Patents by Inventor Manfred Wittner
Manfred Wittner 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).
-
Publication number: 20230374274Abstract: The disclosure relates to a method for modifying the optical appearance of a polymer, the method comprising extruding a molten polymer comprising polypropylene and a composition comprising acid scavengers consisting of zinc oxide and zinc carbonate.Type: ApplicationFiled: October 6, 2021Publication date: November 23, 2023Applicant: Lummus Novolen Technology GmbHInventors: Manfred Wittner, Volker Räntzsch
-
Patent number: 11673977Abstract: The disclosure relates to a method for modifying the rheology of a polymer and a polymeric composition obtained by the method. The composition comprises at least one organic peroxide and water in emulsion form. The polymer may comprise a polyolefin. The method comprises extruding a molten polymer and the composition and removing volatile compounds from the molten polymer.Type: GrantFiled: July 6, 2020Date of Patent: June 13, 2023Assignee: Lummus Novolen Technology GmbHInventors: Manfred Wittner, Angela Hilgers, Geoffrey Detavernier, Michael Neidhoefer
-
Publication number: 20230158734Abstract: A process and printer systems for printing a three-dimensional object are disclosed. The processes may include providing a non-crosslinked peroxydicarbonate-branched polypropylene filament, flake, pellet, or powder adapted for one of a fused deposition modeling (Arburg Plastic Freeforming) printer or a fused filament fabrication printer; and printing the non-crosslinked peroxydicarbonate-branched polypropylene with fused deposition modeling (Arburg Plastic Freeforming) printer or a fused filament fabrication printer to form a three-dimensional article. The printer systems may include one or more print heads for printing a polymer provided in filament, powder, flake, or pellet form to form a three-dimensional article; and one or more feed systems for providing a non-crosslinked peroxydicarbonate-branched polypropylene to a respective print head.Type: ApplicationFiled: January 23, 2023Publication date: May 25, 2023Applicant: Lummus Novolen Technology GmbHInventor: Manfred Wittner
-
Patent number: 11559937Abstract: A process and printer systems for printing a three-dimensional object are disclosed. The processes may include providing a non-crosslinked peroxydicarbonate-branched polypropylene filament, flake, pellet, or powder adapted for one of a fused deposition modeling (ARBURG Plastic Freeforming) printer or a fused filament fabrication printer; and printing the non-crosslinked peroxydicarbonate-branched polypropylene with fused deposition modeling (ARBURG Plastic Freeforming) printer or a fused filament fabrication printer to form a three-dimensional article. The printer systems may include one or more print heads for printing a polymer provided in filament, powder, flake, or pellet form to form a three-dimensional article; and one or more feed systems for providing a non-crosslinked peroxydicarbonate-branched polypropylene to a respective print head.Type: GrantFiled: August 18, 2017Date of Patent: January 24, 2023Assignee: LUMMUS NOVOLEN TECHNOLOGY GMBHInventor: Manfred Wittner
-
Publication number: 20200332032Abstract: The disclosure relates to a method for modifying the rheology of a polymer and a polymeric composition obtained by the method. The composition comprises at least one organic peroxide and water in emulsion form. The polymer may comprise a polyolefin. The method comprises extruding a molten polymer and the composition and removing volatile compounds from the molten polymer.Type: ApplicationFiled: July 6, 2020Publication date: October 22, 2020Applicant: Lummus Novolen Technology GmbHInventors: Manfred Wittner, Angela Hilgers, Geoffrey Detavernier, Michael Neidhoefer
-
Patent number: 10703831Abstract: The disclosure relates to a method for modifying the rheology of a polymer and a polymeric composition obtained by the method. The composition comprises at least one organic peroxide and water in emulsion form. The polymer may comprise a polyolefin. The method comprises extruding a molten polymer and the composition and removing volatile compounds from the molten polymer.Type: GrantFiled: February 10, 2016Date of Patent: July 7, 2020Assignee: Lummus Novolen Technology GmbHInventors: Manfred Wittner, Angela Hilgers, Geoffrey Detavernier, Michael Neidhoefer
-
Publication number: 20180056584Abstract: A process and printer systems for printing a three-dimensional object are disclosed. The processes may include providing a non-crosslinked peroxydicarbonate-branched polypropylene filament, flake, pellet, or powder adapted for one of a fused deposition modeling (Arburg Plastic Freeforming) printer or a fused filament fabrication printer; and printing the non-crosslinked peroxydicarbonate-branched polypropylene with fused deposition modeling (Arburg Plastic Freeforming) printer or a fused filament fabrication printer to form a three-dimensional article. The printer systems may include one or more print heads for printing a polymer provided in filament, powder, flake, or pellet form to form a three-dimensional article; and one or more feed systems for providing a non-crosslinked peroxydicarbonate-branched polypropylene to a respective print head.Type: ApplicationFiled: August 18, 2017Publication date: March 1, 2018Applicant: Lummus Novolen Technology GmbHInventor: Manfred Wittner
-
Publication number: 20180030163Abstract: The disclosure relates to a method for modifying the rheology of a polymer and a polymeric composition obtained by the method. The composition comprises at least one organic peroxide and water in emulsion form. The polymer may comprise a polyolefin. The method comprises extruding a molten polymer and the composition and removing volatile compounds from the molten polymer.Type: ApplicationFiled: February 10, 2016Publication date: February 1, 2018Applicant: Lummus Novolen Technology GmbHInventors: Manfred Wittner, Angela Hilgers, Geoffrey Detavernier, Michael Neidhoefer
-
Patent number: 8231377Abstract: The invention provides a roll assembly including a pair of cylindrical rolls that are positioned in an opposing cooperating relation for receiving a sheet material therebetween. A plurality of projections on at least one of the rolls extending radially outward from a surface thereof and a plurality of corresponding recesses is provided on the other roll. The projections and corresponding recesses are positioned and arranged on the rolls for contacting and engaging a sheet passing between the pair of rolls. The projections each include an outermost surface portion that is positioned for contacting a discrete portion of the sheet and for entering a corresponding recess on the opposite roll. When rolls rotate about their axes, the projections engage the discrete portion of the sheet material which results in the discrete portion entering the recesses with the projections so as to stretch the sheet in multiple directions.Type: GrantFiled: January 31, 2007Date of Patent: July 31, 2012Assignee: Fiberweb Corovin GmbHInventors: Manfred Wittner, Jean-Claude Abed
-
Publication number: 20120108714Abstract: A process to produce improved polypropylene nonwovens or yarns by extruding a mixture of polypropylene(s) and beta nucleating agent(s), or in the alternative, certain clarifiers, to form the improved polypropylene filaments.Type: ApplicationFiled: October 28, 2011Publication date: May 3, 2012Applicant: LUMMUS NOVOLEN TECHNOLOGY GMBHInventor: Manfred Wittner
-
Two-Dimensional Web Material, Method and Apparatus for Manufacturing the Same as Well as Use Thereof
Publication number: 20080248710Abstract: The invention relates to a two-dimensional web material made of a layer material and also a method and an apparatus for manufacturing the same, wherein the two-dimensional web material contains a non-woven material and has a Poisson's ratio of <0.2 during expansion in the machine direction.Type: ApplicationFiled: March 15, 2006Publication date: October 9, 2008Inventor: Manfred Wittner -
Publication number: 20070212966Abstract: The invention provides a roll assembly including a pair of cylindrical rolls that are positioned in an opposing cooperating relation for receiving a sheet material therebetween. A plurality of projections on at least one of the rolls extending radially outward from a surface thereof and a plurality of corresponding recesses is provided on the other roll. The projections and corresponding recesses are positioned and arranged on the rolls for contacting and engaging a sheet passing between the pair of rolls. The projections each include an outermost surface portion that is positioned for contacting a discrete portion of the sheet and for entering a corresponding recess on the opposite roll. When rolls rotate about their axes, the projections engage the discrete portion of the sheet material which results in the discrete portion entering the recesses with the projections so as to stretch the sheet in multiple directions.Type: ApplicationFiled: January 31, 2007Publication date: September 13, 2007Inventors: Manfred Wittner, Jean-Claude Abed
-
Publication number: 20070032771Abstract: An article of clothing made from an elastic nonwoven web, wherein the elastic nonwoven web comprises a plurality of multicomponent strands having first and second polymer components longitudinally coextensive along the length of the strands, said first component comprising an elastomeric polymer, and said second polymer component comprising a polymer less elastic than the first polymer component.Type: ApplicationFiled: May 24, 2006Publication date: February 8, 2007Inventors: Jean-Claude Abed, Manfred Wittner