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US 8,316,672 B2Granted
Net and process for producing the net
AssigneeKaratzis S.A.
InventorAntonios M. Karatzis
Life of this patent
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Abstract
A net is made from a multi-layer film which is used to produce at least two layers of synthetic yarns that are unified by application of a thermal process.
Claims23
A net made from a net material of at least two layers of multi-layered thermoplastic synthetic knitted yarns, said knitted yarns having wefts and warps which meet at joints, said knitted yarns being homogenized by application of a thermal process to initially melt the yarns at the joints for creating a compact, flexible net;
- the multi-layered yarns comprising at least three layers including an inner layer comprising high-density polyethylene and two external layers comprising low-density polyethylene.
A method for producing a net, said method comprising:
- producing a multi-layer film, the film including thermoplastic material, with a multi-extrusion head, the multi-layered film comprising at least three layers including an inner layer comprising high-density polyethylene and two external layers comprising low-density polyethylene;
- cutting the multi-layer film into thin strips to produce multi-layer fibers or multi-layer yarns;
- knitting the yarns into a preliminary net with a knitting machine, the preliminary net having the external layers of yarns;
- thermally treating the preliminary net to temporarily liquefy the external layers of yarns;
- and
- compressing the thermally treated preliminary net to homogenize or unify the yarns to produce a net.
3 more elements
Dependencies are inferred from the claim text.