Dsm IP Assets B.v.

Avient Protective Materials B.v.

Harm Van Der Werff

Roelof R Marissen

Jacobus Johannes Mencke

Cyril Clerici

Johannes Hendrikus Marie Heijnen

Joseph Arnold Paul Maria Simmelink

David S Cordova

Leonardus Gerardus Bernardus Bremer

Marko Dorschu

Johann Van Elburg

Leonard Josef Arnold Nielaba

Koen Van Putten

Claudia Maria Vaz

Raul Marcelino Perez Graterol

Johannes Maria Mathias Wilms

Ernst Jan Van Klinken

Jozef Maria Rudi Hendrik Goossens

Marcel Simor

Ales Fiala

Roman Stepanyan

Evert Florentinus Florimondus De Danschutter

Brad Alan Dickinson

Petrus Henricus Maria Elemans

Francois Antoine Maria Op Den Buijsch

Bengisu Corakci

Ulrich Heisserer

Roelef Marissen

Tongxi Yu

Shilun Ruan

Ralph Schielen

David Cordova

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(cN/dtex)=f×n×dpf, 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.

Ultra high molecular weight polyethylene multifilament yarn

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×dpf, 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.

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&#xd7;n&#xd7;dpf, 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.

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&#xb0; 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.

High performance fibers composite sheet

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&#xb0; and up to 90&#xb0;, 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/m, said composite sheet having an areal density of between 50 and 500 g/mwherein the composite sheet has an areal density normalized in-plane shear force measured at 25&#xb0; C. evaluated according to the bias extension test method of at least 0.40 N&#xb7;m&#xb7;g-1 at 10 mm clamp displacement.

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.

Method for treating an elongated object, apparatus and method

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&#xd7;n&#xd7;dpf, 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.

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 Tof less than 0&#xb0; 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&#x2265;0.146*IV, as well as gel-spun elongated object having a tenacity and a filament titer in tex (t) such that Ten&#x2265;1.40*t. The invention also relates to articles containing said gel-spun elongated objects.

Process for making high-strength polylactic acid filament

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 &#x3bc;m, preferably at most 0.5 &#x3bc;m. Methods of making the HPPE members and various medical devices and repair products which include the HPPE members are also provided.

HPPE member and method of making a HPPE member

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 &#x3b1; 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&#xb0; 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.

Process for the manufacture of a multilayer material sheet, multilayer material sheet and use hereof

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&#xb0; C. or lower. The multilayer material sheet has a reduced uptake of liquids.

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 &#x3bc;m, preferably the radiopaque component has a particle size if at most 0.5 &#x3bc;m. The invention also concerns a method of making the HPPE member and various medical devices and repair products comprising the HPPE member.

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.

Flexible composite material and use hereof, process for making a flexible composite material

The invention relates to an armor comprising in front to back order at least one rigid first panel comprising inorganic fibers and at least one second panel comprising polymeric fibers, characterized in that the at least one rigid first panel has a flexural strength of at least 300 MPa and the at least one second panel has a flexural strength of at most 250 MPa.

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Echt, Netherlands

Harm Van Der Werff