Naka lapho umjovo ubumba PET Perform?

uma udinga umshini we-PET cela i-FLYSE

Oxhumana naye: Lv 8618958305290

1. Ukucutshungulwa kwamapulasitiki

Ngoba ama-macromolecule e-PET aqukethe amaqembu e-lipid futhi anezinga elithile le-hydrophilicity, ama-pellets azwela kakhulu emanzini emazingeni okushisa aphezulu. Lapho okuqukethwe kwamanzi kweqa umkhawulo, isisindo samangqamuzana e-PET siyancipha ngesikhathi sokucubungula, futhi imikhiqizo iba nemibala futhi ibe brittle. Ngakho-ke, impahla kumele yomiswe ngaphambi kokucubungula, futhi izinga lokushisa lokumisa liyi-150 ° C ngaphezu kwalokho 4 amahora, ngokuvamile 170°C for 3-4 amahora. Indlela yokudubula emoyeni ingasetshenziswa ukuhlola ukuthi impahla yomile ngokuphelele yini. Ngokuvamile, ingxenye yezinto ezigaywe kabusha akufanele idlule 25%, futhi izinto ezigaywe kabusha kufanele zomiswe kahle.

2. Ukukhethwa komshini wokubumba umjovo

Ngoba i-PET inesikhathi esifushane esizinzile ngemuva kwephuzu lokuncibilika kanye nendawo ephezulu yokuncibilika, kuyadingeka ukukhetha uhlelo lomjovo olunezigaba eziningi zokulawula izinga lokushisa kanye nokukhiqizwa kokushisa okuncishisiwe kwe-self-friction ngesikhathi seplastiki, kanye nesisindo sangempela somkhiqizo (impahla equkethe amanzi) akufanele kube ngaphansi komjovo womshini. 2/3 yenani. Ngokusekelwe kulezi zidingo, I-FLYSE isungule uchungechunge lwezinhlelo ze-PET plasticizing ezincane neziphakathi eminyakeni yamuva nje. Amandla okubamba akhethwa ngokuya ngobukhulu kuno-6300t/m2.

3. Isikhunta kanye nomklamo wesango

I-PET preforms ngokuvamile akhiwa ngu isikhunta umgijimi hot. Kungcono ukuthi kube nebhodi lokufaka ukushisa phakathi kwesikhunta kanye nesifanekiso somshini wokubumba umjovo, futhi ukujiya kwayo kucishe kube ngu-12mm, futhi ibhodi lokufaka ukushisa kufanele likwazi ukumelana nokucindezela okukhulu. I-exhaust kufanele yanele ukugwema ukushisa okweqile kwendawo noma ukuhlukana, kodwa ukujula kwembobo yokukhipha umoya akufanele kudlule u-0.03mm, ngaphandle kwalokho kulula ukukhiqiza flash.

4. Izinga lokushisa elincibilikayo

Ingalinganiswa ngendlela yokudubula komoya. 270-295℃, i-GF-PET ethuthukisiwe ingasethelwa ku-290-315℃, njll.

5. Isivinini sokujova

Ngokuvamile, i isivinini somjovo kufanele isheshe, okungavimbela ukuqina ngaphambi kwesikhathi ngesikhathi sokujova. Kodwa ngokushesha okukhulu, izinga eliphezulu le-shear lenza impahla ibe brittle. Ukudubula kuvame ukuqedwa ngaphakathi 4 imizuzwana.

6. Ukucindezela emuva

Okuphansi kuba ngcono, ukuze lingagugi. Ngokuvamile hhayi ngaphezu kwe-100bar. Ngokuvamile akudingekile.

7. Isikhathi sokuhlala

Ungasebenzisi izikhathi zokuhlala ngokweqile ukuze uvimbele ukuncipha kwesisindo samangqamuzana. Zama ukugwema amazinga okushisa angaphezu kuka-300°C. Uma isikhathi sokuphumula singaphansi 15 imizuzu. Kudingeka kuphela ukushaywa umoya; uma kuthatha ngaphezu 15 imizuzu, kufanele ihlanzwe nge-viscosity PE, futhi izinga lokushisa lomgqomo kufanele lehliselwe ekushiseni kwe-PE kuze kube yilapho livulwa futhi.

8. Izinyathelo zokuzivikela

1) Izinto ezigaywe kabusha akufanele zibe zinkulu kakhulu, kungenjalo kulula “ibhuloho” endaweni engenalutho futhi kuthinte i-plasticization. 2) Uma izinga lokushisa lesikhunta lingalawulwa kahle noma izinga lokushisa lempahla lingalawulwa kahle, kulula ukukhiqiza “inkungu emhlophe” nokungafihli. Izinga lokushisa lesikhunta liphansi futhi lifana, isivinini sokupholisa siyashesha, futhi umkhiqizo usobala ngokucwebezela okuncane.