Cov kav dej polyethylene (PE kav) tau siv dav hauv dej, xa hluav taws xob, kev ua liaj ua teb, thiab kev thauj mus los ntawm cov dej. Lawv cov yam ntxwv zoo li cuam tshuam ncaj qha rau kev txheeb xyuas cov khoom lag luam thiab kev tswj kom zoo, thiab muaj feem cuam tshuam nrog lawv cov txheej txheem tsim khoom, cov khoom siv, thiab kev ua haujlwm zoo. Kab lus no yuav piav qhia txog cov yam ntxwv zoo ntawm cov kav dej polyethylene los ntawm cov khoom xws li xim, qhov chaw, qhov tseeb, qhov tseeb, gloss, thiab cov cim.
Xim yam ntxwv
Cov xim ntawm cov kav dej polyethylene feem ntau yog txiav txim siab los ntawm cov masterbatch ntxiv. Lub hauv paus xim feem ntau yog xim dub, raws li cov xim dub masterbatch feem ntau muaj UV- cov tshuaj tiv thaiv (xws li cov pa roj carbon dub), uas ua rau cov yeeb nkab tsis muaj kev laus hauv qhov chaw sab nraum zoov. Tsis tas li ntawd, nyob ntawm daim ntawv thov, cov kav dej polyethylene kuj tuaj yeem yog xiav (feem ntau siv rau kev thauj mus los hauv dej), daj (rau roj), ntsuab (rau kev ua liaj ua teb dej), lossis lwm yam xim. Txawm hais tias cov xim, nws yuav tsum tsis sib xws thiab zoo ib yam, tsis muaj qhov pom tseeb xim sib txawv los yog me ntsis, qhia txog qhov sib xws ntawm raw khoom sib xyaw thiab kev ruaj ntseg ntawm cov txheej txheem ntau lawm.
Surface condition
High -cov kav dej polyethylene zoo yuav tsum muaj qhov du thiab tiaj tus, tsis muaj qhov tsis sib xws, npuas, tawg, lossis khawb. Cov teeb meem no tuaj yeem tshwm sim los ntawm cov khoom siv tsis huv, tuag hnav, lossis cov txheej txheem extrusion tsis raug. Me ntsis longitudinal streaks (ua los ntawm qhov tsis sib xws ntawm di ncauj clearance nyob rau hauv lub extruder lub taub hau) muaj ntau, tab sis ntau heev sib sib zog nqus streaks los yog transverse kab nrib pleb qhia tau hais tias muaj teeb meem zoo thaum lub sij hawm tsim khoom. Tsis tas li ntawd, cov phab ntsa sab hauv ntawm cov yeeb nkab feem ntau yuav tsum tau ua kom smoother kom txo tau cov dej thauj mus los thiab tiv thaiv kev scaling.
Dimensional Accuracy thiab Shape: Qhov tseeb qhov tseeb ntawm cov kav dej polyethylene ncaj qha cuam tshuam rau kev ntseeg siab ntawm lawv cov kev sib txuas. Sab nraud txoj kab uas hla thiab phab ntsa thickness ntawm cov qauv kav yuav tsum nruj me ntsis raws li thoob ntiaj teb los yog kev lag luam qauv (xws li ISO 4427, GB / T 13663, thiab lwm yam), nrog rau feem ntau me me kam rau ua. Kev kuaj pom pom tuaj yeem muab kev ntsuas ua ntej ntawm seb cov yeeb nkab puas yog lub tog raj kheej li niaj zaus, thiab seb puas muaj qhov sib txawv hauv ellipticity lossis hauv cheeb tsam nthuav dav / kev cog lus. Nyob rau tib lub sijhawm, cov yeeb nkab kawg yuav tsum raug txiav kom du, tsis muaj burrs lossis tsis zoo bevels, kom ntseeg tau tias kev sib khi ntawm kev sib txuas tom qab vuam lossis lub qhov (socket) txuas.
Gloss: Lub gloss ntawm cov kav dej polyethylene muaj feem xyuam rau nws cov khoom siv raw (xws li siab- ntom polyethylene (HDPE), qis- ntom polyethylene (LDPE), lossis linear qis- ntom polyethylene (LLDPE)) thiab kev siv tshuab. HDPE kav feem ntau pom qhov qis mus rau nruab nrab gloss, nrog rau qhov muag muag thiab du; hos LDPE kav tej zaum yuav muaj ib tug me ntsis matte tiav vim lawv looser molecular saw qauv. Cov gloss ntau dhau yuav qhia tau tias qhov sib ntxiv ntawm cov roj nplua nyeem ntau dhau rau cov khoom siv raw lossis kub extrusion ntau dhau ua rau dhau -plasticization, muaj feem cuam tshuam rau cov yeeb nkab ntev - lub sij hawm txhua yam khoom.
Marking thiab Printing
Rau kev txheeb xyuas thiab siv tau yooj yim, cov kav dej polyethylene feem ntau tau cim kom meej nrog cov ntaub ntawv suav nrog cov chaw tsim khoom lub npe, cov khoom tshwj xeeb (xws li nominal sab nraud thiab phab ntsa thickness), cov khoom siv qib (xws li PE80 lossis PE100), tus qauv tooj, hnub tsim khoom, thiab batch tooj. Cov cim no yuav tsum tau ua kom zoo nkauj, nrog cov ntawv ntshiab thiab muaj zog, tseem muaj peev xwm txawm tias tom qab lub sijhawm ntev los yog kev sib txhuam. Qee qhov siab - cov kav dej kawg kuj tseem qhia tau tias muaj kev ntsuas siab, UV tsis kam, lossis cov ntawv thov tshwj xeeb.
Cov yam ntxwv ntawm cov yeeb nkab polyethylene yog ib qho kev cuam tshuam ncaj qha ntawm lawv qhov zoo tag nrho, suav nrog ntau qhov ntev xws li xim uniformity, nto smoothness, qhov tseeb qhov tseeb, qhov tsim nyog gloss, thiab ua tiav ntawm cov cim. Los ntawm kev tswj hwm cov ntsuas pom zoo no, tsis yog tsuas yog tuaj yeem ua kom ntseeg tau ntawm cov kav dej hauv lub sijhawm thauj mus los, kev teeb tsa, thiab siv, tab sis nws kuj tseem tuaj yeem muab cov kev lees paub tseem ceeb rau qhov project zoo. Yog li ntawd, kev soj ntsuam zoo ntawm cov yam ntxwv ntawm cov kav dej polyethylene yog qhov tseem ceeb tshaj plaws hauv kev tsim khoom, kev lees txais, thiab kev saib xyuas theem.
