Abstract: Undesirable materials that are frequently discarded from recycling desirable polymer-containing materials may be processed and used in the production of soft surfaces to produce soft surfaces with improved properties.

Abstract: The present invention relates to a method for producing nylon, said method comprising the steps of providing a nylon base material being sulfonated in the polymer backbone and/or on polymer amine-end groups, said nylon base material comprising a sulfur content of at least 200 ppm; mixing the nylon base material with an additive, said additive comprising an amine-end group terminating agent and/or a sulfonating agent, and optionally at least one further additive; thereby obtaining a nylon polymer mixture and reacting the nylon polymer mixture thereby obtaining a nylon polymer, said nylon polymer being characterized by a lower amine-end group content than the content of amine-end group of the nylon base material. The present invention further relates to a method for producing nylon base material. In another aspect, the present invention relates to a nylon base material. In another aspect, the present invention relates to a nylon polymer.

Abstract: A method of guiding an angiographic wire while delivering fluid solvent to the wire. The method incorporates a guide device comprising a housing that is mated to a base in a manner that defines an aperture for slidably receiving the angiographic wire. A plunger is disposed within the housing in a adjustable manner via slots disposed on a flexible plunger arm and mating tabs disposed inside the housing. The plunger has an open position, a closed position, and one or more intermediate positions relative to the housing. The angiographic wire seats in the aperture, and the housing is mated to the base such that the wire is slidably retained in the aperture. The plunger is depressed such that a compression pad on the plunger is placed in contact with the wire, the wire being slidably retained between the compression pad and a base pad attached to the base.

Abstract: Various implementations include a melt-spun filament (or fiber), a spinneret plate for producing the melt-spun filaments, and methods of making the melt-spun filaments. The melt-spun filaments have a similar soft hand feel as natural cotton fibers and are more resilient, less absorbent, and easier to clean, according to some implementations. In addition, according to some implementations, the melt-spun filaments produce a softer and bulkier yarn than traditional trilobal shaped filaments having the same denier per filament.

Abstract: The production of bicomponent polymer fibers may be enhanced to provide greater bulk in bulk continuous filaments by creating differential stresses in the extruded combined melt and using those differential stresses to increase crimps, twists, and rotations thereby providing greater bulk. In one of many possible embodiments, these differential stresses may be formed by combining polymer compositions having different properties, or during the extrusion of the combined polymer melt from the spinneret, or by environmentally treating the melt spun bicomponent filament. The inventions disclosed and taught herein may be applied to the production of all types of bicomponent polymer fibers including, and without limitation, side-by-side and core and sheath extrusions.

Abstract: Various implementations of yarns and multi-component filaments having a plurality of solid particles dispersed throughout a portion of the filaments are described herein. Inclusion of solid particles through a portion of the filaments allows for differing certain properties in products formed from the filaments while maintaining desirable physical properties such as strength or abrasion resistance. For example, including translucent or transparent particles, such as glass flakes or mica, may differ the visual properties, such as providing an increased luster. And, in other implementations, opaque solid particles may be included through a portion of the filaments to create a different property for a product formed with the filament.

Abstract: The present disclosure is directed to methods for at least partially removing a dye from a dyed fiber comprising one or more polyamide or polyester polymers, and products formed thereof.

Abstract: A method of guiding an angiographic wire while delivering fluid solvent to the wire. The method incorporates a guide device comprising a housing that is mated to a base in a manner that defines an aperture for slidably receiving the angiographic wire. A plunger is disposed within the housing in a vertically adjustable manner such that the plunger has an open position, a closed position, and one or more intermediate positions relative to the housing. The angiographic wire is placed in the aperture, and the housing is mated to the base such that the wire is slidably retained in the aperture. The plunger is depressed such that a compression pad on the plunger is placed in contact with the wire, the wire being slidably retained between the compression pad and a base pad attached to the base.

Abstract: Various implementations include a method of forming a bulked continuous filament (BCF) yarn. The method includes providing N molten streams of polymer, providing M spinnerets, and spinning the N molten streams of polymer through the M spinnerets. At least a first group of filaments and a second group of filaments are spun through the M spinnerets. The first group of filaments each have a first average denier per filament along a length of the filaments and the second group of filaments each having a second average denier per filament along a length of the filaments, the first and second average denier per filament being different. The method further includes combining the filaments from the M spinnerets together and texturizing the spun filaments.

Abstract: Various implementations include a melt-spun filament that has a radial cross section that has two substantially parallel linear perimetrical sections and first and second curved perimetrical sections. The first curved perimetrical section extends between first ends of the linear perimetrical sections, and the second curved perimetrical section extends between second ends of the linear perimetrical sections. The curved perimetrical sections are convex. According to some embodiments, the curved perimetrical sections are semi-circular or semi-elliptical. A plurality of melt-spun filaments may be included in a bundle of filaments and/or a yarn made with the melt-spun filaments. In addition, a spinneret plate for spinning the melt-spun filaments and a method of making the melt-spun filaments is also provided.

Abstract: The present disclosure provides combination yarns and carpets formed therefrom, in particular combination yarns comprising a first single primarily PET yarn and a second single primarily PTT yarn, wherein at least one of the first single yarn or the second single yarn includes one or more additives which increases dye uptake.

Abstract: The present disclosure provides polyester filaments with improved dyeability and their use in fiber for various applications, in particular polyethylene terephthalate or polytrimethylene terephthalate filaments that can be used in carpets.

Abstract: A method for providing a multifilament bundle of melt spun polymer filaments, the that includes providing a spinning device including at least M extruders for melting M polymers, M groups of spinning stations, each group comprising N spinning stations, each spinning station comprising and a spin pack coupled to a spin pump which receives molten polymer from one of the M extruders and spins a strand of filaments by pushing said polymer through the coupled spin pack, and N transformation stations for bundling M strands of filaments. The method further includes spinning N*M strands of filaments from the spinning stations at a given spin pump output and bundling the strands into N multifilament bundles via the N transformation stations whereby the spin pump outputs are varied over time.

Abstract: Systems and methods for producing BCF yarns include providing at least one color enhancement method for enhancing the color and/or hue of at least one of the N bundles of filaments. The color enhancement methods include tacking one or more of the bundles of spun filaments prior to and/or during drawing, texturizing one or more bundles of spun filaments individually from the other bundles of spun filaments, providing intermediate tacking of at least one bundle of texturized filaments and feeding the tacked and texturized filaments to a mixing cam for positioning tacked and texturized bundles relative one to the other before reaching the final tacking device, or combinations thereof.

Abstract: Systems for producing M yarns, wherein M?1, include N extruders, M spin stations, and a processor, wherein N>1. Each extruder includes a thermoplastic polymer having a color, hue, and/or dyability characteristic, which are different from each other. Each spin station produces one yarn comprising at least one bundle of filaments. Each spin station comprises at least one spinneret through which filaments are spun from at least two molten thermoplastic polymer streams received by the respective spin station and N spin pumps upstream of the spinneret for the respective spin station. Each spin pump is paired with one of the N extruders. The processor is in electrical communication with the N*M spin pumps and is configured to adjust the volumetric flow rate of the polymers pumped from each spin pump to achieve a ratio of the polymers to be included in each M yarn.

Abstract: Systems for producing M bundles of filaments, wherein M?1, include N extruders, M spin stations, and a processor, wherein N>1. Each extruder includes a thermoplastic polymer having a color, hue, and/or dyability characteristic, which are different from each other. Each spin station produces N bundles of filaments that form a yarn. Each spin station comprises N spinnerets through which filaments are spun from molten polymers streams received by the respective spin station and N spin pumps upstream of the N spinnerets for the respective spin station. Each spin pump is paired with one of the N extruders. The processor is in electrical communication with the N*M spin pumps and is configured to adjust the volumetric flow rate of the polymers pumped from each spin pump to achieve a ratio of the polymers to be included in the yarn from each spin station.

Abstract: A method of guiding an angiographic wire while delivering fluid solvent to the wire. The method incorporates a guide device comprising a housing that is mated to a base in a manner that defines an aperture for slidably receiving the angiographic wire. A plunger is disposed within the housing in a vertically adjustable manner such that the plunger has an open position, a closed position, and one or more intermediate positions relative to the housing. The angiographic wire is placed in the aperture, and the housing is mated to the base such that the wire is slidably retained in the aperture. The plunger is depressed such that a compression pad on the plunger is placed in contact with the wire, the wire being slidably retained between the compression pad and a base pad attached to the base.

Abstract: A guide device capable of guiding an angiographic wire while delivering fluid solvent to the wire. The guide device comprises a housing mated to a base in a manner that defines an aperture for slidably receiving the angiographic wire. The housing comprises a plunger configured for placement in an open position, a closed position, and one or more intermediate positions. The guide device comprises a port placed in fluid communication with an absorbent base pad capable of being impregnated with fluid solvent, and delivering the solvent to the surface of the angiographic wire.

Abstract: A guide device capable of guiding an angiographic wire while delivering fluid solvent to the wire. The guide device comprises a housing mated to a base in a manner that defines an aperture for slidably receiving the angiographic wire. The housing comprises a plunger configured for placement in an open position, a closed position, and one or more intermediate positions. The guide device comprises a port placed in fluid communication with an absorbent base pad capable of being impregnated with fluid solvent, and delivering the solvent to the surface of the angiographic wire.