What is a parallel twin screw extruder?

It is an extruder with two constant-diameter intermeshing screws built from modular elements on splined shafts. Most are co-rotating and are used for compounding, masterbatch, WPC and pelletizing, because the screw profile can be rebuilt for each formulation.

What is a co-rotating twin screw extruder used for?

Compounding and pelletizing above all — masterbatch, filled and glass-fibre reinforced compounds, WPC and recycling. The self-wiping, high-shear action gives strong dispersive and distributive mixing plus effective devolatilisation.

Co-rotating or counter-rotating — which is better?

Neither universally. Co-rotating suits compounding and mixing at high screw speed. Counter-rotating gives gentler, positive conveying and suits PVC and heat-sensitive, highly filled work. Match the machine to the job, not the reverse.

Parallel or conical twin screw extruder?

Choose parallel when the output is pellets or a compound and you need reconfigurable mixing. Choose conical when the extrudate itself is your product — PVC pipe, profile, board or sheet — where strong feeding and gentle compression matter more.

What are kneading blocks and why do they matter?

Kneading blocks are staggered disc elements that melt and mix the compound. The stagger angle sets the effect: forward angles give distributive mixing, neutral 90 degree gives intensive dispersion, and reverse elements build a melt seal for vacuum venting.

How is a parallel twin screw extruder sized?

By screw diameter, screw speed, available torque and L/D ratio — but the formulation usually sets the real limit. Highly filled or hard-to-disperse recipes run slower than simple masterbatch on the same machine, and the pelletizer must keep up.

What is a side feeder for?

A side feeder introduces glass fibre or high filler loads downstream of the melting section. Adding fibre after the polymer has melted protects fibre length and avoids the excessive shear that main-feed addition would cause.

How long do parallel screws and barrels last?

It depends on abrasion. Glass fibre and mineral filler wear elements fastest. A bimetallic surface with a 2.0-3.0 mm alloy layer at up to 62 HRC extends life considerably, and the modular design lets you replace only the worn elements rather than the whole screw.

ʻO Parallel Twin Screw Extruder: Pehea ka hana ʻana o ka hui pū ʻana

2026-08-14 0 Waiho mai ia'u i memo

Na kaHui Hana Hana Nanhaiya— Extrusion Machinery, Zhoushan · Nānā ʻia no ka pololei o ka hale hana · ~9 min heluhelu

Pane wikiwiki

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.

Inā hoʻololi kāu hana i nā meaʻai i pellets - masterbatch, piha pūhui, WPC, ʻenekinia plastics - ʻo ka mea hoʻoheheʻe māhoe māhoe like ʻole ʻo ia ka mīkini āu e pono ai. ʻAʻole mana kona hiʻohiʻona akāhiki ke hoʻonohonoho: no ka mea, ua kūkulu ʻia ka wili a me ka barela mai nā modules, hiki ke kūkulu hou ʻia hoʻokahi mīkini e kūpono i ka meaʻai ma hope o ka ʻai. Mālama kēia alakaʻi i ke ʻano o ka hana ʻana, no ke aha e ʻoi ai ka hui ʻana o ka hui pū ʻana, pehea i hoʻolālā maoli ʻia ai ka hoʻonohonoho ʻana, a pehea e hoʻonui ai i ka mīkini i kāu huahana.

Parallel twin screw extruder pelletizing line by Nanhaiya

Pehea ka hana ʻana o kahi extruder māhoe māhoe like

ʻElua wili like ʻole ke anawaena e holo ʻaoʻao ma kahi kiʻi ʻewalu, e hui pū ana me ko lākou lōʻihi holoʻokoʻa. Hoʻohana ʻia nā mea i loko - maʻamau e ka gravimetric a volumetric feeder ma mua o ka wai hopper - a laila lawe ʻia, hoʻoheheʻe ʻia, hui ʻia, hoʻoheheʻe ʻia a pā i ka make. Ma muli o ka hui ʻana o nā wili, hoʻololi maikaʻi nā mea mai kekahi a i kekahi ma mua o ka huki ʻia ʻana ma ka paia, kahi e hāʻawi ai i ka mīkini i kāna hana paʻa a me ka holoi ʻana iā ia iho.

ʻO ke kaʻina ma ka pahu:

ʻAi ana i mika- ka nui o nā mea hānai resin, mea hoʻopiha a me nā mea hoʻohui i nā ratio pololei i loko o ka ʻāpana hānai. Hoʻokomo nā mea hānai ʻaoʻao i ka fiber aniani a i ʻole nā ukana hoʻopihapiha kiʻekiʻe ma lalo o ke kahawai no laila ʻaʻole lākou e ʻohi ʻia.
Heheʻe- hoʻololi nā poloka kneading i ka ikehu mechanical i ka wela, e hoʻoheheʻe koke i ka polymer ma kahi lōʻihi pōkole.
Huihui- hoʻolaha nā mea hoʻolaha i nā mea hoʻohui like; nā mea hoʻopuehu e wāwahi i nā agglomerates. ʻO kēia kahi e lanakila ai a nalowale paha ka maikaʻi hui.
Devolatilization- ʻO nā makani lewa a me nā puka makani e huki i ka makū, ka monomer a me nā mea hoʻoheheʻe.
Ka ana ana a me ka pelletizing- ʻo ka ʻāpana hoʻoili hope e kūkulu i ke kaomi ma o ka make, a laila ʻoki ʻia ka mea hoʻoheheʻe i loko o nā granule.

No ke aha e hoʻohana ai ka hui ʻana i nā mīkini hui pū

Hiki ke ho'ololi a ho'ololi paha i kahi extruder māhoe māhoe like, a 'o ke koho ke 'ano o ka mīkini.

Kumukumu	ʻO ka hui like ʻana	ʻĀlike hoʻololi kūʻē
ʻO ka hoʻololi ʻana i ka pōkā	Huli nā wili ʻelua i ka ʻaoʻao like	Huli nā screws i nā ʻaoʻao ʻē aʻe
ʻAno	ʻO ka holoi ʻana iā ʻoe iho, ka hui ʻana i ka shear kiʻekiʻe	Me he kalena, lawe maikaʻi
Ka māmā holo	Kiʻekiʻe — hoʻokomo ikehu hoʻoheheʻe	Haʻahaʻa - ʻoi aku ka mālie ma ka heheʻe
Ka ikaika	ʻO ka hui ʻana o ka dispersive & distributive, devolatilization	Paʻa paʻa, ʻoki haʻahaʻa
Hoʻohana maʻamau	Hoʻohui, masterbatch, WPC, aniani-fiber, hana hou	ʻO ka paipu PVC / profile, ka wela a me ka PVC piha piha

I ka hoʻomaʻamaʻa ʻana, ʻo ka extruder māhoe māhoe hui pū ka manaʻo o ka hapa nui o ka poʻe ma ke ʻano he "compounding extruder": ʻo ka holoi ʻana iā ia iho e pale i nā kiko make a me nā mea e kau ai, a heheʻe a hoʻopuehu koke ka mea hoʻokomo ikehu kiʻekiʻe. E ola ana nā mīkini like ʻole e hoʻololi i kahi e noho haʻahaʻa ai ka ʻāhi - ʻo PVC ka nui. No ka extrusion PVC pololei, aconical twin screw extruderʻo ia ka pane ʻoi aku ka maikaʻi.

ʻO ka hoʻonohonoho screw: ka kikoʻī maoli

Ma ka mīkini like, ʻaʻole ʻāpana hoʻokahi ka wili - he pūʻulu o nā mea i hoʻopaʻa ʻia ma luna o kahi lāʻau splined. ʻO kamāhoe māhoe like me ka pahuNo laila, ua wehewehe ʻia e kona ʻano ʻano, ʻaʻole ke anawaena wale nō. ʻO nā poloka kūkulu:

Ka lawe ʻana i nā mea- nā lele lele i mua e halihali i nā mea; ke kani lōʻihi no ka hānai ʻana, ka pitch pōkole no ke kūkulu ʻana i ke kaomi.
Kneading poloka— nā diski hoʻoheheʻe ʻia e heheʻe a hui pū. Hoʻonohonoho ka angle stagger i ke ʻano: 30° a me 45° i mua no ka hui pū ʻana, 90° kūʻokoʻa no ka hoʻopuehu ikaika, hoʻohuli no ka shear kiʻekiʻe a me ke sila hoʻoheheʻe piha.
Nā mea hoʻohuli (lima hema).- E hana i kahi sila hehee i hiki ke hana ka puka makani, a hoonui i ka manawa noho ma ka aina.
Huihui mea- nā hoʻolālā niho a i ʻole nā slotted no ka hui ʻana mālie me ka ʻoki ʻole.
Nā ʻāpana barela- nā ʻāpana hānai, pani ʻia, ʻaoʻao-feed, atmospheric-vent a me vacuum-vent i hoʻopaʻa ʻia i ke kauoha e pono ai ka meaʻai.

Nota ʻoihana maʻamau:Hoʻohana mau ʻia nā mīkini hoʻohuihui hui pū ʻana ma L/D ma kahi o 32:1 a 48:1, me ka lōʻihi o ka lōʻihi i hoʻohana ʻia inā pono kahi meaʻai e hānai ʻaoʻao me nā pae hui ʻana a me ka hoʻokuʻu ʻana. E hōʻoia i ka L/D a me ke kaʻina mea e kūʻē i kāu hoʻonohonoho kikoʻī.

Segmented parallel twin screw elements for a compounding extruder

ʻO ka extruder kahi hapa wale nō o ka laina

ʻAʻole hana kaʻawale kahi extruder māhoe māhoe like. Hoʻokomo pinepine ʻia kahi laina hui piha:

Nā mea hānai- nā ʻāpana pohō-ma-kaumaha gravimetric no ka hoʻopaʻa ʻana i ka meaʻai pololei.
Mea hānai ʻaoʻao- hoʻolauna i ka fiber aniani a i ʻole ka mea hoʻopihapiha kaumaha ma lalo o ke kahawai e pale i ka lōʻihi o ka fiber.
Pūnaehana hoʻoheheʻe- hoʻoneʻe i ka makū a me nā mea hoʻoheheʻe mai ka heheʻe.
kānana hehee- mea hoʻololi pale no ka hopu ʻana i ka haumia, mea nui i ka meaʻai hana hou.
Mea hoolele- strand, water-ring or die-face (underwater) cutting, i koho ʻia e ka mea.
Hoʻoluʻu & maloʻo- ʻauʻau wai a i ʻole ka hoʻoluʻu ea me kahi mea maloʻo ma mua o ka hoʻopaʻa ʻana.

Hāʻawi ʻo Nanhaiya i ka extruder wale nō a i ʻole ka pihalaina pelletizing māhoe māhoe māhoe, a ʻo kekahinā mīkini extruder ʻē aʻeno ka wili hoʻokahi a me ka hoʻolālā conical.

Ka nui a me ka puka

Ua kapa ʻia nā mīkini like ʻole e ke anawaena wili - he 65 mm mīkini ʻelua 65 mm wili. Piʻi ka puka me ke anawaena, ka wikiwiki a me ka torque, akā hoʻonohonoho ka meaʻai i ke kaupaku maoli: kahi pūhui piha piha e pono ai ka hoʻopuehu ikaika e holo mālie ma mua o kahi masterbatch kala maʻalahi ma ka mīkini hoʻokahi.

ʻO ka mea e hoʻonohonoho ai i ka huahana	No ke aha ia mea
Anawaena wili	ʻO ka mana kumu o ka mīkini - pono e hoʻohālikelike i kāu pūʻulu throughput
Ka māmā holo (rpm)	Hiki i ka māmā kiʻekiʻe ke hoʻokiʻekiʻe i ka hoʻokuʻu ʻana akā ʻāwili pū a hoʻoheheʻe ʻia ka mahana
ʻO ka mānoanoa tork	Loaʻa i ka torque no kēlā me kēia ʻāpana leo - ka palena o nā meaʻai piha loa
Lakiō L/D	ʻO ka lōʻihi lōʻihi e hiki ai i ka hānai ʻaoʻao, ʻoi aku ka nui o ka hui ʻana a me ka maikaʻi o ka hoʻokuʻu ʻana
ʻO ka hoʻomākaukau ʻana	Hoʻopili pinepine ka pae hoʻopiha a me ka paʻakikī ma mua o ka hana ʻana o ka mīkini
Hiki i lalo	Pono e hoʻomau ka pelletizer a me ka hoʻoluʻu a i ʻole e lilo lākou i bottleneck

ʻO ke ala kūpono: e haʻi mai iā mākou i ka hui, ka pae hoʻopiha a me ka kg / h āu e pono ai, a e hoʻonui mākou i ka mīkini a hoʻolālā i ke kaʻina mea a puni ia - ma mua o ke kūʻai aku ʻana iā ʻoe i ke anawaena a me ka manaʻo e kūpono ke ʻano.

He aha ka hana ʻana o nā extruder māhoe māhoe like

Masterbatch- ka waihoʻoluʻu, ka mea hoʻopiha a me nā mea hoʻohui.
Huipuia i piha- CaCO₃, talc a me ka mineral-piha PP a me PE.
ʻO nā plastics ʻenekinia i hoʻoikaika ʻia i ka fiber aniani— PA, PBT a me PP me ka pulupulu hanai aoao.
WPC pellets- nā mea hoʻohui lāʻau no ka decking a me nā paneli.
PS huāhuā— ike i ko makouPS huāhuʻu māhoe māhoe like.
Aluminum-plastic composite panel— ike i kaaluminika-palapala māhoe māhoe.
Hana hou- ka hana hou ʻana a me ka hoʻomaikaʻi ʻana i nā mea ma hope o ka ʻoihana.

ʻO ka mīkini like ʻole a i ʻole ka mīkini conical?

Ninau	Extruder māhoe māhoe like	Extruder māhoe māhoe conical
He aha ka hopena?	Pellets a hui pū ʻia	He kiʻi paʻa, paipu a papa paha
ʻūlū	ʻO ke anawaena mau, nā mea modular	ʻAiʻoniʻoni, paʻa geometry i kēlā me kēia nui
Hoʻololi ka meaʻai	Hoʻokumu hou i ka ʻaoʻao wili	Hoʻololi i nā mea hana i lalo
Hanai	Mea hānai mika, hānai pinepine ʻaoʻao	Mea hānai ikaika (crammer) no ka pauka PVC
Shear	Kiʻekiʻe - ʻo ia ke kumu	Haʻahaʻa a mālie no ka PVC wela

ʻAʻole maopopo i ka hoʻolālā e kūpono? E hoʻomaka mai kā mākou ākeamāhoe screw extruder alakaʻi, e hoohalike ana i na ohana elua ma ka aoao.

ʻO ka wili a me ka pahu: ka ʻāpana e komo ai

He paʻakikī ka hoʻohui ʻana i ke kila. ʻO ka pulupulu aniani, ka mea hoʻopiha mineral a me nā hoʻouka carbonate kiʻekiʻe e ʻānai i nā ʻōlelo aʻoaʻo lele a me ka lua, a nalowale ke kaʻina mea ʻeleʻele i ka hui ʻana ma mua o ka pau ʻana o ka holo ʻana o ka mīkini. ʻO ia ke kumu o kabarela māhoe māhoe likea pono e kuhikuhi ʻia kona mau mea no ka abrasion i hana maoli ʻia e kāu meaʻai.

Hana ʻo Nanhaiya i nā wili like a me nā barela mai 38CrMoAlA nitrided steel, W6Mo5Cr4V2 a i ʻole HIP pauka kila, i paʻa i ka hoʻomanawanui o ±0.01 mm me ka pololei o 0.015 mm/m. No nā pūhui abrasive mākou e kāpīpī i kahi tungsten-hoʻohui paʻa paʻa i hiki62 HRCi loko o ka lua - e kū'ē i kahi 58 HRC maʻamau - me kahi papa huila 2.0–3.0 mm. Kōkua pū ka hoʻolālā modular i ka pāʻoihana: hoʻololi wale ʻoe i nā mea i kahiko ʻia, ʻaʻole ka wili holoʻokoʻa. E ʻike i kā mākou hoʻohālikelike abimetallic vs nitrided screw barrel, a me kā mākouʻāpana ʻāpanalaula.

Nīnau pinepine

He aha ka mea extruder māhoe māhoe like?

He extruder ia me ʻelua mau wili intermeshing anawaena mau i kūkulu ʻia mai nā mea modular ma nā kumu splined. ʻO ka hapa nui o ka hui ʻana a hoʻohana ʻia no ka hoʻohui ʻana, masterbatch, WPC a me ka pelletizing, no ka mea hiki ke kūkulu hou ʻia ka ʻaoʻao screw no kēlā me kēia hana.

He aha ka hoʻohana ʻana i kahi extruder māhoe māhoe hui pū?

ʻO ka hoʻohui ʻana a me ka pelletizing ma luna o nā mea āpau - masterbatch, hoʻopiha a me nā pūhui i hoʻoikaika ʻia i ke aniani-fiber, WPC a me ka hana hou. Hāʻawi ka hoʻomaʻemaʻe ʻana iā ia iho, ka hana hoʻoheheʻe kiʻekiʻe e hāʻawi i ka dispersive ikaika a me ka hui pū ʻana me ka devolatilization maikaʻi.

ʻO ka huli ʻana a i ʻole ka hoʻohuli ʻana - ʻo wai ka mea maikaʻi?

ʻAʻole ma ke ao holoʻokoʻa. ʻO nā lole hoʻololi hui i ka hui ʻana a me ka hui ʻana me ka māmā holo kiʻekiʻe. Hāʻawi ka counter-rotating i ka haʻahaʻa haʻahaʻa, maikaʻi a kūpono i ka PVC a me ka wela, ka hana piha piha. E hoʻohālikelike i ka mīkini i ka hana, ʻaʻole i ka hope.

Extruder māhoe māhoe like a conical paha?

E koho i ka like inā he pellets ka puka a i ʻole ka pūhui a pono ʻoe e hui hou. E koho i ka conical inā ʻo ka extrudate ponoʻī kāu huahana - paipu PVC, profile, papa a i ʻole pepa - kahi i ʻoi aku ka nui o ka hānai ikaika a me ka hoʻoemi mālie.

He aha nā poloka kneading a no ke aha lākou e koʻikoʻi ai?

ʻO nā poloka kneading he mea hoʻoheheʻe ʻia e hoʻoheheʻe a hoʻohui i ka hui. Hoʻonohonoho ka angle stagger i ka hopena: hāʻawi nā kihi i mua i ka hui pū ʻana, hāʻawi ʻo 90 ° kūʻokoʻa i ka hoʻopuehu ikaika, a me nā mea hoʻohuli e kūkulu i kahi sila hoʻoheheʻe no ka hoʻokuʻu ʻana.

Pehea ka nui o kahi extruder māhoe māhoe like?

Ma ke anawaena wili, ka wikiwiki o ka wili, ka torque i loaʻa a me ka ratio L/D - akā hoʻonohonoho maʻamau ka hoʻonohonoho ʻana i ka palena maoli. ʻOi aku ka lohi o nā mea hoʻomaʻamaʻa piha piha a paʻakikī paha ma mua o ka masterbatch maʻalahi ma ka mīkini hoʻokahi, a pono e hoʻomau ka pelletizer.

He aha ka mea hānai ʻaoʻao?

Hoʻokomo ka mea hānai ʻaoʻao i ka fiber aniani a i ʻole nā ukana hoʻopihapiha kiʻekiʻe ma lalo o ka ʻāpana hoʻoheheʻe. ʻO ka hoʻohui ʻana i ka fiber ma hope o ka hoʻoheheʻe ʻana o ka polymer e pale i ka lōʻihi o ka fiber a pale aku i ka ʻoki nui ʻana o ka hoʻohui ʻana i ka hānai nui.

Pehea ka lōʻihi o ka lōʻihi o nā wili like a me nā barela?

Pili ia i ka abrasion. ʻO ka fiber aniani a me ka mea hoʻopiha mineral e hoʻohana wikiwiki loa. ʻO ka ʻili bimetallic me kahi papa huila 2.0–3.0 mm a hiki i ka 62 HRC e hoʻolōʻihi i ke ola, a hiki i ka hoʻolālā modular ke hoʻololi iā ʻoe i nā mea ʻeleʻele wale nō ma mua o ka wili holoʻokoʻa.

Nā huahana pili mai kā mākou hale hana

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ʻO ka māhoe māhoe like ʻole PS

Aluminum-Plastic Plate Parallel Twin Screw

Aluminum-Pila māhoe māhoe māhoe

Rubber a me ka palakia māhoe māhoe

Laina Pelletizing Screw Single

E kiʻi i kahi extruder māhoe māhoe like i kūkulu ʻia a puni kāu meaʻai

E haʻi mai iā mākou i kāu pūhui, pae hoʻopiha a me ka kg / h i hoʻopaʻa ʻia - e nui kā mākou poʻe ʻenekinia i ka mīkini a hoʻolālā i ke kaʻina mea hoʻokalakupua e kūlike, a laila e haʻi i ka extruder wale nō a i ʻole ka laina pelletizing piha.

E kiʻi i kahi ʻōlelo i loko o 12 hola →

Nanhaiya (Zhoushan) Mīkini Palaki · 500+ mau mea kūʻai mai honua ·kaulike & conicalʻōnaehana māhoe māhoe,nā mīkini extruder & ʻāpana ʻāpana