Nau'in Tsarin Fitar Filastik

An rarraba tsarin extrusion na filastik zuwa nau'i daban-daban guda bakwai dangane da takamaiman aikace-aikacen.

(a) Sheet/Fim Fim

A cikin wannan tsari na extrusion, narkakkar kayan filastik ana fitar da su ta hanyar mutuƙar lebur.Ana amfani da nadi mai sanyaya don tantance kaurin takarda/fim da yanayin yanayin sa.Za a iya samun kauri daga takarda a cikin kewayon 0.2 zuwa 15 mm.Za a iya yin takarda na bakin ciki ko fim na kayan filastik.Gabaɗaya, ana amfani da filastik polystyrene azaman albarkatun ƙasa a cikin aikin fitar da takarda.

(b) Fitar da Fina-Finai

A cikin tsarin fim ɗin da aka busa, mutuƙar kamar silinda ce ta tsaye tare da bayanan madauwari.Narkar da robobin ana jan shi zuwa sama daga mutun ta hanyar nadi biyu na nip.Ana amfani da iskar da aka danne don tada bututu.A kusa da mutuwa, an saka zoben iska.Manufar zoben iska shine sanyaya fim ɗin yayin da yake tafiya sama.A cikin tsakiyar mutuwa, akwai tashar iska daga abin da za a iya tilasta iska mai matsa lamba a tsakiyar bayanan madauwari, da kuma haifar da kumfa.Za a iya ƙara sashin madauwari mai da'ira da aka fitar sau 2-3 na diamita na mutuwa.An rushe kumfa tare da taimakon farantin da ke rushewa.Nip rolls yana mirgine kumfa zuwa fim mai ninki biyu wanda ake kira layflat.Za a iya sarrafa kauri na bangon fim ɗin ta hanyar canza saurin rollers na nip.Za a iya yayyafa layflat a cikin nau'i na nadi ko a yanka a cikin siffofin da ake so.Gefen ƙasa na layflat an rufe shi tare da aikace-aikacen zafi, kuma a yanke gaba da gaba don samar da buɗewa;don haka ana iya amfani da shi don yin jakar filastik.Diamita na mutuwa zai iya bambanta daga 1 zuwa 300 centimeters.Gabaɗaya, ana amfani da filastik polyurethane a cikin wannan tsari.

(c) Fiye da Fitar Jaket

Wannan kuma ana kiransa tsarin suturar waya.A cikin wannan tsari, ana jan waya mara amfani ta tsakiyar mutuwa.Akwai nau'ikan kayan aikin extrusion iri biyu da ake amfani da su don shafa kan waya watau matsa lamba ko kayan aikin jaket.Idan ana buƙatar kusanci ko mannewa tsakanin waya da shafi, ana amfani da kayan aiki na matsa lamba.Idan ba a so adhesion, ana amfani da kayan aikin jaket.Don kayan aiki na matsa lamba, wayar tana ja da baya a cikin mutu, inda ta haɗu da narkakkar filastik a matsi mafi girma.Don kayan aikin jaket, waya za ta faɗaɗa kuma narkakken filastik zai yi murfin kan waya bayan ya mutu.Wayar da ba ta da tushe ana ciyar da ita ta cikin mutuwa kuma ba ta yin hulɗa kai tsaye da narkakkar robobin har sai ta bar mutuwar.Babban bambanci tsakanin jaketing da kayan aiki na matsa lamba shine matsayi na waya game da mutu.

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(d) Fitar da Tubu

A cikin wannan tsari, ana fitar da robobin da aka narkar da shi ta hanyar mutuwa kuma ana samar da ɓangarorin giciye ta hanyar sanya maɗaura a cikin mutun.Hakanan ana iya yin Tube tare da ramuka da yawa don takamaiman aikace-aikace, ta sanya adadin mandrels a tsakiyar mutuwa.

(e) Haɗin kai

Coextrusion shine tsarin extrusion na yin yadudduka da yawa na abu lokaci guda.Ana amfani da shi don amfani da ɗaya ko fiye da yadudduka a saman kayan tushe don samun takamaiman kaddarorin kamar ultraviolet sha, riko, matte surface, da makamashi tunani, yayin da tushe abu ne mafi dace da sauran aikace-aikace, misali tasiri juriya da kuma tsarin yi.Ana iya amfani da shi akan kowane tsari kamar fim mai busa, sama da jaket, tubing, fidda takarda/fim.A cikin wannan tsari, ana amfani da na'urori biyu ko fiye don isar da kayan da aka haɗa su zuwa mutuwa guda ɗaya wanda ke fitar da kayan cikin siffar da ake so.Ana sarrafa kauri mai kauri ta hanyar gudu da girman kowane extruders masu isar da kayan.

(f) Tufafin Fitarwa

Ana amfani da murfin extrusion don yin ƙarin Layer akan takarda, foil ko fim ɗin data kasance.Alal misali, don inganta ruwa resistant na takarda polyethylene shafi ake amfani.Aikace-aikacen murfin extrusion sune marufi na ruwa, takarda hoto, ambulaf, buhunan buhu don marufi da takin mai magani.Gabaɗaya, ana amfani da polyethylene da polypropylene.