ʻO ka hapa nui o nā thermoplastics hiki ke puhi ʻia i ka hana kiʻiʻoniʻoni me ka hoʻoheheʻe ʻana, ʻo ka hoʻoheheʻe ʻana i ka kiʻiʻoniʻoni plastik e ʻomi i loko o kahi paipu lahilahi, a laila e hahau me ka ea paʻa e puhi i ka plastic bulge, ma hope o ka hoʻomaha ʻana e hoʻopau i ka hoʻolālā ʻana o nā huahana tubular membrane, kēia ʻano hana kiʻiʻoniʻoni ma waena. kiʻi ʻoniʻoni ʻoniʻoni a me nā kiʻi ʻoniʻoni: ʻoi aku ka ikaika ma mua o ke kiʻi ʻoniʻoni, ʻoi aku ka maikaʻi o ka hoʻopaʻa ʻana i ka wela ma mua o ke kiʻi ʻoniʻoni.
Nui nā ʻano kiʻiʻoniʻoni i hana ʻia ma ke ʻano hoʻoheheʻe ʻana, e like mepolyethylene haʻahaʻa haʻahaʻa (LDPE), linear polyethylene (LLDPE), polypropylene (PP), high density polyethylene (HDPE), nylon (PA), ethylene ethylene acetate copolymer (EVA), etc. Eia mākou e hoʻolauna pōkole i ke kaʻina hana hoʻoheheʻe ʻana o nā kiʻiʻoniʻoni LDPE a me LLDPE maʻamau. .
1. Pono e puhi ʻia ka mea maka i koho ʻia i nā ʻāpana polyethylene resin kiʻiʻoniʻoni, i loaʻa ka nui o ka mea hoʻomaʻemaʻe, e hōʻoia i ka wehe ʻana o ke kiʻiʻoniʻoni.
2 resin particle melting index (MI) ʻaʻole hiki ke nui loa, melting index (MI) nui loa, liʻiliʻi loa ka viscosity o ka resin hoʻoheheʻe ʻia, haiki ka pae hana, paʻakikī ka hoʻoponopono ʻana i nā kūlana, maikaʻi ʻole ke kiʻi resin, ʻaʻole maʻalahi ke hana i ke kiʻiʻoniʻoni;Eia kekahi, ʻoi aku ka nui o ka helu heheʻe (MI), ʻoi aku ka liʻiliʻi o ka hāʻawi ʻana i ke kaumaha molecular pili o ka polymer, a ʻilihune ka ikaika o ke kiʻiʻoniʻoni.No laila, pono e koho i ka heheʻe index (MI) liʻiliʻi, a me ka pili molecular kaumaha puʻunaue o ka laula resin maka mea, i mea e hoʻokō i nā koi hana o ke kiʻiʻoniʻoni, akā, e hōʻoiaʻiʻo i nā ʻano hana o ka resin.Hoʻohana pinepine ʻia ke kiʻi ʻoniʻoni polyethylene puhi i ka helu hehee (MI) ma waena o 2 a me 6g/10min polyethylene maka.
ʻO ke kaʻina hana kiʻiʻoniʻoni puʻu e like me kēia:
Hopper hoʻouka mea plasticizing extrusion → puhi traction → ea apo hooluolu → herringlet splint → traction roll traction → corona lapaʻau → kiʻiʻoniʻoni
Ka manawa hoʻouna: ʻAukake-15-2022