[go: up one dir, main page]

WO2010068971A1 - Palette en polyéthylène téréphtalate (pet) à orientation biaxiale - Google Patents

Palette en polyéthylène téréphtalate (pet) à orientation biaxiale Download PDF

Info

Publication number
WO2010068971A1
WO2010068971A1 PCT/AU2009/001618 AU2009001618W WO2010068971A1 WO 2010068971 A1 WO2010068971 A1 WO 2010068971A1 AU 2009001618 W AU2009001618 W AU 2009001618W WO 2010068971 A1 WO2010068971 A1 WO 2010068971A1
Authority
WO
WIPO (PCT)
Prior art keywords
pallet
upper portion
lower portion
pet
mould
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.)
Ceased
Application number
PCT/AU2009/001618
Other languages
English (en)
Inventor
John Arthur Cummins
Greame John Warner
John Kenneth Warner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DYMON PALLETS Pty Ltd
Original Assignee
DYMON PALLETS Pty 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
Priority claimed from AU2008906520A external-priority patent/AU2008906520A0/en
Application filed by DYMON PALLETS Pty Ltd filed Critical DYMON PALLETS Pty Ltd
Publication of WO2010068971A1 publication Critical patent/WO2010068971A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • 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
    • B65D19/0038—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 stringer-like shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/266—Auxiliary operations after the thermoforming operation
    • B29C51/267—Two sheets being thermoformed in separate mould parts and joined together while still in the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5346—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/61—Joining from or joining on the inside
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/737—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined
    • B29C66/7371—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined oriented or heat-shrinkable
    • B29C66/73711—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined oriented or heat-shrinkable oriented
    • B29C66/73713—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined oriented or heat-shrinkable oriented bi-axially or multi-axially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/46—Component parts, details or accessories; Auxiliary operations characterised by using particular environment or blow fluids other than air
    • B29C2049/4602—Blowing fluids
    • B29C2049/465—Blowing fluids being incompressible
    • B29C2049/4652—Blowing fluids being incompressible hot liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/46—Component parts, details or accessories; Auxiliary operations characterised by using particular environment or blow fluids other than air
    • B29C2049/4602—Blowing fluids
    • B29C2049/465—Blowing fluids being incompressible
    • B29C2049/4655—Blowing fluids being incompressible water
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/07—Preforms or parisons characterised by their configuration
    • B29C2949/0715—Preforms or parisons characterised by their configuration the preform having one end closed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/06—Injection blow-moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/04—Dielectric heating, e.g. high-frequency welding, i.e. radio frequency welding of plastic materials having dielectric properties, e.g. PVC
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/38—Impulse heating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B29C65/562—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits using extra joining elements, i.e. which are not integral with the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/005—Oriented
    • B29K2995/0053—Oriented bi-axially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7178—Pallets
    • 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
    • B65D2519/00258—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
    • B65D2519/00313—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
    • B65D2519/00333—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
    • B65D2519/00547—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
    • 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
    • B65D2519/00572—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer with separate auxiliary element, e.g. screws, nails, bayonets
    • 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
    • B65D2519/00736—Details
    • B65D2519/008—Drainage means

Definitions

  • the present invention relates to a pallet.
  • the pallet may be used as a transport pallet, shipping pallet or storage pallet.
  • Pallets are widely used in the storage and transport of goods.
  • the vast majority of pallets used around the world are made from wood.
  • the pallets typically include crossbeams having planks of wood nailed or stapled to the crossbeams to form a platform at the top of the pallet.
  • a number of planks of wood are also typically nailed or stapled to the lower edges of the crossbeams to provide enhanced strength to the pallet.
  • the tines of a forklift or other lifting apparatus can be inserted into the spaces between the crossbeams to raise and lower the pallets.
  • Items to be stored or transported are placed on the upper platform of the pallet and are held in place and using a wrapping material (such as a shrink wrap plastic), tie straps, tie wires or the like.
  • a wrapping material such as a shrink wrap plastic
  • the process involved in manufacturing such pallets includes collecting, sorting, cleaning and melt extrusion of the plastic waste and moulding on a large injection moulding machine.
  • the die used on the injection moulding machine is complicated and expensive.
  • Plastic pallets are made in many designs and weights with major variation in product weight, cost and performance. Pallets with load-bearing properties comparable to hardwood pallets are heavy and expensive.
  • PET Polyethylene terephthalate polymer
  • PET is a widely used plastic material. It is a very strong, cheap and light stable thermoplastic polyester material.
  • the major use made of PET is in the manufacture of bottles and containers, such as soft drink bottles. PET is especially suitable for use in soft drink bottles because it is clear and strong. Indeed, biaxially oriented PET has sufficient strength to withstand the significant internal forces exerted on a closed bottle by a carbonated beverage.
  • the high chemical and mechanical properties of PET combined with its high clarity and light stability, low cost and high production rates make PET the preferred material for many packaging applications.
  • PET waste material
  • recycling of PET typically involves collecting the waste material, sorting the waste material, removing contaminants (such as paper labels and non-PET plastics) from the PET, washing the PET, shredding the PET, drying the PET flake to an extremely low moisture content, melting the flake PET and forming the PET into clean recycled flake or granules.
  • contaminants such as paper labels and non-PET plastics
  • PET flake or granules are melted and moulded into a pre-form.
  • the preformed is solidified and placed in a blow moulding mould.
  • the preform is heated to a temperature between the glass transition temperature of the PET and the melting point of the PET. Typically, this temperature is around 95°C.
  • the heated preform is then blow moulded to form the shape of the bottle. Blow moulding in this fashion results in the PET being biaxially oriented in the final bottle, thereby significantly increasing the strength of the bottle. It is noted that the strength of biaxially oriented PET bottles is significantly higher than the strength of PET bottles that have not been biaxially oriented.
  • the extruded plastic is mechanically stretched up to 10 times its length, which aligns the molecules along a single axis and give the products very strong mechanical properties.
  • the present invention provides a biaxially oriented PET pallet.
  • the present invention provides a pallet, characterised in that the pallet is made from PET and the PET is biaxially oriented during manufacture of the pallet.
  • the PET in the pallet of the present invention is biaxially oriented. This results in the pallet having significantly enhanced strength when compared with prior art PET pallets of the same weight.
  • the present invention allows pallets to be made from a lesser amount of PET in each pallet, thereby reducing the weight of the PET pallets when compared to prior art PET pallets.
  • the PET becomes biaxially oriented during manufacture of the pallet.
  • the PET becomes biaxially oriented during a blow moulding step in the manufacturing process for manufacturing the pallet.
  • the PET becomes biaxially oriented during a stretch blow moulding step in the manufacturing process for manufacturing the pallet.
  • the PET used in the manufacture of the pallet in accordance with the present invention may comprise virgin PET.
  • recycled PET may be used.
  • a mixture of virgin PET and recycled PET may be used.
  • the pallet of the present invention comprises an upper portion and a lower portion, the upper portion and the lower portion being joined together.
  • the upper portion and the lower portion are joined together using a plastics welding step, such as ultrasonic welding, high frequency welding, impulse welding or heat welding.
  • the upper portion and the lower portion may be joined together using a suitable adhesive.
  • the upper portion and the lower portion may be joined together using fasteners, such as nails, screws, bolts, clips, or the like.
  • the upper portion may have one or more reinforcing members and the lower portion may have one or more reinforcing members.
  • the one or more reinforcing members of the upper portion may contact one or more of the one or more reinforcing members of the lower portion. In this manner, forces may be transmitted from the upper portion to the lower portion via the contacting reinforcing members, to thereby strengthen the completed pallet.
  • the upper portion includes one or more reinforcing ribs and the lower portion includes one or more reinforcing ribs, with the reinforcing ribs of the upper portion extending in a different direction to the reinforcing ribs of the lower portion in the completed pallet.
  • the reinforcing ribs of the upper portion may extend generally perpendicularly to the reinforcing ribs of the lower portion. This results in each reinforcing rib of the upper portion contacting a plurality of reinforcing ribs of the lower portion (and vice versa). This strengthens the pallet over a large extent of the surface area of the pallet.
  • the reinforcing ribs of the upper portion may be collinear with or coincident with the reinforcing ribs of the lower portion.
  • the upper portion may define an upper support surface.
  • the upper support surface may comprise a plurality of slats.
  • the reinforcing ribs may extend downwardly from respective edges of each slat.
  • the support surface may have a plurality of holes formed therein.
  • the plurality of holes may be formed by stamping, punching or drilling.
  • the support surface may have holes formed therein during moulding of the support surface. The holes minimise the material included in the pallet, thereby reducing weight of the pallet.
  • the lower portion may define a base.
  • the base may include apertures, spaces or openings through which the tines of a forklift may be inserted in order to lift or lower the pallet.
  • the base may also include ground engaging portions that contact the ground when the base is placed on the ground.
  • the ground engaging portions may extend along at least two opposed sides of the lower portion of the pallet.
  • the ground engaging portions may include a central ground engaging portion.
  • the pallet may be made as a single piece moulding.
  • the present invention provides a method for manufacturing a biaxially oriented PET pallet, the method comprising the steps of providing a PET preform, and blow moulding or stretch blow moulding the PET preform to form the pallet.
  • the present invention provides a method for manufacturing a biaxially oriented PET pallet, the method comprising the steps of:
  • the mould including a first region and a second region, the first region defining a mould region for producing an upper portion of the pallet, the second region defining a mould region for producing a lower portion of the pallet, - blow moulding or stretch blow moulding the preform in the mould to produce a moulded article including an upper portion of the pallet and a lower portion of the pallet, said moulding step causing the PET to become biaxially oriented,
  • the blow moulding or stretch blow moulding step comprises a moulding step as described in international patent application number PCT/AU2006/000339 (WO 2006/096916), filed on 15 March 2006, the entire contents of which are herein incorporated by cross reference.
  • the mould includes a mould cavity having four sides, each side defining an upper portion of the pallet or a lower portion of the pallet.
  • the moulded article will have at least one side formed as an upper portion of the pallet and at least another side formed as a lower portion of the pallet.
  • the mould in another embodiment, includes a mould cavity having four sides, each side defining an upper portion of the pallet and a lower portion of the pallet.
  • the moulded article will have four sides, with each side forming an upper portion of the pallet and a lower portion of the pallet.
  • the upper portion and the lower portion are separated from the moulded article once the moulded article has been removed from the mould. For example, the upper portion and the lower portion may be cut away from the moulded article.
  • the upper portion and the lower portion may then be positioned relative to each other in the correct juxtaposition (for example, the upper portion may be positioned such that it rests on the lower portion in the correct orientation to form a completed pallet) and the upper portion and lower portion may then be joined together to form the completed pallet.
  • the upper portion and the lower portion may be joined by any suitable joining technique known to the person skilled in the art. Examples include plastics welding, such as ultrasonic welding, high frequency welding, impulse welding or heat welding, use of suitable adhesives, or use of fasteners (such as nails, screws, bolts, clips or the like).
  • two separate moulds may be provided, with one mould including a mould region for producing an upper portion of the pallet and another mould including a mould region for producing a lower portion of the pallet.
  • two separate moulded articles will be formed, one moulded article defining at least one upper portion of the pallet and the other moulded article defining at least one lower portion of the pallet.
  • the method will further include the steps of separating an upper portion from a moulded article, separating a lower portion from a moulded article, positioning the upper portion relative to the lower portion and joining the upper portion and the lower portion to form a completed pallet.
  • the present invention provides a method for manufacturing a biaxially oriented PET pallet, the method comprising the steps of:
  • the method of the present invention enables the production of a pallet for storage, transport or shipping, to be manufactured from PET, with the pallet being produced by this method having biaxially oriented PET.
  • the method of the present invention may further comprise the steps of forming one or more holes in the upper portion of the pallet.
  • the one or more holes may be formed by stamping, punching, or drilling.
  • the moulded article or articles produced in the method of the present invention may include one or more regions that do not become incorporated into the completed pallet. These one or more regions may be separated from the portions that form part of the pallet and sent to PET recycle or recovery in order to reuse the material contained in those one or more regions.
  • Figure 1 shows a schematic flowsheet of the manufacture and life cycle of a PET pallet in accordance with an embodiment of the present invention
  • Figure 2 shows a perspective view of a PET pallet in accordance with one embodiment of the present invention
  • Figure 3 shows a perspective view of a lower portion of a PET pallet in accordance with one embodiment of the present invention
  • Figure 4 shows a side view of the lower portion of a PET pallet as shown in figure 3;
  • Figure 5 shows a front view of the lower portion of a PT pallet as shown in figure 3;
  • Figure 6 shows an underneath view of the lower portion of a PET pallet as shown in figure 3. In figure 6, hidden details are shown in dashed outline;
  • Figure 7 shows a perspective view of an upper portion of a PET pallet in accordance with an embodiment of the present invention
  • Figure 8 shows a top view of the upper portion of a PET pallet as shown in figure 7. In figure 8, hidden details are shown in dashed outline;
  • Figure 9 is a top view of a completed pallet incorporating the upper portion shown in figure 7 and the lower portion shown in figure 3. In figure 9, hidden details are shown in dashed outline;
  • Figure 10 shows a perspective view of a mould suitable for use in one embodiment of a method for manufacturing a PET pallet in accordance with the present invention
  • Figure 11 shows a perspective view from below of the mould shown in figure 10;
  • Figure 12 shows a perspective view of one side of the mould shown in figures 10 and 11.
  • the view shown in figure 12 shows the outside of one side of the mould;
  • Figure 13 shows a perspective view, taken from the inside, of the side of the mould shown in figure 12;
  • Figure 14 shows a perspective view of a PET pallet in accordance with another embodiment of the present invention.
  • Figure 15 shows a perspective view of an upper portion of a PET pallet suitable for use in the embodiment shown in figure 14;
  • Figure 16 shows an underneath view of a lower portion of a PET pallet suitable for use in the embodiment shown in figure 14.
  • FIG 1 shows a schematic flowsheet for the life cycle of a PET pallet, including the manufacturing steps involved in making the PET pallet.
  • post consumer PET waste 10 including PET bottles 12 are received and subjected to initial sorting and granulating 14.
  • Sorting and granulating 14 may be in accordance with known PET recycling steps.
  • PET flake 16 is produced.
  • the PET flake 16 is subjected to cleaning and drying 18. Again, cleaning and drying steps 18 may be in accordance with known PET recycling treatments.
  • the cleaned and dried PET flake 20 is then subjected to melting and filtering 22 to produce a clean PET melt 24.
  • the clean PET melt 24 is then injection moulded in injection moulding step 26 to form a PET preform 28.
  • the PET preform may take the form of a large test-tube shaped preform.
  • the PET preform is then subjected to stretch blow moulding step 30 to produce a moulded article 32 that includes an upper portion of the pallet and a lower portion of the pallet.
  • the stretch blow moulding step results in the PET becoming biaxially oriented in the moulded article.
  • the moulded article is then trimmed to remove the upper portion and the lower portion therefrom and the upper portion and lower portion are assembled together (see step 34). This results in an assembled PET pallet 36.
  • the pallet may be used for many years, as shown schematically at 38. When the pallet is at the end of its useful life, it is returned to post consumer PET waste 10, where it may be subsequently recycled and then again formed into a new PET pallet.
  • FIG. 2 shows a perspective view of a biaxially oriented PET pallet in accordance with one embodiment of the present invention.
  • the pallet 100 shown in figure 2 includes an upper support surface 102 and a base 104.
  • the upper support surface 102 includes a plurality of spaced apart slats, some of which are numbered at 106, 108 and 110. Each of the slats are connected to each other, as will be described in more detail hereunder
  • the base 104 includes side members 112 and 114 and central member 116. Spaces 118, 120 are formed between the side members 112, 114 and the central member 116.
  • Spaces 118, 120 extend along the length of pallet 100 and enable the tines of a forklift to be inserted therein in order to enable the pallet to be raised and lowered by a forklift.
  • spaces 122 and 124 are formed in the respective side members and extend across the width of the pallet to enable the pallet to be located on standard pallet racking.
  • the pallet shown in figure 2 is made from an upper portion (which defines the upper support surface 102 in the completed pallet) and a lower portion (which defines the base in the completed pallet).
  • Figures 3 to 6 show various views of the lower portion of the pallet.
  • the lower portion 130 defines the side portions 112, 114, as well as the central portion 116.
  • the lower portion 130 also includes an upstanding wall, shown by reference numerals 132, 134, 136 and 138. The upstanding wall assists in positioning the upper portion of the pallet relative to the lower portion 130.
  • the upstanding wall facilitates joining of the lower portion 130 to the upper portion to form the completed pallet.
  • the lower portion 130 shown in figures 3 to 6 includes a plurality of ribs extending along the length of the lower portion.
  • side member 112 includes a ribl40.
  • Rib 140 is positioned between the outside wall of side member 112 and inner wall 141 of side member 112.
  • side portion 114 includes a rib 142 that is positioned between an outer wall of side member 114 and the inner wall of side member 114.
  • Central portion 116 includes 5 ribs in the embodiment shown in figure 3, with some of those ribs being shown by reference numerals 144 and 145. For clarity, not all of the reinforcing ribs in the central portion 116 have been numbered.
  • the space 118 of the lower portion 130 is defined by respective side walls 150, 151 and upper wall or roof 152.
  • the space 120 is defined by respective side walls 153, 154 and upper wall or roof 155.
  • the upper walls 152, 155 are at a position that is essentially the same level as the upper surface of the reinforcing ribs 140, 142, 144, 145.
  • the lower portion 130 is formed as a relatively thin-walled member. Large regions of solid PET material are avoided.
  • central section 116 may be described as being an essentially hollow section having end walls and side walls 151, 153, together with the reinforcing ribs (some of which are shown at 144, 145).
  • the reinforcing ribs typically extend upwardly from the lower surface of the lower portion 130 (as best shown in figure 5).
  • the use of generally vertical wall sections and generally vertical reinforcing ribs in the lower portion 130 result in the lower portion 130 being a light weight member having relatively good strength properties.
  • the lower portion 130 includes end walls 160, 162.
  • Figures 7 and 8 show various views of the upper portion 170 of the pallet 100 shown in figure 2.
  • the upper portion 170 includes the upper support surface 102 that is defined by the plurality of slats, some of which are shown by reference numerals 106, 108, 110.
  • the slats extend upwardly from a floor region 172 of the upper portion 170.
  • Each slat has side walls (for example, as shown at 174, 176 in figure 7) and end walls (one of which is shown at 178 in figure 7, with an opposed end wall 180 being shown in figure 8).
  • an immediately adjacent slat has side walls 182 and 184.
  • a part of the floor region 186 extends between the side wall 174 and the adjacent side wall 182 of the next slat.
  • side walls 174, 182 and floor region 186 form a reinforcing rib that extends from the floor region 172 to the top surface of the slats. It will be appreciated that similar reinforcing ribs exists between each of the adjacent slats in the upper portion 170.
  • the reinforcing ribs of the lower portion 130 extend along the length of the lower portion 130 whilst the reinforcing ribs of the upper portion 170 extend across the width of the upper portion 170.
  • the reinforcing ribs of the lower portion 130 extend in a different direction to the reinforcing ribs of the upper portion 170.
  • the upper portion 170 also includes an outer upstanding wall, respective sides of which are denoted by reference numerals 188, 190, 192 and 194.
  • the outer upstanding wall extends upwardly from the floor region 172 of the upper portion 170 of the pallet.
  • the dimensions of the upper portion 170 are such that the upper portion 170 can snugly fit into the space defined by the upstanding wall portions 132, 134, 136 and 138 of the lower portion 132. In this manner, the upstanding wall of the lower portion 130 is positioned in close abutment to and extending around the upstanding wall of the upper portion 170. This enables easy and convenient connection or joining of the upper portion to the lower portion in order to complete manufacture of the pallet 100, for example by high frequency welding.
  • the reinforcing ribs of the lower portion 130 extend essentially at right angles to the reinforcing ribs of the upper portion 170.
  • FIG 9 shows the reinforcing ribs 140, 142, 144, 145 extending from the top of the page to the bottom of the page (as shown in figure 9), with the reinforcing ribs of the upper portion 170 extending across the page (as shown in figure 9). Furthermore, the slats 106, 108, 110 also extend across the page (as shown in figure 9). Therefore, in the completed pallet, reinforcing ribs extended both along the pallet and across the pallet, thereby providing enhanced strength to the pallet. Further, the upper part of the reinforcing ribs of the lower portion 130 are in contact with the lower part of the reinforcing ribs of the upper portion 130 in the completed pallet. This ensures that forces can be transferred from the reinforcing ribs of the upper portion to the reinforcing ribs of the lower portion (and vice versa), thereby ensuring proper transfer of forces between the upper portion and the lower portion.
  • the PET pallet is formed by a process that includes a blow moulding step or a stretch blow moulding step.
  • a stretch blow moulding method may be as described in international patent application publication number W02006/096916, the entire contents of which are herein incorporated by cross reference.
  • the stretch blow moulding process may comprise forming a pre-form from PET (for example, by injection moulding molten PET).
  • the pre-form may be as shown by reference to reference numeral 270 in W02006/096916.
  • the pre-form may then be placed in a mould, heated to a temperature between the glass transition temperature of PET and the melting temperature of PET.
  • a stretching member may then be used to stretch the PET pre-form.
  • the pre-form is then blow moulded by injecting a pressurised fluid, such as a pressurised incompressible fluid (for example, hot water).
  • a pressurised fluid such as a pressurised incompressible fluid (for example, hot water).
  • a pressurised incompressible fluid for example, hot water
  • blow moulding the PET preform in this manner also causes biaxial orientation of the PET, which significantly enhances the strength of the PET.
  • the blow moulding fluid may be removed from the mould by injecting pressurised air into the mould to expel the blow moulding fluid.
  • this step also cools the PET to a temperature at which it becomes self-supporting and below the glass transition temperature of PET.
  • the article produced by the blow moulding step may then be removed from the mould.
  • Figures 10 and 11 show a mould 200 that may be used in the process for producing the biaxially oriented PET pallet 100 described with reference to figures of 1 to 9.
  • the mould 200 includes four sides, two of which are denoted by reference numerals 202 and 204 in figure 10 and figure 11. The sides of the mould will be described in more detail with reference to figures 12 and 13.
  • the mould 200 includes an opening 206. Opening 206 provides an entry point through which the mould preform may be introduced into the mould.
  • the mould 200 also includes a roof portion 208.
  • FIG. 12 The sides of the mould 200 are shown in more detail with reference to figures 12 and 13.
  • Figures 12 and 13 show perspective views of the side 204 of mould 200 shown in figures 10 and 11.
  • Figure 12 is a perspective view of the outside of side 204 whilst figure 13 is a perspective view of the inside of side 204.
  • Side 204 includes an upper region 210 that has a shape that is a mould for the upper portion 170 of the pallet.
  • Side 204 also includes a lower portion 212 that has a shape that is a mould for the lower portion 130 of the pallet.
  • the upper portion 210 includes portions 106a, 108a and HOa that will form the slats 106, 108 and 110 of the upper portion 170.
  • the upper portion includes mould portions 186a that will form the reinforcing rib 186 (and similar mould portions that will form the other reinforcing ribs of the upper portion 170 of the pallet).
  • the upstanding outer wall of the upper portion 170 will be formed by mould portion 214.
  • the lower portion 212 of side 204 also includes mould portions that corresponds to the various features of the lower portion 130 as shown in figures 3 to 6.
  • the side members 112, 114 are formed from mould portions 112a, 114a.
  • These mould portions also include mould portions 140a, 142a that form reinforcing ribs 140, 142 in the lower portion 130 of the pallet.
  • mould portions 118a, 120a form the spaces 118, 120.
  • Mould portions 144a, 145a form of the reinforcing ribs 144, 145.
  • mould portions 210 and 212 will need to be designed in order to form the upper portion 170 and lower portion 130 of the pallet.
  • the PET preform when the PET preform is heated, stretched and blow moulded, the PET becomes biaxially oriented and covers the inner surface of the mould 200 with an essentially even thickness coating of biaxially oriented PET.
  • the mould can be opened (in this regard, the mould 200 may be made in sufficient parts that are put together to form a closed mould for moulding, followed by separation of the parts to enable the moulded article to be removed from the mould after the blow moulding step has been completed).
  • the moulded article that is removed from the mould 200 has a number of sides that each form a part of the completed pallet.
  • the sides may form an upper part 170 and a lower part 130 of the completed pallet.
  • the moulded article will also include a roof made from PET that has coated the roof 208 of the mould 200. Therefore, it will be understood that each moulded article that is produced from a single moulding or moulding shot contains either upper portions and lower portions or upper portions only, or lower portions only that will enable 4 pallets to be assembled and manufactured.
  • the roof section of the moulded article is removed and the moulded article is cut into four separate sides. Each side is cut to separate the upper portion from lower portion.
  • the upper portion is positioned relative to the lower portion (as shown in figure 1) and the upper portion and the lower portion are joined together.
  • the upper portion and the lower portion may be joined together by high-frequency welding, for example. This is advantageous in that no other materials are introduced into the pallet, thereby simplifying later recycle of the PET pallet.
  • the roof portion of the moulded article is surplus to pallet requirements and may be returned to the PET preparation process for reuse in the moulding process, or used as biaxially oriented PET sheet or used for other purposes, such as special requirement pallet deck.
  • the roof part of the moulded article may be returned to step 10. It will also be appreciated that the PET that surrounds the opening 206 of the mould can also be removed from the moulded article and returned to the PET treatment process.
  • the mould shown in figures 10 to 13 includes four sidewalls that each define an upper portion 170 and a lower portion 130 of the pallet, it will be understood that variations of the mould may also be used.
  • one side of the mould may comprise a mould for an upper portion 170 of the pallet and another side of the mould may comprise a lower portion 130 of the pallet.
  • a first mould may be provided that defines only upper portions of the pallet on its sidewalls and a second mould may be provided that defines only lower portions of the pallet on its sidewalls.
  • a plurality of holes may be formed in both the upper portion and the lower portion of the mould (it will also be understood that the plurality of holes may be formed in only one of the upper portion or the lower portion).
  • the pallet 100' includes a variety of holes 250 formed in the upper support surface thereof.
  • the pallet 100' is formed from an upper portion 170' having a plurality of holes 250 formed in the upper surface thereof.
  • the pallet 100' also includes a lower portion 130' (see figure 16) having a plurality of holes 252 formed therein.
  • the plurality of holes 250, 252 may be formed by stamping, punching, drilling or the like.
  • the embodiment shown in figures 14 to 16 is advantageous in that the strength of the pallet is not significantly diminished compared to the embodiment shown in figure 2, but the weight of the pallet is lower because significant PET material has been removed from the pallet. The removed PET may be recycled to the PET treatment steps.
  • the present invention provides a biaxially oriented PET pallet.
  • the PET in the pallet may be biaxially oriented during the process for forming or producing the pallet.
  • the PET pallet is suitably made by a production process that includes a blow moulding step.
  • the blow moulding step suitably produces biaxial orientation of the PET.
  • the PET pallet, in being biaxially oriented, can be significantly stronger and/or significantly lighter than prior art PET pallets.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Pallets (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)

Abstract

La présente invention se rapporte à une palette en PET à orientation biaxiale. La palette peut être fabriquée par moulage par soufflage ou par moulage par étirage-soufflage.
PCT/AU2009/001618 2008-12-18 2009-12-14 Palette en polyéthylène téréphtalate (pet) à orientation biaxiale Ceased WO2010068971A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2008906520 2008-12-18
AU2008906520A AU2008906520A0 (en) 2008-12-18 Pallet

Publications (1)

Publication Number Publication Date
WO2010068971A1 true WO2010068971A1 (fr) 2010-06-24

Family

ID=42268160

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2009/001618 Ceased WO2010068971A1 (fr) 2008-12-18 2009-12-14 Palette en polyéthylène téréphtalate (pet) à orientation biaxiale

Country Status (2)

Country Link
TW (1) TW201036873A (fr)
WO (1) WO2010068971A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110369976A (zh) * 2019-07-26 2019-10-25 嘉兴永信精密钢管有限公司 一种汽车传动轴用电焊管生产工艺
WO2021091829A1 (fr) * 2019-11-04 2021-05-14 Niagara Bottling, Llc Éléments de palette en polymère composite
DE202021101643U1 (de) 2021-03-29 2021-11-25 Wemas Absperrtechnik Gmbh Transportpalette für Absperrgeräte
WO2023091016A1 (fr) * 2021-11-19 2023-05-25 Rexnord Flattop Europe B.V. Module de bande transporteuse

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000031356A1 (fr) * 1998-11-26 2000-06-02 Mitie Plastics Limited Structures porteuses de charge
DE10127120A1 (de) * 2001-06-05 2002-12-19 Holzapfel & Co Kg Geb Kunststoffpalette und Palettensystem
US20030054126A1 (en) * 1997-06-24 2003-03-20 Japan Polyolefins Co., Ltd. Ethylene (co) polymers, and laminate and hollow molding made by using the same
WO2004072168A2 (fr) * 2003-02-14 2004-08-26 Ciba Specialty Chemicals Holding Inc. Compositions de resine
US20050203226A1 (en) * 2002-05-30 2005-09-15 Dietmar Mader Beta crystalline polypropylenes
US20060173123A1 (en) * 2002-08-12 2006-08-03 Yang Henry W Modified polyethylene compositions

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030054126A1 (en) * 1997-06-24 2003-03-20 Japan Polyolefins Co., Ltd. Ethylene (co) polymers, and laminate and hollow molding made by using the same
WO2000031356A1 (fr) * 1998-11-26 2000-06-02 Mitie Plastics Limited Structures porteuses de charge
DE10127120A1 (de) * 2001-06-05 2002-12-19 Holzapfel & Co Kg Geb Kunststoffpalette und Palettensystem
US20050203226A1 (en) * 2002-05-30 2005-09-15 Dietmar Mader Beta crystalline polypropylenes
US20060173123A1 (en) * 2002-08-12 2006-08-03 Yang Henry W Modified polyethylene compositions
WO2004072168A2 (fr) * 2003-02-14 2004-08-26 Ciba Specialty Chemicals Holding Inc. Compositions de resine

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110369976A (zh) * 2019-07-26 2019-10-25 嘉兴永信精密钢管有限公司 一种汽车传动轴用电焊管生产工艺
WO2021091829A1 (fr) * 2019-11-04 2021-05-14 Niagara Bottling, Llc Éléments de palette en polymère composite
DE202021101643U1 (de) 2021-03-29 2021-11-25 Wemas Absperrtechnik Gmbh Transportpalette für Absperrgeräte
WO2023091016A1 (fr) * 2021-11-19 2023-05-25 Rexnord Flattop Europe B.V. Module de bande transporteuse
WO2023091015A1 (fr) * 2021-11-19 2023-05-25 Rexnord Flattop Europe B.V. Module de bande transporteuse
NL2029847B1 (en) * 2021-11-19 2023-06-13 Rexnord Flattop Europe Bv Modular conveyor belt, conveyor belt module, method of manufacturing a conveyor belt module, and use of a material to manufacture a conveyor belt module
US20250026574A1 (en) * 2021-11-19 2025-01-23 Rexnord Flattop Europe B.V. Conveyor Belt Module

Also Published As

Publication number Publication date
TW201036873A (en) 2010-10-16

Similar Documents

Publication Publication Date Title
US12472674B1 (en) Container and method of manufacture
US7837923B2 (en) Method of molding load-bearing articles from compressible cores and heat malleable coverings
KR100304340B1 (ko) 플라스틱볼로성형에사용되는다층의예비성형품및그예비성형품을만드는방법
US5405567A (en) Molding of articles from plastics
US5469612A (en) Method for forming a strain-hardenable plastic container
US6386118B1 (en) Pallet with stress resistant structure
US8550272B2 (en) Extrusion blow molded pet container having superior column strength
EP1853416B1 (fr) Procédé pour la fabrication de récipients comportant une poignée intégrée
CA2531562A1 (fr) Conception d'une base pour la pasteurisation
JPH1190975A (ja) 回収ポリエステル樹脂層を有する多層プリフォームと該多層プリフォームの製造方法及びこの多層プリフォームから成形された多層容器
WO2010151106A1 (fr) Palette améliorée
WO2010068971A1 (fr) Palette en polyéthylène téréphtalate (pet) à orientation biaxiale
JP4186587B2 (ja) プリフォーム及びこれを用いて製造した二軸延伸容器
MXPA06001328A (es) Produccion continua de preformas de recipientes.
WO2011116095A2 (fr) Adhésifs radiopolymérisables pour fixer des éléments fonctionnels et/ou décoratifs sur des récipients en plastique
EP0641719B1 (fr) Bouteille de resine synthetique
JP3249669U (ja) 廃プラスチック製容器
US20240131772A1 (en) Container and method of manufacture
US20250108549A1 (en) Container and method of manufacture
WO2025004065A1 (fr) Procédé de production de contenants ayant un motif de renforcement sur la paroi interne
Paine Moulded pulp, expanded polystyrene, moulded and thermoformed plastic containers
CN116888051A (zh) Pet杯子容器及其制造方法
JPH08276538A (ja) 非食品用多層容器

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 09832700

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 09832700

Country of ref document: EP

Kind code of ref document: A1