PE (Polyethylene) Zaj duab xis tsis tuaj yeem tuav cov khoom no

PE yog ib qho ntawm cov khoom siv ntau tshaj plaws hauv ntim yas. Nws muaj kev tiv thaiv zoo noo noo thiab huab cua permeability, thiab yog siv dav hauv ntim khoom noj. Tab sis qee cov khoom siv tsis haum rau kev siv PE zaj duab xis, hnub no los piav qhia rau koj.

 

1, zaub roj kib zaub mov lossis zaub mov muaj roj zaub

 

PE (polyethylene) yas zaj duab xis nyob rau hauv cov txheej txheem tiag tiag ntawm kev kos duab lossis tshuab, txhawm rau txhim kho lossis ua tiav cov yeeb yaj kiab, kev kub siab polyethylene, tsis tshua muaj siab polyethylene thiab linear polyethylene feem ntau yog siv hauv kev faib ua feem. Cov yeeb yaj kiab muaj npe tom qab uas cov khoom muaj feem ntau tshaj plaws. Piv txwv li, mis nyuj ntim zaj duab xis muaj siab polyethylene muaj pes tsawg leeg, hu ua high pressure polyethylene film. Yogurt, yooj yim lub hnab ntim zaj duab xis uas muaj tsawg-siab polyethylene, nws yog hu ua low-pressure polyethylene yas zaj duab xis.

 

Txawm hais tias PE (polyethylene) daim nyias nyias nyias permeability zoo (pob yog khaws cov txiv hmab txiv ntoo, zaub, dej thiab cov pa roj carbon dioxide), tab sis, tom qab kev sib cuag nrog cov roj zaub, PE (polyethylene) zaj duab xis yuav permeate, o, discoloration, xws li cov ntim khoom noj. Cov roj zaub, tsis tsuas yog tuaj yeem ua rau lub neej ntev ntawm cov khoom noj, thiab kev cuam tshuam ntev rau cov roj zaub, Cov "naphthalene" hauv PE (polyethylene) zaj duab xis yuav precipitate rau hauv cov roj zaub, muaj teeb meem rau tib neeg noj qab haus huv, yog li PE (polyethylene) zaj duab xis yuav tsum tsis txhob siv rau pob khoom kib thiab zaub mov uas muaj roj zaub, kuj yuav tsum tsis txhob muab ntim nrog roj melon noob, qhuav txiv hmab txiv ntoo noob, txiv ntseej. noob thiab lwm yam khoom noj.

 

2. Ntim mis

 

Co-extruded PE (polyethylene) yas zaj duab xis ntim, tam sim no kev lag luam nrov ntim ntim, cov khoom ntim mis nyuj, kua ntses, kua txiv hmab txiv ntoo ntim yog ib qho kev sib koom ua ke yas zaj duab xis ntim. Transparent non-printing lub tshuab nqus tsev los yog lub hnab ntim khoom noj, kuj co-extruded yas zaj duab xis ntim. Kev ntim cov mis nyuj tam sim no, txawm tias siv cov xim dawb hauv cov xim dub thiab dawb co-extruded yas zaj duab xis, kom ntev lub sijhawm lav. Tab sis yog tias kev siv peb txheej ntawm co-extruded yas zaj duab xis, vim tsis muaj txheej txheej thaiv, thiab tsis tshua muaj peev xwm ncav cuag qhov zoo ntawm lub ntim cim lub sijhawm.

 

Nrog EVOH (ethylene / vinyl cawv copolymer) barrier txheej ntawm tsib txheej ntawm co-extruded thiab coated PVA (polyvinyl cawv) barrier txheej ntawm yas zaj duab xis, tuaj yeem txuas lub neej zoo tab sis tus nqi siab dua. Hauv kev ua lag luam niaj hnub no, qhov twg tsuas yog kev sib tw nqi xwb, qee lub tuam txhab siv ob lossis peb txheej ntawm co-extruded dub thiab dawb yas zaj duab xis thiab PE zaj duab xis, uas yog cov cim coated nrog cov khoom thaiv, ntim cov mis nyuj, cov khoom noj siv mis, kua ntses, thiab vinegar. Tom qab ntawd sib tov nrog cov khoom siv dub ntawm PE (polyethylene) zaj duab xis ncaj qha kev sib cuag nrog cov mis nyuj, cov khoom siv mis nyuj thiab kua ntses, vinegar, ces inert carbon dub pigment yuav infiltrate ( ntim yuav kis tau). Yog li cov cim coated nrog barrier khoom yas zaj duab xis, tuaj yeem tiv nrog kev kuaj xyuas thiab kev sim, tab sis tsis tuaj yeem ua lub luag haujlwm ntawm kev thaiv, kuj tsis tuaj yeem lav lub txee lub neej ntawm cov khoom.

 

Tam sim no nyob rau hauv kev ua lag luam ntau ntawm PE (polyethylene) yooj yim lub hnab thiab txawm ntim ntim hnab hauv tes yog chim siab, tab sis ntau lub hnab manufacturers kom txo nqi, ntxiv ntau cov khoom filling, lub pob tshab ntawm lub hnab, qhib kev sib deev, qis zog, tsw. , txawm tias cov luam ntawv ntawm lub hnab ntawm kev tiv thaiv ib puag ncig thiab kev nyab xeeb khoom noj thiab cov lus, tab sis qhov tseeb tsis siv cov ntaub ntawv biodegradable, Tsis tas li ntawd tsis siv ib puag ncig number case printing, tsis tsuas yog nce nqi ntau lawm, tab sis kuj nce cov kuab tshuaj residue, kev nyab xeeb yog kuj muaj kev txhawj xeeb.