Thermoplastic reinforced hose construction

A flexible hose adapted for conveying fluids under pressure, said hose extending in an axial direction along a central longitudinal axis to an indefinite length, and in a radial direction circumferentially about said longitudinal axis, said hose comprising:

• a core tube having a circumferential inner core tube surface and an opposing circumferential outer core tube surface;
• a first reinforcement layer surrounding the outer core tube surface, said first reinforcement layer being formed of one or more filaments of at least a first fiber;
• and
• at least a second fiber reinforcement layer surrounding said first reinforcement layer, said second reinforcement layer being formed of one or more filaments of at least a second fiber,
• wherein said second reinforcement layer is bonded to said first reinforcement layer by a bonding agent, only a portion of the filaments of said first reinforcement layer and of said second reinforcement layer being wetted by said bonding agent, and
• wherein said filaments forming said first reinforcement layer and said filaments forming said second reinforcement layer each are treated with an adhesion promoter.

A flexible hose adapted for conveying fluids under pressure, said hose extending in an axial direction along a central longitudinal axis to an indefinite length, and in a radial direction circumferentially about said longitudinal axis, said hose comprising:

• a core tube having a circumferential inner core tube surface and an opposing circumferential outer core tube surface, said core tube comprising an innermost core tube layer of a chemically-resistant first thermoplastic material which defines said inner core tube surface, and an outermost core tube layer of a second thermoplastic material which defines said outer core tube surface, said second thermoplastic material having a flexural modulus which is lower than the flexural modulus of said first thermoplastic material;
• a first reinforcement layer surrounding the outer core tube surface, said first reinforcement layer being formed of one or more filaments of at least a first fiber;
• and
• at least a second fiber reinforcement layer surrounding said first reinforcement layer, said second reinforcement layer being formed of one or more filaments of at least a second fiber,
• wherein said second reinforcement layer is bonded to said first reinforcement layer by a bonding agent, only a portion of the filaments of said first reinforcement layer and of said second reinforcement layer being wetted by said bonding agent.

A flexible hose adapted for conveying fluids under pressure, said hose extending in an axial direction along a central longitudinal axis to an indefinite length, and in a radial direction circumferentially about said longitudinal axis, said hose comprising:

• a core tube having a circumferential inner core tube surface and an opposing circumferential outer core tube surface;
• a first reinforcement layer surrounding the outer core tube surface, said first reinforcement layer being formed of one or more filaments of at least a first fiber;
• at least a second fiber reinforcement layer surrounding said first reinforcement layer, said second reinforcement layer being formed of one or more filaments of at least a second fiber;
• and
• a cover surrounding said second fiber reinforcement layer, said cover comprising an innermost cover layer of a first thermoplastic material which defines a circumferential interior cover surface, and an outermost cover layer of a second thermoplastic material which defines a circumferential exterior cover surface, said first thermoplastic material having a flexural modulus which is lower than the flexural modulus of said second thermoplastic material, and said second thermoplastic material having a hardness of at least about 60 Shore A durometer,
• wherein said second reinforcement layer is bonded to said first reinforcement layer by a bonding agent, only a portion of the filaments of said first reinforcement layer and of said second reinforcement layer being wetted by said bonding agent.

A flexible hose adapted for conveying fluids under pressure, said hose extending in an axial direction along a central longitudinal axis to an indefinite length, and in a radial direction circumferentially about said longitudinal axis, said hose comprising:

• a core tube having a circumferential inner core tube surface and an opposing circumferential outer core tube surface;
• a first reinforcement layer surrounding the outer core tube surface, said first reinforcement layer being formed from one or more ends of a first yarn comprised of one or more filaments of at least a first fiber;
• and
• at least a second fiber reinforcement layer surrounding said first reinforcement layer, said second reinforcement layer being formed from one or more ends of a second yarn comprised of one or more filaments of at least a second fiber, and being bonded to said first reinforcement layer by a bonding agent, only a portion of the filaments of said first reinforcement layer and of said second reinforcement layer being wetted by said bonding agent,
• wherein said first yarn has an outer course of filaments of said first fiber which defines a circumferential first outer reinforcement surface disposed adjacent said second reinforcement layer, and said second yarn has an inner course of filaments of said second fiber which defines a circumferential second inner reinforcement surface disposed adjacent said first reinforcement layer, and
• wherein substantially only said outer course of filaments of said first reinforcement layer and substantially only said inner course of filaments of said second reinforcement layer is wetted by said bonding agent.

A flexible hose adapted for conveying fluids under pressure, said hose extending in an axial direction along a central longitudinal axis to an indefinite length, and in a radial direction circumferentially about said longitudinal axis, said hose comprising:

• a core tube having a circumferential inner core tube surface and an opposing circumferential outer core tube surface;
• a first reinforcement layer surrounding the outer core tube surface, said first reinforcement layer being formed from one or more ends of a first yarn comprised of a blend or cord of one or more filaments of at least a first fiber filaments and a third fiber different from said first fiber;
• and
• at least a second fiber reinforcement layer surrounding said first reinforcement layer, said second reinforcement layer being formed from one or more ends of a second yarn comprised of a blend or cord of one or more filaments of at least a second fiber and a fourth fiber different from said second fiber,
• wherein said second reinforcement layer is bonded to said first reinforcement layer by a bonding agent, only a portion of the filaments of said first reinforcement layer and of said second reinforcement layer being wetted by said bonding agent, and
• wherein said first and said second fiber are selected to be wetted by said bonding agent, and said third and fourth fibers are selected to be substantially not wetted by said bonding agent.

A flexible hose adapted for conveying fluids under pressure, said hose extending in an axial direction along a central longitudinal axis to an indefinite length, and in a radial direction circumferentially about said longitudinal axis, said hose comprising:

• a core tube having a circumferential inner core tube surface and an opposing circumferential outer core tube surface;
• a first reinforcement layer surrounding the outer core tube surface, said first reinforcement layer being formed from one or more ends of a first yarn comprised of one or more filaments of at least a first fiber, and one or more ends of a third yarn different from said first yarn comprised of filaments of a third fiber different from said first fiber;
• and
• at least a second fiber reinforcement layer surrounding said first reinforcement layer, said second reinforcement layer being formed from one or more ends of a second yarn comprised of one or more filaments of at least a second fiber, and one or more ends of a fourth yarn different from said second yarn comprised of filaments of a fourth fiber different from said second fiber,
• wherein said second reinforcement layer is bonded to said first reinforcement layer by a bonding agent, only a portion of the filaments of said first reinforcement layer and of said second reinforcement layer being wetted by said bonding agent, and
• wherein said first and said second fiber are selected to be wetted by said bonding agent, and said third and fourth fibers being selected to be substantially not wetted by said bonding agent.

A flexible hose adapted for conveying fluids under pressure, said hose extending in an axial direction along a central longitudinal axis to an indefinite length, and in a radial direction circumferentially about said longitudinal axis, said hose comprising:

• a core tube having a circumferential inner core tube surface and an opposing circumferential outer core tube surface;
• a first reinforcement layer surrounding the outer core tube surface, said first reinforcement layer being formed of one or more filaments of at least a first fiber;
• and
• at least a second fiber reinforcement layer surrounding said first reinforcement layer, said second reinforcement layer being formed of one or more filaments of at least a second fiber,
• wherein said second reinforcement layer is bonded to said first reinforcement layer by a bonding agent, only a portion of the filaments of said first reinforcement layer and of said second reinforcement layer being wetted by said bonding agent, and
• wherein the bond between said first and said second reinforcement layer is at least about 6 pli (1.07 kg/linear cm).

A flexible hose adapted for conveying fluids under pressure, said hose extending in an axial direction along a central longitudinal axis to an indefinite length, and in a radial direction circumferentially about said longitudinal axis, said hose comprising:

• a core tube having a circumferential inner core tube surface and an opposing circumferential outer core tube surface;
• a first reinforcement layer surrounding the outer core tube surface, said first reinforcement layer being formed of one or more filaments of at least a first fiber;
• and
• at least a second fiber reinforcement layer surrounding said first reinforcement layer, said second reinforcement layer being formed of one or more filaments of at least a second fiber,
• wherein said second reinforcement layer is bonded to said first reinforcement layer by a bonding agent, only a portion of the filaments of said first reinforcement layer and of said second reinforcement layer being wetted by said bonding agent, and
• wherein said portion of the filaments of said first reinforcement layer and of said second reinforcement layer being wetted by said bonding agent comprises between about 0.5-20% by total weight, number, or volume average of said filaments.

A flexible hose adapted for conveying fluids under pressure, said hose extending in an axial direction along a central longitudinal axis to an indefinite length, and in a radial direction circumferentially about said longitudinal axis, said hose comprising:

• a core tube having a circumferential inner core tube surface and an opposing circumferential outer core tube surface;
• a first reinforcement layer surrounding the outer core tube surface, said first reinforcement layer being formed of one or more filaments of at least a first fiber;
• and
• at least a second fiber reinforcement layer surrounding said first reinforcement layer, said second reinforcement layer being formed of one or more filaments of at least a second fiber,
• wherein said second reinforcement layer is bonded to said first reinforcement layer by a bonding agent which comprises a thermoplastic resin and an adhesion promoter compounded with said thermoplastic resin, only a portion of the filaments of said first reinforcement layer and of said second reinforcement layer being wetted by said bonding agent.

A flexible hose adapted for conveying fluids under pressure, said hose extending in an axial direction along a central longitudinal axis to an indefinite length, and in a radial direction circumferentially about said longitudinal axis, said hose comprising:

• a core tube having a circumferential inner core tube surface and an opposing circumferential outer core tube surface;
• a first reinforcement layer surrounding the outer core tube surface, said first reinforcement layer being formed of one or more filaments of at least a first fiber;
• and
• at least a second fiber reinforcement layer surrounding said first reinforcement layer, said second reinforcement layer being formed of one or more filaments of at least a second fiber,
• wherein said second reinforcement layer is bonded to said first reinforcement layer by a bonding agent which comprises a first resin layer disposed adjacent said first reinforcement layer and a second resin layer different from said first resin layer disposed adjacent said second reinforcement layer, only a portion of the filaments of said first reinforcement layer and of said second reinforcement layer being wetted by said bonding agent.

A flexible hose adapted for conveying fluids under pressure, said hose extending in an axial direction along a central longitudinal axis to an indefinite length, and in a radial direction circumferentially about said longitudinal axis, said hose comprising:

• a core tube having a circumferential inner core tube surface and an opposing circumferential outer core tube surface;
• a first reinforcement layer surrounding the outer core tube surface, said first reinforcement layer being formed of one or more filaments of at least a first fiber;
• and
• at least a second fiber reinforcement layer surrounding said first reinforcement layer, said second reinforcement layer being formed of one or more filaments of at least a second fiber,
• wherein said second reinforcement layer is bonded to said first reinforcement layer by a bonding agent which comprises a thermoplastic resin filled with an electrically-conductive filler to render said resin electrically-conductive, only a portion of the filaments of said first reinforcement layer and of said second reinforcement layer being wetted by said bonding agent.

A flexible hose adapted for conveying fluids under pressure, said hose extending in an axial direction along a central longitudinal axis to an indefinite length, and in a radial direction circumferentially about said longitudinal axis, said hose comprising:

• a core tube having a circumferential inner core tube surface and an opposing circumferential outer core tube surface;
• a first reinforcement layer surrounding the outer core tube surface, said first reinforcement layer being formed of one or more filaments of at least a first fiber;
• and
• at least a second fiber reinforcement layer surrounding said first reinforcement layer, said second reinforcement layer being formed of one or more filaments of at least a second fiber,
• wherein said second reinforcement layer is bonded to said first reinforcement layer by a bonding agent which comprises a thermoplastic resin, only a portion of the filaments of said first reinforcement layer and of said second reinforcement layer being wetted by said bonding agent, and
• wherein said thermoplastic resin and said filaments forming said first and said second reinforcement layer each are generally hydrophobic, said hose thereby being rendered electrically non-conductive.