1.Dehumidifying Dryer:
Kev cuam tshuam: Tshem tawm kev ntxhov siab sab hauv, npuas, thiab nyiaj streaks.
Mechanism: Rau hygroscopic plastics xws li PET, PA, thiab PC, taug qab ya raws vaporizes thaum siab -kub extrusion. Qhov no ua rau micro- npuas nyob rau hauv cov khoom, nyiaj streaks ntawm qhov chaw, thiab hydrolytic degradation ntawm cov polymer, txo cov neeg kho tshuab lub zog (tshwj xeeb tshaj yog cuam tshuam toughness) thiab pob tshab. Kev ziab tsis txaus yog thawj qhov ua rau kev ua tsis tiav rau cov ntaub ntawv no.
2.Automatic Pub & Metering System:
Kev cuam tshuam: xim sib xws, kev ua tau zoo sib xws, thiab kev tsim khoom ruaj khov.
Mechanism: Ua kom muaj tseeb, ruaj khov, thiab tsis tu ncua kev faib ua feem ntawm lub hauv paus cob nrog masterbatch thiab additives (xws li, antioxidants, stabilizers). Ib qho kev hloov pauv ntawm qhov sib piv ncaj qha ua rau batch - mus rau -batch xim variation thiab localized kev ua haujlwm tsis xws luag (xws li, nkig seem alternating nrog nyuaj seem). Poob-hauv- hnyav (LIW) feeders yog qhov tseem ceeb rau kev ua tiav siab{10}} zoo sib xyaw thiab xim.
3.Screen Changer (Automatic/Manual):
Kev cuam tshuam: khoom purity, nto tiav, thiab ntau lawm continuity.
Mechanism: Lim tawm impurities hauv cov yaj xws li carbonized hais, hlau chips, thiab gels. Cov ntxaij vab tshaus txhaws ua rau muaj zog rov qab siab thiab extrusion hloov pauv, uas ua rau qhov tsis sib xws, khawb qhov chaw, lossis qhov muag ntses. Tsis siv neeg tshuaj ntsuam hloov pauv tso cai hloov pauv yam tsis tau nres txoj kab, ua kom ruaj khov zoo thaum lub sijhawm ua haujlwm ntev.
4.Melt Pump (Gear Pump):
Kev cuam tshuam: Dimensional raug, tshem tawm cov cim ntws, thiab txo qhov kam rau ua.
Mechanism: Nyob nruab nrab ntawm cov extruder thiab cov tuag, nws yog meters thiab xa ib tug ruaj khov yaj ntws, tshem tawm tag nrho cov siab thiab ntws fluctuations tshwm sim los ntawm cov ntsia hlau pulsation, pub variation, los yog tshuaj ntsuam clogging. Qhov no yog qhov tseem ceeb rau ultra- cov yeeb yaj kiab nyias, cov raj kho mob precision, cov ntawv kho qhov muag, thiab lwm yam khoom uas muaj qhov xav tau siab heev rau cov thickness uniformity.
5. Tuag & Tuag Lip:
Kev cuam tshuam: Cov khoom hla-sectional shape, deg zoo, thiab extrusion uniformity.
Mechanism: Tus tsim qauv khiav txiav txim siab qhov sib xws ntawm cov khoom tawg. Kev tsim tsis zoo tuag ua rau qhov tsis sib xws (piv txwv li, phab ntsa thickness eccentricity hauv cov kav dej, qhov chaw tuab thiab cov npoo nyias nyias hauv cov ntawv), cov kab uas muaj qhov sib xws, cov cim ntws nto, thiab lwm yam tsis xws luag. Qhov kub tswj qhov tseeb ntawm qhov tuag kuj ncaj qha cuam tshuam rau kev ruaj ntseg ntawm cov yaj tawm ntawm qhov tuag.
6.Sizing & Txias System (Nqus Sizing Tank, Sizing Tuag, Txias Tank / Calendering Roll):
Kev cuam tshuam: Cov khoom kawg qhov ntev, roundness/flatness, internal stress, thiab crystallinity.
Mechanism:
Vacuum Sizing (rau cov kav dej):
Lub tshuab nqus tsev thiab qhov ntsuas cua txias txiav txim siab qhov tseeb ntawm cov kav dej thiab lub voj voog. Kev txias txias heev dhau los yog tsis sib xws tuaj yeem ua rau ovality, sagging, los yog muaj zog residual stress.
Sizing Tuag (rau profiles):
Lub geometry ntawm complex profiles yog tag nrho tsau los ntawm meej txias nyob rau hauv lub sizing tuag. Cov cua txias tsis zoo ua rau warping, twisting, thiab ntau qhov seem shrinkage.
Calendering Roll (rau nplooj ntawv):
Lub uniformity thiab precision ntawm yob kub ncaj qha cuam tshuam rau saum npoo gloss, flatness, thiab crystallinity uniformity ntawm daim ntawv. Cov cua txias tsis sib xws tuaj yeem tsim "Newton's rings" lossis bow warpage.