polyamides such as nylon 6 and nylon 66 and copolymers thereof; polymers and copolymers of polychlorinated vinyl, methacrylic acid or derivatives thereof. Coalesced, polystyrene, polysulfone, polytetrachloroethylene polycarbonate, polyurethane and the like.
  • polyolefin and its polymer polyester and its polymer, which have good splitting properties, are preferable.
  • the difference in melting point between the first thermoplastic resin and the second thermoplastic resin needs to be 5 ° C or more, preferably 10-50 ° C, for manufacturing reasons. is there.
  • a base material layer other than the above, as shown in FIGS. 7 and 8, Alternatively, a nonwoven fabric 27 or a woven fabric 29 made of a uniaxially stretched multilayer tape 28 can be used.
  • Each of the non-woven fabric 27 and the woven fabric 29 is 1.1 to 15 times, preferably 3 to 10 times the same raw film as used for manufacturing the uniaxially stretched split fiber film 21 shown in FIG. 4A. It is made of a uniaxially stretched multilayer tape 28 which is uniaxially stretched and then cut along a stretching direction at a width of 2 mm to 7 mm.
  • the cutting of the raw film may be performed before stretching.
  • the nonwoven fabric 27 shown in FIG. 7 is made by arranging a plurality of uniaxially stretched multilayer tapes 28 in parallel at regular intervals and laminating them in two layers so that the longitudinal direction of the uniaxially stretched multilayer tapes 28 is orthogonal. is there.
  • the woven fabric 29 shown in FIG. 8 is obtained by weaving the uniaxially stretched multilayer tape 28 vertically and horizontally.
  • the base layer may be made of a reinforced mesh layer made of the above-described uniaxially stretched mesh film, a woven fabric or a nonwoven fabric made of a uniaxially stretched multilayer tape, or a thermoplastic resin such as polyethylene or polypropylene. Spun drawn yarns can also be used.
  • Fig. 9 shows a nonwoven fabric substrate in which a plurality of stretched yarns 41 are arranged in parallel at regular intervals and are laminated in two layers so that the stretched direction (longitudinal direction) of the stretched yarns 41 is orthogonal. Layers are shown.
  • FIG. 10 shows a base layer having a woven fabric strength in which a plurality of drawn yarns 41 are woven so that the drawing directions are orthogonal to each other.
  • the base material layer may be constituted by appropriately combining the above-described uniaxially stretched reticulated film, uniaxially stretched multilayer tape, and stretched yarn.
  • the stretching direction of the uniaxially stretched reticulated film 51 and the plurality of uniaxially stretched multilayer tapes 28 are orthogonal.
  • the base material layer shown in FIG. 12 also has a laminate force obtained by laminating the uniaxially stretched reticulated film 51 and the plurality of stretched yarns 41 so that the stretching directions are orthogonal to each other.
  • FIG. 14 is a perspective view of a sheet pallet according to another embodiment of the present invention.
  • the basic structure of the sheet pallet 31 shown in Fig. 14 is the same as that shown in Fig. 1, and a sheet portion 3 la for loading a load and a tab portion 3 lb extending integrally from the sheet portion 3 la are provided. Having. Further, a laminated sheet body as a material of the sheet pallet 31 is configured similarly to the above-described embodiment. This embodiment is different from the above-described embodiment in that the tab portion 31b is double.
  • the rigidity of the tab portion 31b is increased. As a result, it is possible to prevent the tab portion 31b from being bent or damaged during the cargo handling operation using the forklift.
  • the double tab portion 31b can be formed, for example, as follows. First, when cutting the laminated sheet body to be the material of the sheet pallet 31, the dimensions of the portion to be the tab 31b are determined by the extension length L of the target tab portion 31b (the sheet in the direction perpendicular to the width direction). (Length from the boundary with the section 31a to the tip)). Then, a portion extended with respect to the target dimension of the tab portion 31b is folded back to the sheet portion 31a side by 180 °, and the overlapping surfaces are bonded to each other. This bonding can be performed by heat fusion and ultrasonic bonding if the surface that becomes inside when folded is a thermoplastic resin. Also, if an adhesive is used, even if the overlapping surfaces are kraft paper, they can be bonded.
  • the sheet pallet 31 can be obtained by processing both sides into a tapered shape as needed, or bending the tab portion 31b so as to be inclined upward with respect to the sheet portion 31a. .
  • the 3 lb tapered tab portion after the extended portion is folded back and bonded can be saved by cutting in advance into the shape considering the final 3 lb shape when cutting the laminated sheet body. Can be abbreviated.
  • inclining the tab 31b with respect to the seat 31a makes it easier to grasp the tab 3lb with the gripper of the push-pull attachment or to lift it up onto the platen when carrying out cargo handling work by forklift. To do so, the sheet pallet 31 is generally used.
  • FIG. 14 shows an example in which the laminated sheet body is folded back to the loading surface side of the load. However, it may be folded in the opposite direction, that is, to the back side of the sheet pallet 31. However, depending on the inclination angle of the tab part 31b with respect to the seat part 31a and the thickness of the sheet pallet 31, if the folded back is located on the back side, it may interfere with the cargo handling work with a forklift. If this is a concern, the turn-back should be on the loading surface side.
  • the entire tab portion 31b has a double force. If at least the portion requiring rigidity is double, the entire portion need not be double.
  • the portion requiring rigidity is, for example, a portion where the platen of the forklift enters during loading and unloading and is likely to be bent or damaged.
  • the tab portion 31b may be reinforced by folding the sheet pallet 31 into three or more layers within a range that does not impair the lightness of the sheet pallet 31.
  • any method can be applied, such as a method of folding the extended portion so as to wind it in, or a method of folding in a zigzag shape. .
  • a sheet pallet was manufactured according to the above-described layer configuration example (1).
  • the base layer is made of Nisseki Prif (registered trademark), a polyethylene split fiber non-woven fabric manufactured by Nisseki Plast Co., Ltd., grade I (II) (hereinafter referred to as “II Riff II ( ⁇ )”).
  • II Riff II ( ⁇ ) grade I (II) (hereinafter referred to as “II Riff II ( ⁇ )”).
  • ⁇ rif ⁇ ( ⁇ ) had a basis weight of S49 gZm 2 and a thickness of 0.21 mm.
  • Warifu EX T
  • the basis weight is laminated by an extrusion Ramineshiyon method through a low density polyethylene film m thick respectively kraft paper LOOgZm 2, resulting A sheet pallet was prepared for the physical strength of the laminated sheet.
  • a sheet pallet was manufactured according to the above-described layer configuration example (3).
  • a substrate layer as in Example 1, Perif EX (T) was used.
  • the surface layer has a two-layer structure of a biaxially stretched polypropylene film of 20 / zm thickness and a low-density polyethylene film of 15 ⁇ m thickness, and the polyethylene film is a 15 ⁇ m-thick low-density polyethylene film with the ⁇ rif EX (T) side. It was laminated on one side of Perif EX (T) via a film.
  • the back layer is a biaxially oriented polypropylene film with a thickness of 20 m, and a ⁇ rif EX (T) Laminated on the other side. These laminations were performed by an extrusion lamination method. A sheet pallet was also prepared with the laminated sheet thus obtained.
  • Sheet pallets were made by extrusion of polypropylene.
  • Sheet pallets were made of paper.
  • the thickness, the tensile strength in the longitudinal direction, and the tensile strength in the lateral direction were measured for Examples 1 and 2 and Comparative Examples 1 and 2 produced as described above. Table 1 shows the measurement results.
  • Example 1 has a higher tensile strength and a lighter weight per unit area than Comparative Examples 1 and 2. Further, Example 2 has a tensile strength equal to or higher than Comparative Examples 1 and 2, and in particular, the weight per unit area is significantly lighter and the thickness is thinner.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pallets (AREA)
  • Laminated Bodies (AREA)
  • Wrappers (AREA)

Abstract

L'invention concerne un palette formant feuille de petite épaisseur, présentant une force mécanique suffisante pour résister à un usage répété. Cette palette formant feuille (1) comprend une couche de type filet renforcé (2), une couche de surface avant (3) empilée sur une surface de celle-ci, et une couche de surface arrière (4) empilée sur une autre surface de celle-ci. La couche de type filet renforcé (2) est formée par l'empilement, l'une sur l'autre, de deux feuilles de films de fibres uniaxialement orientées étirées dans une direction, de sorte que leurs directions d'étirage soient perpendiculaires entre elles.
PCT/JP2005/000675 2004-01-21 2005-01-20 Palette formant feuille WO2005070773A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2004013066 2004-01-21
JP2004-013066 2004-01-21
JP2004-106513 2004-03-31
JP2004106513A JP2005231738A (ja) 2004-01-21 2004-03-31 シートパレット

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WO2005070773A1 true WO2005070773A1 (fr) 2005-08-04

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WO (1) WO2005070773A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108602587A (zh) * 2016-02-16 2018-09-28 阿克蒂物有限公司 转移设备和载荷转移设施
GB2612783A (en) * 2021-11-10 2023-05-17 Capsule Skateboards Ltd A board for use in skateboarding or other extreme sports and a method of manufacturing such a board

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4914665B2 (ja) * 2006-07-18 2012-04-11 株式会社明治ゴム化成 合成樹脂製パレット用滑り止め材と該滑り止め材を固着してなる合成樹脂製パレット
JP2009262939A (ja) * 2008-04-22 2009-11-12 Nisseki Plasto Co Ltd シートパレット

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Publication number Priority date Publication date Assignee Title
JPS63149823U (fr) * 1987-03-23 1988-10-03
JPH0661725U (ja) * 1993-02-03 1994-08-30 森下化学工業株式会社 シートパレット
JP2000289995A (ja) * 1999-04-01 2000-10-17 Nippon Petrochem Co Ltd シートパレット
JP2002001853A (ja) * 2000-06-23 2002-01-08 Diatex Co Ltd 布状体積層透明シート及びその製造方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63149823U (fr) * 1987-03-23 1988-10-03
JPH0661725U (ja) * 1993-02-03 1994-08-30 森下化学工業株式会社 シートパレット
JP2000289995A (ja) * 1999-04-01 2000-10-17 Nippon Petrochem Co Ltd シートパレット
JP2002001853A (ja) * 2000-06-23 2002-01-08 Diatex Co Ltd 布状体積層透明シート及びその製造方法

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108602587A (zh) * 2016-02-16 2018-09-28 阿克蒂物有限公司 转移设备和载荷转移设施
US10865057B2 (en) 2016-02-16 2020-12-15 Actiw Oy Transfer equipment and load transfer appliance
GB2612783A (en) * 2021-11-10 2023-05-17 Capsule Skateboards Ltd A board for use in skateboarding or other extreme sports and a method of manufacturing such a board
GB2612783B (en) * 2021-11-10 2024-05-29 Capsule Skateboards Ltd A board for use in skateboarding or other extreme sports and a method of manufacturing such a board

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