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US 2019/0232579 A1Published application
Composite Fibers and Method of Producing Fibers
OwnerOleksandr Biland, Robert Bruce Fergusoninventors
Life of this patent
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Abstract
Composite fibers created by a process including vertically texturizing and impregnating resin into the fibers at controlled viscosity results in stronger fibers in which virtually no microbubbles are trapped resulting in improved tensile strength for use in reinforcing concrete and other materials.
Claims17
Composite fibers made by a method of producing composite fibers, said method comprising:
- feeding a plurality of fiber strands vertically down through a texturizer to obtain texturized fibers, wherein the texturized fibers are unstrained;
- vertically feeding the texturized fibers down through an injection device;
- injecting resin into the injection device at a viscosity of 5 mPa*S or less;
- rotating the plurality of fibers in the injection device, effective to twist the fibers into a bundle, wherein the twisting point is below the level of resin in the injection device, and wherein at least a portion of trapped gases rise to the surface of the resin;
- squeezing the bundle with squeezing rollers inside the injection device, wherein the trapped gases to rise to the surface of the resin;
- removing the bundle from the bottom of the device by pulling the bundle;
- pulling the bundle into a first curing station;
- pulling the bundle through shaping grips in which the shaping grips are adapted to:
- (i) pull the bundle from the first curing station,
- (ii) impart a shape to the bundle and
- (iii) push the bundle without tension out of the shaping grips;
- and
- pushing the bundle from the shaping grips through a second curing station without tensioning the bundle.
10 more elements
Fibers produced by a method comprising:
- vertically feeding a plurality of unstrained texturized fibers down through a device;
- injecting resin into the device at a viscosity of from 1 to 5 mPa*S;
- rotating the plurality of fibers effective to twist all the fibers into a bundle, wherein the twisting point is below the level of resin in the device, and wherein at least a portion of trapped gases rise to the surface of the resin;
- squeezing the bundle with squeezing rollers inside the device, wherein trapped gases rise to the surface of the resin;
- removing the bundle from the bottom of the device by pulling the bundle through tension rollers;
- pulling the bundle into a first curing station;
- pulling the bundle through shaping grips that pull the bundle from the first curing station, impart a shape to the bundle and push the bundle without tension out of the shaping grips;
- and
- pushing the bundle from the shaping grips through a second curing station without tensioning the bundle.
6 more elements
An apparatus for processing fibers in a continuous process, said apparatus comprising:
- one or more devices for holding a basalt fiber roving spool;
- a rotating table disposed below the one or more devices for holding a basalt roving spool;
- one or more air flow texturizers disposed below the rotating table;
- a resin injection device disposed below said texturizers;
- a resin stabilizer in fluid connection with said resin injection device;
- a resin mixing and metering device in fluid communication with said resin stabilizer;
- a tensioning roller disposed below the resin injection device;
- a first curing tunnel downstream of the tensioning roller;
- a second curing tunnel downstream of the first curing tunnel;
- shaping grips disposed between said first curing tunnel and said second curing tunnel, adapted to pull a bundle of fibers from the first curing station, impart a shape to the bundle and push the bundle into said second curing station without tensioning the bundle;
- and
- a cutting station downstream of said second curing tunnel.
9 more elements
Dependencies are inferred from the claim text.