Classifications

• • 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
  • B32B1/00—Layered products having a non-planar shape
  • B32B1/08—Tubular products
• • 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
  • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
• • 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
  • B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
• • 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
  • B32B5/02—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 structural features of a fibrous or filamentary layer
  • B32B5/08—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 structural features of a fibrous or filamentary layer the fibres or filaments of a layer being of different substances, e.g. conjugate fibres, mixture of different fibres
• • 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
  • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
  • B32B7/04—Interconnection of layers
  • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
  • F16L11/00—Hoses, i.e. flexible pipes
  • F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
• • 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
  • B32B2307/00—Properties of the layers or laminate
  • B32B2307/30—Properties of the layers or laminate having particular thermal properties
  • B32B2307/306—Resistant to heat
  • B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
• • 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
  • B32B2307/00—Properties of the layers or laminate
  • B32B2307/70—Other properties
  • B32B2307/74—Oxygen absorber
• • 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
  • B32B2377/00—Polyamides
• • 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
  • B32B2597/00—Tubular articles, e.g. hoses, pipes
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
  • F16L11/00—Hoses, i.e. flexible pipes
  • F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
  • F16L2011/047—Hoses, i.e. flexible pipes made of rubber or flexible plastics with a diffusion barrier layer

Definitions

• the invention is concerned with multilayer tubes for use in a motor-vehicle .
• the used fuel tubes do not have interactions with existing materials within the fuel, like oxidants, detergents, tensides and additives (e.g. ethanol, methanol, etc.)
• Particulary one object of the invention is to provide a novel barrier layer having stable carrier characteristics in the frame of multilayer tubes.
• the object is solved by a multilayer tube having the features of claim 1, in particular a multilayer tube comprising at least one Polyphthalamide layer, being used as fuel- or vapor tube. Further embodiments result from the appropriate sub- claims.
• the term crizotube is to be understood as a functional synonym or equivalent corresponding to "hose” or “line” .
• Multilayer tube means a tube consisting of at least two layers. More preferably the tube consists of three and more layers, most preferably 3 - 5 or 6 layers (cf . embodiments in detail below) ; further layers are also possible.
• At least one Polyphthalamide (in short: PPA) layer is a suitable barrier layer of the tube, preferably comprising one or more Polyamide layer. If necessary in combination with a bonding layer, preferably selected from a polyamide.
• Polyamides are preferably selected from the group consisting of 6, 6-Polyamide (in short: PA 6), 11, 11-Polyamide (in short: PA 11), 12, 12-Polyamide (in short: PA 12), Copolymer derived from 6, 6-Polyamide and 12 , 12-Polyamide (in short: PA 6/12).
• Layers consisting of Polyethylene (in short: PE) or Polypropylene (in short: PP) or a Copolymer thereof may also contain.
• the outer layer and/or inner layer consists of PPA. This depends on the fact, that embodiments having PPA - intermediate layer exhibit less laminate chatacteristics than those embodiments comprising PPA- inner and / or outer layer.
• a further embodiment relates to a multilayer tube according to the invention, wherein at least one layer, in fact PPA- or PA- layer is conductible.
• the conductibility of the tube may be provided for example (non-complete listing) by the means of surcharges of carbon (also carbon black) or metals (Cu, Si, Ag, Au, Ni etc.) .
• the multilayer tubes prove to be stable and strainable, also respectively bending and elongation under maintenance of the laminate characteristics.
• an especial embodiment concerns a multilayer tubing, comprising at least one PPA-layer and at least one Polyamide, non-completing selected from the group having the layers:
• PPA - PA 6 - PA 6/12 (bonding agent) - PA 12 PPA - PA 6 - PA 6/12 (bonding agent) - PPA, PPA - PA 6/12 (bonding agent) - PA 12 , PA 6 - PPA - PA 6, PA 12 - PPA - PA 12, PPA - PA 6 (bonding agent) - PPA, PPA cond. - PPA - PA 6 (bonding agent) - PPA.
• PPA poly(ethylene glycol)
• outer and / or inner layer are prefered.
• Most advantegous are the high temperature resistance, chemical inert properties, flexibility of the performance, good adhesion.
• the multilayer tubes according to the invention can be used for all types of conventional fuel and petrol or vapors (including gases) and are obtainable in every desired length and thickness (diameter as well as wall thickness) .
• the tube materials mentioned in this context are exclusively materials that can be commercially acquired in trade.
• the tube materials indicated are all easily extrudable, if necessary co-extrudable and easily accessible to fusion processing as thermoplastic materials.
• the layers adhere to one another due to permanent laminar adhesion, if necessary supported by means of a bonding agent or an adhesive (e.g. glue as well) .
• All embodiments of the multilayer tubes as per the invention can be manufactured by the person skilled in the art in a known manner.
• the layers can contain additions, i.e. the usual softeners, flame restraints and anti-oxidation means or stabilising agents.
• the multiplayer tubes as per the layer in question can optionally contain an outer cover, which e. g. consists of a adequate thermoplastic suitable for fusion processing, which is either co-extruded or attached, for the purpose of an additional isolation (protection) .
• this layer may be able to lead off electrostatic energy. According to the invention such an outer cover shall be not read as a synonym for outer layer.
• PA 6 BA PPA PA 6
• PA 11 BA PPA PA 11
• PA 11 PPA PA 6/12 BA PA 11
• PA 11 PA 6/12 BA PA 12
• PA 12 PPA PA 6/12 BA PA 11

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Laminated Bodies (AREA)
• Rigid Pipes And Flexible Pipes (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=34258561

Family Applications (1)

Country Status (2)

Cited By (2)

Families Citing this family (2)

Citations (5)

Family Cites Families (1)

• 2003
  • 2003-09-09 DE DE10341988A patent/DE10341988B4/de not_active Expired - Fee Related
• 2004
  • 2004-09-09 WO PCT/EP2004/010059 patent/WO2005023542A1/en active Application Filing

Patent Citations (5)

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