[Ke ʻano o nā ʻeke ulana]

ʻO ka hana ʻana o nā ʻāina ʻē he polyethylene (PE), ʻo ka hana home ka nui o ka polypropylene (PP), kahi ʻano o ka resin thermoplastic i hana ʻia e ka ethylene polymerization. ʻO ka ʻoihana, loaʻa pū kekahi copolymers o ka ethylene me ka liʻiliʻi o -olefin. ʻO ka polyethylene odorless, non-toxic, like me ka wax, he haʻahaʻa haʻahaʻa haʻahaʻa haʻahaʻa (ʻo ka haʻahaʻa haʻahaʻa haʻahaʻa hiki ke piʻi i -70 ~ -100 ℃), maikaʻi kemika paʻa, hiki ke kū i ka hapa nui o ka waikawa a me ka alkali erosion (ʻaʻohe oxidation o ka waikawa), ka lumi wela insoluble i nā mea hoʻoheheʻe maʻamau, ka wai liʻiliʻi o ka wai, ka maikaʻi o ka hoʻoheheʻe uila; Akā, paʻakikī ka polyethylene i nā koʻikoʻi o ke kaiapuni (nā hopena kemika a me nā mechanical) a ʻaʻole maikaʻi ka pale ʻana i ka ʻelemakule wela. ʻOkoʻa nā waiwai o ka polyethylene mai kēlā me kēia ʻano, ma muli o ke ʻano molekala a me ka nui. Hiki ke loaʻa nā huahana me nā ʻano like ʻole (0.91 ~ 0.96g/cm3) me ka hoʻohana ʻana i nā ʻano hana like ʻole. Hiki ke hana ʻia ka polyethylene e ke ʻano hoʻoheheʻe thermoplastic maʻamau (e ʻike i ka hoʻoili ʻana i ka plastic). Hoʻohana nui ʻia ia i ka hana ʻana i nā kiʻiʻoniʻoni, ipu, paipu, uea hoʻokahi, uea a me ke kaula, nā mea e pono ai i kēlā me kēia lā, a me nā mea ʻē aʻe, a hiki ke hoʻohana ʻia e like me nā mea insulation kiʻekiʻe-frequency no ka TV, radar, a me nā mea ʻē aʻe. I ka makahiki 1983, he 24.65Mt ka nui o ka hana ana o ka polyethylene, a he 3.16Mt ka nui o ka mea kanu.

Polypropylene (PP)

He resin thermoplastic i hoʻomākaukau ʻia e ka polymerization o propylene. ʻEkolu mau hoʻonohonoho o nā huahana isochronous, unregulated a interchronous, a ʻo nā huahana isochronous nā mea nui o nā huahana ʻoihana. Hoʻokomo pū ka Polypropylene i nā copolymers o propylene a me kahi liʻiliʻi o ka ethylene. ʻO ka maʻamau translucent kala ʻole paʻa, ʻaʻala ʻole ʻona ʻole. Ma muli o ka maʻemaʻe a me ka crystallized kiʻekiʻe o ka hale, no laila ka helu heheʻe a hiki i 167 ℃, ke kūpaʻa wela, hiki ke hoʻohana ʻia nā huahana disinfection ʻo ia kāna mau mea maikaʻi loa. Me ka mānoanoa o 0.90g/cm3, ʻo ia ka ʻilika māmā loa. ʻOi aku ka maikaʻi o ka pale ʻana i ka corrosion, ka ikaika tensile 30MPa, ka ikaika, rigidity a me ka transparency ma mua o ka polyethylene. ʻO ka hemahema ka haʻahaʻa haʻahaʻa haʻahaʻa hopena hopena a me ka maʻalahi o ka ʻelemakule, hiki ke lanakila ma o ka hoʻololi ʻana a me ka hoʻohui ʻana o ka antioxidant.

ʻO ka waihoʻoluʻu o ka ʻeke i ulana ʻia he keʻokeʻo a hina keʻokeʻo paha, ʻaʻohe mea ʻawaʻawa a ʻono ʻole, ʻoi aku ka liʻiliʻi o ka pōʻino i ke kino o ke kanaka, ʻoiai ua hana ʻia ia e nā ʻano plastic plastic, akā ʻoi aku ka ikaika o ka mālama ʻana i ke kaiapuni, a ʻoi aku ka ikaika o ka hana hou ʻana;

Hoʻohana nui ʻia nā ʻeke i ulana ʻia, hoʻohana nui ʻia no ka hoʻopili ʻana a me ka hoʻopili ʻana i nā ʻatikala like ʻole, hoʻohana nui ʻia i ka ʻoihana;

Hana ʻia ka ʻeke i ulana ʻia me ka resin polypropylene ma ke ʻano he kumu kumu nui, i hoʻokuʻu ʻia a hohola ʻia i loko o ka siliki pālahalaha, a laila ulana ʻia a hana ʻeke.

Hoʻokumu ʻia ka ʻeke i ulana ʻia ma luna o ka lole i ulana ʻia, i hana ʻia e ke ʻano ʻōwili.

Hoʻohana ʻia kēia ʻano huahana no ka hoʻopili ʻana i ka pauka a i ʻole nā ​​mea paʻa paʻa granular a me nā ʻatikala maʻalahi. Hoʻokaʻawale ʻia ka ʻeke i ulana ʻia i ʻelua ʻeke i loko o hoʻokahi ʻeke a ʻekolu ʻeke i loko o hoʻokahi ʻeke e like me ke ʻano mea nui.

E like me ke ʻano o ka humuhumu ʻana, hiki ke hoʻokaʻawale ʻia i ka ʻeke ʻeke lalo, ʻeke ʻeke lalo, hoʻokomo ʻeke a me ka ʻeke humuhumu paʻa.

E like me ka laulā kūpono o ka ʻeke, hiki ke māhele ʻia i 350, 450, 500, 550, 600, 650 a me 700mm. E ʻae ʻia nā ʻōlelo kikoʻī e nā ʻaoʻao ʻelua.