PET Sheet Kugadzira Maitiro

Raw zvinhu zvePET sheet #pet sheet extrusion

PET sheet, semamwe mapurasitiki, kuita kwacho kunoenderana zvakanyanya nehuremu hwemamorekuru, uye chimiro che viscosity chinotarisa huremu hwemamorekuru. Iyo yakakura iyo intrinsic viscosity, zviri nani zvemuviri uye makemikari zvivakwa. asi iyo murombo fluidity, inoguma mukuumba kuoma. Iyo yakaderera iyo intrinsic viscosity ndeye, iyo yakaipisisa ye physicochemical zvimiro uye simba rekuita ndizvo. Saka, 0.8dl/ G-0.9dL / g inofanira kusarudzwa nokuda kwechimiro chechimiro chePET transparent film.

PET yekugadzira maitiro #extrusora de garrafa pet

Iyo huru yekugadzira michina yePET transparent sheet ndeye: crystallization tower, drying tower, extruder, mold head, matatu-roll calender uye coiler.

Maitiro ekugadzira ndeaya anotevera: raw material crystallization → kuomesa → extrusion plasticizing → extrusion molding → calendering molding → winding products.

Nhanho yekutanga ndeye crystallization. Iyo PET zvimedu zvinopisa uye zvakanamirwa mu crystallization tower, kuitira kuti mamorekuru arongedzerwe zvakanaka, uye ipapo tembiricha yekuchinja kwegirazi yezvimedu inosimudzwa, iyo inotarisirwa kudzivirira kunamatira panguva yekuomesa uye kuvhara hopper. Crystallization kazhinji inhanho yakakosha, kutora maminetsi makumi matatu kusvika makumi mapfumbamwe, uye tembiricha iri pasi pe30 ° C.

Nhanho yechipiri, yakaoma. Nekuda kweiyo hydrolytic degradation yePET inokonzerwa nemvura pasi pekushisa kwakanyanya, hunhu hwayo hwekunamatira hunodzikiswa, uye hunhu hwayo hwepanyama, kunyanya simba rekuita, huchaderedzwa nekudzikiswa kwehuremu hwemamorekuru. Naizvozvo, iyo PET inofanira kuomeswa isati yanyunguduka uye extrusion kuderedza hunyoro hwemukati, uye hunyoro hunofanira kunge huri pasi pe0.005%. Nekuda kweiyo hygroscopic pfuma yePET zvinhu, mvura yakadzika mukati meiyo chimedu ichaita ma molecular bond, uye imwe mvura ichave yakadzika mukati mechikamu, zvichikonzera kuoma kwekuoma, saka mhepo inopisa yakawanda haigone kushandiswa. Dova remhepo inopisa rinodiwa kuti rive pasi -40 ° C, uye mhepo inopisa inopfuudzwa kuburikidza nevhavha yakavharwa kusvika kune yakaoma hopper kuti irambe ichiomesa. #pe extruder muchina.

Mifananidzo yakaratidzwa kubva kuJWELL Turkey fekitori yemutengi munaGunyana. Mushure mekuburitswa kubva kuJwell fekitori kuenda kuTurkey mutengi fatory, Jwell mainjiniya akaenda kufekitari kunoisa PET sheet extrusion muchina wekuisa thermoforming packaging. #rpet purasitiki kudzokorodza

Nhanho yechitatu ndeye extrusion molding. PET inoshandurwa kuita polymer ine nzvimbo yekunyungudika iri pachena mushure mekristaro uye kuomeswa, uye tembiricha yekuumba yepolymer yakakwira uye tembiricha yekudzora huwandu hwakatetepa. Zvimedu zvisina kunyungudutswa zvakapatsanurwa kubva mukunyunguduka uchishandisa barrier screw yakanyatsogadzirirwa polyester, iyo inobatsira kuchengetedza kureba kwekuveura maitiro uye kuwedzera extruder kubuda. Iyo inochinjika inofa lip musoro ine inoyerera mutsara yekumisa tsvimbo inoshandiswa, iyo musoro ndeye conical, iyo yakakwenenzverwa yekuyerera chiteshi uye isina-scratch inofa lip inoratidza pepa rinofanira kunge rakanaka, iyo heater yemusoro ine basa rekudonha uye kuchenesa, musoro unofa lip gap unofanirwa kuve nechokwadi chekufanana, musoro unofa lip gap kufanana kunokanganisa zvakananga kuchinjika kwepeti gobvu uye kutsauka kweiyo shizha kutsauka. Kupisa kunoenderana nenzvimbo yepamberi, nzvimbo yepakati yefuselage, nzvimbo yekumashure yefuselage, shanduko yemambure uye musoro zvakateerana 240 ° C-260 ° C, 265 ° C-275 ° C, 260 ° C-265 ° C, 260 ° C-265 ° C, 255 ° C, 265 ° C. #pet sheet muchina

Nhanho yechina: Cool uye gadzira. Mushure mekunge kunyunguduka kwabuda mumusoro kwakananga mutatu-roll calender yecalender uye kutonhora, chinhambwe chiri pakati petatu-roll calender uye musoro unowanzo chengetwa paanenge 8cm, nekuti kana chinhambwe chakanyanya, bepa riri nyore kudonha uye kuunyana, zvichiita kuti pepa ripere. Mukuwedzera, nekuda kwechinhambwe chakanyanyisa, kupisa kwekupisa kutonhora kunononoka uye crystallization ichena, iyo isingaiti kune calendering. Iyo matatu roller calendering unit inoumbwa nepamusoro, yepakati uye yakadzika matatu rollers, iyo yepakati roller mutsara yakagadziriswa, uye axis yekumusoro uye yakaderera rollers maviri anogona kutamiswa kumusoro uye pasi kana tembiricha yemupumburu wepasi iri 40 ° C-50 ° C panguva yekutonhora kwecalendering. Nokufambisa kumusoro uye pasi peaxis kuti igadzirise gap remupumburu, kutonhora kwepamusoro uye pasi maviri rollers ndeye 30 ° C-60 ° C, 52 ° C-68 ° C, zvichienderana, matatu rollers anofanirwa kuve nechokwadi kuti kukurumidza kunopindirana, kukurumidza kunofanira kunge kuri pamusoro pekumhanya kwekuwedzera, chinangwa ndechekugadzirisa kuwedzera kwechinyorwa, ichisiya kushushikana kwemukati kuparara uye kuparara kwemukati. PET ichabudisa crystallization muhuwandu hwe100 ° C kusvika 250 ° C, uye crystallization rate ndeye 140 ° C kusvika 180 ° C kana ichikurumidza, saka crystallization inogona kupedzwa mumasekondi mashomanana. PET inoda kukurumidza kupfuura iyi crystallization tembiricha nzvimbo uye yakanyatso kudzora tembiricha-matatu.

Nhanho yechishanu: Dhonza uye dhonza. Pepa rinobuda kuburikidza necalender roller uye rinopinda muchina chekukwevera kuburikidza negidhi roller. Mudziyo wekukweva unoumbwa neanoshanda rabha roller uye passive rubber roller, uye kudzvanywa kwemaviri ma roller kunonyanya kudzivirira bepa kuti risatsvedzerwe kana bepa radhonzwa nema roller maviri kune chinomonereka mudziyo.