Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65F—GATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
  • B65F1/00—Refuse receptacles; Accessories therefor
  • B65F1/14—Other constructional features; Accessories
• • 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
  • 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
  • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
  • B29K2023/04—Polymers of ethylene
  • B29K2023/06—PE, i.e. polyethylene
• • 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
  • B29L2030/00—Pneumatic or solid tyres or parts thereof
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65F—GATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
  • B65F2250/00—Materials of refuse receptacles
• • 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 invention relates to the technical field of waste containers.
• waste containers may be for example rolling bins for the collection of household waste, buried or semi-buried containers.
• waste containers are partially made of plastic.
• certain parts such as wheel tires or damping stops of the lid of a waste container, are made of rubber.
• one object of the invention is to provide waste container parts made of a more economical material.
• the subject of the invention is a piece of waste container made of a mixture of grinding residues of used tires and of thermoplastic material.
• Used tire grinding residues sometimes referred to as crumb when the size of their particles is less than 20 millimeters, is a relatively cheap material. It is therefore particularly interesting to use this material for the design of waste container parts.
• the crumb of recycled tires is a material which, once molded, for example by injection, does not have sufficient cohesion to be able to form parts of resistant waste containers.
• thermoplastic material has a binder effect of the tire particles together and provides cohesion to the mixture.
• thermoplastic and grinding residues in the mixture will be determined.
• thermoplastic material The larger the amount of thermoplastic material, the stronger the material. However, economic requirements are also to be considered when mixing materials since the cost price of the thermoplastic material can reach ten times that of tire grinding residues.
• a waste container part according to the invention may further comprise one or more of the following features.
• the thermoplastic material is a polyethylene.
• Polyethylene is a material that gives very good results when mixed with tire grinding residues.
• the amount of thermoplastic material is between 1% and 60% by weight of the mixture. Depending on the type of part to be manufactured, it is possible to determine the relative amount of thermoplastic material to be mixed. In particular, if it is desired to obtain a very mechanically resistant part, a greater quantity of thermoplastic will be added. If, on the contrary, a part is desired whose acoustic absorption qualities are great, a smaller quantity of thermoplastic material will be used.
• the amount of thermoplastic material is between 1% and 7% by weight of the mixture.
• the thermoplastic material is used in a majority amount and the tire residues in a minor amount in the form of a filler. It has been found that, contrary to the prejudices of the state of the art, it is possible to use a very small amount of thermoplastic of between 1% and 7% by weight to bring cohesion to tire residues and to manufacture a piece whose mechanical qualities are correct. Even with as little as 1% of thermoplastic material, it forms a mesh around and within the tire residues so that, once the mesh has cooled, it forms a binder of the residues between them and prevents their formation. separation.
• thermoplastic material can be used to manufacture parts that are masked or not very visible and whose functional and mechanical qualities are more important than their aesthetic qualities.
• this invention can be applied for the manufacture of Wheel bandages or lid cushioning stops that are mostly hidden by the cover.
• thermoplastic material when the amount of thermoplastic material is very small, the cooling and securing time of this material is short. It is then possible to extract the part of the mold very quickly after the viscous material has been molded. Thus, such a part is cheap, on the one hand because the majority of the material is recycled and therefore inexpensive, and on the other hand by reducing the molding cycle time due to the short cooling time.
• Waste grinding residues of used tires are in the form of particles of dimensions between 0.2 millimeters and 20 millimeters.
• the invention can be implemented with a wide variety of used tire residues.
• the particles have a dimension of the order of 0.5 millimeters or less, it is sometimes called tire crumb.
• the tire particles Preferably, have dimensions of between 10 and 20 millimeters.
• Such particles of substantial size are relatively cheap because the grinding operation to obtain these particles is simple. They are particularly well suited to the manufacture of parts intended to be masked or not very visible and whose functional and mechanical qualities are more important than their aesthetic qualities.
• the piece is selected from any of the elements of the assembly consisting of a drain plug, a drain plug gasket, a compost grid, a garbage collection bin wheel, a trolley wheel hub cap. waste collection, a selective collection container shutter, a rolling soundproofing compensator, a soundproofing pad or stopper at closing / opening of the lid, a hopper container lid axis.
• This wheel tire is produced by molding, for example by injection, a material derived from the mixture of grinding residues of used tires and polyethylene.
• the grinding residues of used tires are introduced into a mixer in the form of particles smaller than 500 microns, known as crumb.
• a mixer in the form of particles smaller than 500 microns, known as crumb.
• between 5 and 30% of polyethylene is added.
• this mixture is heated to a temperature substantially equal to 200 ° so that the polyethylene becomes viscous and mixes intimately with the crumb.
• the polyethylene makes it possible to obtain a good cohesion of the
• the mixture obtained is then molded in the form of the wheel tire and then cooled.
• the tire thus obtained has mechanical properties substantially identical to those of a wheel tire conventionally produced after firing a revulcanized rubber.
• the invention therefore makes it possible, at a lower cost, to manufacture waste container parts whose mechanical properties are identical to those of previously manufactured parts.
• the method described for the manufacture of the wheel tire is not limiting. Other methods can be used for the manufacture of a container part partially made of tire residue and thermoplastic.

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

Applications Claiming Priority (2)

Publications (1)

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Family Applications (1)

Country Status (4)

Citations (1)

Family Cites Families (8)

• 2008
  • 2008-12-19 FR FR0858885A patent/FR2940253B1/fr not_active Expired - Fee Related
• 2009
  • 2009-12-17 EP EP09805738A patent/EP2376352A1/de not_active Ceased
  • 2009-12-17 WO PCT/FR2009/052603 patent/WO2010070239A1/fr not_active Ceased
  • 2009-12-17 CN CN2009801557039A patent/CN102300785A/zh active Pending

Patent Citations (1)

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