Puas Yog PE Laminated Daim Ntawv Muaj Tshuaj Lom? Kev Tshawb Fawb Txog Cov Qauv Cai thiab Cov Lus Tseeb Txog Kev Tshawb Fawb
PE daim ntawv laminated, siv dav hauv kev ntim khoom noj thiab cov khoom siv txhua hnub, yeej ib txwm nyiam cov neeg siv khoom ntau txog nws txoj kev nyab xeeb, nrog rau lo lus nug tseem ceeb tsom mus rau “Puas yog PE Laminated Ntawv lom?”. Raws li cov qauv kev cai lij choj thoob ntiaj teb thiab hauv tebchaws thiab cov ntaub ntawv kuaj kev tshaj lij, cov lus teb yog meej: PE laminated daim ntawv uas ua tau raws li cov qauv kev ua raws cai tsis muaj teeb meem rau tib neeg lub cev nyob rau hauv cov xwm txheej siv ib txwm; kev pheej hmoo kev nyab xeeb tsuas yog muaj thaum cov khoom tsis ua raws li lossis siv rau hauv cov xwm txheej tsis tu ncua.
Lub hauv paus ntawm PE laminated ntawv yog los txheej ib txheej polyethylene (PE) rau ntawm lub hauv paus ntawv los ntawm cov txheej txheem kub-yaj lamination. Polyethylene nws tus kheej yog cov khoom siv inert nrog cov khoom siv tshuaj ruaj khov, uas tau lees paub los ntawm ntau lub koom haum thoob ntiaj teb tias yog cov khoom siv nyab xeeb rau kev sib cuag nrog zaub mov. Tuam Tshoj tus qauv hauv tebchaws GB / T 36392-2018 “Laminated Paper thiab Board rau Food Packaging” qhia meej meej tias tag nrho kev tsiv teb tsaws chaw ntawm PE laminated daim ntawv rau khoom nojkev sib cuag yuav tsum yog ≤10 mg/dm², cov ntsiab lus ntawm cov hlau hnyav ua los ntawm txhuas (Pb) yuav tsum yog ≤3 mg/kg, cadmium (Cd) ≤0.2 mg/kg, thiab tsis muaj cov khoom phom sij xws li cov khoom ci ntsa iab fluorescent yuav tsum raug kuaj pom. US FDA tswj hwm cov ntaub ntawv txheej PE rau kev sib cuag zaub mov los ntawm 21 CFR 177.1520, xav kom lawv cov ntsiab lus ntawm cov khoom tsiv teb tsaws chaw kom ua tau raws li qhov kev nyab xeeb.
Muaj ob yam tseem ceeb uas cuam tshuam rau kev nyab xeeb ntawm PE laminated ntawv. Ua ntej, kev ua raws li cov khoom: PE laminated ntawv tsim los ntawm cov chaw tsim khoom tsis raws cai yuav siv cov khib nyiab rov ua dua tshiab, cov khoom siv PE tsis zoo, lossis ntxiv cov yas txwv tsis pub siv xws li phthalates, uas ua rau muaj kev pheej hmoo ntawm kev tsiv teb tsaws chaw ntawm cov khoom phom sij. Qhov thib ob, cov xwm txheej siv: Lub ntsiab lus yaj ntawm PE yog kwv yees li 120-130 ℃. Thaum qhov kub ntawm kev pabcuam tshaj 110 ℃ (xws li cua sov ncaj qha hauv lub qhov cub microwave lossis sib cuag nrog cov nplaim taws qhib), lossis thaum sib cuag ntev nrog cov khoom noj roj kub siab, nws yuav ua rau kev tsiv teb tsaws chaw ntawm cov khoom phom sij sai dua. Cov ntaub ntawv tshawb fawb qhia tau hais tias qhov nce ntawm lub zog microwave thiab qhov kub thiab txias ua rau muaj kev tsiv teb tsaws chaw ntawm cov yas hauv PE laminated ntawv, nrog lub zog microwave muaj qhov cuam tshuam pom tseeb tshaj plaws, uas tuaj yeem ua rau muaj kev tsiv teb tsaws chaw ntau dua 20%.
Yuav kom siv tau zoo, cov neeg siv khoom thiab cov neeg yuav khoom yuav tsum tau ua tib zoo saib xyuas peb lub ntsiab lus: Ua ntej, xaiv cov khoom uas muaj daim ntawv pov thawj ua raws li txoj cai, xws li daim ntawv PE laminated uas tau dhau daim ntawv pov thawj FDA thiab ua tau raws li GB 4806 series cov qauv, thiab xyuas cov ntawv qhia kev xeem thiab daim ntawv pov thawj ua raws li txoj cai uas lub chaw tsim khoom muab. Qhov thib ob, ua raws li cov lus qhia siv: tsis txhob ua kom cov khoom noj kub hauv daim ntawv PE laminated hauv lub qhov cub microwave, thiab tsis txhob siv nws los tuav cov khoom noj kub siab tshaj 100 ℃. Thaum kawg, muab qhov tseem ceeb rau cov khoom uas muaj Nkauj xwb ntoo pulp cov ntaub ntawv hauv paus thiab cov txheej txheem lamination dej, uas tsis yog tsuas yog muaj kev nyab xeeb zoo dua tab sis kuj txo qis VOCs emissions thiab yog tus phooj ywg zoo rau ib puag ncig.
Ua ib lub tuam txhab muab kev daws teeb meem ntawv tshaj lij, Paperjoy’sCov khoom ntawv PE laminated siv cov khoom siv raw PE tshiab thiab cov ntaub ntawv ntoo pulp uas tau ntawv pov thawj los ntawm FSC, ua raws li cov txheej txheem tsim khoom huv si thoob plaws, dhau ntau daim ntawv pov thawj xws li FDA thiab ISO9001, thiab txhua pawg khoom muaj cov ntawv qhia kev xeem tiav kom ntseeg tau tias muaj kev nyab xeeb hauv kev ntim khoom noj, khoom noj khoom haus thiab lwm yam xwm txheej.
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