Die and method for impregnating fiber rovings

A die and method for impregnating at least one fiber roving with a polymer resin are disclosed. In one embodiment, the die includes an impregnation section including an impregnation zone configured to impregnate the roving with the resin, the impregnation zone including a plurality of contact surfaces. The die further includes a perturbation positioned on at least one of the plurality of contact surfaces, the perturbation configured to interact with the roving. In one embodiment, the method includes coating a fiber roving with a polymer resin. The method further includes traversing the coated roving through an impregnation zone to impregnate the roving with the resin. The impregnation zone includes a plurality of contact surfaces. The method further includes interacting the coated roving with a perturbation positioned on at least one of the plurality of contact surfaces.

Asymmetric fiber reinforced polymer tape

An asymmetric tape and a system and method for impregnating at least one fiber roving with a polymer resin to form an asymmetric tape are provided. The asymmetric tape includes a polymer resin, and a plurality of fibers embedded in the polymer resin to form a fiber reinforced polymer material. The fiber reinforced polymer material includes a first surface and an opposing second surface. The fibers are disposed in the fiber reinforced polymer material to form a resin rich portion and a fiber rich portion. The resin rich portion includes the first surface and the fiber rich portion includes the second surface.

Die with flow diffusing gate passage and method for impregnating same fiber rovings

A die and a method for impregnating fiber rovings with a polymer resin are disclosed. The die includes a manifold assembly ( 220 ), an impregnation zone ( 250 ), and a gate passage ( 270 ). The manifold assembly ( 220 ) flows the resin therethrough, and includes a channel ( 222 ). The impregnation zone ( 250 ) is in fluid communication with the manifold assembly ( 220 ), and is configured to impregnate the roving with the resin. The gate passage ( 270 ) is between the manifold assembly ( 220 ) and the impregnation zone ( 250 ), and flows the resin from the manifold assembly ( 220 ) such that the resin coats the roving. The gate passage ( 270 ) includes a projection ( 300 ). The projection ( 300 ) is configured to diffuse resin flowing through the gate passage ( 270 ).

Impregnation section with upstream surface and method for impregnation fiber rovings

An impregnation section of a die and a method for impregnating at least one fiber roving with a polymer resin are disclosed. The impregnation section includes an impregnation zone configured to impregnate the roving with the resin and a gate passage in fluid communication with the impregnation zone for flowing the resin therethrough such that the resin coats the roving. Additionally, the impregnation section includes a surface disposed upstream of the impregnation zone in a run direction of the roving for contacting the roving. The method includes traversing at least one fiber roving over a surface, flowing a polymer resin through a gap, the gap being in the range between approximately 0.1 millimeters and approximately 4 millimeters, coating the roving with the resin, and traversing the coated roving through an impregnation zone to impregnate the roving with the resin.

METHOD OF APPLYING AN ABRASION RESISTANT FINISH ONTO A PULTRUSION SUBSTRATE

A lineal product includes a substrate having an outer surface, a thermoplastic base layer applied to the outer surface, and a second thermoplastic layer applied over at least a portion of the base layer, the second layer having a hardness of at least 1 H pencil hardness. 117-. (canceled)18. A method comprising:receiving or forming, a substrate having a solid outer surface: extruding a molten first thermoplastic material onto the solid outer surface of the substrate with the crosshead extrusion die to form a molten base layer having a base-layer inner surface on the solid outer surface of the substrate and a base-layer outer interface; and', 'coextruding a molten second thermoplastic material comprising polymethyl methacylate with the crosshead extrusion die to form a molten outer layer having an outer-layer interface in intimate contact with the base-layer outer interface and an outer-layer outer surface: and, 'coextruding a multi-layer coating directly onto the solid outer surface of the substrate with a crosshead extrusion die, wherein the coextruding comprisesallowing the molten first thermoplastic material of the molten base layer and the molten second thermoplastic material of the molten outer layer to solidify to form a solid thermoplastic base layer in intimate contact with the solid outer surface of the substrate and a solid polymethyl methacrylate outer layer in contact with the solid thermoplastic base layer and forming a solid interface between the solid thermoplastic base layer and the solid polymethyl methacrylate outer layer such that the solid polymethyl methacyrylate outer layer has a hardness of at least 1 H pencil hardness.19. (canceled)20. A method according to claim 18 , further comprising mixing a plurality of micro-beads into the molten second thermoplastic material before the coextruding of the molten first thermoplastic material and the molten second thermoplastic material with the crosshead extrusion die so that the solid polymethyl ...

System and method for impregnating fiber rovings

A die and method for impregnating at least one fiber roving with a polymer resin are disclosed. The die includes an impregnation section. The impregnation section includes an impregnation zone configured to impregnate the roving with the resin. The impregnation zone includes a plurality of contact surfaces. At least one of the plurality of contact surfaces is configured such that a normal force of the roving is less than or equal to a lift force of the resin at an impregnation location on the contact surface during impregnation of the roving with the resin by the contact surface.

Die and Method for Impregnating Fiber Rovings

A die and method for impregnating at least one fiber roving with a polymer resin are disclosed. The die includes an impregnation section. The impregnation section includes an impregnation zone configured to impregnate the roving with the resin. The impregnation zone includes a plurality of contact surfaces. At least one of the plurality of contact surfaces is configured such that a normal force of the roving is less than or equal to a lift force of the resin at an impregnation location on the contact surface during impregnation of the roving with the resin by the contact surface. 111.-. (canceled)12. A method for impregnating at least one fiber roving with a polymer resin , the method comprising:flowing a polymer resin through a manifold assembly of a die, the manifold assembly comprising a plurality of branched runners;coating at least one fiber roving with the resin; andtraversing the coated roving through an impregnation zone of the die to impregnate the roving with the resin, the impregnation zone comprising a plurality of contact surfaces,wherein at least one of the plurality of contact surfaces is configured such that a normal force of the roving is less than or equal to a lift force of the resin at an impregnation location on the contact surface during impregnation of the roving with the resin by the contact surface.13. The method of claim 12 , wherein the at least one of the plurality of contact surfaces is a final contact surface in a run direction of the roving.14. The method of claim 12 , wherein no contact occurs between the roving and the at least one of the plurality of contact surfaces during impregnation of the roving with the resin by the contact surface.15. The method of claim 12 , wherein the impregnation location comprises a peak of the contact surface.16. The method of claim 12 , wherein the normal three is calculated using the equation:{'br': None, 'i': A', 'h, 'α=sin()*'}wherein a is the normal force, A is an angle at which the roving ...

Methods for impregnating fiber rovings with polymer resin

An impregnation section of a die and a method for impregnating at least one fiber roving with a polymer resin are disclosed. The impregnation section includes an impregnation zone configured to impregnate the roving with the resin and a gate passage in fluid communication with the impregnation zone for flowing the resin therethrough such that the resin coats the roving. Additionally, the impregnation section includes a surface disposed upstream of the impregnation zone in a run direction of the roving for contacting the roving. The method includes traversing at least one fiber roving over a surface, flowing a polymer resin through a gap, the gap being in the range between approximately 0.1 millimeters and approximately 4 millimeters, coating the roving with the resin, and traversing the coated roving through an impregnation zone to impregnate the roving with the resin.

Manufacturing and Installation of Insulated Pipes or Elements Thereof

Insulated pipe systems or assemblies include a particulate, composite or monolithic insulating aerogel material. Techniques for installing or manufacturing such systems or assemblies are described, as are components useful in the installation or manufacture processes. 14.-. canceled5. An insulated pipe structure comprising:a. a pipe having an outer surface;b. an insulating material wrapped over the outer surface to form an insulating layer; andc. at least one layer surrounding an exterior surface of the insulating layer, wherein the at least one layer compresses the insulating layer.6. The insulated pipe structure of claim 5 , wherein the at least one layer is formed by extrusion.7. The insulated pipe structure of claim 5 , further comprising a protective layer at an outer surface of the at least one layer.8. The insulated pipe structure of claim 5 , wherein the insulating material includes aerogel.9. An insulated pipe structure comprising:a. a pipe having an outer surface;b. an insulating material at the outer surface, wherein the insulating material is in a notched or a bubble wrap container; andc. an optional cover layer.10. A method for preparing a pipe-in-pipe assembly claim 5 , the method comprisingexpanding a flow pipe to reduce an annular space between the flow pipe and an outer pipe, thereby compressing an insulating material present in the annular space.11. The method of claim 10 , further comprising introducing the insulating material into the annular space.12. The method of claim 10 , wherein the insulating material is a particulate or composite material that includes aerogel.13. The method of claim 10 , wherein the flow pipe is expanded by a tubing expander or by a swaging tool.14. The method of claim 10 , wherein the flow pipe is fabricated from a polymeric material.15. The method of claim 14 , wherein the flow pipe is expanded using a heated expanding tool.16. The method of claim 15 , further comprising contacting the heated flow pipe with a cooling ...

Impregnation Section with Upstream Surface and Method for Impregnating Fiber Rovings

An impregnation section of a die and a method for impregnating at least one fiber roving with a polymer resin are disclosed. The impregnation section includes an impregnation zone configured to impregnate the roving with the resin and a gate passage in fluid communication with the impregnation zone for flowing the resin therethrough such that the resin coats the roving. Additionally, the impregnation section includes a surface disposed upstream of the impregnation zone in a run direction of the roving for contacting the roving. The method includes traversing at least one fiber roving over a surface, flowing a polymer resin through a gap, the gap being in the range between approximately 0.1 millimeters and approximately 4 millimeters, coating the roving with the resin, and traversing the coated roving through an impregnation zone to impregnate the roving with the resin. 1. An impregnation section of a die for impregnating at least one fiber roving with a polymer resin , the impregnation section comprising:an impregnation zone configured to impregnate the roving with the resin;a gate passage in fluid communication with the impregnation zone for flowing the resin therethrough such that the resin coats the roving; anda surface disposed upstream of the impregnation zone in a run direction of the roving for contacting the roving.2. The impregnation section of claim 1 , wherein the surface has a curvilinear portion proximate the gate passage.3. The impregnation section of claim 1 , wherein a gap is defined between an outlet of the gate passage and an upper surface of the roving claim 1 , and wherein the gap is in the range between approximately 0.1 millimeters and approximately 4 millimeters.4. The impregnation section of claim 1 , wherein the gate passage extends vertically.5. The impregnation section of claim 1 , wherein at least a portion of the gate passage has a decreasing cross-sectional profile in a flow direction of the resin.6. The impregnation section of claim 1 ...

Die and Method for Impregnating Fiber Rovings

A die and method for impregnating at least one fiber roving with a polymer resin are disclosed. In one embodiment, the die includes an impregnation section including an impregnation zone configured to impregnate the roving with the resin, the impregnation zone including a plurality of contact surfaces. The die further includes a perturbation positioned on at least one of the plurality of contact surfaces, the perturbation configured to interact with the roving. In one embodiment, the method includes coating a fiber roving with a polymer resin. The method further includes traversing the coated roving through an impregnation zone to impregnate the roving with the resin. The impregnation zone includes a plurality of contact surfaces. The method further includes interacting the coated roving with a perturbation positioned on at least one of the plurality of contact surfaces. 1. A die for impregnating at least one fiber roving with a polymer resin , the impregnation section comprising:an impregnation section comprising an impregnation zone configured to impregnate the roving with the resin, the impregnation zone comprising a plurality of contact surfaces; anda perturbation positioned on at least one of the plurality of contact surfaces, the perturbation configured to interact with the roving.2. The die of claim 1 , wherein the perturbation is a protrusion claim 1 , the protrusion extending from one of the plurality of contact surfaces and configured to disturb a run direction of the roving.3. The die of claim 1 , wherein the perturbation is a depression claim 1 , the depression defined in one of the plurality of contact surfaces and configured to disturb a run direction of the roving.4. The die of claim 1 , wherein the perturbation is a channel defined in one of the plurality of contact surfaces and positioned for running the roving therethrough.5. The die of claim 1 , further comprising a plurality of perturbations.6. The die of claim 1 , wherein the impregnation zone ...

Thermoplastic Prepreg Containing Continuous and Long Fibers

A prepreg that contains a plurality of unidirectionally aligned continuous fibers embedded within a thermoplastic polymer matrix is provided. In addition to continuous fibers, the prepreg also contains a plurality of long fibers that are combined with the continuous fibers so that they are randomly distributed within the thermoplastic matrix. As a result, at least a portion of the long fibers become oriented at an angle (e.g., perpendicular) relative to the direction of the continuous fibers. Through such orientation, the long fibers can substantially increase the mechanical properties of the prepreg in the transverse direction (e.g., strength) and thus achieve a more isotropic material. Although unique isotropic prepregs are one aspect of the present invention, it should be understood that this is not a requirement. In fact, one notable feature of the present invention is the ability to tailor the mechanical properties of the prepreg for an intended application by selectively controlling certain process parameters, such as the type of long fibers employed, the type of continuous fibers employed, the concentration of the long fibers, the concentration of the continuous fibers, the thermoplastic resin(s) employed, etc. 1. A thermoplastic prepreg comprising:a plurality of continuous fibers that are substantially oriented in a longitudinal direction, the continuous fibers constituting from about 10 wt. % to about 80 wt. % of the prepreg;a plurality of randomly distributed long fibers, at least a portion of which are oriented at an angle relative to the longitudinal direction, the long fibers constituting from about 2 wt. % to about 35 wt. % of the prepreg; anda resinous matrix that contains one or more thermoplastic polymers and within which the continuous fibers and long fibers are embedded, wherein the thermoplastic polymers constitute from about 10 wt. % to about 80 wt. % of the prepreg;wherein the ratio of the maximum tensile stress of the prepreg in the ...

Die and Method for Impregnating Fiber Rovings

A die and method for impregnating at least one fiber roving with a polymer resin are disclosed. The die includes an impregnation section. The impregnation section includes an impregnation zone configured to impregnate the roving with the resin. The impregnation zone includes a plurality of contact surfaces. At least one of the plurality of contact surfaces is configured such that a normal force of the roving is less than or equal to a lift force of the resin at an impregnation location on the contact surface during impregnation of the roving with the resin by the contact surface. 1. A die for impregnating at least one fiber roving with a polymer resin , the die comprising:an impregnation section, the impregnation section comprising an impregnation zone configured to impregnate the roving with the resin, the impregnation zone comprising a plurality of contact surfaces,wherein at least one of the plurality of contact surfaces is configured such that a normal force of the roving is less than or equal to a lift force of the resin at an impregnation location on the contact surface during impregnation of the roving with the resin by the contact surface.2. The die of claim 1 , wherein the at least one of the plurality of contact surfaces is a final contact surface in a run direction of the roving.3. The die of claim 1 , wherein no contact occurs between the roving and the at least one of the plurality of contact surfaces during impregnation of the roving with the resin by the contact surface.4. The die of claim 1 , wherein the impregnation location comprises a peak of the contact surface.7. The die of claim 1 , wherein each of the plurality of contact surfaces is configured such that the roving traverses the contact surface at an angle in the range between 1 degree and 30 degrees.8. The die of claim 1 , wherein the at least one of the plurality of contact surfaces is configured such that the roving traverses the at least one of the plurality of contact surfaces at an angle ...

Impregnation Section of Die for Impregnating Fiber Rovings

A die and a method for impregnating at least one fiber roving with a polymer resin are disclosed. The die includes an impregnation section comprising an impregnation zone configured to impregnate the roving with the resin. The die further includes a passage at least partially defined in the impregnation section and in fluid communication with the impregnation zone, and a pump in fluid communication with the passage. The method includes coating at least one fiber roving with a polymer resin, traversing the coated roving through an impregnation zone of an impregnation section to impregnate the roving with the resin, and applying an external pressure to the impregnation zone. 1. A die for impregnating at least one fiber roving with a polymer resin , the die comprising:an impregnation section comprising an impregnation zone configured to impregnate the roving with the resin;a passage at least partially defined in the impregnation section and in fluid communication with the impregnation zone; anda pump in fluid communication with the passage.2. The die of claim 1 , wherein the pump is a negative pressure pump.3. The die of claim 1 , wherein the pump is a positive pressure pump.4. The die of claim 1 , wherein the passage comprises an outlet defined in the impregnation zone.5. The die of claim 4 , wherein the passage comprises a plurality of outlets.6. The die of claim 1 , wherein the impregnation section comprises a first impregnation plate and a second impregnation plate each defining the impregnation zone claim 1 , wherein the passage is at least partially defined in the first impregnation plate.7. The die of claim 6 , wherein the first impregnation plate comprises a plurality of peaks and a plurality of valleys claim 6 , and wherein an outlet of the passage is defined in a valley.8. The die of claim 1 , further comprising a plurality of passages.9. The die of claim 8 , further comprising a plurality of pumps.10. The die of claim 9 , wherein each of the pumps is ...

Impregnation Section and Method for Impregnating Fiber Rovings

An impregnation section of a die and a method for impregnating at least one fiber roving with a polymer resin are disclosed. The impregnation section includes an impregnation zone configured to impregnate the roving with the resin. The impregnation zone includes a plurality of contact surfaces, at least one of the plurality of contact surfaces defining a cut-away portion downstream in a run direction of the roving of a point-of-contact for the at least one of the plurality of contact surfaces. The at least one of the plurality of contact surfaces further includes an edge defined by the cut-away portion. Excess material build up is reduced by the cut-away portion. 1. An impregnation section of a die for impregnating at least one fiber roving with a polymer resin , the impregnation section comprising:an impregnation zone configured to impregnate the roving with the resin, the impregnation zone comprising a plurality of contact surfaces, at least one of the plurality of contact surfaces defining a cut-away portion downstream in a run direction of the roving of a point-of-contact for the at least one of the plurality of contact surfaces, the at least one of the plurality of contact surfaces further comprising an edge defined by the cut-away portion,wherein excess material build up is reduced by the cut-away portion.2. The impregnation section of claim 1 , wherein the at least one of the plurality of contact surfaces further comprises a lobe-shaped portion for impregnated the roving with the resin claim 1 , the lobe-shaped portion disposed upstream of the cut-away portion in the run direction of the roving and defining the point-of-contact.3. The impregnation section of claim 1 , wherein a face of the at least one of the plurality of contact surfaces defined by the cut-away portion extends vertically.4. The impregnation section of claim 1 , wherein a face of the at least one of the plurality of contact surfaces defined by the cut-away portion extends at an angle to ...

Pipe Section Having Bonded Composite Barrier Layer

Pipe sections and methods for forming pipe sections are disclosed. A pipe section includes a hollow body formed from a metal material, the hollow body having an inner surface and an outer surface, the inner surface defining an interior. The pipe section further includes a barrier layer surrounding and bonded to the hollow body, the barrier layer having an inner surface and an outer surface. The barrier layer is formed from a continuous fiber reinforced thermoplastic material. Such pipe sections may be lightweight and flexible while exhibiting improved strength characteristics. 1. A pipe section , comprising:a hollow body formed from a metal material, the hollow body having an inner surface and an outer surface, the inner surface defining an interior;a barrier layer surrounding and bonded to the hollow body, the barrier layer having an inner surface and an outer surface, the barrier layer formed from a continuous fiber reinforced thermoplastic material.2. The pipe section of claim 1 , wherein the barrier layer is a tape.3. The pipe section of claim 2 , wherein the tape is wrapped generally helically around the hollow body with respect to a longitudinal axis of the hollow body.4. The pipe section of claim 1 , wherein the continuous fibers are generally unidirectional.5. The pipe section of claim 1 , wherein the hollow body is formed from a steel.6. The pipe section of claim 1 , wherein the continuous fibers are carbon fibers.7. The pipe section of claim 1 , wherein the continuous fibers are glass fibers.8. The pipe section of claim 1 , wherein the continuous fibers are aramid fibers.9. The pipe section of claim 1 , wherein the thermoplastic material is a polyarylene sulfide composition.10. The pipe section of claim 9 , wherein the polyarylene sulfide composition comprises a polyarylene sulfide and a crosslinked impact modifier.11. The pipe section of claim 1 , wherein the hollow body is formed from a plurality of interlocking strips.12. The pipe section of claim 1 , ...

Pipe Section Having Unbonded Composite Barrier Layer

Pipe sections and methods for forming pipe sections are disclosed. A pipe section includes a hollow body formed from a polymer material, the hollow body having an inner surface and an outer surface, the inner surface defining an interior. The pipe section further includes a barrier layer surrounding and unbonded from the hollow body, the barrier layer having an inner surface and an outer surface. The barrier layer is formed from a continuous fiber reinforced thermoplastic material. Such pipe sections may be lightweight and flexible while exhibiting improved strength characteristics. 1. A pipe section , comprising:a hollow body formed from a polymer material, the hollow body having an inner surface and an outer surface, the inner surface defining an interior;a barrier layer surrounding and unbonded from the hollow body, the barrier layer having an inner surface and an outer surface, the barrier layer formed from a continuous fiber reinforced thermoplastic material.2. The pipe section of claim 1 , wherein the barrier layer is a tape.3. The pipe section of claim 2 , wherein the tape is wrapped generally helically around the hollow body with respect to a longitudinal axis of the hollow body.4. The pipe section of claim 1 , wherein the continuous fibers are generally unidirectional.5. The pipe section of claim 1 , wherein the hollow body is formed from a thermoplastic material.6. The pipe section of claim 1 , wherein the continuous fibers are carbon fibers.7. The pipe section of claim 1 , wherein the continuous fibers are glass fibers.8. The pipe section of claim 1 , wherein the continuous fibers are aramid fibers.9. The pipe section of claim 1 , wherein the thermoplastic material is a polyarylene sulfide composition.10. The pipe section of claim 9 , wherein the polyarylene sulfide composition comprises a polyarylene sulfide and a crosslinked impact modifier.11. The pipe section of claim 1 , wherein the barrier layer is a plurality of barrier layers.12. A method for ...

Asymmetric Fiber Reinforced Polymer Tape

An asymmetric tape and a system and method for impregnating at least one fiber roving with a polymer resin to form an asymmetric tape are provided. The asymmetric tape includes a polymer resin, and a plurality of fibers embedded in the polymer resin to form a fiber reinforced polymer material. The fiber reinforced polymer material includes a first surface and an opposing second surface. The fibers are disposed in the fiber reinforced polymer material to form a resin rich portion and a fiber rich portion. The resin rich portion includes the first surface and the fiber rich portion includes the second surface. 1. An asymmetric tape , comprising:a polymer resin; anda plurality of fibers embedded in the polymer resin to form a fiber reinforced polymer material, the fiber reinforced polymer material comprising a first surface and an opposing second surface,wherein the fibers are disposed in the fiber reinforced polymer material to form a resin rich portion and a fiber rich portion, the resin rich portion including the first surface, the fiber rich portion including the second surface.2. The asymmetric tape of claim 1 , wherein the resin rich portion comprises at least 75% resin by volume.3. The asymmetric tape of claim 1 , wherein the resin rich portion comprises at least 95% resin by volume.4. The asymmetric tape of claim 1 , wherein the fiber reinforced polymer material has a fiber volume fraction of between approximately 40% and approximately 60%.5. The asymmetric tape of claim 1 , wherein the fiber reinforced polymer material has a void fraction of approximately 2% or less.6. The asymmetric tape of claim 1 , wherein the polymer resin is a thermoplastic resin.7. The asymmetric tape of claim 1 , wherein the polymer resin is polyether ether ketone.8. The asymmetric tape of claim 1 , wherein the fibers are carbon fibers.9. The asymmetric tape of claim 1 , wherein the thermoplastic resin is a polyamide.10. The asymmetric tape of claim 1 , wherein the fibers are S-glass ...

Die and Method for Impregnating Fiber Rovings

A die and a method for impregnating fiber rovings () with a polymer resin () are disclosed. The die includes a manifold assembly (), an impregnation zone, and a gate passage (). The manifold assembly flows the resin () therethrough, and includes a plurality of branched runners (). The impregnation zone is in fluid communication with the manifold assembly, and is configured to impregnate the roving with the resin. The gate passage () is between the manifold assembly and the impregnation zone (), and flows the resin from the manifold assembly such that the resin coats the roving. The method includes flowing a polymer resin through a manifold assembly. The method further includes coating at least one fiber roving with the resin, and traversing the coated roving through an impregnation zone to impregnate the roving with the resin. The roving is under a tension of from about 5 Newtons to about Newtons within the impregnation zone. 1. A die for impregnating at least one fiber roving with a polymer resin , the die comprising:a manifold assembly for flowing the resin therethrough, the manifold assembly comprising a plurality of branched runners;an impregnation zone in fluid communication with the manifold assembly, the impregnation zone configured to impregnate the roving with the resin; anda gate passage between the manifold assembly and the impregnation zone for flowing the resin from the manifold assembly such that the resin coats the roving.2. The die of claim 1 , wherein the plurality of branched runners have a symmetrical orientation along a central axis.3. The die of claim 1 , wherein the plurality of branched runners comprises a first branched runner group.4. The die of claim 3 , wherein the plurality of branched runners further comprises a second branched runner group diverging from the first branched runner group.5. The die of claim 4 , wherein the plurality of branched runners further comprises a third branched runner group diverging from the second branched ...

Impregnation Section of Die and Method for Impregnating Fiber Rovings

An impregnation section () and a method for impregnating fiber rovings () with a polymer resin () are disclosed. The impregnation section () includes an impregnation zone () and a gate passage (). The impregnation zone () is configured to impregnate the plurality of rovings () with the resin (). The gate passage () is in fluid communication with the impregnation zone () for flowing the resin therethrough such that the resin impinges on a surface () of each of the plurality of rovings () facing the gate passage () and substantially uniformly coats the plurality of rovings. The method includes impinging a polymer resin () onto a surface of a plurality of fiber rovings (), and substantially uniformly coating the plurality of rovings with the resin. The method further includes traversing the plurality of coated rovings through an impregnation zone (). Each of the plurality of rovings () is under a tension of from about 5 Newtons to about 300 Newtons within the impregnation zone (). 1. An impregnation section of a die for impregnating a plurality of fiber rovings with a polymer resin , the impregnation section comprising:an impregnation zone configured to impregnate the plurality of rovings with the resin; anda gate passage in fluid communication with the impregnation zone for flowing the resin therethrough such that the resin impinges on a surface of each of the plurality of rovings facing the gate passage and substantially uniformly coats the plurality of rovings.2. The impregnation section of claim 1 , wherein the gate passage extends vertically to the impregnation zone.3. The impregnation section of claim 1 , wherein at least a portion of the gate passage has a decreasing cross-sectional profile in a flow direction of the resin.4. The impregnation section of claim 1 , wherein the impregnation zone comprises a plurality of contact surfaces.5. The impregnation section of claim 4 , wherein the impregnation zone comprises between 2 and 50 contact surfaces.6. The ...

Impregnation Section with Rollers and Method for Impregnating Fiber Rovings

An impregnation section of a die () and a method for impregnating at least one fiber roving with a polymer resin are disclosed. The impregnation section includes an impregnation zone () configured to impregnate the roving with the resin. The impregnation zone () includes a plurality of contact surfaces (). The impregnation section further includes a roller () configured to impregnate the roving with the resin. The roller () is rotatable about a central axis. The method includes coating a fiber roving with a polymer resin. The method additionally includes traversing the coated roving through a impregnation zone () to impregnate the roving with the resin. The impregnation zone () includes a plurality of contact surfaces (). The method further includes traversing the coated roving past a roller () to impregnate the roving with the resin. 1. An impregnation section of a die for impregnating at least one fiber roving with a polymer resin , the impregnation section comprising:an impregnation zone configured to impregnate the roving with the resin, the impregnation zone comprising a plurality of contact surfaces; anda roller configured to impregnate the roving with the resin, the roller rotatable about a central axis.2. The impregnation section of claim 1 , further comprising a plurality of rollers.3. The impregnation section of claim 2 , wherein the plurality of rollers comprises at least one pair of rollers claim 2 , the at least one pair of rollers configured to impregnate the roving with the resin therebetween.4. The impregnation section of claim 1 , wherein the roller is freely rotational.5. The impregnation section of claim 1 , wherein the roller is rotationally driven.6. The impregnation section of claim 1 , wherein the roller is adjustable perpendicularly to a run direction of the roving.7. The impregnation section of claim 1 , wherein the roller is positioned upstream of the plurality of contact surfaces in a run direction of the roving.8. The impregnation section ...

METHOD OF APPLYING AN ABRASION RESISTANT FINISH ONTO A PULTRUSION SUBSTRATE

A lineal product includes a composite pultruded substrate having a solid outer surface, and a multi-layer coating extruded directly onto the outer surface. The coating comprises a solid extruded base layer comprising a first thermoplastic material extruded onto the outer surface, the base layer having a base-layer inner surface in intimate contact with the outer surface and a base-layer outer interface. The coating further comprises a solid extruded outer layer comprising a second thermoplastic material comprising polymethyl methacrylate extruded onto the first thermoplastic material, the solid extruded outer layer having an outer-layer interface in intimate contact with the base-layer outer interface and an outer-layer outer surface, wherein the intimate contact between the base-layer outer interface and the outer-layer interface forms a solid interface between the base layer and the outer layer. The solid extruded outer layer has a hardness of at least 1H pencil hardness. 1. A lineal product comprising:a composite pultruded substrate having a solid outer surface; and a solid extruded base layer comprising a first thermoplastic material extruded onto the solid outer surface, the solid extruded base layer having a base-layer inner surface in intimate contact with the solid outer surface of the composite pultruded substrate and a base-layer outer interface; and', 'a solid extruded outer layer comprising a second thermoplastic material comprising polymethyl methacrylate extruded onto the first thermoplastic material of the base layer, the solid extruded outer layer having an outer-layer interface in intimate contact with the base-layer outer interface and an outer-layer outer surface, wherein the intimate contact between the base-layer outer interface and the outer-layer interface forms a solid interface between the solid extruded base layer and the solid extruded outer layer,', 'wherein the solid extruded outer layer has a hardness of at least 1H pencil hardness., 'a ...

Die with Flow Diffusing Gate Passage and Method for Impregnating Same Fiber Rovings

A die and a method for impregnating fiber rovings with a polymer resin are disclosed. The die includes a manifold assembly (), an impregnation zone (), and a gate passage (). The manifold assembly () flows the resin therethrough, and includes a channel (). The impregnation zone () is in fluid communication with the manifold assembly (), and is configured to impregnate the roving with the resin. The gate passage () is between the manifold assembly () and the impregnation zone (), and flows the resin from the manifold assembly () such that the resin coats the roving. The gate passage () includes a projection (). The projection () is configured to diffuse resin flowing through the gate passage (). 1. A die for impregnating at least one fiber roving with a polymer resin , the die comprising:a manifold assembly for flowing the resin therethrough, the manifold assembly comprising a channel;an impregnation zone in fluid communication with the manifold assembly, the impregnation zone configured to impregnate the roving with the resin; anda gate passage between the manifold assembly and the impregnation zone for flowing the resin from the manifold assembly such that the resin coats the roving, the gate passage comprising a projection configured to diffuse resin flowing through the gate passage.2. The die of claim 1 , further comprising a plurality of projections.3. The die of claim 2 , wherein the plurality of projections are spaced apart to define a plurality of passages therebetween.4. The die of claim 1 , wherein the projection has a tapered cross-sectional profile in a flow direction of the resin through the gate passage.5. The die of claim 1 , wherein the projection includes an outer surface and at least one side surface claim 1 , the at least one side surface extending between the outer surface and an inner wall of the gate passage claim 1 , and wherein the at least one side surface is tapered towards the outer surface.6. The die of claim 1 , wherein the manifold ...

Die and Method for Impregnating Fiber Rovings

A die and method for impregnating at least one fiber roving with a polymer resin are disclosed. In one embodiment, the die includes an impregnation section including an impregnation zone configured to impregnate the roving with the resin, the impregnation zone including a plurality of contact surfaces. The die further includes a perturbation positioned on at least one of the plurality of contact surfaces, the perturbation configured to interact with the roving. In one embodiment, the method includes coating a fiber roving with a polymer resin. The method further includes traversing the coated roving through an impregnation zone to impregnate the roving with the resin. The impregnation zone includes a plurality of contact surfaces. The method further includes interacting the coated roving with a perturbation positioned on at least one of the plurality of contact surfaces. 117-. (canceled)18. A method for impregnating at least one fiber roving with a polymer resin , the method comprising:coating a fiber roving with a polymer resin;traversing the coated roving through an impregnation zone to impregnate the roving with the resin, the impregnation zone comprising a plurality of contact surfaces; and,interacting the coated roving with a perturbation positioned on at least one of the plurality of contact surfaces.19. The method of claim 18 , wherein interacting the coated roving with a perturbation comprises traversing the coated roving over a protrusion claim 18 , the protrusion extending from one of the plurality of contact surfaces and configured to disturb a run direction of the roving.20. The method of claim 18 , wherein interacting the coated roving with a perturbation comprises traversing the coated roving through a depression claim 18 , the depression defined in one of the plurality of contact surfaces and configured to disturb a run direction of the roving.21. The method of claim 18 , wherein interacting the coated roving with a perturbation comprises traversing ...

Impregnation Section with Tension Adjustment Device and Method for Impregnating Fiber Rovings

An impregnation section of a die () and a method for impregnating at least one fiber roving with a polymer resin are disclosed. The impregnation section includes an impregnation zone () configured to impregnate the roving with the resin. The impregnation zone () includes a plurality of contact surfaces (). The impregnation section further includes a device () positioned upstream of the impregnation zone () in a run direction of the roving. The device () is configured to reduce tension in the roving. The method includes tensioning a fiber roving, reducing the tension in the roving, coating the roving with a polymer resin, and traversing the coated roving through an impregnation zone () to impregnate the roving with the resin. 1. An impregnation section of a die for impregnating at least one fiber roving with a polymer resin , the impregnation section comprising:an impregnation zone configured to impregnate the roving with the resin, the impregnation zone comprising a plurality of contact surfaces; anda device positioned upstream of the impregnation zone in a run direction of the roving and configured to reduce tension in the roving.2. The impregnation section of claim 1 , wherein the device is a first device claim 1 , and further comprising a second device positioned downstream of the first device in the run direction claim 1 , the second device configured to increase the tension in the roving.3. The impregnation section of claim 2 , wherein the second device is positioned downstream of the impregnation zone.4. The impregnation section of claim 2 , wherein the second device is positioned within the impregnation zone.5. The impregnation section of claim 1 , wherein the device is a plurality of rollers each rotatable about a central axis.6. The impregnation section of claim 5 , wherein the plurality of rollers comprises a pair of rollers claim 5 , the pair of rollers oppositely aligned with respect to the roving.7. The impregnation section of claim 5 , wherein at least ...

IMPREGNATION SECTION WITH TENSION ADJUSTMENT DEVICE AND METHOD FOR IMPREGNATING FIBER ROVINGS

An extruder () and a method for producing high-fiber volume reinforced thermoplastic resin structures (), as well as a tape () having opposing resin rich portions () and a fiber rich portion () disposed therebetween and a method for impregnating at least one fiber roving () with a polymer resin to form a tape ( The extruder () includes an impregnation die () having a channel () that applies pressurized molten thermoplastic resin to a plurality of rovings () drawn through the channel (), and a die () faceplate () facing the downstream side () of said die (). The faceplate () has a plurality of sizing holes () or a slot () arranged along a line that the resin-impregnated rovings () are simultaneously drawn through that remove excess resin and pultrude the resin-impregnated rovings () into rod-shaped or sheet-shaped structures. The faceplate () is spaced apart from the downstream side () of the die () to provide a gap () between the die () and a back side of the faceplate (). 1. A thermoplastic extruder for producing fiber-reinforced resin structures , comprising:a impregnation die having a channel that applies pressurized molten resin to an elongated roving of fibers drawn through the channel, the die having an upstream side including an opening that receives the elongated roving of fibers, and a downstream side having an opening that a resin-impregnated roving is drawn from; anda die faceplate facing the downstream side of said die, the faceplate having at least one opening that the resin-impregnated roving is drawn through that removes excess resin and pultrudes the resin-impregnated roving into a desired shape,wherein the faceplate is spaced apart from the downstream side of the die to provide a gap between the die and an upstream side of the faceplate that allows excess resin removed from the resin-impregnated roving to freely backflow from said opening without pressure build up.2. The extruder for producing fiber-reinforced resin structures of claim 1 , further ...

Impregnation Section with Upstream Surface for Impregnating Fiber Rovings

An impregnation section of a die and a method for impregnating at least one fiber roving with a polymer resin are disclosed. The impregnation section includes an impregnation zone configured to impregnate the roving with the resin and a gate passage in fluid communication with the impregnation zone for flowing the resin therethrough such that the resin coats the roving. Additionally, the impregnation section includes a surface disposed upstream of the impregnation zone in a run direction of the roving for contacting the roving. The method includes traversing at least one fiber roving over a surface, flowing a polymer resin through a gap, the gap being in the range between approximately 0.1 millimeters and approximately 4 millimeters, coating the roving with the resin, and traversing the coated roving through an impregnation zone to impregnate the roving with the resin.

Impregnation Section And Method For Impregnating Fiber Rovings

An impregnation section of a die and a method for impregnating at least one fiber roving with a polymer resin are disclosed. The impregnation section includes an impregnation zone configured to impregnate the roving with the resin. The impregnation zone includes a plurality of contact surfaces, at least one of the plurality of contact surfaces defining a cut-away portion downstream in a run direction of the roving of a point-of-contact for the at least one of the plurality of contact surfaces. The at least one of the plurality of contact surfaces further includes an edge defined by the cut-away portion. Excess material build up is reduced by the cut-away portion.

Weatherable Fiber-Reinforced Propylene Composition

A fiber-reinforced polymer composition that comprises a polymer matrix that contains a propylene polymer is provided. The polymer matrix constitutes from about 20 wt. % to about 90 wt. % of the composition, and the composition further comprises a plurality of long reinforcing fibers that are distributed within the polymer matrix, wherein the fibers constitute from about 10 wt. % to about 60 wt. % of the composition. Further, the composition also comprises a stabilizer system comprising a sterically hindered phenol antioxidant, phosphite antioxidant, and thioester antioxidant. 1. A fiber-reinforced polymer composition comprising:a polymer matrix that contains a propylene polymer and an antistatic agent, wherein the polymer matrix constitutes from about 20 wt. % to about 90 wt. % of the composition;a plurality of long reinforcing fibers that are distributed within the polymer matrix, wherein the fibers constitute from about 10 wt. % to about 60 wt. % of the composition; anda stabilizer system comprising a sterically hindered phenol antioxidant, phosphite antioxidant, and thioester antioxidant.2. The fiber-reinforced polymer composition of claim 1 , wherein the weight ratio of the phosphite antioxidant to the sterically hindered phenol antioxidant is from about 1:1 to about 5:1.3. The fiber-reinforced polymer composition of claim 1 , wherein the weight ratio of the thioester antioxidant to the sterically hindered phenol antioxidant is from about 2:1 to about 10:1.4. The fiber-reinforced polymer composition of claim 1 , wherein the weight ratio of the thioester antioxidant to the hindered phenol antioxidant is from about 2:1 to about 10:1.5. The fiber-reinforced polymer composition of claim 1 , wherein the sterically hindered phenol antioxidant is present within the composition in an amount of from about 0.01 to about 1 wt. %.7. The fiber-reinforced polymer composition of claim 6 , wherein the sterically hindered phenol antioxidant has the general structure (VI).8. The ...

Thermoplastic Prepreg Containing Continuous and Long Fibers

A prepreg that contains a plurality of unidirectionally aligned continuous fibers embedded within a thermoplastic polymer matrix is provided. In addition to continuous fibers, the prepreg also contains a plurality of long fibers that are combined with the continuous fibers so that they are randomly distributed within the thermoplastic matrix. As a result, at least a portion of the long fibers become oriented at an angle (e.g., perpendicular) relative to the direction of the continuous fibers. Through such orientation, the long fibers can substantially increase the mechanical properties of the prepreg in the transverse direction (e.g., strength) and thus achieve a more isotropic material. Although unique isotropic prepregs are one aspect of the present invention, it should be understood that this is not a requirement. In fact, one notable feature of the present invention is the ability to tailor the mechanical properties of the prepreg for an intended application by selectively controlling certain process parameters, such as the type of long fibers employed, the type of continuous fibers employed, the concentration of the long fibers, the concentration of the continuous fibers, the thermoplastic resin(s) employed, etc. 115-. (canceled)16. A method for forming a thermoplastic prepreg , the method comprising:supplying continuous fibers and long fibers to an extrusion device;supplying a thermoplastic feedstock to the extrusion device, wherein the feedstock comprises at least one thermoplastic polymer; andextruding the continuous fibers, long fibers, and the thermoplastic polymer within an impregnation die to form an extrudate in which the continuous fibers are intermixed with the long fibers and embedded with a matrix of the thermoplastic polymer.17. The method of claim 16 , wherein the feedstock comprises the long fibers.18. The method of claim 16 , further comprising pulling the extrudate through a nip defined between rollers to consolidate the extrudate into the form ...

Impregnation Section of Die and Method for Impregnating Fiber Rovings

An impregnation section and a method for impregnating fiber rovings with a polymer resin are disclosed. The impregnation section includes an impregnation zone and a gate passage. The impregnation zone is configured to impregnate the plurality of rovings with the resin. The gate passage is in fluid communication with the impregnation zone for flowing the resin therethrough such that the resin impinges on a surface of each of the plurality of rovings facing the gate passage and substantially uniformly coats the plurality of rovings. The method includes impinging a polymer resin onto a surface of a plurality of fiber rovings, and substantially uniformly coating the plurality of rovings with the resin. The method further includes traversing the plurality of coated rovings through an impregnation zone. Each of the plurality of rovings is under a tension of from about 5 Newtons to about 300 Newtons within the impregnation zone. 120-. (canceled)21. An impregnation section of a die for impregnating a plurality of fiber rovings with a polymer resin , the impregnation section comprising:an impregnation zone configured to impregnate the plurality of rovings with the resin; anda gate passage in fluid communication with the impregnation zone for flowing the resin therethrough such that the resin impinges on a surface of each of the plurality of rovings facing the gate passage and substantially uniformly coats the plurality of rovings,wherein the impregnation section further comprises a first plate defining a first inner surface and a second plate spaced apart from the first plate and defining a second opposing inner surface, wherein the impregnation zone is defined between the first plate and the second plate, and wherein the impregnation zone comprises a plurality of contact surfaces defined on only one of the first inner surface or the second inner surface.22. The impregnation section of claim 21 , wherein the gate passage extends vertically to the impregnation zone.23. The ...

pipe section and method for forming a pipe section.

Insulated pipe and method for preparing the same

The invention provides an insulated pipe-in-pipe assembly comprising (a) at least one inner pipe, (b) an outer pipe disposed around the at least one inner pipe so as to create an annular space between the outer and inner pipes, (c) porous, resilient, compressible material disposed in the annular space, and (d) a remnant of a container that previously was positioned in the annular space and previously held the compressible material in a volume less than the volume of the compressible material in the annular space. The invention also provides a method for making such an insulated pipe-in-pipe assembly.

Extruder and method for producing high fiber density resin structures

An extruder ( 1 ) and a method for producing high-fiber volume reinforced thermoplastic resin structures ( 50 ), as well as a tape ( 156 ) having opposing resin rich portions ( 302 ) and a fiber rich portion ( 304 ) disposed therebetween and a method for impregnating at least one fiber roving ( 142 ) with a polymer resin to form a tape ( 156. The extruder ( 1 ) includes an impregnation die ( 3 ) having a channel ( 4 ) that applies pressurized molten thermoplastic resin to a plurality of rovings ( 142 ) drawn through the channel ( 4 ), and a die ( 3 ) faceplate ( 5 ) facing the downstream side ( 34 ) of said die ( 3 ). The faceplate ( 5 ) has a plurality of sizing holes ( 42 ) or a slot ( 75 ) arranged along a line that the resin-impregnated rovings ( 142 ) are simultaneously drawn through that remove excess resin and pultrude the resin-impregnated rovings ( 142 ) into rod-shaped or sheet-shaped structures. The faceplate ( 5 ) is spaced apart from the downstream side ( 34 ) of the die ( 4 ) to provide a gap ( 6 ) between the die ( 4 ) and a back side of the faceplate ( 5 ).

Insulated pipe and method for preparing same

The invention provides an insulated pipe-in-pipe assembly comprising (a) at least one inner pipe, (b) an outer pipe disposed around the at least one inner pipe so as to create an annular space between the outer and inner pipes, (c) porous, resilient, compressible material disposed in the annular space, and (d) a remnant of a container that previously was positioned in the annular space and previously held the compressible material in a volume less than the volume of the compressible material in the annular space. The invention also provides a method for making such an insulated pipe-in-pipe assembly.

Insulated pipe and method for preparing same

Pipe section having bonded composite barrier layer

Pipe sections and methods for forming pipe sections are disclosed. A pipe section includes a hollow body formed from a metal material, the hollow body having an inner surface and an outer surface, the inner surface defining an interior. The pipe section further includes a barrier layer surrounding and bonded to the hollow body, the barrier layer having an inner surface and an outer surface. The barrier layer is formed from a continuous fiber reinforced thermoplastic material. Such pipe sections may be lightweight and flexible while exhibiting improved strength characteristics.

Impregnation section with rollers and method for impregnating fiber rovings

An impregnation section of a die (150) and a method for impregnating at least one fiber roving with a polymer resin are disclosed. The impregnation section includes an impregnation zone (250) configured to impregnate the roving with the resin. The impregnation zone (250) includes a plurality of contact surfaces (252). The impregnation section further includes a roller (300) configured to impregnate the roving with the resin. The roller (300) is rotatable about a central axis. The method includes coating a fiber roving with a polymer resin. The method additionally includes traversing the coated roving through a impregnation zone (250) to impregnate the roving with the resin. The impregnation zone (250) includes a plurality of contact surfaces (252). The method further includes traversing the coated roving past a roller (300) to impregnate the roving with the resin.

Thermoplastic prepreg containing continuous and long fibers and method for its manufacture

Die and method for impregnating fiber rovings

A die and method for impregnating at least one fiber roving with a polymer resin are disclosed. In one embodiment, the die includes an impregnation section including an impregnation zone configured to impregnate the roving with the resin, the impregnation zone including a plurality of contact surfaces. The die further includes a perturbation positioned on at least one of the plurality of contact surfaces, the perturbation configured to interact with the roving. In one embodiment, the method includes coating a fiber roving with a polymer resin. The method further includes traversing the coated roving through an impregnation zone to impregnate the roving with the resin. The impregnation zone includes a plurality of contact surfaces. The method further includes interacting the coated roving with a perturbation positioned on at least one of the plurality of contact surfaces.

Insulated pipe and method for preparing same

The invention provides an insulated pipe-in-pipe assembly comprising (a) at least one inner pipe, (b) an outer pipe disposed around the at least one inner pipe so as to create an annular space between the outer and inner pipes, (c) porous, resilient, compressible material disposed in the annular space, and (d) a remnant of a container that previously was positioned in the annular space and previously held the compressible material in a volume less than the volume of the compressible material in the annular space. The invention also provides a method for making such an insulated pipe-in-pipe assembly.

Die and method for impregnating fiber rovings

A die and method for impregnating at least one fiber roving with a polymer resin are disclosed. In one embodiment, the die includes an impregnation section including an impregnation zone configured to impregnate the roving with the resin, the impregnation zone including a plurality of contact surfaces. The die further includes a perturbation positioned on at least one of the plurality of contact surfaces, the perturbation configured to interact with the roving. In one embodiment, the method includes coating a fiber roving with a polymer resin. The method further includes traversing the coated roving through an impregnation zone to impregnate the roving with the resin. The impregnation zone includes a plurality of contact surfaces. The method further includes interacting the coated roving with a perturbation positioned on at least one of the plurality of contact surfaces.

Insulated pipe and method for preparing same.

La invencion proporciona una unidad de conducto dentro de otro conducto aislados que comprende: (a) al menos un conducto interno, (b) un conducto externo colocado alrededor del conducto interno para crear un espacio anular entre los conductos externo e interno, (c) un material comprimible, flexible y poroso, colocado en el espacio anular, y (d) un fragmento de un recipiente que se coloco anteriormente en el espacio anular y sujeto anteriormente el material comprimible en un volumen menor al volumen del material comprimible en el espacio anular. La invencion tambien proporciona un metodo para elaborar esta unidad de conducto dentro de otro conducto aislados.

Rod assembly and method for forming rod assembly

Methods for forming fiber reinforced polymer rod assemblies and fiber reinforced polymer rod assemblies are disclosed. In one embodiment, the method includes heating a portion of a first fiber reinforced polymer rod and heating a portion of a second fiber reinforced polymer rod. The method further includes intertwining the portions of the first fiber reinforced polymer rod and the second fiber reinforced polymer rod to form a rod connecting section. The method further includes aligning the first fiber reinforced polymer rod and the second fiber reinforced polymer rod along a linear axis. The method further includes cooling the portions of the first fiber reinforced polymer rod and the second fiber reinforced polymer rod.

Pultrusion with abrasion resistant finish

A lineal product includes a substrate having an outer surface, a thermoplastic base layer applied to the outer surface, and a second thermoplastic layer applied over at least a portion of the base layer, the second layer having a hardness of at least 1H pencil hardness.

Phosphorescent pultrusion

A plastic component includes a fiber-reinforced pultruded profile having an outer surface and a phosphorescent coating located on at least a portion of the surface.

Method and apparatus for application of a finish to a lineal product

A method includes forming a lineal substrate in a production line, die-applying a thermoset finish to a surface of the lineal substrate inline, and curing the thermoset finish inline so as to bond the thermoset finish to the surface of the lineal substrate.

Insulated pipe and method for preparing the same

The invention provides an insulated pipe-in-pipe assembly comprising (a) at least one inner pipe, (b) an outer pipe disposed around the at least one inner pipe so as to create an annular space between the outer and inner pipes, (c) porous, resilient, compressible material disposed in the annular space, and (d) a remnant of a container that previously was positioned in the annular space and previously held the compressible material in a volume less than the volume of the compressible material in the annular space. The invention also provides a method for making such an insulated pipe-in-pipe assembly.

Subsea pipe section with reinforcement layer

Subsea pipe sections and methods for forming subsea pipe sections are disclosed. A subsea pipe section includes a hollow body formed from a polymer material, the hollow body having an inner surface and an outer surface, the inner surface defining an interior. The subsea pipe section further includes a reinforcement layer surrounding and bonded to the hollow body, the reinforcement layer having an inner surface and an outer surface. The reinforcement layer is formed from a fiber reinforced thermoplastic material and has a resin rich portion and a fiber rich portion. The resin rich portion includes the inner surface of the reinforcement layer and is in contact with the hollow body. The fiber rich portion is spaced from the inner surface of the reinforcement layer.

Phosphorescent pultrusion

A plastic component includes a fiber-reinforced pultruded profile having an outer surface and a phosphorescent coating located on at least a portion of the surface.

Insulated pipe and method for preparing same

Weatherable fiber-reinforced propylene composition

A fiber-reinforced polymer composition that comprises a polymer matrix that contains a propylene polymer is provided. The polymer matrix constitutes from about 20 wt. % to about 90 wt. % of the composition, and the composition further comprises a plurality of long reinforcing fibers that are distributed within the polymer matrix, wherein the fibers constitute from about 10 wt. % to about 60 wt. % of the composition. Further, the composition also comprises a stabilizer system comprising a sterically hindered phenol antioxidant, phosphite antioxidant, and thioester antioxidant.

Uv stable fiber-reinforced polymer composition

A fiber-reinforced polymer composition that contains a polymer matrix, stabilizer system, and a plurality of long reinforcing fibers that are distributed within the polymer matrix is provided. The stabilizer system comprises an antioxidant, an ultraviolet light stabilizer, and a carbon material that includes carbon particles. The polymer composition defines a surface that exhibits a ΔE value of from about 0.6 to about 3 after being exposed to UV light at a total exposure level of 2,500 kJ/m² according to SAE J2527_2017092.

Fiber reinforced thermoplastic polymer composition with flame retardant properties

A long fiber-reinforced polymer composition is disclosed having excellent flame retardant properties, optionally in combination with long-term heat stability. The flame retardant composition can include a flame retardant system comprised of only two flame retardant components. The composition can display excellent flame resistant properties at extremely small thicknesses. The composition can also contain a stabilizer package that dramatically improves heat aging properties.

Antenna module for a 5g system

An antenna module that comprises a housing that receives at least one antenna element configured to transmit and receive 5G radio frequency signals is disclosed. The housing contains a fiber-reinforced polymer composition comprising a polymer matrix that contains a thermoplastic polymer and a plurality of long reinforcing fibers that are distributed within the polymer matrix. The polymer composition exhibits a dielectric constant of about 3.5 or less and dissipation factor of about 0.009 or less at a frequency of 2 GHz.

Fiber-reinforced propylene polymer composition

A fiber-reinforced polymer composition comprising from about 60 wt.% to about 90 wt.% of a polymer matrix that contains a propylene polymer and from about 10 wt.% to about 40 wt.% of a plurality of long reinforcing fibers that are distributed within the polymer matrix, is provided. The polymer composition exhibits a dielectric constant of about 4 or less and dissipation factor of about 0.01 or less at a frequency of 2 GHz. Further, the polymer composition exhibits a Charpy unnotched impact strength of about 20 kJ/m 2 or more as determined in accordance with ISO Test No. 179-1:2010 at a temperature of about 23°C, and a Limiting Oxygen Index of about 25 or more as determined in accordance with ISO 4589:2017.

Fiber Reinforced Thermoplastic Polymer Composition With Flame Retardant Properties

A long fiber-reinforced polymer composition is disclosed having excellent flame retardant properties, optionally in combination with long-term heat stability. The flame retardant composition can include a flame retardant system comprised of only two flame retardant components. The composition can display excellent flame resistant properties at extremely small thicknesses. The composition can also contain a stabilizer package that dramatically improves heat aging properties.

Pultrusion with abrasion resistant finish

A lineal product includes a composite pultruded substrate having a solid outer surface, and a multi-layer coating extruded directly onto the outer surface. The coating comprises a solid extruded base layer comprising a first thermoplastic material extruded onto the outer surface, the base layer having a base-layer inner surface in intimate contact with the outer surface and a base-layer outer interface. The coating further comprises a solid extruded outer layer comprising a second thermoplastic material comprising polymethyl methacrylate extruded onto the first thermoplastic material, the solid extruded outer layer having an outer-layer interface in intimate contact with the base-layer outer interface and an outer-layer outer surface, wherein the intimate contact between the base-layer outer interface and the outer-layer interface forms a solid interface between the base layer and the outer layer. The solid extruded outer layer has a hardness of at least 1H pencil hardness.

Weatherable fiber-reinforced propylene composition

A fiber-reinforced polymer composition that comprises a polymer matrix that contains a propylene polymer is provided. The polymer matrix constitutes from about 20 wt.% to about 90 wt.% of the composition, and the composition further comprises a plurality of long reinforcing fibers that are distributed within the polymer matrix, wherein the fibers constitute from about 10 wt.% to about 60 wt.% of the composition. Further, the composition also comprises a stabilizer system comprising a sterically hindered phenol antioxidant, phosphite antioxidant, and thioester antioxidant.

Plow-colter.

耐候性繊維強化プロピレン組成物

【課題】高温及び／又は紫外光に曝露された後に、安定した状態をより良好に維持することができるという点で耐候性であるポリマー組成物を提供する。【解決手段】ポリマーマトリクスは組成物の約２０重量％～約９０重量％を構成し、組成物はポリマーマトリクス内に分配されている複数の長い強化繊維を更に含み、繊維は組成物の約１０重量％～約６０重量％を構成する。更に、組成物はまた、立体障害フェノール酸化防止剤、ホスファイト酸化防止剤、及びチオエステル酸化防止剤を含む安定剤系も含む。【選択図】図１

Fiber Reinforced Thermoplastic Polymer Composition Containing Flame Retardant Package

A long fiber-reinforced polymer composition is disclosed having excellent flame retardant properties. The flame retardant composition can include a flame retardant system comprised of a metal phosphinate in combination with elevated levels of a synergist, such as a polyphosphate. The composition can display excellent flame resistant properties at extremely small thicknesses.

Electronic module

An electronic module that comprises a housing that receives at least one electronic component is disclosed. The housing contains a fiber-reinforced polymer composition comprising a polymer matrix that contains a thermoplastic polymer and a plurality of long reinforcing fibers that are distributed within the polymer matrix. The polymer composition exhibits a dielectric constant of about 4 or less and dissipation factor of about 0.01 or less at a frequency of 2 GHz. Further, the polymer composition exhibits a Charpy unnotched impact strength of about 20 kJ/m2 or more as determined in accordance with ISO Test No. 179-1:2010 at a temperature of about 23°C.

Fiber reinforced thermoplastic polymer composition containing flame retardant package

A long fiber-reinforced polymer composition is disclosed having excellent flame retardant properties. The flame retardant composition can include a flame retardant system comprised of a metal phosphinate in combination with elevated levels of a synergist, such as a polyphosphate. The composition can display excellent flame resistant properties at extremely small thicknesses.

Weatherable fiber-reinforced propylene composition

A fiber-reinforced polymer composition that comprises a polymer matrix that contains a propylene polymer is provided. The polymer matrix constitutes from about 20 wt.% to about 90 wt.% of the composition, and the composition further comprises a plurality of long reinforcing fibers that are distributed within the polymer matrix, wherein the fibers constitute from about 10 wt.% to about 60 wt.% of the composition. Further, the composition also comprises a stabilizer system comprising a sterically hindered phenol antioxidant, phosphite antioxidant, and thioester antioxidant.

Impregnation section with upstream surface and method for impregnating fiber rovings

Impregnation section with upstream surface and method for impregnation fiber rovings

Fiber-reinforced propylene polymer composition

A fiber-reinforced polymer composition comprising from about 60 wt. % to about 90 wt. % of a polymer matrix that contains a propylene polymer and from about 10 wt. % to about 40 wt. % of a plurality of long reinforcing fibers that are distributed within the polymer matrix, is provided. The polymer composition exhibits a dielectric constant of about 4 or less and dissipation factor of about 0.01 or less at a frequency of 2 GHz. Further, the polymer composition exhibits a Charpy unnotched impact strength of about 20 kJ/m2 or more as determined in accordance with ISO Test No. 179-1:2010 at a temperature of about 23° C., and a Limiting Oxygen Index of about 25 or more as determined in accordance with ISO 4589:2017.