PET preforms yog lub hauv paus ntawm niaj hnub tsim lub raj mis yas, dav siv nyob rau hauv ntim rau haus, dej ntxhia, tshuaj, tshuaj pleev ib ce, khoom noj qab haus huv, thiab tshuaj reagents. Cov txheej txheem ntau lawm ua raws li covob -kab ruam txoj kev, uas muajtxhaj tshuaj moldinglos tsim preforms nrog meej caj dab tiav, qhov siab, thiab phab ntsa thickness, ua raws litshuab moldinglos ua lub raj mis zaum kawg. Ob - cov txheej txheem no ua kom cov khoom zoo sib xws, qhov tseeb ntawm qhov tseeb, thiab lub zog zoo dua qub, ua rau nws qhov kev xaiv zoo tshaj plaws rau kev siv loj - nplai kev lag luam thiab cov khoom muaj txiaj ntsig siab.
Kev thov thoob ntiaj teb rau PET lub raj mis txuas ntxiv nce ntxiv vim lawv cov kav ntev, tshuaj tiv thaiv, thiab muaj peev xwm khaws cov khoom ncaj ncees, uas ua rau kev nkag siab PET preform manufacturing tseem ceeb heev rau cov neeg yuav khoom txawv teb chaws nrhiav cov neeg muag khoom txhim khu kev qha.
PET Raw Khoom Khoom
Siab - zoo PET resin yog qhov tseem ceeb rau kev tsim cov khoom ua tau zoo thiab ua haujlwm zoo. Cov khoom tseem ceeb ntawm PET muaj xws li:
Zoo Transparency:Tshaj 90% pob tshab nrog iav -zoo li, glossy nto uas txhim kho cov khoom zoo li.
Superior Aroma Retention:Khaws cov khoom qub los yog cov ntxhiab tsw ntawm cov dej haus thiab cov khoom siv tshuaj, tseem ceeb rau cov khoom noj thiab ntim khoom kom zoo nkauj.
Strong Chemical Resistance:Resistant rau acids thiab feem ntau cov organic chemicals, ua kom cov khoom ruaj khov thiab kev nyab xeeb.
High Hygienic Standards:PET muaj kev nyab xeeb rau kev siv zaub mov thiab tshuaj, ua tau raws li cov qauv thoob ntiaj teb.
Kev nyab xeeb hauv kev tuav:Tsis tso cov pa phem thaum hlawv.
Mechanical Strength:Zoo tensile thiab cuam tshuam tsis kam, uas tuaj yeem txhim kho ntxiv los ntawmbiaxial stretching, muab kev txhim kho siab tsis kam thiab kav ntev.
Cov khoom no xyuas kom meej tias PET preforms tsim nyog rau ntau yam kev lag luam siv, los ntawm qib siab - cov tshuaj pleev ib ce kawg mus rau kev ntim tshuaj thiab kev tsim dej haus.
Kev tswj cov dej noo thiab kev ziab kom qhuav
PET yoghygroscopic, txhais tau tias nws absorbs noo noo los ntawm ib puag ncig thaum khaws cia, thauj, thiab ua. Cov dej noo ntau dhau tuaj yeem ua rau:
Nce hauv Acetaldehyde (AA):Qhov no tuaj yeem cuam tshuam tsis zoo rau qhov tsw thiab tsw ntawm lub raj mis dej haus.
Txo hauv Intrinsic Viscosity (IV):IV qis ua rau txo qis kev tiv thaiv, ua rau lub raj mis ua rau deformation lossis tawg.
Kev ziab kom zoo yog qhov tseem ceeb los tswj cov khoom zoo.
Optimal Drying Parameters rau PET Preforms:
| Parameter | Kev pom zoo |
|---|---|
| Qhuav kub | 165-175 degree |
| Lub sij hawm nyob | 4-6 teev |
| Pub Qhov Chaw Kub Kub | Tshaj 160 degree |
| Dew Point | Hauv qab -30 degree |
| Qhuav Airflow | 3.7 m³ / h rau kg / h |
| Zoo tagnrho Residual Moisture | 0.001–0.004% |
Nws yog ib qho tseem ceeb kom nco ntsoov tiasdhau - ziabPET tuaj yeem ua rau oxidative degradation, uas kuj txo cov viscosity ntawm sab hauv thiab tuaj yeem ua rau acetaldehyde tsim. Yog li ntawd, kev tswj xyuas meej ntawm kev ziab kom qhuav yog tsim nyog los xyuas kom meej qhov ua tau zoo.
Cov yam tseem ceeb hauv kev txhaj tshuaj molding
Khoom siv thiab kev npaj
PET granules yog rhiab heev rau ya raws vim hydrophilic pawg hauv lawv cov qauv molecular. Cov granules qhuav tsis zoo tuaj yeem ua rau:
Xim Variation:Discolored preforms txo qhov zoo nkauj zoo nkauj.
Brittleness:Kev ziab tsis txaus tuaj yeem ua rau cov khoom tawg yooj yim ua rau tawg thaum lub tshuab molding.
Cov Txheej Txheem Kom Qhuav:
Kub: 150-170 degree
Sijhawm: 3-4 teev
Recycled PET: Yuav tsum tsis pub tshaj 25% thiab yuav tsum tau qhuav tag.
Txhaj Moulding Tshuab Xaiv
PET muaj lub siab melting point thiab lub sij hawm luv luv stabilization tom qab melting. Yog li ntawd, cov cav tov yuav tsum muaj:
Ntau -zone Temperature Control:Ua kom zoo ib yam melting thiab txo degradation.
Tsis tshua muaj kev sib txhuam Plasticizing:Minimizes cov khoom shear thiab khaws cia qhov hnyav molecular.
Muaj peev xwm sib piv:Lub tshuab yuav tsum txhaj yam tsawg kawg nkausob -feem peb ntawm cov khoom hnyavsuav nrog sprue, kom paub tseeb tias sau thiab tsim qauv preform.
Pwm thiab Gate Design
Kub khiav pwm yog tus qauv rau PET preforms. Kev tsim pwm tsim nyog suav nrog:
Thaum tshav kub kub rwb thaiv tsev phaj:~ 12mm thickness ntawm pwm thiab platen kom txo thermal poob.
Qhov cua:Kev tso cua kom txaus tiv thaiv kom tsis txhob muaj cua sov thiab tawg; vent qhov tob Tsawg dua los yog sib npaug rau 0.03mm kom tsis txhob flash.
Qhov Rooj Positioning:Ua kom cov ntaub ntawv tsis sib xws thiab tsis txhob vuam kab lossis cov cim ntws.
Cov Txheej Txheem Ua Haujlwm
| Parameter | Kev pom zoo |
|---|---|
| Melt kub | 270-295℃(rov ua dua GF-PET: 290-315 degree) |
| Txhaj Ceev | Kev txhaj tshuaj sai, feem ntau<4 seconds |
| Rov Qab Siab | Tsawg (<100 bar), generally unnecessary |
| Lub sij hawm nyob | Avoid prolonged hold and temperatures >300 degree |
Tseem ceeb:Kev txhaj tshuaj ntau dhau tuaj yeem ua rau siab shear tus nqi, ua rau brittle preforms. Kev tuav tswj kev txhaj tshuaj ceev thiab qhov kub thiab txias ua kom pom kev zoo ntawm molecular orientation thiab mechanical zog.
Kev ceev faj thaum tsim khoom
Tsis txhob siv cov khoom siv ntau dhau los tiv thaiv kev sib tsoo thiab cov yas tsis zoo.
Khaws cov pwm kub sib xws kom tiv thaiv kom txhob muaj xim dawb lossis "dawb pos huab."
Ceev ceev, tswj cua txias kom pom tseeb thiab zoo ib yam preform zoo.
Tsis tu ncua saib xyuas cov qib acetaldehyde thiab intrinsic viscosity kom tswj cov qauv khoom.
Kev lag luam kev siv thiab kev ua lag luam tus nqi
PET preforms yog siv rau hauv:
Dej haus:Carbonated dej qab zib, ntxhia dej, kua txiv hmab txiv ntoo.
Pharmaceuticals thiab Nutraceuticals:Syrups, vitamin ntxiv, kua tshuaj.
Tshuaj pleev ib ce:Toners, lotions, thiab kua zoo nkauj.
Tshuaj:Reagents thiab kev daws teeb meem.
Covthoob ntiaj teb PET lub raj mis lag luamtxuas ntxiv zuj zus vim qhov xav tau ntau ntxiv rau lub teeb yuag, ruaj khov, thiab ntim khoom zoo. Siab - zoo PET preforms txhim khu kev ua tau zoo, txo cov khoom pov tseg, thiab ua kom ua raws li cov qauv kev nyab xeeb thoob ntiaj teb, muab cov tuam txhab muaj kev sib tw hauv kev lag luam hauv tsev thiab txawv teb chaws.
SZ-MOLDTECH: Advanced PET Preform Solutions for Global Buyers
SZ-MOLDTECH (Jiaxing) Co., Ltd. is aua cov chaw tsim khoom ntawm siab -precisionPET preform pwm, muab:
Advanced Kub Runner Technology:Ua kom cov dej ntws zoo ib yam thiab muaj qhov raug siab.
Kev cai pwm tsim:Txhawb ntau hom lub raj mis, qhov ntau thiab tsawg, thiab lub caj dab tiav.
Durable Mould Siv:Ntev - ua haujlwm tau ntev thiab txo tus nqi kho.
Kev pab txhawb nqa:Muab cov neeg yuav khoom thoob ntiaj teb nrog kev sib tham txog kev tsim pwm, kev tsim khoom, thiab kev ua kom zoo.
SZ-MOLDTECH ua keinnovation, precision, thiab kev ntseeg siab, ua rau nws yog tus khub zoo tshaj plaws rau cov neeg yuav khoom thoob ntiaj teb nrhiav kev sib luag ntawm PET preform zoo thiab siab -kev ua tau zoo ntau lawm.
Xaus
High - zoo PET preforms yog qhov tseem ceeb rau kev tsim khoomLub raj mis ruaj khov, pob tshab, thiab tshuaj lom neeg resistant fwj. Kev vam meej nyob ntawm:
Xaiv cov khoom zoo PET raw khoom.
Tswj cov dej noo los ntawm kev ziab kom qhuav.
Ua kom zoo tshaj qhov kev txhaj tshuaj molding.
Tsim kom muaj siab- pwm zoo nrog lub qhov cua kom zoo thiab cua sov.
Koom tes nrog cov tuam txhab tsim pwm xws li SZ-MOLDTECH.
Rau cov neeg yuav khoom txawv teb chaws, ua haujlwm nrog tus neeg muag khoom ntseeg siab kom ntseeg tauCov khoom lag luam zoo ib yam, kev tsim khoom zoo, thiab cov khoom siv txhim khu kev qha, ua PET preform ntau lawm tus nqi -zoo thiab technically robust.
