TPU / ABS cov nplooj ntawv sib xyaw ua ke zoo kawg nkaus ua ke nrog lub siab nruj thiab ruaj khov molding kev ua tau zoo ntawm ABS nrog kev hnav tsis kam, tiv thaiv- cov khoom plam thiab zoo heev toughness ntawm TPU. Lawv tau dav siv nyob rau hauv tsheb sab hauv qhov chaw, precision industrial tais, tiv thaiv accessories thiab lwm yam kev lag luam teb. Txawm li cas los xij, TPU thiab ABS sib txawv heev hauv qhov kub thiab txias thiab thermal expansion coefficient. Yog tsis muaj kev ua haujlwm zoo, blister molding yog qhov ua rau muaj qhov tsis xws luag xws li delamination, warping, nto pitting thiab pwm sticking. Yog li ntawd, kev tswj cov txheej txheem meej yog qhov tseem ceeb los xyuas kom muaj kev ruaj ntseg zoo thiab kev ncaj ncees ntawm cov khoom tiav.
Raw khoom pretreatment yog thawj kauj ruam kom tsis txhob molding tsis xws luag. TPU cov khoom nta muaj zog noo noo nqus. Cov ntawv ntub dej yuav ua rau npuas, ua kom dawb thiab interlayer delamination nyob rau hauv siab - kub molding. Ua ntej kev tsim khoom, tas li - kub kom qhuav yog qhov yuav tsum tau ua. Qhov kub kom qhuav yuav tsum tau teem rau ntawm 60-80℃nrog lub sijhawm ntawm 10 mus rau 14 teev kom tshem tawm cov dej hauv sab hauv. Tsis tas li ntawd, khaws daim ntawv saum npoo tsis muaj hmoov av, roj thiab impurities. Qhov chaw huv si tiv thaiv qhov tsis zoo ntawm qhov chaw thiab cov lamination tsis zoo ntawm cov khaubncaws sab nraud povtseg thaum lub hlwv tsim.
Kev tswj qhov kub thiab txias ua haujlwm yog qhov tseem ceeb ntawm TPU / ABS blister processing. Cov yam ntxwv softening tsis sib xws ntawm ob cov ntaub ntawv ua rau ib qho - kub cua sov ua tsis tau, uas yooj yim ua rau tsis txaus softening lossis dhau - softening ntawm ib txheej. Txais gradient cua sov los tswj cov txheej TPU nto ntawm 120-140℃thiab sab hauv ABS substrate ntawm 110-120 degree. Qhov no ua kom zoo ib yam softening ntawm tag nrho cov ntawv thiab tsis txhob warping thiab cracking tshwm sim los ntawm uneven thermal deformation. Lub caij no, preheat cov pwm rau 60-80℃kom txo qhov kub thiab txias, txo qhov kev ntxhov siab sab hauv thiab tiv thaiv kev sib xyaw txheej txheej.
Vacuum forming and demolding parameters yuav tsum tau tsom optimization rau cov yam ntxwv ntawm cov khoom. Tom qab daim ntawv yog softened, ncua lub tshuab nqus tsev adsorption rau 2 mus rau 3 vib nas this, thiab tuav lub nqus tsev kawm ntawv ntawm -0.085 rau -0.1 MPa. Qhov no ua rau tag nrho pwm haum thiab ua tiav cov khoom ntawm cov npoo thiab cov fab. Txij li TPU muaj kev sib txhuam ntawm qhov chaw siab thiab viscosity, pwm sticking thiab nto tearing feem ntau tshwm sim thaum demolding. Nws raug nquahu kom siv cov pwm aluminium nrog cov npoo du thiab huv si yam tsis muaj qhov txuas. Tsim nyog ua kom cov pwm demolding taper thiab txais kev pab cuam demolding ntsuas thaum tsim nyog los tiv thaiv TPU nto los ntawm kev puas tsuaj.
Cov txheej txheem txias thiab tom qab- cov txheej txheem ua tiav yog qhov tseem ceeb rau cov khoom tiav tiav. Txais cov cua txias txias tom qab molding es tsis txhob cua txias sai. Qhov kub thiab txias hloov yuav ua rau daim ntawv deformation thiab interlayer sib cais. Rau trimming, huab cua txiav yog nyiam dua li cov pa sawing thiab milling, uas tuaj yeem tshem tawm ntug burrs thiab lwm yam delamination. Kev siv nruj me ntsis ntawm cov txheej txheem saum toj no tuaj yeem ua kom muaj txiaj ntsig zoo ntawm TPU / ABS cov ntawv sib xyaw thiab tsim cov khoom zoo siab - cov khoom blister zoo nrog cov qauv ruaj khov thiab zoo li tsis zoo.
