Nūhou

No ke kuhikuhi ʻana i kahi wili hoʻokahi pani, e hoʻouna i ʻehā pūʻulu o ka ʻike: nā kikoʻī mīkini a me nā kikoʻī, kahi moʻolelo i hoʻopaʻa ʻia, nā mea i hana ʻia a me nā hana hana, a me nā koi ʻae maopopo. ʻO kahi laʻana i hoʻohana ʻia e kōkua, akā he hōʻike ia o ka hoʻolālā kumu a me ka pōʻino ma hope. Pono ka hale hana e hoʻokaʻawale i waena o nā mea ʻelua ma mua o ka ʻae ʻana i kahi kiʻi.

ʻO ke kaʻina hana wili a me ka barela ka mea maʻamau e pili ana i ka loiloi noi, nā mea a me ke koho ʻana i ka ʻili, ka hoʻomākaukau ʻana, ka mīkini ʻawaʻawa a me ka hoʻopau ʻana, ka mālama wela a i ʻole ka paʻakikī, ka hoʻopau pololei ʻana, ka nānā ʻana a me ka pale ʻana i ka paʻi. ʻAʻole holoʻokoʻa ke kauoha. Pono e hoʻolālā ʻia a puni ka geometry, ka mālama ʻana a me nā ana hope o ka ʻāpana kikoʻī.

Loaʻa i kahi extruder māhoe māhoe like ʻelua mau wili intermeshing anawaena mau i kūkulu ʻia mai nā mea modular. ʻO ka hapa nui e hui pū ana, e holo ana i ka wikiwiki no ka hui ʻana - ʻo ia ka mea e lilo ai lākou i mīkini maʻamau no ka hui ʻana, masterbatch, WPC a me ka pelletizing. ʻAʻole like me ka mīkini conical, hiki ke kūkulu hou ʻia ka ʻaoʻao screw no kēlā me kēia hana hou.

ʻO ka pahu wili hoʻokahi he hoʻokahi wili e kaʻa ana i loko o kahi pahu cylindrical wela, e lawe ana, hoʻoheheʻe a me ka paila ʻana i ka plastic ma o ka make. Hoʻonohonoho nui ʻia ka hana e nā mea ʻekolu: L/D ratio, compression ratio a me ke ʻano screw (maʻamau, pale a hui pū paha). ʻO ia ka koho maikaʻi loa no ka extrusion kiʻekiʻe o nā mea like - puhi kiʻiʻoniʻoni, paipu mai nā pellets, pepa a me ka granulation.

Hoʻohana ka twin screw extruder i ʻelua wili intermeshing i loko o ka pahu māhoe e hānai, hoʻoheheʻe, hoʻohui a paʻi i ka plastik ma o ka make. ʻO nā ʻohana nui ʻelua he conical (nā wili i hoʻopaʻa ʻia, ʻoi aku ka maikaʻi no ka paipu PVC pololei, profile a me ka extrusion papa) a me ka parallel (ka anawaena mau, nā ʻāpana ʻāpana, ʻoi aku ka maikaʻi no ka hoʻohui ʻana, ka granulation a me ka hui pū ʻana kiʻekiʻe).

Loaʻa i ka barela māhoe māhoe ʻelua ʻelua mau wiliwili o ke anawaena mau e holo ʻaoʻao ma kahi ʻaoʻao i loko o ka pahu māhoe lua. ʻAʻole e like me ka pahu conical, noho nā ʻūlū i ka nui like i ka hopena a i ka hopena, a ʻo ka barela e hana mau ʻia mai nā ʻāpana. Hoʻopili ʻia nā wili like like me ka hui pū ʻana, granulation a me masterbatch; ʻO nā wili like like me ka PVC a me ka hana piha piha.