Process for the production of a shaped article
AssigneeDsm IP Assets B.V.
InventorsFloribertus C.H. Mokveld, Jean H.M. Beugels
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Abstract
The invention relates to a process for the production of a shaped article comprising the compression of one or more fiber layers containing polyolefin fibers. The invention also relates to shaped articles obtainable with the process according to the invention and their use in anti-ballistic applications. In the process according to the invention the fiber layers contain 0.02 to 25 wt.% of a solvent for the polyolefin. The shaped articles obtained have an improved anti-ballistic quality.
Claims15
Process for the production of a shaped article comprising the compression of one or more fibre layers containing polyolefin fibres, characterized in that the fibre layers contain 0.02 to 25 wt. % of a solvent for the polyolefin (relative to the total weight of the polyolefin fibres and solvent in the fibre layer).
Shaped article containing one or more fibre layers compressed on top of one another, which contain polyolefin fibres and 0.05 to 25 wt. % of a solvent for the polyolefin.
Shaped article containing one or more fibre layers compressed on top of one another, containing highly oriented polyethylene fibres and at most 30 wt. % of a matrix material (relative to the total weight of the fibre layer) the fibres in the fibre layers being unidirectionally oriented and at an angle relative to the fibres in neighbouring fibre layers, which fibres have an intrinsic viscosity of at least 5 dl/g, a modulus of tension of at least 800 g/den, a fineness of less than 5 denier per filament and 0.05 to 5 wt. % of a non-volatile solvent, which shaped article has a specific energy absorption on impact of an AK47 MSC point of at least 115 J/kg/m2.
Dependencies are inferred from the claim text.