Net for aquaculture
AssigneeAvient Protective Materials B.V.
InventorsHans Schneiders, Bart Tacken
Life of this patent
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Abstract
Nets, preferably nets for aquaculture are provided, wherein the net comprises cords joined in a net mesh, wherein each cord comprises one or more yarns, the yarns having a tenacity of at least 0.6 N/tex and wherein the net has a mesh size of at least 8 mm, characterized in that the cords further comprise a polymeric resin, wherein the polymeric resin is a homopolymer or copolymer of ethylene and/or propylene, wherein the polymeric resin has a density as measured according to ISO1183 in the range from 860 to 970 kg/m3, a melting temperature in the range from 40 to 140° C. and a heat of fusion of at least 5 J/g. The invention further relates to a fishing net, a fish farming construction comprising said net, a fish farm, and a method for fish farming.
Claims20
A net comprising cords joined in a net mesh, wherein
- the cords in the net mesh are joined by knots such that the net mesh has a mesh size of at least 8 mm as measured from center to center of 2 adjacent knots of the net mesh, and wherein
- each cord comprises one or more yarns, wherein the yarns comprise fibers formed of ultrahigh molecular weight (UHMWPE) fibers, and wherein the yarns have a tenacity of at least 0.6 N/tex as measured according to ASTM D885M, and wherein
- the cords further comprise a polymeric resin which impregnates the one or more yarns throughout a cross-section thereof such that the polymeric resin is present between substantially all of the fibers of the one or more yarns and in contact with at least 70% of surfaces of the fibers of the one or more yarns, and wherein
- the polymeric resin is a homopolymer or copolymer of ethylene and/or propylene, wherein the polymeric resin has a density as measured according to ISO1183-2004 in the range from 860 to 970 kg/m3, a peak melting temperature measured according to ASTM E794-06 in the range from 40 to 140° C. and a heat of fusion of at least 5 J/g measured according to ASTM E793-85 considering the second heating curve at a heating rate of 10 K/min, on a dry sample.
Dependencies are inferred from the claim text.