WO2008070916A1 - Matériaux, systèmes et procédés mettant en jeu une matière plastique - Google Patents

Matériaux, systèmes et procédés mettant en jeu une matière plastique Download PDF

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Publication number
WO2008070916A1
WO2008070916A1 PCT/AU2007/001918 AU2007001918W WO2008070916A1 WO 2008070916 A1 WO2008070916 A1 WO 2008070916A1 AU 2007001918 W AU2007001918 W AU 2007001918W WO 2008070916 A1 WO2008070916 A1 WO 2008070916A1
Authority
WO
WIPO (PCT)
Prior art keywords
electronic equipment
building product
styrene
equipment material
waste electrical
Prior art date
Application number
PCT/AU2007/001918
Other languages
English (en)
Inventor
Stephen Michael Morriss
Original Assignee
Close The Loop Technologies 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 AU2006906953A external-priority patent/AU2006906953A0/en
Application filed by Close The Loop Technologies Pty Ltd filed Critical Close The Loop Technologies Pty Ltd
Publication of WO2008070916A1 publication Critical patent/WO2008070916A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/0026—Recovery of plastics or other constituents of waste material containing plastics by agglomeration or compacting
    • B29B17/0042—Recovery of plastics or other constituents of waste material containing plastics by agglomeration or compacting for shaping parts, e.g. multilayered parts with at least one layer containing regenerated plastic
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/003—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor characterised by the choice of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C1/00—Building elements of block or other shape for the construction of parts of buildings
    • E04C1/40—Building elements of block or other shape for the construction of parts of buildings built-up from parts of different materials, e.g. composed of layers of different materials or stones with filling material or with insulating inserts
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/26—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/0011—Moulds or cores; Details thereof or accessories therefor thin-walled moulds
    • B29C33/0016—Lost moulds, e.g. staying on the moulded object
    • 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
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/26—Scrap or recycled material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

Definitions

  • the present invention relates to materials, systems and methods involving plastics material.
  • the present invention relates to the recycling of waste electrical and electronic equipment (WEEE).
  • WEEE waste electrical and electronic equipment
  • the present invention relates to a multilayered building product.
  • a building product comprising a first layer of plastics material and a second layer of plastics material with a core layer therebetween, the core layer containing processed waste electrical and electronic equipment material.
  • a process of forming material into a product comprising: processing waste electrical and electronic equipment material to incorporate waste toner and waste plastics; providing two layers of plastics material either side of the processed waste electrical and electronic equipment material to provide a first and a second layer with a core layer therebetween, the core layer being provided by the processed waste electrical and electronic equipment material.
  • the building product may be provided with cellular morphology with the use of a blowing agent comprising azodicarbonamide.
  • a compatibilizer comprising a styrene acrylate copolymer may be added.
  • Preferred arrangements provide a manner in which the material of obsolete electronic products can be reused. In these arrangements the obsolete electronic products are recycled into a core comprising the waste that is hidden from view and which locks away toner.
  • Advantageous strength and rigidity characteristics are, in arrangements, provided in a building product which can be used in situations requiring an aesthetically pleasing result.
  • Advantageous acoustics and thermal properties are also preferably provided.
  • Figure 1 is a perspective view of a building product according to a first preferred embodiment of the present invention.
  • Figure 2 is a schematic view of a method according to a second preferred embodiment of the present invention.
  • the building product 10 comprises a first layer of plastics material 12 and a second layer of plastics material 14 with a core layer 16 containing processed waste electrical and electronic equipment material 18 between the first and second layers 12, 14.
  • the building product 10 advantageously provides beneficial aesthetic and mechanical properties.
  • the building product 10 forms a multilayer moulded unit that is anticipated will find application in a wide number of areas such as in the construction of barriers, walls, marina walkways, concrete formwork, marine plywood substitution, marine dryboard applications, thermal insulation panels, containers including insulated fruit and vegetable crates and boxes, slip sheets for wooden pallets, layer pads for stacking glass bottles, and containers on pallets.
  • Figure 2 illustrates a process 20 according to a second preferred embodiment of the present invention in which the building product 10 is produced.
  • the building product 10 is formed as a product 22 that incorporates waste toner 24 and waste plastics 26 from waste electrical and electronic equipment material 28.
  • the waste electrical and electronic equipment material 28 comprises used computer printer cartridges.
  • waste styrene-acrylate toner 29 and styrenic plastics 32 are incorporated to form the core layer 16.
  • the core layer 16 is sandwiched between first and second layers 12, 14 which in this embodiment comprise layers of polyolefin plastic.
  • the process 20 includes at block 35 adding a comptabtlizer 36 to the waste styrene-acrylate toner 29 and the styrenic plastics 32.
  • the compatibilizer 36 is added at the same time as the waste toner 29 and mixed styrenic plastics 32 and is then mixed to form a homogeneous mixture.
  • waste electrical and electronic equipment is processed to provide the processed waste electrical and electronic equipment material 18.
  • the processed material comprises processed computer printers, fn other embodiments the processed material comprises processed mobile phones and other electronic equipment.
  • the waste plastics 26 comprises styrenic polymer based on styrene-butylene-styrene/ethylene-propylene monomer (SBS/EPM). In other embodiments the waste plastics 26 comprises, strene- ethylene-butylene-b-polystyrene (SEBS).
  • the styrenic blend nature of the waste plastics 26 advantageously provides stiffness and rigidity that offsets the inherent flexibility of the first and second layers 12, 14 which comprise polyolefins.
  • the compatibifeer 36 achieves good interfadal adhesion between the core layer 16 and the first and second layers 12, 14. This serves to prevent interlamellar fracture. Without the compatibilizer 36 the components would be largely immisicle and would not bond together well. This would result In planes of weaknesses which under the application of mechanical stress would lead to delamination.
  • compatibilizers should have both a styrene character and an olefin character. Block copolymers of these two classes of compound are preferred.
  • the compatibilizer in particular forms of the invention, may be one or more of the following class of materials, waste toner powder (styrene acrylate copolymer), ethylene vinyl acetate, styrene-butylene-styrene/ethylene-propylene monomer (SBS/EPM) or strene-ethylene-butylene-poiystyrene (SEBS).
  • waste toner powder styrene acrylate copolymer
  • ethylene vinyl acetate styrene-butylene-styrene/ethylene-propylene monomer (SBS/EPM) or strene-ethylene-butylene-poiystyrene (SEBS).
  • SBS/EPM styrene-butylene-styrene/ethylene-propylene monomer
  • SEBS strene-ethylene-butylene-poiystyrene
  • the core layer 16 is sandwiched between the first and second layers 12, 14 to mask any inconsistencies in the appearance of the core layer 16.
  • the first and second layers 12, 14 each comprise non transparent virgin materials so that any inconsistencies in the physical appearance in the core layer 16, resulting from the presence of contamination by foreign objects or irregular colour tones in the core 16 are, by and large, hidden from view.
  • the recycled core 16 being buried between two layers of virgin polymer 12, 14 there is provided good surface finish, uniform colour, good gloss and no voids, inclusions or obvious defects that detract from the visual appearance. This is provided despite the core layer 16 being of a variable colour and consistency.
  • polyethylene or polypropylene is added to the waste electrical and electronic equipment material 18 to vary the overall stiffness of the core layer 16.
  • the core 16 is provided with a cellular morphology 38 by adding blowing agents.
  • the core 16 is made into a cellular structure through the use of blowing agents whose activation temperature falls in the temperature range of the moulding process used, in this embodiment blowing agents for the core i&yer 16 comprise sodium bicarbonate/citric acid mixes and azodicarbonamide.
  • blowing agents for the core i&yer 16 comprise sodium bicarbonate/citric acid mixes and azodicarbonamide.
  • the use of the blowing agent stiffens the core layer 16 to provide a strong and lightweight product with a cellular morphology.
  • the core layer 16 advantageously comprises waste toner powder and mixed styrenic polymers which in the building product 10 imparts rigidity.
  • the toner is advantageously 'locked away 1 within the core 16.
  • the first and second layers 12, 14 form aesthetic skin layers comprising polyolefin either side of a core having a styrenic blend nature.
  • a coupling agent/s in the form of compatibilizer 36 is used to prevent debonding and delamination between the styrenics layer and the polyolefin skin layers.
  • the process 20 incorporates recycled plastic into an aesthetically and mechanically advantageous component having advantageous, mechanical properties. These properties include acoustic properties, thermal properties and strength properties.
  • first and second layers form two skins of virgin plastics material preferably a polyolefin such as polyethylene or polypropylene.
  • the moulding process 20 is preferably a powder impression moulding process in which the core is sandwiched.
  • the powder impression moulding process is used to mould plastic building products 10 comprising an expanded foamed plastics core comprised of mixed styrenic plastics and/or waste toner powder sandwiched between the first and second layers 12, 14. It is considered that the production of relatively thin-walled plastic building products using commodity polyolefins applied either side of a core formed from waste toner powder and/or styrenic piastics is particularly advantageous.
  • waste toner and mixed styrenic plastics are poured into an open mould to 200-300 degrees Celsius such that the mould is at a higher temperature than the melting point of the plastic particulate material.
  • the mould is then closed for a period of time known as the residence time, which couid be between 1 and 20 minutes so that the mixed plastics melts to form a skin of thickness between 1 mm and 10 mm.
  • An appropriate blowing agent such as sodium bicarbonate/citric acid mixes and azodicarbonamide is used.
  • two complementary male and female moulds are used in the formation of the opposed surfaces of a core layer over which granulate or powder plastics and/or toner powder are placed.
  • the moulds are heated by conduction to melt and form a molten plastics material that is then shaped under pressure to adopt the form of the moulds.
  • Nestable male and female moulds could be used which under heat and pressure impart a predetermined shape to fused plastic.
  • Suitable release agents can be used such as silicone oil or fatty acid amide waxes so that the heated male and female moulds do not adhere to the two skins of plastic article.
  • the moulded product is released from the moulds after moulding, however in alternative process thin-walled mould sheets are retained on the finaf moulded product to give integrally bonded faces to the underlying plastics material.
  • the thin walled mould panels may be aluminium sheet, galvanized steel sheet, sheet metal depending on the particular requirement.
  • the thin walled mould sheets may comprise Colourbond steel sheet to give a decorative outer appearance and strength properties combined with the insulating properties of the plastics material of the core therebetween.
  • adhesion promoters such as titanates or zirconates are used so that the heated male and female moulds adhere to the two skins of plastic articles such that an article is formed having a moulded surface on both sides with a metallic skin on top. In such embodiment mould releases agents would not be used.
  • WO2005090041 entitled MOULDING PLASTICS ARTICLES, to 3DM WORLDWIDE PLC 1 having an international filing date of 21 March 2005.
  • WO2005090041 is hereby fully incorporated by reference.
  • the present invention utilizes waste electrical and electronic equipment material as a core. This is achieved as described.
  • a material which comprises of a formulation including waste toner, cellulose material mixed with dye and pigment Ink concentrates, waste plastics, and crushed waste glass(silica) from electrical / electronics scrap.
  • various compatibiiizers and foaming agents are used in the formation of the material.
  • building products comprise powdered CRT glass or powdered PU foam possibly mixed with powdered styrenics, nylons, toner powder in the core.
  • waste electrical and electronic equipment material is mixed with a foaming agent and be used as a core layer in sandwich moulding process to form a multilayered component similar to building product 10.
  • suitable compatibiiizers are used to ensure good wetting and adhesion between the core layer and the different materials of the adjoining layers.
  • the building product due to its cellular core and rigid skin is advantageously lightweight, rigid and exhibits good acoustic attenuation properties for applications such as highway barriers walls and good thermal insulation properties to reduce heating losses.
  • a nail and a screw may not be structural equivalents in that a nail employs a cylindrical surface to secure wooden parts together, whereas a screw employs a helical surface to secure wooden parts together, in the environment of fastening wooden parts, a nail and a screw are equivalent structures.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention concerne un produit de construction (10) qui comprend une première couche de matière plastique (12) et une seconde couche de matière plastique (14), une couche centrale (16) contenant un matériau d'équipement électrique et électronique de déchets traités (18) étant disposé entre les première et seconde couches (12, 14). Dans des agencements, le produit de construction (10) fournit avantageusement des propriétés esthétiques et mécaniques utiles.
PCT/AU2007/001918 2006-12-14 2007-12-13 Matériaux, systèmes et procédés mettant en jeu une matière plastique WO2008070916A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2006906953 2006-12-14
AU2006906953A AU2006906953A0 (en) 2006-12-14 Materials, Systems and Methods Involving Plastics Material

Publications (1)

Publication Number Publication Date
WO2008070916A1 true WO2008070916A1 (fr) 2008-06-19

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PCT/AU2007/001918 WO2008070916A1 (fr) 2006-12-14 2007-12-13 Matériaux, systèmes et procédés mettant en jeu une matière plastique

Country Status (1)

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WO (1) WO2008070916A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBO20110528A1 (it) * 2011-09-14 2013-03-15 Refri S R L Metodo per la realizzazione di un pallet in materiale plastico derivante da materiale da rifiuto
WO2013186787A2 (fr) * 2012-06-13 2013-12-19 Nagpaul Rahul Produit pour une réutilisation de déchet d'équipements électrique et électronique et procédé associé
CN103613817A (zh) * 2013-10-28 2014-03-05 安徽精一机械设备有限公司 一种轻质隔音泡沫材料

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06285859A (ja) * 1993-04-06 1994-10-11 Hiroshima Pref Gov 廃発泡プラスチックスを原料とする複合材及びその製造方法
JP2002052633A (ja) * 2000-08-11 2002-02-19 Mitsubishi Plastics Ind Ltd 多層プラスチックシート等のリサイクル押出成形体
WO2003025046A1 (fr) * 2001-08-14 2003-03-27 G.J.N. Polymers Limited Procede de fabrication de melanges meres
WO2005123817A1 (fr) * 2004-06-15 2005-12-29 Close The Loop Technologies Pty Ltd Methode de recyclage de flux melanges de dechets electroniques
US20060059815A1 (en) * 2003-06-17 2006-03-23 Bergareche Alberto A Composite panel for application in concrete shuttering and procedure for obtaining the same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06285859A (ja) * 1993-04-06 1994-10-11 Hiroshima Pref Gov 廃発泡プラスチックスを原料とする複合材及びその製造方法
JP2002052633A (ja) * 2000-08-11 2002-02-19 Mitsubishi Plastics Ind Ltd 多層プラスチックシート等のリサイクル押出成形体
WO2003025046A1 (fr) * 2001-08-14 2003-03-27 G.J.N. Polymers Limited Procede de fabrication de melanges meres
US20060059815A1 (en) * 2003-06-17 2006-03-23 Bergareche Alberto A Composite panel for application in concrete shuttering and procedure for obtaining the same
WO2005123817A1 (fr) * 2004-06-15 2005-12-29 Close The Loop Technologies Pty Ltd Methode de recyclage de flux melanges de dechets electroniques

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBO20110528A1 (it) * 2011-09-14 2013-03-15 Refri S R L Metodo per la realizzazione di un pallet in materiale plastico derivante da materiale da rifiuto
WO2013186787A2 (fr) * 2012-06-13 2013-12-19 Nagpaul Rahul Produit pour une réutilisation de déchet d'équipements électrique et électronique et procédé associé
WO2013186787A3 (fr) * 2012-06-13 2014-06-19 Nagpaul Rahul Produit pour une réutilisation de déchet d'équipements électrique et électronique et procédé associé
CN103613817A (zh) * 2013-10-28 2014-03-05 安徽精一机械设备有限公司 一种轻质隔音泡沫材料

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