Patents by Inventor Jorg Dahringer
Jorg Dahringer 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).
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Publication number: 20230031661Abstract: The invention relates to a biologically degradable polymer fibre made of renewable raw materials with good physical properties, as well as a method for its production and its use.Type: ApplicationFiled: January 6, 2021Publication date: February 2, 2023Inventors: Jörg Dahringer, Michael Klanert, Peter Engelhardt
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Patent number: 11105021Abstract: The invention relates to a polymer fibre with improved dispersibility, a method for producing said fibre and the use of said fibre. The polymer fibre according to the invention comprises at least one synthetic polymer and 0.1 and 20 wt. % of a silicone. The polymer forming the fibre forms a solid dispersion medium at room temperature (25° C.) for the silicone present in solid form also at room temperature (25° C.) which forms the more disperse phase. The polymer fibre according to the invention possesses an improved dispersibility and is therefore suitable for producing aqueous suspensions which are used, for example, in the formation of textile fabrics, e.g. nonwovens.Type: GrantFiled: February 26, 2020Date of Patent: August 31, 2021Assignee: Trevira GmbHInventors: Jorg Dahringer, Michael Klanert, Thomas Hesse
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Publication number: 20200277728Abstract: The invention relates to a polymer fibre having improved long-term dispersibility, a method for production thereof, and use thereof. The polymer fibre according to the invention comprises at least one synthetic polymer and a preparation present on the surface of the fibres, said preparation comprising at least one cellulose ether selected from the group carboxymethyl cellulose (CMC), methyl cellulose (MC), ethyl cellulose (EC), hydroxyethyl cellulose (HEC), hydroxypropyl cellulose (HPC), methylethyl cellulose (MEC), hydroxyethylmethyl cellulose (HEMC), hydroxypropylmethyl cellulose (HPMC), ethylhydroxyethyl cellulose, carboxymethylhydroxyethyl cellulose, and mixtures thereof. The polymer fibre according to the invention has improved dispersibility and is thus suitable for the preparation of aqueous suspensions which are used, for example, in the formation of textile fabrics, for example nonwovens.Type: ApplicationFiled: September 12, 2018Publication date: September 3, 2020Inventors: Jorg DAHRINGER, Michael KLANERT, Peter ENGLEHARDT, Antonio NOTARNICOLA
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Publication number: 20200232124Abstract: The invention relates to a polymer fibre with improved dispersibility, a method for producing said fibre and the use of said fibre. The polymer fibre according to the invention comprises at least one synthetic polymer and 0.1 and 20 wt. % of a silicone. The polymer forming the fibre forms a solid dispersion medium at room temperature (25° C.) for the silicone present in solid form also at room temperature (25° C.) which forms the more disperse phase. The polymer fibre according to the invention possesses an improved dispersibility and is therefore suitable for producing aqueous suspensions which are used, for example, in the formation of textile fabrics, e.g. nonwovens.Type: ApplicationFiled: February 26, 2020Publication date: July 23, 2020Inventors: Jorg Dahringer, Michael Klanert, Thomas Hesse
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Patent number: 10626522Abstract: The invention relates to a polymer fibre with improved dispersibility, a method for producing said fibre and the use of said fibre. The polymer fibre according to the invention comprises at least one synthetic polymer and 0.1 and 20 wt. % of a silicone. The polymer forming the fibre forms a solid dispersion medium at room temperature (25° C.) for the silicone present in solid form also at room temperature (25° C.) which forms the more disperse phase. The polymer fibre according to the invention possesses an improved dispersibility and is therefore suitable for producing aqueous suspensions which are used, for example, in the formation of textile fabrics, e.g. nonwovens.Type: GrantFiled: March 20, 2015Date of Patent: April 21, 2020Assignee: Trevira GmbHInventors: Jorg Dahringer, Michael Klanert, Thomas Hesse
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Publication number: 20170121860Abstract: The invention relates to a polymer fibre with improved dispersibility, a method for producing said fibre and the use of said fibre. The polymer fibre according to the invention comprises at least one synthetic polymer and 0.1 and 20 wt. % of a silicone. The polymer forming the fibre forms a solid dispersion medium at room temperature (25° C.) for the silicone present in solid form also at room temperature (25° C.) which forms the more disperse phase. The polymer fibre according to the invention possesses an improved dispersibility and is therefore suitable for producing aqueous suspensions which are used, for example, in the formation of textile fabrics, e.g. nonwovens.Type: ApplicationFiled: March 20, 2015Publication date: May 4, 2017Inventors: Jorg Dahringer, Michael Klanert, Thomas Hesse
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Patent number: 8895459Abstract: The present invention relates to a new bicomponent fiber, a nonwoven fabric comprising said new bicomponent fiber and sanitary articles made therefrom. The bicomponent fiber contains a polyethylene-based resin forming at least part of the surface of the fiber longitudinally continuously and is characterized by a Co-monomer Distribution Constant greater than about 45, a recrystallization temperature between 85° C. and 110° C., a tan delta value at 0.1 rad/sec from about 15 to 50, and a complex viscosity at 0.1 rad/second of 1400 Pa·sec or less. The nonwoven fabric comprising the new bicomponent fiber according to the instant invention are not only excellent in softness, but also high in strength, and can be produced in commercial volumes at lower costs due to higher thoughputs and requiring less energy.Type: GrantFiled: January 29, 2013Date of Patent: November 25, 2014Assignee: Trevira GmbHInventors: Jorg Dahringer, Bernd Blech, Werner Stefani, Werner Grasser, Mehmet Demirors, Gert Claåsen
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Patent number: 8389426Abstract: The present invention relates to a new bicomponent fiber, a nonwoven fabric comprising said new bicomponent fiber and sanitary articles made therefrom. The bicomponent fiber contains a polyethylene-based resin forming at least part of the surface of the fiber longitudinally continuously and is characterized by a Co-monomer Distribution Constant greater than about 45, a recrystallization temperature between 85° C. and 110° C., a tan delta value at 0.1 rad/sec from about 15 to 50, and a complex viscosity at 0.1 rad/second of 1400 Pa.sec or less. The nonwoven fabric comprising the new bicomponent fiber according to the instant invention are not only excellent in softness, but also high in strength, and can be produced in commercial volumes at lower costs due to higher thoughputs and requiring less energy.Type: GrantFiled: January 4, 2010Date of Patent: March 5, 2013Assignee: Trevira GmbHInventors: Jörg Dahringer, Bernd Blech, Werner Stefani, Werner Grasser, Mehmet Demirors, Gert Claasen
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Patent number: 8277709Abstract: A process is described for producing thin crimped tows from LOY, POY, or FOY filaments in a total linear density from 2 ktex to 9 ktex by filament yarns being withdrawn from creeled bobbins, folded and provided with a processing finish, then drawn or tension-uniformized and thereafter heated and stufferbox crimped. The process can be carried out in-line with numerous further processing operations. The tows are particularly useful for producing textile hygiene articles such as diapers, sanitary napkins, inserts and incontinence guards and the like.Type: GrantFiled: July 2, 2010Date of Patent: October 2, 2012Assignee: Trevira GmbHInventors: Jörg Dahringer, Michael Klanert, Bernd A. Blech, Stefan Seibel, Hartmann Huth
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Publication number: 20110274869Abstract: The invention relates to a flame-retardant, modified hollow fiber with a silicone-free soft-touch finish feature, and also to a method for production thereof and the use thereof for fiberfill fiber products, in particular in the fiber filling of clothing, cushions, furniture, insulation, quilts, filters, upholstery (e.g., automobiles), sleeping bags, mattress covers and mattresses. In general, the hollow fibers used for these applications are those with flame-retardant, phosphorus-containing compounds. Polyester hollow fibers are used preferably as hollow fibers.Type: ApplicationFiled: September 23, 2009Publication date: November 10, 2011Inventors: Kay Bernhard, Jörg Dahringer, Michael Klanert
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Publication number: 20110195214Abstract: A superabsorbent bi-component fiber, wherein component A is at least one thermoplastic polymer and component B is a compound selected from at least one thermoplastic base polymer and at least one superabsorbent polymer (SAP), and also a method for production thereof are described. The melting point of the thermoplastic contained in component A is at least 20° C. higher than the melting point of the thermoplastic contained in component B, the average grain size of the SAP is 0.5 to 10 ?m and the compound has an SAP-fraction of 0.5 to 40 wt %. The bi-component fiber can be used to produce superabsorbent textile fabrics which are used in particular in the field of hygiene and medicine.Type: ApplicationFiled: October 6, 2009Publication date: August 11, 2011Inventors: Kay Bernhard, Jörg Dahringer, Michael Klanert, Werner Stefani
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Publication number: 20110165470Abstract: The present invention relates to a new bicomponent fiber, a nonwoven fabric comprising said new bicomponent fiber and sanitary articles made therefrom. The bicomponent fiber contains a polyethylene-based resin forming at least part of the surface of the fiber longitudinally continuously and is characterized by a Co-monomer Distribution Constant greater than about 45, a recrystallization temperature between 85° C. and 110° C., a tan delta value at 0.1 rad/sec from about 15 to 50, and a complex viscosity at 0.1 rad/second of 1400 Pa.sec or less. The nonwoven fabric comprising the new bicomponent fiber according to the instant invention are not only excellent in softness, but also high in strength, and can be produced in commercial volumes at lower costs due to higher thoughputs and requiring less energy.Type: ApplicationFiled: January 4, 2010Publication date: July 7, 2011Inventors: Jörg Dahringer, Bernd Blech, Werner Stefani, Werner Grasser, Mehmet Demirors, Gert Claasen
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Publication number: 20110092934Abstract: A process is described for producing thin crimped tows from LOY, POY, or FOY filaments in a total linear density from 2 ktex to 9 ktex by filament yarns being withdrawn from creeled bobbins, folded and provided with a processing finish, then drawn or tension-uniformized and thereafter heated and stufferbox crimped. The process can be carried out in-line with numerous further processing operations. The tows are particularly useful for producing textile hygiene articles such as diapers, sanitary napkins, inserts and incontinence guards and the like.Type: ApplicationFiled: July 2, 2010Publication date: April 21, 2011Applicant: Trevira GmbHInventors: Jörg Dahringer, Michael Klanert, Bernd A. Blech, Stefan Seibel, Hartmann Huth
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Patent number: 7927530Abstract: A method for producing a skin/core type eccentric biocomponent fiber which is soft to touch and has improved latent crimp. An eccentric skin/core fiber which has a skin portion in relation to the cross-section of the fiber of 35%-70% is produced by melt spinning polyester as a core component and polyethylene as a skin component at a spinning speed of between 600 m/min-2000 m/min. The thus-obtained fiber stretches at a temperature of between 40° C.-70° C. at a ratio Wmax±20% and is then compressed in a crimped manner. The fiber, which is produced in such a manner, is very soft to touch and has an additional latent crimp. The fibrer are particularly suitable for producing hygiene products such as hygienic non-woven fabrics, and all kinds of hygienic textile flat items for producing nappies, bandages, inserts, cotton buds, and the like.Type: GrantFiled: July 26, 2003Date of Patent: April 19, 2011Assignee: Trevira GmbHInventors: Jörg Dahringer, Michael Klanert, Hartmut Huth
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Patent number: 7858111Abstract: The invention relates to a bioactive fiber product that, as a bioactively effective constituent, contains only one polyester fiber, which is largely or exclusively made of a polyester having links, which are condensed therewith and which contain phosphorous. The bioactive fiber products are suited for all textile products for which antibacterial, fungicidal, acaricidal and similar effects are sought.Type: GrantFiled: March 6, 2002Date of Patent: December 28, 2010Assignee: Trevira GmbHInventors: Hartmut Last, Bernd A. Blech, Jörg Dahringer, Stefan Seibel
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Patent number: 7833447Abstract: A process is described for producing thin crimped tows from LOY, POY, or FOY filaments in a total linear density from 2 ktex to 9 ktex by filament yarns being withdrawn from creeled bobbins, folded and provided with a processing finish, then drawn or tension-uniformized and thereafter heated and stufferbox crimped. The process can be carried out in-line with numerous further processing operations. The tows are particularly useful for producing textile hygiene articles such as diapers, sanitary napkins, inserts and incontinence guards and the like.Type: GrantFiled: June 8, 2007Date of Patent: November 16, 2010Assignee: Trevira GmbHInventors: Jörg Dahringer, Michael Klanert, Bernd A. Blech, Stefan Seibel, Hartmut Huth
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Publication number: 20070234535Abstract: A process is described for producing thin crimped tows from LOY, POY, or FOY filaments in a total linear density from 2 ktex to 9 ktex by filament yarns being withdrawn from creeled bobbins, folded and provided with a processing finish, then drawn or tension-uniformized and thereafter heated and stufferbox crimped. The process can be carried out in-line with numerous further processing operations. The tows are particularly useful for producing textile hygiene articles such as diapers, sanitary napkins, inserts and incontinence guards and the like.Type: ApplicationFiled: June 8, 2007Publication date: October 11, 2007Applicant: Trevira GmbHInventors: Jorg Dahringer, Michael Klanert, Bernd Blech, Stefan Seibel, Hartmut Huth
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Publication number: 20050093197Abstract: A method for producing a skin/core type eccentric biocomponent fibre which is soft to touch and has improved latent crimp. An eccentric skin/core fibre which has a skin portion in relation to the cross-section of the fibre of 35%-70% is produced by melt spinning polyester as a core component and polyethylene as a skin component at a spinning speed of between 600 m/min-2000 m/min. The thus-obtained fibre stretches at a temperature of between 40° C.-70° C. at a ratio Wmax±20% and is then compressed in a crimped manner. The fibre, which is produced in such a manner, is very soft to touch and has an additional latent crimp. The fibres are particularly suitable for producing hygiene products such as hygienic non-woven fabrics, and all kinds of hygienic textile flat items for producing nappies, bandages, inserts, cotton buds, and the like.Type: ApplicationFiled: July 26, 2003Publication date: May 5, 2005Inventors: Jorg Dahringer, Michael Klanert, Hartmut Huth
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Publication number: 20040166143Abstract: The invention relates to a bioactive fiber product that, as a bioactively effective constituent, contains only one polyester fiber, which is largely or exclusively made of a polyester having links, which are condensed therewith and which contain phosphorous. The bioactive fiber products are suited for all textile products for which antibacterial, fungicidal, acaricidal and similar effects are sought.Type: ApplicationFiled: April 8, 2004Publication date: August 26, 2004Inventors: Hartmut Last, Bernd A Blech, Jorg Dahringer, Stefan Seibel
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Publication number: 20030220420Abstract: A process is described for producing thin crimped tows from LOY, POY, or FOY filaments in a total linear density from 2 ktex to 9 ktex by filament yarns being withdrawn from creeled bobbins, folded and provided with a processing finish, then drawn or tension-uniformized and thereafter heated and stufferbox crimped. The process can be carried out in-line with numerous further processing operations. The tows are particularly useful for producing textile hygiene articles such as diapers, sanitary napkins, inserts and incontinence guards and the like.Type: ApplicationFiled: February 24, 2003Publication date: November 27, 2003Inventors: Jorg Dahringer, Michael Klanert, Bernd A. Blech, Stefan Seibel, Hartmann Huth