Patent application number | Description | Published |
20120273988 | 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. | 11-01-2012 |
20120321804 | 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. | 12-20-2012 |
20130136890 | 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. | 05-30-2013 |
20130147082 | 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. | 06-13-2013 |
20130147083 | 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. | 06-13-2013 |
20130147084 | 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. | 06-13-2013 |
20130269819 | 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. | 10-17-2013 |
20130291993 | 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. | 11-07-2013 |
20140005331 | Asymmetric Fiber Reinforced Polymer Tape | 01-02-2014 |
20140027944 | Die and Method for Impregnating Fiber Rovings - A die and a method for impregnating fiber rovings ( | 01-30-2014 |
20140037842 | Impregnation Section of Die and Method for Impregnating Fiber Rovings - An impregnation section ( | 02-06-2014 |
20140093649 | Impregnation Section with Rollers and Method for Impregnating Fiber Rovings - An impregnation section of a die ( | 04-03-2014 |
20140191437 | Impregnation Section with Tension Adjustment Device and Method for Impregnating Fiber Rovings - An impregnation section of a die ( | 07-10-2014 |
20140212650 | IMPREGNATION SECTION WITH TENSION ADJUSTMENT DEVICE AND METHOD FOR IMPREGNATING FIBER ROVINGS - An extruder ( | 07-31-2014 |
20150044377 | 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 ( | 02-12-2015 |