Classifications

• • 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
  • B29C33/56—Coatings, e.g. enameled or galvanised; Releasing, lubricating or separating agents
• • 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
  • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
  • B29C43/18—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles
  • B29C43/183—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles the preformed layer being a lining, e.g. shaped in the mould before compression moulding, or a preformed shell adapted to the shape of 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
  • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
  • B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
  • B29C70/78—Moulding material on one side only of the preformed part
• • 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
  • B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
• • 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
  • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
  • B29K2105/08—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
  • B29K2105/0854—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns in the form of a non-woven mat
• • 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
  • B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
  • B29K2995/002—Coloured

Definitions

• the invention relates to a method of making coloured rigid articles and to the articles
• the vehicles can have metal panels as an exterior covering it would
• A-0266107 discloses an article said to be useful as an automobile body panel and comprising a cast weatherable polymer film made up of a pigmented acrylic layer
• the invention provides a method of making a coloured rigid article
• thermoplastic polymer to form the precursor of the skin
• the skin should be capable of being thermoformed (i.e. under vacuum) and have a
• the skin should be weather and impact resistant and have
• the thermoplastic layer may be acrylonitrilebutadienestyrene (ABS); an ester of acrylonitrilestyreneacrylic(ASA); polycarbonate and derivatives thereof;
• thermoplastic polymer is
• ABS and the pigmented layer is a glossy pigmented layer in a plastics carrier, e.g. a
• the sheet and layer are a coextrusion which is available under the trade mark "IRIDON".
• the formed article will need to be secured to a frame or companion articles and it is an
• the shell may be shaped to engage the free end
• the sheet is preferably formed of ABS, i.e. acrylonitrilebutadienestyrene, and the polyacrylate carrier for the pigment is preferably polymethylmethacrylate.
• ABS i.e. acrylonitrilebutadienestyrene
• polyacrylate carrier for the pigment is preferably polymethylmethacrylate.
• a high impact form having the following combination of properties: an Izod impact of 380-420 J/m at 23°C; a tensile strength of 30-40 MPa; a density of about 1.1
• the coextrusion sheet is first vacuum formed, i.e. thermoformed, in a male mould to
• the resin composition is cured in the mould.
• the shell comprises shell halves of cured epoxy GRP (which can be made to particularly tight tolerances).
• the shell halves are located in a mould which is then held in a pressure
• the shaped sheet is laid in the shell half with the acrylate layer face down, so that the
• the fibres Preferably have tensile and ductile properties.
• fibres may be loose but preferably take the form of a mat. While the fibres may be
• metals selected from a wide range of materials, e.g. metals, non-metals, composites such as
• the fibre material is preferably
• the resin composition should be selected to have mechanical properties according to
• the composition may be selected for sound attenuation, flowability (to allow the moulding of complex shapes); and be capable of being pigmented and colour matched.
• the resin composition may be selected from a range of curable materials such as PVC,
• composition is a mixture of acrylic polymer, polyethylene, polyester, polyurethane and the like.
• the composition is a mixture of acrylic polymer, polyethylene, polyester, polyurethane and the like.
• composition is selected to form a formed
• polyurethane in which case it comprises a polyol component, an isocyanate component
• ingredients may be present such as fillers, blowing agents,
• the polyol may be based on a polyester,
• the isocyanate may be methyldiisocyanate
• the curable resin composition is a polyurethane because
• Such element may be a threaded bolt the head of
• Curing is then initiated chemically or by temperature or other radiation. Foaming may be initiated chemically or by temperature or other radiation. Foaming may be initiated chemically or by temperature or other radiation. Foaming may be initiated chemically or by temperature or other radiation. Foaming may be initiated chemically or by temperature or other radiation. Foaming may be initiated chemically or by temperature or other radiation. Foaming may be initiated chemically or by temperature or other radiation. Foaming may be initiated chemically or by temperature or other radiation. Foaming may be initiated chemically or by temperature or other radiation. Foaming may be initiated chemically or by temperature or other radiation. Foaming may be initiated chemically or by temperature or other radiation. Foaming may be initiated chemically or by temperature or other radiation. Foaming may be initiated chemically or by temperature or other radiation. Foaming may be initiated chemically or by temperature or other radiation. Foaming may be initiated chemically or by temperature or other radiation. Foaming may be initiated chemically or by temperature or other radiation. Foaming may be initiated chemically or by temperature or other radiation.
• the invention provides a method of making a coloured rigid article comprising the steps of placing a shaped skin having a pigmented surface in a shaped shell in a pressure and temperature resistant mould with the pigmented surface
• the skin is a vacuum formed co-extrusion of a layer of an impact resistant
• the invention provides a rigid shaped article comprising an outer layer
• the article includes fibre
• Figure 1 is a side elevation of a coextrusion
• Figure 2 is a vertical section through a mould containing shell halves and before
• a coextrusion 1 comprising an acrylonitrile butadiene styrene 1A and a layer of
• pigmented impact modified polymethacrylate IB is thermo or vacuum formed in a
• suitable vacuum mould (not shown) at about 160° to 170°C to a required profile P of the skin of the intended article.
• the coextrusion is selected according to the properties required for the end use; in a preferred case the coextrusion has a density of about 1.1
• the coextrusion will have a Vicat softening temperature of about
• a rigid foam backing B is applied to the profile P in a mould shown in Figure 1.
• mould comprises a base 2 and a lid 3; and has side walls 4.
• the sidewalls are in
• bottom and top halves 4A, 4B respective shaped to hold the free edges of the profile P.
• a paste of a self setting filler composition 5, e.g. a filled plastics is placed in the lower
• the lower shelf half HI has a shaped upper wall against which
• the shell half is made of glass reinforced epoxy plastics or the like to tight tolerances, so that the profile is an accurate fit, and
• uncured polyurethane composition 7 is poured on to the upper, i.e.
• a top shell half H2 is placed at one end.
• the panel has been made with a glossy paint finish and at low cost.
• the shell halves are
• the invention is not limited to the embodiment shown.
• the coextrusion may have a shaped face to key to the foam layer.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Composite Materials (AREA)
• Laminated Bodies (AREA)
• Casting Or Compression Moulding Of Plastics Or The Like (AREA)
• Glass Compositions (AREA)
• Diaphragms For Electromechanical Transducers (AREA)
• Graft Or Block Polymers (AREA)
• Moulds For Moulding Plastics Or The Like (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=10805524

Family Applications (1)

Country Status (14)

Cited By (1)

Families Citing this family (2)

Family Cites Families (18)

• 1997
  • 1997-01-03 GB GB9700071A patent/GB2320908B/en not_active Expired - Fee Related
• 1998
  • 1998-01-05 AU AU53347/98A patent/AU721660B2/en not_active Ceased
  • 1998-01-05 JP JP52975798A patent/JP2001507298A/ja active Pending
  • 1998-01-05 BR BR9806830-0A patent/BR9806830A/pt not_active IP Right Cessation
  • 1998-01-05 CZ CZ992385A patent/CZ238599A3/cs unknown
  • 1998-01-05 EP EP98900097A patent/EP1011957A1/en not_active Ceased
  • 1998-01-05 PL PL98334441A patent/PL334441A1/xx unknown
  • 1998-01-05 CA CA002276663A patent/CA2276663A1/en not_active Abandoned
  • 1998-01-05 SK SK912-99A patent/SK91299A3/sk unknown
  • 1998-01-05 IL IL13069998A patent/IL130699A0/xx unknown
  • 1998-01-05 WO PCT/GB1998/000009 patent/WO1998029233A1/en not_active Application Discontinuation
  • 1998-01-05 TR TR1999/01970T patent/TR199901970T2/xx unknown
  • 1998-01-05 HU HU0000864A patent/HUP0000864A2/hu unknown
  • 1998-01-05 CN CN98801681A patent/CN1243472A/zh active Pending

Non-Patent Citations (1)

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