PET Sheet Production Process

Lintho tse tala tsa PET sheet #pet sheet extrusion

Letlapa la PET, joalo ka lipolasetiki tse ling, ts'ebetso e amana haufi-ufi le boima ba limolek'hule, 'me sebopeho sa viscosity se khetholla boima ba limolek'hule. Ha ho na le viscosity e kholo, ho na le thepa e ntle ea 'mele le ea lik'hemik'hale. empa metsi a futsanehileng, a fella ka bothata ba ho bopa. Ka tlase viscosity ea kahare ke, ho mpefala ha thepa ea physicochemical le matla a tšusumetso a joalo. Ka hona, 0.8dl/ G-0.9dL /g e lokela ho khethoa bakeng sa sebopeho sa viscosity sa filimi e hlakileng ea PET.

Ts'ebetso ea tlhahiso ea PET #extrusora de garrafa pet

Thepa e ka sehloohong ea tlhahiso ea letlapa le pepeneneng la PET ke: tora ea crystallization, tora e omisang, extruder, hlooho ea hlobo, calender ea meqolo e meraro le coiler.

Ts'ebetso ea tlhahiso ke e latelang: crystallization ea thepa e tala → ho omisa → extrusion plasticizing → extrusion molding → calendering molding → lihlahisoa tsa matsoelintsoeke.

Mohato oa pele ke crystallization. Likarolo tsa PET li futhumetse ebile li khabisoa ka tora ea crystallization, e le hore limolek'hule li hlophisoe ka makhethe, ebe mocheso oa phetoho ea likhalase oa likhahla o phahama, o reretsoeng ho thibela ho khomarela nakong ea ho omisa le ho thibela hopper. Crystallization ka kakaretso ke mohato oa bohlokoa, ho nka metsotso e 30 ho isa ho metsotso e 90, 'me mocheso o ka tlase ho 149°C.

Mohato oa bobeli, omella. Ka lebaka la ho senyeha ha hydrolytic ea PET e bakoang ke metsi tlas'a maemo a phahameng a mocheso, sebopeho sa eona sa ho khomarela se fokotsehile, 'me thepa ea eona ea' mele, haholo-holo matla a matla, e tla fokotseha ka ho fokotseha ha boima ba limolek'hule. Ka hona, PET e tlameha ho omisoa pele e qhibiliha le extrusion ho fokotsa mongobo, 'me mongobo o lokela ho ba ka tlase ho 0.005%. Ka lebaka la thepa ea hygroscopic ea thepa ea PET, metsi a tebileng ka holim'a selae a tla theha maqhama a limolek'hule, 'me metsi a mang a tla ba teng ka hare ho selae, e leng se bakang mathata a ho omisa, kahoo moea o chesang ka kakaretso o ke ke oa sebelisoa. Sebaka sa phoka sa moea o chesang se hlokeha ho ba ka tlase ho -40 ° C, 'me moea o chesang o fetisoa ka potoloho e koetsoeng ho ea ho omisa hopper bakeng sa ho omisa ho tsoelang pele. # mochini oa extruder.

Litšoantšo tse hlahisitsoeng li tsoa fekthering ea bareki ba JWELL Turkey ka Loetse. Kamora ho tlisoa ho tloha fekthering ea Jwell ho ea fekthering ea moreki oa Turkey, moenjiniere oa Jwell o ile a ea fekthering ho ea kenya mochini oa PET sheet extrusion bakeng sa liphutheloana tsa thermoforming. # rpet polasetiki ea recycling

Mohato oa boraro ke ho bopa extrusion. PET e fetoloa polima e nang le ntlha e hlakileng ea ho qhibiliha ka mor'a hore ho be le kristale le ho omisoa, 'me mocheso oa ho bopa oa polymer o phahame' me moeli oa taolo ea mocheso o moqotetsane. Likaroloana tse sa qhibilihang li arohanngoa le ho qhibiliha ho sebelisoa sekoti se thibelang ho sebelisoa ka ho khetheha bakeng sa polyester, e thusang ho boloka ts'ebetso e telele ea ho kuta le ho eketsa tlhahiso ea extruder. The flexible die lip head with flow line stopper rod is used, the head is conical, the streamlined flow channel and non-scratch die lip bonts’a lakane e lokela ho ba hantle, heater ea hlooho e na le mosebetsi oa ho ntša metsi le ho hloekisa, hlooho e shoang molomo lekhalo e lokela ho etsa bonnete ba ho lumellana hantle, hlooho e shoang molomo oa molomo lekhalo ho lumellana ka ho toba e ama ho kheloha ha cape le ho kheloha ha lekhalo. Mocheso o lumellanang le sebaka se ka pele, sebaka se bohareng sa fuselage, sebaka se ka morao sa fuselage, mochine oa ho fetola letlooa le hlooho ka ho latellana 240 ° C-260 ° C, 265 ° C-275 ° C, 260 ° C-265 ° C, 260 ° C-265 ° C, 255 ° C. # mochini oa pampiri oa lapeng

Mohato oa bone: Pholisa 'me u behe. Ka mor'a hore ho qhibiliha ho tsoe hloohong ka ho toba ka k'halendara ea li-roll tse tharo bakeng sa k'halendara le ho pholisa, sebaka se pakeng tsa khalendara ea li-roll tse tharo le hlooho hangata se bolokiloe hoo e ka bang 8cm, hobane haeba sebaka se le seholo haholo, lakane e bonolo ho sag le wrinkles, e leng se fellang ka ho fela ha lakane. Ho phaella moo, ka lebaka la sebaka se feteletseng, ho pholile ha mocheso oa mocheso ho lieha haholo 'me crystallization e tšoeu, e sa lumellaneng le calendering. Sehlopha se tharo sa calendering se na le li-roller tse tharo tse ka holimo, tse bohareng le tse ka tlaase, mola o bohareng o tsitsitse, 'me motsoako oa li-roller tse peli tse ka holimo le tse tlaase li ka isoa holimo le tlaase ha mocheso oa holim'a metsi o le 40 ° C-50 ° C nakong ea pholileng ea calendering. Ka ho fallela holimo le ho theosa le lekhalo ho fetola lekhalo la moqolo, mocheso oa li-rollers tse peli tse ka holimo le tse ka tlaase ke 30 ° C-60 ° C, 52 ° C-68 ° C, ka ho latellana, li-roller tse tharo li lokela ho etsa bonnete ba hore lebelo le lumellana, lebelo le lokela ho ba ka holim'a lebelo la extrusion, morero ke ho fokotsa ho atolosoa ha lisebelisoa, ho fokotsa letlapa le ka hare ho senya letlapa. PET e tla hlahisa crystallization ka har'a 100 ° C ho 250 ° C, 'me tekanyo ea crystallization ke 140 ° C ho 180 ° C ha e potlakile, kahoo crystallization e ka phethoa ka metsotsoana e seng mekae. PET e hloka ho feta kapele sebakeng sena sa mocheso oa crystallization le ho laola ka thata mocheso oa li-roll tse tharo.

Mohato oa Bohlano: Hula 'me u theole. Letlapa le tsoa ka "calender roller" 'me le kena mochineng oa ho hula ka mochini oa tataiso. The traction sesebediswa e entsoe ka mafolofolo rabara rolara le etseng letho rabara rolara, 'me khatello ea tse peli tse rolara ke haholo-holo ho thibela lakane ho tloha flattened ha lakane huloa ke rollers tse peli ho matsoelintsoeke sesebediswa.