Patents Assigned to Faserforschung Denkendorf
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Patent number: 11585015Abstract: The invention relates to a process for the production of polymer fibers from polymers dissolved in ionic liquids by means of an air gap spinning process, characterized in that a) a spinning solution that contains an ionic liquid and a dissolved polymer is produced; b) said spinning solution is guided through an extruder before it is divided into fibers via a die; and c) the obtained fibers are guided via an air gap through a coagulation bath.Type: GrantFiled: February 1, 2017Date of Patent: February 21, 2023Assignee: DEUTSCHE INSTITUTE FUR TEXTIL-UND FASERFORSCHUNG DENKENDORFInventors: Falko Abels, Tomasz Cwik, Ronald Beyer, Frank Hermanutz
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Patent number: 11421125Abstract: The invention relates to a marking composition, by means of which better protection of goods than hitherto available can be achieved independently of the coloring of the goods. The marking composition comprises an infrared-absorbing particulate component and carbon derivative, wherein the weight ratio of infrared-absorbing component to carbon derivative is in the range of approx. 10:1 to approx. 10,000:1.Type: GrantFiled: January 16, 2020Date of Patent: August 23, 2022Assignees: DEUTSCHE INSTITUTE FÜR TEXTIL- UND FASERFORSCHUNG DENKENDORF, FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.Inventors: Heinz Greisiger, Thadeus Schauer, Marc Entenmann, Henry Lehman, Reinhold Schneider
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Patent number: 10995429Abstract: The invention relates to a process for producing carbon fibers from cellulosic fibers, characterized in that cellulosic fibers, which contain a sulfonic acid salt of formula (I), wherein R1 represents a hydrocarbon group and K+ represents a cation, are converted into carbon fibers.Type: GrantFiled: February 1, 2017Date of Patent: May 4, 2021Assignee: DEUTSCHE INSTITUTE FURTEXTIL-UND FASERFORSCHUNG DENKENDORFInventors: Falko Abels, Martin Merger, Tomasz Cwik, Klemens Massonne, Johanna Sporl, Frank Hermanutz, Michael R. Buchmeiser
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Patent number: 10869513Abstract: A composite structure for stab protection includes layers of flat structures placed on top of each other, and an embedding material, wherein, in at least some of the layers placed on top of each other, the flat structures of adjacent layers are offset relative to one another, the flat structures of the composite structure are at least partially embedded in the embedding material, and the composite structure includes separated connecting elements, wherein before they are separated, the separated connecting elements have connected at least some of the flat structures of adjacent layers with one another.Type: GrantFiled: February 20, 2017Date of Patent: December 22, 2020Assignees: Deutsche Institute für Textil-und Faserforschung Denkendorf, W + R GmbHInventors: Thomas Stegmaier, Andreas Scherrieble, Hannes Junger
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Patent number: 10487423Abstract: A sensor yarn (10) having a thread core (11) around which first and second conductors (12, 13) are helically wound. The two conductors (12, 13) are electrically insulated from each other and from the thread core (11). The two conductors (12, 13) form a capacitive component (15) together with the thread core (11). In one embodiment, the sensor yarn (10a) has a capacitance (Cl) per unit of length that changes in the direction of extent (E) of the sensor yarn. This can be accomplished by a change in the winding geometry of the first or second conductors (12, 13) or by a change of the relative permittivity (E) of the sensor yarn (10). In another embodiment, the sensor yarn (10b) has photosensitive material (30) and a length change is effected by an incident to the light (L). As a result of a length change or other deformation of the sensor yarn (10a, 10b), the total capacitance (CG) of the sensor yarn (10a, 10b) changes, which can be determined by means of an evaluating unit (17).Type: GrantFiled: March 20, 2015Date of Patent: November 26, 2019Assignee: Deutsche Institute für Textil-und Faserforschung DenkendorfInventors: Christoph Riethmüller, Bastian Baesch, Simon Hoinkis
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Patent number: 10443809Abstract: An arrangement (10) for generating a light effect (26) includes an obscuration sheet material (11) and a divergence sheet material (12) arranged in spaced apart relation to a rear side (23) of an effect sheet material (13). The obscuration sheet material (11) has at least one transmission region (17) and at least one shielding region (18). On the light entry side (15), which faces away from the effect sheet material (13), light (L) impinges on the obscuration sheet material (11) and is severely reduced or completely shielded in shielding region (18), while light (L) passes through the at least one transmission region (17). By means of the divergence sheet material (12), divergent light rays (LD) are produced at the corresponding transmission region (17), which divergent light rays impinge on the rear side (23) of the effect sheet material (13) and generate a light effect (26) for a viewer (25) looking at the viewing side (24).Type: GrantFiled: April 7, 2015Date of Patent: October 15, 2019Assignee: Deutsche Institute für Textil—und Faserforschung DenkendorfInventors: Christoph Riethmüller, Bastian Baesch, Holger Illg
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Patent number: 10118990Abstract: The invention relates to a flame-resistant polyamide as a product of the condensation of dicarboxylic acids with diamines and with a flame-retardant phosphorus compound, which flame-resistant polyamide is characterized in that the flame-resistant polyamide FR contains, in the main chain thereof phosphinic acid amide structural units of formula (II) —PO(R1)—NH— (II) in addition to the amide structural units of formula (I) CO—NH— (I), in which formula (II) RI means hydrogen or an organic group and can differ in the individual phosphinic acid amide structural units within the main chain and that the polyamide FR achieves a relative viscosity, measured as a 1% solution in 96% sulfuric acid at 25° C., of at least 2.0 (in accordance with DIN 51562). The invention further relates to a method for producing said flame-resistant polyamide FR.Type: GrantFiled: October 23, 2017Date of Patent: November 6, 2018Assignee: DEUTSCHE INSTITUTE FUR TEXTILUND FASERFORSCHUNG DENKENDORFInventors: Rainer Gutmann, Sabine Gneiting
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Publication number: 20170107647Abstract: A sensor yarn (10) having a thread core (11) around which first and second conductors (12, 13) are helically wound. The two conductors (12, 13) are electrically insulated from each other and from the thread core (11). The two conductors (12, 13) form a capacitive component (15) together with the thread core (11). In one embodiment, the sensor yarn (10a) has a capacitance (Cl) per unit of length that changes in the direction of extent (E) of the sensor yarn. This can be accomplished by a change in the winding geometry of the first or second conductors (12, 13) or by a change of the relative permittivity (E) of the sensor yarn (10). In another embodiment, the sensor yarn (10b) has photosensitive material (30) and a length change is effected by an incident to the light (L). As a result of a length change or other deformation of the sensor yarn (10a, 10b), the total capacitance (CG) of the sensor yarn (10a, 10b) changes, which can be determined by means of an evaluating unit (17).Type: ApplicationFiled: March 20, 2015Publication date: April 20, 2017Applicant: Deutsche Institute für Textil-und Faserforschung DenkendorfInventors: Christoph Riethmüller, Bastian Baesch, Simon Hoinkis
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Patent number: 9216100Abstract: A medical device includes yarns made of a shape memory material and polymer yarns, wherein the yarns made of said shape memory material include polymer sheathing.Type: GrantFiled: May 30, 2009Date of Patent: December 22, 2015Assignee: Deutsche Institute für Textil-und Faserforschung Denkendorf Stiftung des öffentlichen RechtsInventors: Jürgen Seibold, Erhard Müller, Karel Volenec, Petr Sittner, Ludek Heller, Jan Pilch
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Patent number: 8950168Abstract: A hybrid yarn for producing molded parts having a thermoplastic matrix and reinforcing fibers embedded therein. The hybrid yarn includes a core substantially made of staple fibers aligned in a straight line in the longitudinal direction of the hybrid yarn, and a cover made substantially of staple fibers wound helically about the core. The staple fibers forming the core and the staple fibers forming the cover each are made of an intimate mixture of thermoplastic matrix fibers and reinforcing fibers.Type: GrantFiled: April 27, 2011Date of Patent: February 10, 2015Assignee: Deutsche Institute fur Textil-und Faserforschung DenkendorfInventors: Uwe Heitmann, Heinrich Planck
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Publication number: 20130104515Abstract: The invention relates to a hybrid yarn (1) for producing molded parts (8) comprising a thermoplastic matrix and reinforcing fibres (4, 5, 6, 7) embedded therein, wherein the hybrid yarn (1) comprises a core (2) substantially made of staple fibres (4, 5) aligned in a straight line in the longitudinal direction (LR) of the hybrid yarn (1), and a cover (3) made substantially of staple fibres (6, 7) wound helically about the core (2), wherein the staple fibres (4, 5) forming the core (2) and the staple fibres (6, 7) forming the cover (3) each are made of an intimate mixture (4, 5; 6, 7) of thermoplastic matrix fibres (4, 6) and reinforcing fibres (5, 7).Type: ApplicationFiled: April 27, 2011Publication date: May 2, 2013Applicant: Deutsche Institute fur Textil- und Faserforschung DenkendorfInventors: Uwe Heitmann, Heinrich Planck
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Patent number: 8288449Abstract: Latent photoactivatable precatalysts are provided for metathesis polymerization and has the general formula (Ru(NHC)n(X1)m(L)0p+((X2)?)p. Wherein NHC is an N-heterocyclic carbene, n=1 or 2; X1 is a C1-C18 mono or polyhalogenized carbolic acid or trifluoromethane sulfate; X2 is a C1-C18 mono or polyhalogenized carbolic acid, trifluoromethane sulfate, tetrafluoroborate, hexafluorophosphate, or hexafluoroantimonate; m=0, 1, or 2 and L=a C4-C18 carbolic acid nitrile or a C4-C18 carbolic acid di or trinitrile; o=6?n?m or 5?n?m and p=2?m.Type: GrantFiled: January 16, 2009Date of Patent: October 16, 2012Assignee: Deutsche Institute fuer Textil- und Faserforschung DenkendorfInventors: Michael R. Buchmeiser, Dongren Wang
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Publication number: 20120116492Abstract: A medical device includes yarns made of a shape memory material and polymer yarns, wherein the yarns made of said shape memory material include polymer sheathing.Type: ApplicationFiled: May 30, 2009Publication date: May 10, 2012Applicant: Deutsche Institute für Textil-und Faserforschung Denkendorf Stiflung des öffentlichen RechtsInventors: Jürgen Seibold, Erhard Müller, Karel Volenec, Petr Sittner, Ludek Heller, Jan Pilch
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Patent number: 8104392Abstract: The invention relates to a rod-shaped fiber composite material (400) composed of a matrix (412) and a circular braid (402) embedded into the matrix. To increase the stability of the fiber composite material (400) and also to perform ducting functions for electricity and fluids, the wall of the circular braid is provided with wall chambers (408) which are separated by a phase boundary from the matrix (412) of the fiber composite material (400). These wall chambers (408) lead to inner and outer sections of the wall of the circular braid (402) being spaced apart, which is useful for the stability with regard to flexing and torsional loading in particular. Rod-shaped fiber composite materials (400) according to the invention can be used for creating stable structural components as well as for producing efficiently protected ducts. The invention further relates to an apparatus and a process which are useful for producing fiber composite material according to the invention.Type: GrantFiled: June 8, 2006Date of Patent: January 31, 2012Assignee: Deutsche Institute fur Textil-und Faserforschung Denkendorf Stiftung Des Oeffentlichen RechtsInventors: Markus Milwich, Carsten Linti, Thomas Stegmaier, Heinrich Planck, Thomas Speck, Axel Herrmann, Olga Speck
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Patent number: 8042324Abstract: The invention relates to an apparatus for winding a roving provided with a protective twist onto a roving bobbin, containing a bobbin mounting for the rotatable mounting of a roving bobbin and a traversing device for traversing in the bobbin axial direction the roving to be wound. The traversing device comprises a driven pair of winding delivery rollers arranged directly in front of the roving bobbin and having a nip line through which the roving to be wound is guided.Type: GrantFiled: April 24, 2009Date of Patent: October 25, 2011Assignees: Maschinenfabrik Rieter AG, Faserforschung DenkendorfInventors: Christian Griesshammer, David Gehring, Fabian Lehner, Pascal Marti
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Patent number: 8042323Abstract: An apparatus and associated method for spinning staple fibers on a ring spindle machine includes a ring spindle disposed downstream of a drawing frame outlet. A thread guiding device is disposed between the drawing frame outlet and the ring spindle and includes a twisting apparatus that is magnetically coupled with the ring spindle so as to rotate at the same speed as the ring spindle. The twisting apparatus has a thread braking device configured along a path of the thread through the twisting apparatus. An attachment configured at a top of the ring spindle has a plurality of circumferential grooves configured to catch the thread coming from the twisting apparatus and being wound onto the ring spindle.Type: GrantFiled: February 18, 2008Date of Patent: October 25, 2011Assignee: Deutsche Institut fur Textil-und Faserforschung DenkendorfInventors: Peter Artzt, Jurgen Schneider, Uwe Heitmann
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Publication number: 20110003905Abstract: Latent photoactivatable precatalysts are provided for metathesis polymerization and has the general formula (Ru(NHC)n(X1)m(L)0p+((X2)?)p. Wherein NHC is an N-heterocyclic carbene, n=1 or 2; X1 is a C1-C18 mono or polyhalogenized carbolic acid or trifluoromethane sulfate; X2 is a C1-C18 mono or polyhalogenized carbolic acid, trifluoromethane sulfate, tetrafluoroborate, hexafluorophosphate, or hexafluoroantimonate; m=0, 1, or 2 and L=a C4-C18 carbolic acid nitrile or a C4-C18 carbolic acid di or trinitrile; o=6?n?m or 5?n?m and p=2?m.Type: ApplicationFiled: January 16, 2009Publication date: January 6, 2011Applicant: Deutsche Institute Fuer Textil und Faserforschung DenkendorfInventors: MIichel R. Buchmeiser, Dongren Wang