Patent application number | Description | Published |
20080242171 | Production of nanofibers by melt spinning - A process and apparatus for forming nanofibers from a spinning melt utilizing a high speed rotating distribution disc. The fibers can be collected into a uniform web for selective barrier end uses. Fibers with an average fiber diameter of less that 1,000 nm can be produced. | 10-02-2008 |
20090160099 | CENTRIFUGAL SOLUTION SPUN NANOFIBER PROCESS - The invention relates to a process for forming nanofibers from a spinning solution utilizing a high speed rotating spin disk having a flat surface. The nanofibers can be collected into a uniform web for selective barrier end uses. | 06-25-2009 |
20100032872 | SOLUTION SPUN FIBER PROCESS - The invention relates to a process for forming fibers from a spinning solution utilizing a high speed rotary sprayer. The fibers can be collected into a uniform web for selective barrier end uses. Fibers with an average fiber diameter of less that 1,000 nm can be produced. | 02-11-2010 |
20110250257 | FIBROUS TISSUE SEALANT AND METHOD OF USING SAME - Disclosed herein is a fibrous tissue sealant in the form of an anhydrous fibrous sheet comprising a first component which is a fibrous polymer containing electrophilic or nucleophilic groups and a second component capable of crosslinking the first component when the sheet is exposed to an aqueous medium, thereby forming a crosslinked hydrogel that is adhesive to biological tissue. The fibrous tissue sealant may be useful as a general tissue adhesive for medical and veterinary applications such as wound closure, supplementing or replacing sutures or staples in internal surgical procedures, tissue repair, and to prevent post-surgical adhesions. The fibrous tissue sealant may be particularly suitable for use as a hemostatic sealant to stanch bleeding from surgical or traumatic wounds. | 10-13-2011 |
20130337036 | METHOD OF USING FIBROUS TISSUE SEALANT - Disclosed herein is a fibrous tissue sealant in the form of an anhydrous fibrous sheet comprising a first component which is a fibrous polymer containing electrophilic or nucleophilic groups and a second component capable of crosslinking the first component when the sheet is exposed to an aqueous medium, thereby forming a crosslinked hydrogel that is adhesive to biological tissue. The fibrous tissue sealant may be useful as a general tissue adhesive for medical and veterinary applications such as wound closure, supplementing or replacing sutures or staples in internal surgical procedures, tissue repair, and to prevent post-surgical adhesions. The fibrous tissue sealant may be particularly suitable for use as a hemostatic sealant to stanch bleeding from surgical or traumatic wounds. | 12-19-2013 |
20140235129 | NANOWEB STRUCTURE - A nanoweb of polymeric nanofibers in which all of the polymeric fibers have a mean curl index when measured over any 100 micron long segment of less than 0.10 and the nanoweb has a uniformity index of less than 5.0. The nanoweb may have a fiber orientation index of between 0.8 and 1.2 or a mean flow pore size minus the mode of the pore size is less than 1.0 and simultaneously the ratio of the 99% width of the pore size distribution (W) to the width at half height of the pore size distribution (H | 08-21-2014 |
20150107457 | ELECTRET NANOFIBROUS WEB AS AIR FILTRATION MEDIA - The present invention is directed toward an improved air filtration medium comprising a single layer polymeric nanofibrous web comprising a single source randomly intermingled fiber network with electrostatic charge up to −20 kV, a filtration efficiency range from about 70% to about 99.99%, and an air resistance less than about 2.5 mm wg for 0.3 diameter micron particles. The air filtration medium is made from a centrifugal melt spinning process. | 04-23-2015 |
20150111019 | ELECTRET NANOFIBROUS WEB - The present invention is directed toward an electret nanofibrous web comprising a single source randomly intermingled fiber network with a range of fiber diameters that yields improved mechanical strength. | 04-23-2015 |
20150111455 | APPARATUS FOR PRODUCTION OF POLYMERIC NANOFIBERS - The present invention is directed toward an apparatus comprising a high speed rotating disk or bowl for nanofiber spinning from the rotational sheared thin film fibrillation at the enclosed serrations with the optimized stretching zone to produce the defects-free nanofibrous web and nanofibrous membrane comprising a nanofiber network with a number average nanofiber diameter less than 500 nm that yield the crystallinity higher than the polymer resin used in making the web. | 04-23-2015 |
20150111456 | MELT-SPUN POLYPROPYLENE FINE-GRADE NANOFIBROUS WEB - The present invention is directed toward a to fine-grade stand-alone nanoweb and nanofibrous membrane comprising a nanofiber network with a number average nanofiber diameter less than 200 nm and the mean flow pore size less than 1000 nm that yield the selective barrier medium with a superior balance of flow versus barrier properties. | 04-23-2015 |