Tsarin Samar da Fim na BOPET: Bayani

Fim ɗin BOPET, kamar yadda aka sani da polyethylene terephthalate mai daidaitacce, fim ɗin polyester ne da aka yi ta hanyar shimfiɗa polyethylene terephthalate (PET) a cikin manyan kwatancensa guda biyu don yin fim ɗin injiniyoyi iri-iri.

Kamfanin ICI na Burtaniya ne ya haɓaka shi a cikin 1950s.

Yana da fa'idodi da yawa, ƙarfin ƙarfi mai ƙarfi, sinadarai da kwanciyar hankali, bayyananniyar gaskiya, nuna haske, kaddarorin shingen gas da ƙamshi, da rufin lantarki.

Bayan shekaru na haɓakawa, samfurin ya samo asali daga ainihin fim ɗin insulating guda ɗaya zuwa fim ɗin capacitor na yanzu, fim ɗin marufi, fim ɗin insulating mai ɗaukar hoto, da sauransu.

Its kauri iya zama daga 4.5um zuwa 350 μm.

Har ila yau, tsarin samar da shi ya bunƙasa daga sauƙi na kettle batch samarwa zuwa shimfidawa da yawa da mikewa biyu lokaci guda.

Samfurin sa kuma ya samo asali daga fim ɗin lebur zuwa fim ɗin da aka haɗa tare da multilayer, fim mai ƙarfi, da fim mai rufi.

Fim ɗin polyester ya zama ɗaya daga cikin nau'ikan fina-finai masu saurin girma a kasuwa.

Dehui FIlm yana ɗaya daga cikin masu samar da fina-finai na bopet a China. A halin yanzu, galibi muna samar da su ta hanyar shimfidawa ta hanyoyi biyu. Tare da haɓaka ƙarar aikace-aikacen sa, ingancin abubuwan da ake buƙata na fina-finai na polyester suna karuwa da girma. Tilasta mu don inganta inganci da haɓaka fitarwa.

BOPET tsarin samar da fim

Yanzu, bari mu gabatar da tsarin samar da fim na bopet. Babban tsari shine kamar haka:

PET guduro bushewa → extrusion simintin → a tsaye mikewa na kauri zanen gado → transverse mikewa → winding → slitting da packing → zurfin aiki.

Takardun simintin gyare-gyare na PET

Bayan narke-extruded da robobi da busasshen guduro PET, sa'an nan kuma gauraye da m da lafiya tacewa da kuma a tsaye mahautsini, Ana kai shi zuwa kan inji ta wurin metering famfo. Sa'an nan kuma sanyaya da quenching abin nadi zuwa cikin kauri yanka don amfani.

Extrusion na biaxally mikewa

PET mai kauri fim Biaxial (direction) mikewa shine don shimfiɗa fim ko takardar da aka fitar daga extruder a wani zazzabi. A cikin madaidaiciyar madaidaiciya da madaidaiciyar kwatance don yin sarkar kwayoyin halitta.

Fuskar lu'ulu'u da za a ƙayyade tana daidaitacce, sannan ana gudanar da jiyya na saitin zafi a cikin yanayin shimfidawa.

Fim ɗin da aka shimfiɗa biaxally, saboda daidaitawar sassan kwayoyin halitta, yana inganta crystallinity.

Don haka yana iya haɓaka ƙarfin ƙarfin ƙarfi sosai, modul na roba mai ƙarfi, ƙarfin tasiri, ƙarfin hawaye, haɓaka juriya na sanyi, bayyana gaskiya, iska, rufin lantarki, da sheki.

Yawancin fim ɗin lebur suna ɗaukar tsarin shimfida biaxial iri-iri na jere.