Cov qauv kev lag luam rau cov tswv rolls feem ntau yog tsim nyob ib ncig ntawm cov khoom xws li cov khoom muaj pes tsawg leeg, qhov loj me, cov khoom siv lub cev, qhov pom kev zoo, thiab kev tswj cov txheej txheem tsim kom muaj kev ruaj ntseg thaum lub sij hawm tom qab slitting thiab siv tiag tiag. Hauv kev lag luam stretch films, master rolls feem ntau yog tsim los siv linear low -density polyethylene (LLDPE) raws li cov khoom siv raw, ua tau raws li qhov yuav tsum tau muaj rau tensile zog, toughness, thiab nws tus kheej- adhesion.
Specification Standards
Master rolls feem ntau xav tau kom meej meej cov kev txwv, nrog rau qhov dav, thickness, yob txoj kab uas hla, ntawv core specifications, thiab qhov hnyav. Thaum cov tuam txhab tsim tshwj xeeb qhov ntev raws li lawv cov cuab yeej muaj peev xwm thiab cov neeg siv khoom xav tau, cov kev xav tau dav dav suav nrog cov yeeb yaj kiab tuab, qhov dav dav nyob rau hauv qhov kev txwv tsim nyog, thiab kev ua kom zoo nkauj zoo nkauj - tsis pub muaj teeb meem xws li xoob winding lossis telescoping - kom ntseeg tau tias kev ua haujlwm zoo tom qab slitting.
Performance Indicators
Master rolls yuav tsum muaj lub zog tensile zoo, elongation ntawm tawg, puncture tsis kam, thiab elastic rov qab. Cov zaj duab xis saum npoo yuav tsum muaj qhov sib xws ntawm tus kheej - adhesion, ua kom tiav cov yeeb yaj kiab tiav kom ruaj ntseg zoo. Tsis tas li ntawd, cov khoom xws li pob tshab, haze, kev sib txhuam cov yam ntxwv, thiab thickness uniformity raug kuaj xyuas kom cov khoom ua tau raws li qhov xav tau ntawm ntau daim ntawv thov ntim.
Kev Tswj Xyuas Zoo
Reputable master yob manufacturers feem ntau ua ntau lawm thiab kuaj raws li cov qauv kev lag luam yas yas, siv nruj tswj cov khoom siv raw, cov txheej txheem ntau lawm, thiab cov khoom tiav. Nrog kev nce ib puag ncig cov qauv, kev lag luam tau tsom mus rau kev siv cov khoom siv rov ua dua tshiab, zaj duab xis-thinning technologies, thiab eco- cov txheej txheem tsim khoom zoo; yav tom ntej master yob cov khoom yuav muab ntau dua qhov tseem ceeb ntawm kev ua haujlwm siab, kev siv nyiaj tsawg, thiab kev ruaj ntseg ib puag ncig.