Abstract:Comparisons between tensile mechanical properties of high strength polyethylene braided netting twine (HSPE braided netting twine) and common polyethylene braided netting twine (PE braided netting twine) for fishing have been made by applying the SC 5005 fisheries trade standard and SC 110 fisheries trade standard.The results revealed that under the same condition(the pitch of twist of twine was 27 mm, the structure of strand was 3×16,the twine core was a parallel thread which was made from 7 monofilaments without twining), the HSPE braided netting twine（whose specification was HSPE－37tex×3×16＋7）was 10.0% and 9.1% higher than common polyethylene braided netting twine (PE braided netting twine PE－37tex×3×16＋7) in breaking strength and overhand knot strength, respectively, while in percentage of breaking elongation, the former was 11.3% smaller than the latter Under the same condition(the pitch of twist of twine was 30 mm, the structure of strand was 4×16,the twine core was a parallel thread which was made from 18 monofilaments without twining), the HSPE braided netting twine（HSPE－37tex×4×16＋18）was 8.1% and 6.1% higher than common polyethylene braided netting twine (PE braided netting twine, PE－37tex×4×16＋18）) in breaking strength and overhand knot strength, respectively, while in percentage of breaking elongation, the former was 13.3% smaller than the latter. Under the prerequisite of strength of braided netting twine, the HSPE braided netting twine, if used in fishing gear or fish cage, is more feasible than the same structure PE braided netting twine.
