Abstract: The invention relates to a material sheet comprising at least one monolayer, wherein at least one monolayer comprises a plurality of drawn unidirectional polymer fibers having a strength of greater than 1.2 GPa, characterized in that the at least one monolayer has a thickness of less than 100 ?m and the material sheet comprises a bonding agent of less than 13 wt % relative to the total weight of the material sheet.

Abstract: Process for removing residual spin solvent from a gel spun, UHMwPE filament having an effective diameter of above 16 ?m, comprising the steps of: removing residual spin solvent from the filament to a level of below 100 ppm at elevated temperature, while keeping the filament taut. The invention also relates to gel spun UHMwPE filament having an effective diameter of above 16 ?m and a residual spin solvent residue of less than 100 ppm. Preferably the filament has a creep rate, measured at 50° C., under a load, so that the initial stress is 600 MPa, of less than 510?6 sec?1.

Abstract: Ballistic resistant sheets and molded articles formed thereof are disclosed, wherein a ballistic resistant sheet includes a stack of at least 4 monolayers, each monolayer containing unidirectionally oriented reinforcing fibers with a tensile strength of between 3.5 and 4.5 GPa, and at most 20 mass % of a matrix material, the areal density of a monolayer is at least 25 g/m2 and with the fiber direction in each monolayer being rotated with respect to the fiber direction in an adjacent monolayer. When a plurality of the ballistic resistant sheets are formed into a pile and subjected to curved molding conditions, a homogenous curved ballistic resistant molded article is formed without irregular folding of the ballistic resistant sheets in the pile.

Abstract: The invention relates to a process for making a polyolefin fiber. The process comprises the steps of providing at least one polyolefin tape; twisting or folding the at least one polyolefin tape longitudinally to obtain a precursor fiber and exposing the precursor fiber under tension to a temperature within the melting point range of the polyolefin for a time sufficient to at least partly two or more parts of the precursor fiber. The invention also relates to the fiber obtainable thereby.

Abstract: The present invention relates to a chain comprising a plurality of first links (100) interconnected with a plurality of adjacent links, the first links comprising polymeric multifilament yarns (110) and having a thickness (Formula (I)), at least at the portion where they interconnect with the adjacent links wherein said adjacent links have a thickness (Formula (II)) at least at the portion where they interconnect with the first links and wherein the ratio (Formula (II)/Formula (I)) is at least 1.2. The invention further relates to the use of the chain for storing, securing, and handling cargo, e.g. in lifting, hauling and rigging.

Abstract: Cut resistant yarns are provided which include filaments and/or staple fibers, the filaments and/or staple fibers containing a hard component to improve cut resistance of the yarn. The hard component is preferably a plurality of hard fibers having an average diameter of at most 25 microns. The yarns are made by melting or dissolving a polymer while mixing the polymer and the plurality of hard fibers followed by spinning the yarn from the mixture.

Abstract: Laminate containing a first layer and a second layer attached to the first layer, said second layer comprising high tenacity yarns, characterized in that the first layer is made out of a material selected out of the group consisting of a metal, a plywood, a solid thermoplastic or thermosetting polymer, and a composite material containing carbon fibers and/or glass fibers, and the high tenacity yarns have a tenacity of at least 0.5 GPa and are positioned in a grid structure. The laminate is damage resistance and is suitably used for the manufacture of air freight containers.

Abstract: A load bearing sheet comprises a flexible layer reinforced with a plurality of reinforcing elements arranged on one or both sides of the flexible layer. The plurality of reinforcing elements comprises at least one HMwPE or UHMwPE tape. The invention also relates to a process for making the sheet. The invention further relates to applications of the sheet.

Abstract: The invention relates to a process for manufacturing a curved product, wherein the process comprises positioning a plurality of drawn polymeric reinforcing elements onto a mandrel, locally adhering at least a part of the elements to each other, and removing the product from the mandrel. The invention also relates to a process for manufacturing a curved article, preferably an armour article, from the curved product, the process comprising positioning the curved product in a mould and compressing said product at an elevated temperature and pressure. The curved armour article has good antiballistic properties and is substantially free of wrinkles.

Abstract: The present invention relates to a chain comprising a plurality of first links (100) interconnected with a plurality of adjacent links, the first links comprising polymeric multifilament yarns (110) and having a thickness (Formula (I)), at least at the portion where they interconnect with the adjacent links wherein said adjacent links have a thickness (Formula (II)) at least at the portion where they interconnect with the first links and wherein the ratio (Formula (II)/Formula (I)) is at least 1.2. The invention further relates to the use of the chain for storing, securing, and handling cargo, e.g. in lifting, hauling and rigging.

Abstract: The invention relates to a material sheet comprising at least one monolayer, wherein at least one monolayer comprises a plurality of drawn unidirectional polymer fibers having a strength of greater than 1.2 GPa, characterised in that the at least one monolayer has a thickness of less than 100 ?m and the material sheet comprises a bonding agent of less than 13 wt % relative to the total weight of the material sheet.

Abstract: The invention relates to a process for producing gel-spun ultra high molecular weight polyethylene (UHMWPE) fibres having high tensile strengths and improved creep rates wherein the UHMWPE used in said process comprises per thousand carbon atoms between 0.1 and 1.3 methyl side groups; and between 0.08 and 0.6 of methyl end groups; and wherein the overall draw ratio (DRoverall=DRfluid×DRgel×DRsolid) is at least 7000 provided that the fluid draw ratio DRfluid=DRsp×DRag is at least 100, wherein DRsp is the draw ratio in the spinholes and DRag is the draw ratio in the air gap. The invention further relates to gel-spun UHMWPE fibres produced thereof. The gel-spun UHMWPE fibres of the invention have a tensile strength of at least 4 GPa, and a creep rate as measured at 70° C. under a load of 600 MPa of at most 6×10?7 sec?1.

Abstract: An anti-ballistic helmet (1) having a shell (2) containing mono-layers of uni-directional ultrahigh molecular weight polyethylene (UHMwPE) fibers, the shell is at its rim being connected to a reinforcing profile (3).

Abstract: Laminate containing a first layer and a second layer attached to the first layer, said second layer comprising high tenacity yarns, characterized in that the first layer is made out of a material selected out of the group consisting of a metal, a plywood, a solid thermoplastic or thermosetting polymer, and a composite material containing carbon fibers and/or glass fibers, and the high tenacity yarns have a tenacity of at least 0.5 GPa and are positioned in a grid structure. The laminate is damage resistance and is suitably used for the manufacture of air freight containers.

Abstract: Process for removing residual spin solvent from a gel spun, UHMwPE filament having an effective diameter of above 16 ?m, comprising the steps of: removing residual spin solvent from the filament to a level of below 100 ppm at elevated temperature, while keeping the filament taut. The invention also relates to gel spun UHMwPE filament having an effective diameter of above 16 ?m and a residual spin solvent residue of less than 100 ppm. Preferably the filament has a creep rate, measured at 50° C., under a load, so that the initial stress is 600 MPa, of less than 510?6 sec?1.

Abstract: The invention relates to a ballistic resistant sheet comprising a stack of at least 4 monolayers, each monolayer containing unidirectionally oriented reinforcing fibres with a tensile strength of between 3.5 and 4.5 GPa, and at most 20 mass % of a matrix material, the areal density of a monolayer is at least 25 g/m2 and with the fibre direction in each monolayer being rotated with respect to the fibre direction in an adjacent monolayer. The invention further relates to a ballistic resistant moulded article, i.e. a shaped part, comprising at least two ballistic resistant sheets according to the invention, which may be used as, for example, a panel for use in e.g. a vehicle, especially a curved panel, a hard insert e.g. for use in protective clothing and bullet resistant vests, etc. The ballistic resistant moulded article optionally may have a ceramic or a metal strike face.

Abstract: Cut resistant yarn the yarn containing filaments and/or staple fibers, the filaments and/or staple fibers containing a hard component to improve cut resistance of the yarn, wherein the hard component is a plurality of hard fibers having an average diameter of at most 25 microns.

Abstract: The invention relates to a process for making a polyethylene multifilament yarn comprising the steps of a) spinning multiple filaments from a solution comprising between 0.5 and 30 mass % of ultra high molecular weight polyethylene in a solvent; b) cooling the filament obtained to form gel filaments; c) removing at least partly the solvent from the gel filaments; d) drawing the filaments in at least one drawing step before, during or after removing the solvent, wherein the solution of step a) further comprises between 0.1 and 7 mass % of a sorbitol derivative and at step d) the filaments are drawn with a draw ratio of more than 15 to a strength of at least 1 GPa. The invention further relates to a high performance polyethylene multifilament yarn having a strength of at least 1 GPa, wherein the yarn comprises between 0.1 and 5 mass % of a sorbitol derivative.