Patents by Inventor David Dudley Newkirk
David Dudley Newkirk has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 11920268Abstract: A system for preparing a polylactic acid (PLA) spunbond nonwoven fabric is provided. In particular, the system includes a first PLA source configured to provide a stream of molten or semi-molten PLA resin; a spin beam in fluid communication with the first PLA source, the spin beam configured to extrude and draw a plurality of PLA continuous filaments; a collection surface disposed below an outlet of the spin beam onto which the PLA continuous filaments are deposited to form the PLA spunbond nonwoven fabric; a first ionization source positioned and arranged to expose the PLA continuous filaments to ions; and a calender positioned downstream of the first ionization source.Type: GrantFiled: May 18, 2022Date of Patent: March 5, 2024Assignees: Fitesa Simpsonville, Inc., Fitesa Germany GMBHInventors: Gary Drews, Elena Novarino, Jason Hamilton, Alfredo Izzo, David Dudley Newkirk
-
Publication number: 20220275549Abstract: A system for preparing a polylactic acid (PLA) spunbond nonwoven fabric is provided. In particular, the system includes a first PLA source configured to provide a stream of molten or semi-molten PLA resin; a spin beam in fluid communication with the first PLA source, the spin beam configured to extrude and draw a plurality of PLA continuous filaments; a collection surface disposed below an outlet of the spin beam onto which the PLA continuous filaments are deposited to form the PLA spunbond nonwoven fabric; a first ionization source positioned and arranged to expose the PLA continuous filaments to ions; and a calender positioned downstream of the first ionization source.Type: ApplicationFiled: May 18, 2022Publication date: September 1, 2022Applicants: Fitesa Germany GmbH, Fitesa Simpsonville, Inc.Inventors: Gary Drews, Elena Novarino, Jason Hamilton, Alfredo Izzo, David Dudley Newkirk
-
Patent number: 11365497Abstract: A system for preparing a polylactic acid (PLA) spunbond nonwoven fabric is provided. In particular, the system includes a first PLA source configured to provide a stream of molten or semi-molten PLA resin; a spin beam in fluid communication with the first PLA source, the spin beam configured to extrude and draw a plurality of PLA continuous filaments; a collection surface disposed below an outlet of the spin beam onto which the PLA continuous filaments are deposited to form the PLA spunbond nonwoven fabric; a first ionization source positioned and arranged to expose the PLA continuous filaments to ions; and a calender positioned downstream of the first ionization source.Type: GrantFiled: January 31, 2020Date of Patent: June 21, 2022Assignees: Fitesa Germany GmbH, Fitesa Simpsonville, Inc.Inventors: Gary Drews, Elena Novarino, Jason Hamilton, Alfredo Izzo, David Dudley Newkirk
-
Publication number: 20200165761Abstract: A system for preparing a polylactic acid (PLA) spunbond nonwoven fabric is provided. In particular, the system includes a first PLA source configured to provide a stream of molten or semi-molten PLA resin; a spin beam in fluid communication with the first PLA source, the spin beam configured to extrude and draw a plurality of PLA continuous filaments; a collection surface disposed below an outlet of the spin beam onto which the PLA continuous filaments are deposited to form the PLA spunbond nonwoven fabric; a first ionization source positioned and arranged to expose the PLA continuous filaments to ions; and a calender positioned downstream of the first ionization source.Type: ApplicationFiled: January 31, 2020Publication date: May 28, 2020Applicants: Fitesa Germany GmbH, Fitesa Simpsonville, Inc.Inventors: Gary Drews, Elena Novarino, Jason Hamilton, Alfredo Izzo, David Dudley Newkirk
-
Patent number: 10590577Abstract: A system for preparing a polylactic acid (PLA) spunbond nonwoven fabric is provided. In particular, the system includes a first PLA source configured to provide a stream of molten or semi-molten PLA resin; a spin beam in fluid communication with the first PLA source, the spin beam configured to extrude and draw a plurality of PLA continuous filaments; a collection surface disposed below an outlet of the spin beam onto which the PLA continuous filaments are deposited to form the PLA spunbond nonwoven fabric; a first ionization source positioned and arranged to expose the PLA continuous filaments to ions; and a calender positioned downstream of the first ionization source.Type: GrantFiled: August 2, 2017Date of Patent: March 17, 2020Assignees: FITESA GERMANY GMBH, FITESA SIMPSONVILLE, INC.Inventors: Gary Drews, Elena Novarino, Jason Hamilton, Alfredo Izzo, David Dudley Newkirk
-
Publication number: 20180038026Abstract: A system for preparing a polylactic acid (PLA) spunbond nonwoven fabric is provided. In particular, the system includes a first PLA source configured to provide a stream of molten or semi-molten PLA resin; a spin beam in fluid communication with the first PLA source, the spin beam configured to extrude and draw a plurality of PLA continuous filaments; a collection surface disposed below an outlet of the spin beam onto which the PLA continuous filaments are deposited to form the PLA spunbond nonwoven fabric; a first ionization source positioned and arranged to expose the PLA continuous filaments to ions; and a calender positioned downstream of the first ionization source.Type: ApplicationFiled: August 2, 2017Publication date: February 8, 2018Inventors: Gary Drews, Elena Novarino, Jason Hamilton, Alfredo Izzo, David Dudley Newkirk
-
Patent number: 9850603Abstract: A nonwoven fabric comprising a meltspun fiber of a lignin compound. Also claimed a laminated fabric comprising the nonwoven fabric, a nonwoven fabric product comprising the nonwoven fabric, a structured multicomponent fiber comprising a lignin compound, a web comprising a meltspun fiber of a lignin compound and a method of producing a nonwoven fabric by forming a web of meltspun fiber comprising a lignin compound and bonding at least a portion of the fiber in the web to form the nonwoven fabric.Type: GrantFiled: October 19, 2011Date of Patent: December 26, 2017Assignees: Fitesa Simpsonville, Inc., Fitesa Germany GmbHInventors: David Dudley Newkirk, Juergen Friedrich Rudolph, Helmut Hartl
-
Publication number: 20170056253Abstract: Bio-based absorbent articles are provided. Bio-based absorbent articles include a topsheet, a backsheet, and an absorbent core sandwiched there between. The topsheet and backsheet are attached to each other along opposing surfaces to define a cavity in which the absorbent core is enclosed. The components of absorbent article are selected so that at least 75% of the material comprising the absorbent article comprises a bio-based material, and preferably at least 80%, 85%, 90%, and 95% of the material comprising the absorbent article comprises a bio-based material.Type: ApplicationFiled: August 28, 2015Publication date: March 2, 2017Inventors: Stephen O. Chester, Gary Drews, Daniel Kong, David Dudley Newkirk
-
Publication number: 20140087618Abstract: A nonwoven fabric comprising a meltspun fibre of a lignin compound. Also claimed a laminated fabric comprising the nonwoven fabric, a nonwoven fabric product comprising the nonwoven fabric, a structured multicomponent fibre comprising a lignin compound, a web comprising a meltspun fibre of a lignin compound and a method of producing a nonwoven fabric by forming a web of meltspun fibre comprising a lignin compound and bonding at least a portion of the fibre in the web to form the nonwoven fabric.Type: ApplicationFiled: October 19, 2011Publication date: March 27, 2014Applicant: FITESA NONWOVEN, INC.Inventors: David Dudley Newkirk, Juergen Friedrich Rudolph, Helmut Hartl
-
Publication number: 20140072788Abstract: Disclosed are highly extensible bonded webs or multilayered sheets containing these. These products can be processed in a ring-roll process without damage. The bonded webs or multilayered sheets can be used, for example in the manufacture of diapers.Type: ApplicationFiled: September 19, 2013Publication date: March 13, 2014Inventors: Thomas Burkhart, Walter D. Daniels, Helmut Hartl, Jonathan A. Lu, Deying Kong, David Dudley Newkirk, Robert H. Turner, Lisa Reynolds, Tonny Debeer
-
Patent number: 4110227Abstract: Lubricants for synthetic fibers such as polyester and nylon are disclosed which are improved oxidation stable polyoxyalkylene lubricant compounds. Such lubricant compounds can be used alone as textile fiber lubricants or in combination with other polyoxyalkylene compounds useful as fiber lubricants but which are subject to oxidative degradation under conditions of heating at temperatures at least above 200.degree. C. An improved textile fiber is produced by the use of such fiber lubricants in conventional processes for producing continuous filament, false twist, textured yarn as well as other type yarns.The improved oxidation stable homopolymer and copolymer, i.e.Type: GrantFiled: September 19, 1977Date of Patent: August 29, 1978Assignee: BASF Wyandotte CorporationInventors: David Dudley Newkirk, Robert Bernard Login, Basil Thir
-
Patent number: 4094797Abstract: There are disclosed oxidation stable heteric or block copolymer polyoxyalkylene compositions suitable for the treatment of thermoplastic fibers, particularly polyester and nylon fibers, prior to the processing of such fibers in conventional processes to impart false twist, or to produce textured yarn or other type yarns by mechanical heat treatment and tensioning processes. The polyoxyalkylene compounds of the invention derived from lower alkylene oxides can be initiated with a difunctional aromatic compound containing reactive hydrogens such as a dihydroxyphenol to obtain an aromatic nucleus in the polymer chain and are capped on at least one end of the chain with an alpha-olefine epoxide or mixtures thereof with at least one aliphatic monocarboxylic acid. Hydroxyl functionality can be retained on one end of the molecule.Type: GrantFiled: August 1, 1977Date of Patent: June 13, 1978Assignee: BASF Wyandotte CorporationInventors: David Dudley Newkirk, Robert Bernard Login, Basil Thir