nūhou

ʻupena lawaiʻa,upena no ka lawaia ana.Mea hana mea paahana kūikawā lawaiʻa.ʻOi aku ma mua o 99% i hana ʻia mai nā fiber synthetic.Aia ka nui o ka nylon 6 a i ʻole ka monofilament nylon i hoʻololi ʻia, multifilament a i ʻole monofilament lehulehu, a hiki ke hoʻohana ʻia nā fibers e like me polyethylene, polyester, a me polyvinylidene chloride.ʻO nā ʻupena i hoʻohana ʻia i ka hana lawaiʻa ʻo ia nā ʻupena, nā ʻupena puʻupuʻu, nā ʻupena hoʻolei, nā ʻupena paʻa a me nā hīnaʻi.ʻO nā ʻupena a me nā puʻu ʻeke he ʻupena kaumaha i hoʻohana ʻia i nā lawaiʻa kai.ʻO ka nui o ka ʻupena he 2.5 a 5 knm, ʻo ke anawaena o ke kaula ʻupena ma kahi o 2 mm, a ʻo ke kaumaha o ka ʻupena he mau tona a i ʻole mau kakini paha.ʻO ka mea maʻamau, hoʻohana ʻia kekahi mau waʻa huki e huki a alualu i ka hui lawaiʻa ʻokoʻa, a i ʻole hoʻohana ʻia ka waʻa māmā e hoʻowalewale i ka iʻa i loko o ka hui a hoʻopuni iā ​​​​ia.He ʻupena māmā no ka lawaiʻa ʻana ma nā muliwai a me nā loko.ʻO ka nui o ka mesh he 1 a 3 knm, ʻo ke anawaena o ke kaula ʻupena ma kahi o 0.8 mm, a ʻo ke kaumaha o ka ʻupena he mau kilokani.ʻO nā ʻupena paʻa a me nā hīnaʻi he mau ʻupena paʻa no ka moʻomeheu artificial ma nā loko, nā loko a i ʻole nā ​​kahakai.ʻOkoʻa ka nui a me nā kikoʻī e like me ka iʻa e hānai ʻia ana, a mālama ʻia ka iʻa ma kahi wahi wai e pale aku ai.He nui nā kumu o ka ʻupena lawaiʻa.

Me ka hoʻomohala ʻana i ka lawaiʻa, ʻaʻole iʻa wale nā ​​mea lawaiʻa a me nā mea lawaiʻa, akā ʻo nā mea hana lawaiʻa ke holomua pū nei me nā manawa.Hoʻokaʻawale ʻia nā ʻupena lawaiʻa i nā ʻupena gill, nā ʻupena huki (trawl nets), nā ʻupena puʻu, ka hana ʻupena a me ka hoʻomoe ʻupena.

Hoʻokaʻawale ʻia nā ʻupena lawaiʻa maʻamau:huki upena, ʻupena neʻe,ʻupena lāʻau.Pono ʻia e loaʻa ka ʻike kiʻekiʻe (ʻāpana o ka nylon mesh) a me ka ikaika, ka hopena maikaʻi o ka hopena, ka pale ʻana i ka abrasion, ke kūpaʻa mesh dimensional a me ka palupalu, a me ka elongation kūpono i ka wā haki (22% a 25%).Hoʻohana ʻia ia e ka monofilament, multifilament milo wili (me ka ʻupena i hoʻopaʻa ʻia) a i ʻole monofilament warp ulana (raschel, nona ka ʻupena non-knotted), hoʻokahi lapaʻau wela (nodule paʻa), ke kala a me ka mālama wela lua (ka nui mesh paʻa).ʻO nā mea maka no ka ulana ʻana i nā ʻupena lawaiʻa he 15-36 mau kaula o 210-denier nylon, polyester multifilament a me ka ethylene monofilament me ke anawaena o 0.8-1.2 mm.ʻO ke ʻano o ka ulana ʻana, ʻo ia ka wili, ka wili a me ka ulana.
He aha nā hana nui o ka ʻupena lawaiʻa?
1. ʻO ka ʻupena lawaiʻa nā mea hana a ka poʻe lawaiʻa, hiki ke hoʻohana ʻia no ka lawaiʻa ʻana i nā iʻa, nā ʻōpae a me nā pāpaʻi ma lalo o ka wai.
2. Hiki ke hoʻohana ʻia nā ʻupena lawaiʻa ma ke ʻano he mea pale, e like me nā ʻupena pale manō, hiki ke hoʻohana ʻia no ka pale ʻana i nā iʻa nui weliweli e like me ka manō.
3. Hiki i nā ʻupena lawaiʻa ke hana i ka hopena kiʻi kiʻi.