Patents by Inventor Harm van der Werff
Harm van der Werff 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: 20230366129Abstract: Process for spinning multifilament yarn containing n filaments are provided, wherein an ultra-high molecular weight polyethylene (UHMWPE) solution containing UHMWPE polymer and a solvent for the UHMWPE polymer are spun through n spin-holes of a spin plate and drawn before, during or after removal of the solvent to thereby obtain the multifilament yarn containing n filaments, the yarn having a tenacity (Ten) as expressed in cN/dtex of Ten(eN/dtex) = f×n-0.05×dpf-0.15, wherein Ten is at least 39 cN/dtex, n is at least 25, f is a factor of at least 62.0 and dpf is the dtex per filament.Type: ApplicationFiled: July 12, 2023Publication date: November 16, 2023Inventors: Jacobus Johannes MENCKE, Johannes Hendrikus Marie HEIJNEN, Harm VAN DER WERFF
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Patent number: 11746442Abstract: Multifilament yarn containing n filaments are provided, wherein the filaments are obtained by spinning an ultra-high molecular weight polyethylene (UHMWPE), said yarn having a tenacity (Ten) as expressed in cN/dtex of Ten(cN/dtex)=f×n?0.05×dpf?0.15, wherein Ten is at least 39 cN/dtex, n is at least 25, f is a factor of at least 58 and dpf is the dtex per filament.Type: GrantFiled: December 14, 2021Date of Patent: September 5, 2023Assignee: AVIENT PROTECTIVE MATERIALS B.V.Inventors: Jacobus Johannes Mencke, Johannes Hendrikus Marie Heijnen, Harm Van Der Werff
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Publication number: 20230191666Abstract: The invention relates to a process for producing a ballistic-resistant curved molded article said process comprising forming a stack of a plurality of composite sheets, pressing the stack comprising the composite sheets at a temperature of between 80° C. to 150° C. and a pressure of between 10 and 400 bar for at least 5 minutes to obtain a curved molded article, cooling the compacted stack to a temperature below 80° C. while maintaining the pressure above 10 bar, releasing the pressure from the cooled curved molded article; wherein the composite sheets comprise unidirectionally aligned high tenacity polyethylene fibers and a matrix comprising a polyethylene resin being a homopolymer or copolymer of ethylene having a density of between 870 to 980 kg/m3 when measured according to ISO1183 and a melt flow index of between 0.5 and 50 g/10 min when measured according to ASTM 1238B-13 at a temperature of 190° C. and a weight of 21.6 kg.Type: ApplicationFiled: December 14, 2018Publication date: June 22, 2023Inventors: Johann VAN ELBURG, Harm VAN DER WERFF, Roelof MARISSEN, Ulrich HEISSERER, Raul Marcelino PEREZ GRATEROL
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Patent number: 11661485Abstract: The invention relates to a composite sheet, and a ballistic resistant article, comprising unidirectionally aligned high performance polyethylene (HPPE) fibers and a polymeric resin, wherein said polymeric resin comprises a homopolymer or copolymer of ethylene and wherein said polymeric resin has a density as measured according to ISO1183 of between 930 and 980 kg/m3, and a peak melting temperature of from 115 to 140° C.; and said polymeric resin is present in an amount of from 5 to 25% by weight based on the total weight of the composite sheet. It further relates to a method for manufacturing a composite sheet comprising assembling HPPE fibers to a sheet, applying an aqueous suspension of a polymeric resin to the HPPE fibers, partially drying the aqueous suspension, optionally applying a temperature and/or a pressure treatment to the composite sheet.Type: GrantFiled: March 19, 2018Date of Patent: May 30, 2023Assignee: AVIENT PROTECTIVE MATERIALS B.V.Inventors: Brad Alan Dickinson, Harm Van Der Werff, Raul Marcelino Perez Graterol, Petrus Henricus Maria Elemans, Leonardus Gerardus Bernardus Bremer, Francois Antoine Maria Op Den Buijsch, Roelof Marissen
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Publication number: 20220339905Abstract: Composite sheets include at least two adjacent fibrous monolayers of unidirectionally aligned high tenacity polyethylene fibers, whereby the direction of orientation between the polyethylene fibers of said two fibrous layers differs by at least 80° and up to 90°, the fibers having a tenacity of at least 1.5 N/tex, the fibers being in a matrix comprising a homopolymer or copolymer of ethylene and wherein the homopolymer or copolymer of ethylene has a density as measured according to ISO1183 of between 870 to 980 kg/m3. The composite sheets have an areal density of between 50 and 500 g/m2, wherein the composite sheets have an areal density normalized in-plane shear force measured at 25° C. evaluated according to a bias extension test method variant of ASTM D3518 of at least 0.40 N·m2·g?1 and lower than 5.0 N·m2·g?1 at 10 mm clamp displacement and an areal density normalized in-plane shear force measured at 110° C. and clamp displacement of 10 mm of at least 0.01 N·m2·g?1 and lower than 0.20 N·m2·g?1.Type: ApplicationFiled: June 30, 2022Publication date: October 27, 2022Inventors: Johann VAN ELBURG, Harm VAN DER WERFF, Roelof MARISSEN, Ulrich HEISSERER, Raul Marcelino PEREZ GRATEROL
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Patent number: 11433640Abstract: The invention relates to a composite sheet comprising at least two adjacent fibrous monolayers of unidirectionally aligned high tenacity polyethylene fibers, whereby the direction of orientation between the polyethylene fibers of said two fibrous layers differs by at least 80° and up to 90°, the fibers having a tenacity of at least 1.5 N/tex, said fibers being in a matrix comprising a homopolymer or copolymer of ethylene and wherein said homopolymer or copolymer of ethylene has a density as measured according to IS01183 of between 870 to 980 kg/m3, said composite sheet having an areal density of between 50 and 500 g/m2 wherein the composite sheet has an areal density normalized in-plane shear force measured at 25° C. evaluated according to the bias extension test method of at least 0.40 N·m2·g-1 at 10 mm clamp displacement.Type: GrantFiled: December 17, 2018Date of Patent: September 6, 2022Assignee: DSM IP ASSETS B.V.Inventors: Johann Van Elburg, Harm Van Der Werff, Roelof Marissen, Ulrich Heisserer, Raul Marcelino Perez Graterol
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Patent number: 11420227Abstract: The invention relates to a method for treating an elongated object using a plasma process. The method comprises the steps of providing an elongated object in a planar electrode structure, and applying potential differences between electrodes of an electrode structure to generate the plasma process. Further, the method comprises at least partially surrounding the elongated object by a unitary section of the guiding structure, the electrode structure being associated with the unitary section.Type: GrantFiled: March 27, 2018Date of Patent: August 23, 2022Assignee: DSM IP ASSETS B.V.Inventors: Marcel Simor, Ales Fiala, Harm van der Werff
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Publication number: 20220143950Abstract: Multifilament yarn containing n filaments are provided, wherein the filaments are obtained by spinning an ultra-high molecular weight polyethylene (UHMWPE), said yarn having a tenacity (Ten) as expressed in cN/dtex of Ten(cN/dtex)=f×n?0.05×dpf ?0.15, wherein Ten is at least 39 cN/dtex, n is at least 25, f is a factor of at least 58 and dpf is the dtex per filament.Type: ApplicationFiled: December 14, 2021Publication date: May 12, 2022Inventors: Jacobus Johannes MENCKE, Johannes Hendrikus Marie HEIJNEN, Harm VAN DER WERFF
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Patent number: 11230797Abstract: The invention relates to a multifilament yarn containing n filaments, wherein the filaments are obtained by spinning an ultra-high molecular weight polyethylene (UHMWPE), said yarn having a tenacity (Ten) as expressed in cN/dtex of Ten(cN/dtex)=f×n?0.05×dpf?0.15, wherein Ten is at least 39 cN/dtex, n is at least 25, f is a factor of at least 58 and dpf is the dtex per filament.Type: GrantFiled: December 14, 2012Date of Patent: January 25, 2022Assignee: DSM IP ASSETS B.V.Inventors: Jacobus Johannes Mencke, Johannes Hendrikus Marie Heijnen, Harm Van Der Werff
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Patent number: 11111607Abstract: The present invention relates to a process for making high-strength polylactic acid elongated object comprising the steps of making a solution of polylactic acid in a solvent at a concentration of 5 to 50 mass %; spinning the solution through a spinplate comprising at least 1 spinhole to form a fluid elongated object; cooling the fluid elongated object with a cooling medium to form a solvent-containing gel elongated object; removing at least partly the solvent from the gel elongated object to form a solid elongated object; and drawing the elongated object while applying a draw ratio of at least 2, to form a high strength PLA elongated object, characterized in that the cooling medium has a temperature Tq of less than 0° C. The present invention also relates to gel-spun elongated objects comprising PLA with an IV in the range of 4-40 dl/g, and having a tenacity in N/tex such that Ten?0.146*IV, as well as gel-spun elongated object having a tenacity and a filament titer in tex (t) such that Ten?1.40*t ?0.3.Type: GrantFiled: July 21, 2017Date of Patent: September 7, 2021Assignee: DSM IP ASSETS B.V.Inventors: Harm Van Der Werff, Bengisu Corakci, Roman Stepanyan
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Publication number: 20210115203Abstract: The invention relates to a composite sheet, and a ballistic resistant article, comprising unidirectionally aligned high performance polyethylene (HPPE) fibers and a polymeric resin, wherein said polymeric resin comprises a homopolymer or copolymer of ethylene and wherein said polymeric resin has a density as measured according to ISO1183 of between 930 and 980 kg/m3, and a peak melting temperature of from 115 to 140° C.; and said polymeric resin is present in an amount of from 5 to 25% by weight based on the total weight of the composite sheet. It further relates to a method for manufacturing a composite sheet comprising assembling HPPE fibers to a sheet, applying an aqueous suspension of a polymeric resin to the HPPE fibers, partially drying the aqueous suspension, optionally applying a temperature and/or a pressure treatment to the composite sheet.Type: ApplicationFiled: March 19, 2018Publication date: April 22, 2021Inventors: Brad Alan DICKINSON, Harm VAN DER WERFF, Raul Marcelino PEREZ GRATEROL, Petrus Henricus Maria ELEMANS, Leonardus Gerardus Bernardus BREMER, Francois Antoine Maria OP DEN BUIJSCH, Roelof MARISSEN
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Publication number: 20210114340Abstract: The invention relates to a composite sheet comprising at least two adjacent fibrous monolayers of unidirectionally aligned high tenacity polyethylene fibers, whereby the direction of orientation between the polyethylene fibers of said two fibrous layers differs by at least 80° and up to 90°, the fibers having a tenacity of at least 1.5 N/tex, said fibers being in a matrix comprising a homopolymer or copolymer of ethylene and wherein said homopolymer or copolymer of ethylene has a density as measured according to IS01183 of between 870 to 980 kg/m3, said composite sheet having an areal density of between 50 and 500 g/m2 wherein the composite sheet has an areal density normalized in-plane shear force measured at 25° C. evaluated according to the bias extension test method of at least 0.40 N·m2·g-1 at 10 mm clamp displacement.Type: ApplicationFiled: December 17, 2018Publication date: April 22, 2021Inventors: Johann VAN ELBURG, Harm VAN DER WERFF, Roelof MARISSEN, Ulrich HEISSERER, Raul Marcelino PEREZ GRATEROL
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Patent number: 10485900Abstract: High performance polyethylene (HPPE) members include at least 5 wt-% of a radiopaque component. The HPPE members are biocompatible and the radiopaque component is a particulate at least partially arranged inside a HPPE filament of the HPPE members. The radiopaque component may have a particle size of at most 1 ?m, preferably at most 0.5 ?m. Methods of making the HPPE members and various medical devices and repair products which include the HPPE members are also provided.Type: GrantFiled: May 31, 2017Date of Patent: November 26, 2019Assignee: DSM IP ASSETS B.V.Inventors: Claudia Maria Vaz, Leonardus Gerardus Bernardus Bremer, Joseph Arnold Paul Maria Simmelink, Marko Dorschu, Jozef Maria Rudi Hendrik Goossens, Harm van der Werff
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Publication number: 20190284726Abstract: The present invention relates to a process for making high-strength polylactic acid elongated object comprising the steps of making a solution of polylactic acid in a solvent at a concentration of 5 to 50 mass %; spinning the solution through a spinplate comprising at least 1 spinhole to form a fluid elongated object; cooling the fluid elongated object with a cooling medium to form a solvent-containing gel elongated object; removing at least partly the solvent from the gel elongated object to form a solid elongated object; and drawing the elongated object while applying a draw ratio of at least 2, to form a high strength PLA elongated object, characterized in that the cooling medium has a temperature Tq of less than 0° C. The present invention also relates to gel-spun elongated objects comprising PLA with an IV in the range of 4-40 dl/g, and having a tenacity in N/tex such that Ten?0.146*IV, as well as gel-spun elongated object having a tenacity and a filament titer in tex (t) such that Ten?1.40*t ?0.3.Type: ApplicationFiled: July 21, 2017Publication date: September 19, 2019Inventors: Harm VAN DER WERFF, Bengisu CORAKCI, Roman STEPANYAN
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Process for the manufacture of a multilayer material sheet, multilayer material sheet and use hereof
Patent number: 10315380Abstract: The invention relates to a process for the manufacture of a multilayer material sheet comprising unidirectional high performance fibers, the process comprising the steps of positioning the fibers in a parallel fashion, consolidation of the fibers to obtain a monolayer, stacking at least two monolayers such that the fiber direction in one monolayer is at an angle ? to the direction of the fibers in an adjacent monolayer and fixation whereby the stack of at least two monolayers is subjected to a pressure and temperature treatment for a duration of a least 2 seconds, followed by cooling the stack under pressure to a temperature of 120° C. or lower. The invention furthermore relates to the multilayer material sheet obtainable with the process according to the invention. This multilayer material sheet has a reduced uptake of liquids.Type: GrantFiled: December 16, 2010Date of Patent: June 11, 2019Assignee: DSM IP ASSETS B.V.Inventors: Koen van Putten, Johannes Maria Mathias Wilms, Ernst Jan van Klinken, Harm van der Werff, Leonard Josef Arnold Nielaba, Roelof Marissen -
Process for the manufacture of a multilayer material sheet, multilayer material sheet and use hereof
Patent number: 10071536Abstract: Multilayer material sheets containing unidirectional high performance fibers are obtained by a process which includes the steps of positioning the fibers in a parallel fashion, consolidation of the fibers to obtain a monolayer, stacking at least two monolayers such that the fiber direction in one monolayer is at an angle a to the direction of the fibers in an adjacent monolayer and fixation whereby the stack of at least two monolayers is subjected to a pressure and temperature treatment for a duration of a least 2 seconds, followed by cooling the stack under pressure to a temperature of 120° C. or lower. The multilayer material sheet has a reduced uptake of liquids.Type: GrantFiled: July 23, 2015Date of Patent: September 11, 2018Assignee: DSM IP ASSETS B.V.Inventors: Koen van Putten, Johannes Maria Mathias Wilms, Ernst Jan van Klinken, Harm van der Werff, Leonard Josef Arnold Nielaba, Roelof Marissen -
Publication number: 20170319753Abstract: The invention concerns a high performance polyethylene (HPPE) member comprising at least 5 wt-% of a radiopaque component, the HPPE member is biocompatible and the radiopaque component is a particulate at least partially arranged inside a HPPE filament of the HPPE member. Furthermore, the radiopaque component has a particle size of at most 1 ?m, preferably the radiopaque component has a particle size of at most 0.5 ?m. The invention also concerns a method of making the HPPE member and various medical devices and repair products comprising the HPPE member.Type: ApplicationFiled: May 31, 2017Publication date: November 9, 2017Inventors: Claudia Maria VAZ, Leonardus Gerardus Bernardus BREMER, Joseph Arnold Paul Maria SIMMELINK, Marko DORSCHU, Jozef Maria Rudi Hendrik GOOSSENS, Harm van der WERFF
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Patent number: 9687593Abstract: The invention concerns a high performance polyethylene (HPPE) member comprising at least 5 wt-% of a radiopaque component, the HPPE member is biocompatible and the radiopaque component is a particulate at least partially arranged inside a HPPE filament of the HPPE member. Furthermore, the radiopaque component has a particle size of at most 1 ?m, preferably the radiopaque component has a particle size if at most 0.5 ?m. The invention also concerns a method of making the HPPE member and various medical devices and repair products comprising the HPPE member.Type: GrantFiled: December 12, 2011Date of Patent: June 27, 2017Assignee: DSM IP ASSETS B.V.Inventors: Claudia Maria Vaz, Leonardus Gerardus Bernardus Bremer, Joseph Arnold Paul Maria Simmelink, Marko Dorschu, Jozef Maria Rudi Hendrik Goossens, Harm van der Werff
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Patent number: 9623626Abstract: The invention relates to a flexible composite material. This material comprises at least 2 layers comprising high strength fibers, said at least 2 layers comprise consolidated elements and unconsolidated elements, the unconsolidated elements being in contact with the consolidated elements. The flexible composite material shows a better anti-ballistic performance compared to materials known so far.Type: GrantFiled: February 28, 2012Date of Patent: April 18, 2017Assignee: DSM IP ASSETS B.V.Inventors: Cyril Clerici, Harm Van der Werff
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PROCESS FOR THE MANUFACTURE OF A MULTILAYER MATERIAL SHEET, MULTILAYER MATERIAL SHEET AND USE HEREOF
Publication number: 20150328860Abstract: Multilayer material sheets containing unidirectional high performance fibers are obtained by a process which includes the steps of positioning the fibers in a parallel fashion, consolidation of the fibers to obtain a monolayer, stacking at least two monolayers such that the fiber direction in one monolayer is at an angle a to the direction of the fibers in an adjacent monolayer and fixation whereby the stack of at least two monolayers is subjected to a pressure and temperature treatment for a duration of a least 2 seconds, followed by cooling the stack under pressure to a temperature of 120° C. or lower. The multilayer material sheet has a reduced uptake of liquids.Type: ApplicationFiled: July 23, 2015Publication date: November 19, 2015Applicant: DSM IP ASSETS B.V.Inventors: Koen van PUTTEN, Johannes Maria Mathias WILMS, Ernst Jan van KLINKEN, Harm van der WERFF, Leonard Josef Arnold NIELABA, Roelof MARISSEN