High performance fibres composite sheet
AssigneeAvient Protective Materials B.V.
InventorsRoelof Marissen, Johannes Wilms, Leonard Nielaba
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Abstract
The invention relates to a method for manufacturing a composite sheet comprising high performance polyethylene fibres and a polymeric resin comprising the steps of assembling HPPE fibres to a sheet, applying an aqueous suspension of a polymeric resin to the HPPE fibres, partially drying the aqueous suspension, optionally applying a temperature and/or a pressure treatment to the composite sheet wherein the polymeric resin is a homopolymer or copolymer of ethylene and/or propylene. The invention further relates to composite sheets obtainable by said method and articles comprising the composite sheet such as helmets, radomes or a tarpaulins.
Claims17
A composite sheet comprising assembled high performance polyethylene (HPPE) fibres and a polymeric resin, wherein
- the HPPE fibers have a tenacity of at least 1.0 N/tex, and wherein
- the polymeric resin comprises a functionalized polymer which is a copolymer of ethylene and/or propylene with an ethylenically unsaturated monomer comprising a carboxylic acid group or derivative thereof, and wherein
- the polymeric resin has a density as measured according to ISO1183 in the range from 860 to 930 kg/m3, a melting temperature in the range from 40 to 140° C. and a heat of fusion of at least 5 J/g.
A composite sheet comprising:
- high performance polyethylene (HPPE) fibres having a tenacity of at least 1.0 N/tex;
- and
- a dried residue of an aqueous suspension of a polymeric resin which comprises a functionalized copolymer of ethylene and/or propylene with an ethylenically unsaturated monomer comprising a carboxylic acid group or derivative thereof, wherein
- the polymeric resin has a density as measured according to ISO1183 in the range from 860 to 930 kg/m3, a melting temperature in the range from 40 to 140° C. and a heat of fusion of at least 5 J/g.
Dependencies are inferred from the claim text.