| Patent application number | Description | Published |
|---|
| 20080203610 | Hot Surface Hydrolysis of Polyphosphoric Acid in Spun Yarns - The present invention relates to processes for hydrolyzing polyphosphoric acid in spun multifilament yarns. | 08-28-2008 |
| 20080223626 | System For Accurately Weighing Solids and Control Mechanism For Same - A system for accurately weighing a mass of material, including a closed chamber ( | 09-18-2008 |
| 20100007063 | Infrared solvent stripping process - A process for stripping chemically bonded spinning solvent from a solution-spun nonwoven web comprising the steps of providing a nonwoven web comprising solvent-laden polymeric fibers having average fiber diameters of less than about 1 micrometer, and transporting the nonwoven web through at least one infrared solvent stripping station wherein infrared radiation irradiates the nonwoven web in the absence of a solvent stripping fluid impinging on the nonwoven web in order to reduce the solvent concentration of the fibers to less than about 10,000 ppmw. | 01-14-2010 |
| 20100072658 | PROCESS AND APPARATUS FOR THE PRODUCTION OF YARN - The present invention concerns a process and apparatus for spinning polymer filaments comprising extruding a polymer solution to form one or more filaments into an air gap above a coagulation liquid, where the filaments are subject to strain; forming a downward stream of liquid and filaments by contacting the polymer solution with a coagulation liquid; passing the filaments and liquid through a quench tube; contacting the liquid with a surface such that the downward force of gravity on the liquid does not increase the strain of the filaments in the air gap; and separating the liquid from the filaments. | 03-25-2010 |
| 20100210814 | FUSION-FREE HYDROLYSIS OF POLYPHOSPHORIC ACID IN SPUN MULTIFILAMENT YARNS - The present invention relates to processes for hydrolyzing polyphosphoric acid in spun multifilament yarns. | 08-19-2010 |
