Rau cov khoom suav tsis txheeb, los ntawm cov khoom noj khoom haus thiab cov khoom noj tsiaj zoo rau cov tshuaj rhiab heev thiab cov tshuaj muaj zog, kev ncaj ncees ntawm cov ntsiab lus yog qhov tseem ceeb. Kev puas tsuaj los ntawm cov pa oxygen, noo noo, lossis lub teeb tuaj yeem ua rau lwj, tsis muaj zaub mov, hloov tsw, lossis txo qhov ua tau zoo. Peb lub MOPP/VMPET/PE sawv ntsug-cov qauv hauv hnab yog tsim tshwj xeeb los ua tus saib xyuas zoo rau cov ntsiab lus no, siv cov cuab yeej thaiv kev ruaj ntseg kom ntev lub neej txee thiab xyuas kom cov khoom ncav cuag cov neeg siv khoom raws li qhov xav tau, lub xeev zoo.
Lub hauv paus ntawm qhov kev tiv thaiv no yog VMPET (Nqus Metalized Polyethylene Terephthalate) txheej. Los ntawm cov txheej txheem nqus hlau ua kom zoo thiab tswj tau, cov txheej txheem ultra-thin aluminium yog muab tso rau hauv PET zaj duab xis. Qhov no ua rau muaj kev cuam tshuam tshwj xeeb tiv thaiv kev xa tawm oxygen (OTR). Piv txwv li, peb cov qauv VMPET cov yeeb yaj kiab ua tiav OTR qhov tseem ceeb tsawg dua 1.0 cc / m² / 24hrs, ua rau qeeb cov txheej txheem oxidation uas ua rau cov roj rancidity, staling hauv cov khoom ci, lossis tsw qab hauv kas fes thiab tshuaj yej. Tib txheej txheej metallized no ua raws li qhov ze ntawm -tag nrho cov teeb meem rau lub teeb, tshwj xeeb tshaj yog nyob rau hauv UV spectrum, uas tuaj yeem degrade photosensitive vitamins, hloov xim, thiab ua kom lwj.
Thaum VMPET ua tau zoo raws li cov pa roj thiab lub teeb teeb meem, MOPP txheej txheej muab thawj kab ntawm kev tiv thaiv tiv thaiv ya raws. Qhov no yog qhov tseem ceeb heev rau kev tswj xyuas qhov nkig ntawm cov khoom noj txom ncauj, qhov pub dawb - ntws ntawm cov hmoov, los yog tiv thaiv clumping hauv cov khoom hygroscopic. PE sealing txheej ua tiav lub hnab ntawv tiv thaiv los ntawm kev ua kom cov sealing hermetic uas kaw tawm cov kab mob sab nraud thiab xauv rau hauv cov ntxhiab tsw ntxhiab.
Peb ua pov thawj qhov kev ua tau zoo no los ntawm kev sim tshuaj ntsuam xyuas nruj, suav nrog cov txee nrawm nrawm- kev tshawb fawb txog lub neej uas sim ua lub hli khaws cia hauv cov xwm txheej tswj tau. Peb ntsuam xyuas lub zog foob, puncture resistance, thiab barrier zog nyob rau hauv txawv kub thiab av noo theem. Qhov kev tshawb fawb no mus rau kev xaiv cov khoom siv thiab kev lees paub muab cov npe nrog cov ntaub ntawv muaj txiaj ntsig thiab kev ntseeg siab tias lawv cov khoom raug tiv thaiv thoob plaws hauv lub ntiaj teb cov khoom lag luam, los ntawm kev sau kab mus rau cov neeg siv khoom kawg.