TPU yog dab tsi?
TPU yog ib hom polyurethane, ib qho polymer uas muaj cov organic sib txuas los ntawm urethane txuas. Nyob rau theem molecular, TPU yog segmented block copolymer, nrog rau ob ntu uas muab elasticity, thiab ntu nyuaj rau lub zog thiab thermal stability. Thaum extruded rau hauv zaj duab xis, cov qauv tshuaj tshwj xeeb ntawm TPU tso cai rau ob qho tib si rigidity thiab saj zawg zog, ua rau ob qho tib si durability thiab printability ntawm TPU films.
Adhesion Properties ntawm TPU Film
Lub zog saum npoo ntawm cov ntawv luam tawm TPU yog qhov tsim nyog rau kev ua kom zoo. Qhov no txhais tau tias cov yeeb yaj kiab tuaj yeem yooj yim wetted los ntawm inks, kom ntseeg tau tias tus number case kis tusyees thoob plaws qhov chaw. TPU films kuj muaj ib tug natural affinity rau tej inks vim lawv cov tshuaj muaj pes tsawg leeg. Qhov no tsim kev sib raug zoo ntawm tus cwj mem thiab zaj duab xis substrate. Txhawm rau txhim kho adhesion ntxiv, TPU cov yeeb yaj kiab tuaj yeem raug kho saum npoo zoo li corona lossis plasma kho kom lawv lub zog saum npoo thiab txhim kho cov kua nplaum sib txuas.
Printability Considerations ntawm TPU Films
Yooj yim luam tawm, TPU zaj duab xis yog sib xws nrog ntau yam inks nrog rau cov kuab tshuaj raws li, UV-kho tau, thiab latex inks. Qhov kev ua tau zoo no txhais tau tias cov tshuab luam ntawv tuaj yeem siv TPU zaj duab xis rau cov tshuab luam ntawv sib txawv thiab kev siv. Lub ntsej muag du thiab zoo ib yam ntawm TPU zaj duab xis kuj tseem txhawb nqa cov cwj mem zoo ib yam, ua rau cov ntawv luam tawm zoo, cov xim zoo nkauj, thiab cov ntsiab lus ntse. Thaum kawg, vim tias cov yam ntxwv tswj kev nqus ntawm TPU zaj duab xis tso cai rau tus number case kom qhuav sai yam tsis muaj los ntshav, qhov kawg tso tawm muab cov txiaj ntsig zoo thiab nkig.
Mechanical Properties ntawm TPU Films
Qhov yooj yim thiab stretchability ntawm TPU zaj duab xis ua rau lawv zoo tagnrho rau cov ntawv thov uas yuav tsum tau cov ntaub ntawv luam tawm kom haum rau qhov chaw nkhaus los yog ua siab ntev stretching yam tsis muaj cracking. Resistant rau abrasion, tshuaj, thiab cov kuab tshuaj, luam tawm ntawm TPU zaj duab xis tuav lawv cov kev ncaj ncees thiab zoo li lub sij hawm txawm nyob rau hauv huab mob. TPU films tuaj yeem tiv taus qhov kub thiab txias yam tsis muaj deforming. Qhov no yog qhov tseem ceeb rau cov txheej txheem luam ntawv uas muaj cua sov, xws li thermal hloov, lossis thaum siv cov cua sov los kho cov inks.
TPU Films thiab Environmental Factors
TPU films muab lub zog thiab ruaj khov, tswj lawv qhov zoo txawm tias nyob rau hauv qhov hnyav tshaj ntawm ib puag ncig. TPU films muaj UV tiv thaiv, uas pab tiv thaiv cov xim luam tawm los ntawm fading lossis yellowing thaum raug tshav ntuj. TPU films kuj yog dej resistant, uas xyuas kom meej tias cov prints tsis cuam tshuam los ntawm noo noo los yog av noo.
Kev tshawb fawb tom qab luam tawm ntawm TPU zaj duab xis yog hauv paus hauv nws cov tshuaj lom neeg muaj pes tsawg leeg, cov khoom nto, thiab cov yam ntxwv ntawm cov khoom siv. TPU cov yeeb yaj kiab muab cov tshuab luam ntawv lag luam muaj peev xwm tsim cov ntawv luam tawm ruaj khov, zoo tshaj plaws uas tuaj yeem tiv taus qhov kev xav tau ntawm ntau yam kev lag luam daim duab siv, los ntawm sab nraum zoov kos npe mus rau cov ntaub ntawv hnav. Kev ua tau zoo thiab kev ua tau zoo ntawm TPU cov yeeb yaj kiab ua rau lawv nyiam cov khoom siv rau cov tshuab luam ntawv nrhiav kom xa cov khoom zoo tshaj plaws rau lawv cov neeg siv khoom.