]N'ihi nri anụ ụlọ ọhụrụ ole na ole na-abanye n'ahịa, nri anụ ụlọ na-abụkarị otu n'ime ụlọ ọrụ kachasị asọmpi.
Ụzọ ndị a pụrụ ịdabere na ya na-achọwanyewanye iji hụ na ịgbatị ndụ nchekwa nke nri anụ ụlọ.
Dị ka nri mmadụ, nri anụ ụlọ ga-ahụrịrị na ọ na-ezute ndụ na ahụike nke anụ ụlọ.
Ya mere, nri anụ ụlọ kwesịrị ịnọgide na-edozi nri dị mkpa na ekpomeekpo mbụ n'ime nnyefe, nlekọta na ndụ nchekwa.
A na-eji ihe nchekwa eme ihe kemgbe ọtụtụ narị afọ.
Ha nwere ike ịbụ.
Ihe nchekwa microbial nke na-egbochi uto nke nje bacteria na fungi, ma ọ bụ antioxidants na-egbochi oxidation nke ihe oriri, dị ka ikuku oxygen. Mgbochi nkịtị
Ihe nchekwa microbial gụnyere C- calcium, sodium nitrate, nitrite, na sulfuric acid (
Sulfur dioxide, sodium bisultan, potassium bisultan, wdg).
Na disodium.
Antioxidants gụnyere BHA na BHT.
A na-ekewa ihe nchekwa nri n'ime: ihe nchekwa eke dị ka nnu, shuga, mmanya mmanya, sirop, ngwa nri, mmanụ aṅụ, mmanụ oriri, wdg;
Na ihe nchekwa kemịkalụ dị ka sodium ma ọ bụ potassium, sulfate, glutamate, gan griiz, wdg.
Otú ọ dị, mmetụta ndị e ji eme ihe na-emepụta ihe na nri anụ ụlọ dị njọ karịa ihe nchekwa eke.
N'ihe gbasara ụdị na ọnụọgụ agbakwunyere na nri anụ ụlọ, a na-enwewanye ụkpụrụ iwu siri ike.
Ọ na-esiwanye ike maka ndị na-emepụta ihe ịdabere na ihe nchekwa iji hụ na ndụ adịghị.
Iji ihe mgbochi dị elu dị ka nkwakọ ngwaahịa anụ ụlọ na-enye aka nke ukwuu iji hụ na ịgbatị ndụ nri anụ ụlọ.
A maara nke ọma na uto nke microorganisms chọrọ ebe kwesịrị ekwesị.
Okpomọkụ, oxygen na mmiri bụ ihe atọ kachasị mkpa.
Oxygen bụ isi ihe na-akpata ire ere nri.
Obere ikuku oxygen dị na ngwugwu nri, obere ihe oriri ga-ere ere.
Ọ bụ ezie na mmiri na-enye gburugburu ebe obibi maka microorganisms, ọ pụkwara ime ka mbelata abụba ngwa ngwa;
Mee ka nri anụ ụlọ dị mkpụmkpụ.
N'oge ndụ nchekwa nke nri anụ ụlọ, ikuku oxygen na ikuku mmiri dị na ngwugwu kwesịrị ka ejupụta tupu ya.
Permeability bụ ikike iji tụọ gas nke ihe mgbochi nyere ikike (
O2, N2, CO2, uzuoku mmiri, wdg)
Banye n'ime ya n'otu oge.
Ọ na-adaberekarị na ụdị, nrụgide, okpomọkụ na ọkpụrụkpụ nke ihe.
Na Labthink lab, anyị nwalere, nyochaa na OPP / PE / CPP, oxygen nnyefe ọnụego na mmiri vapo ọnụego maka 7 anụ ụlọ nkwakọ ngwaahịa PET, Pet CPP, Bopp/CPP, BOPET/PE/ VMPET/dlp.
Ọnụ ọgụgụ dị elu nke ikuku oxygen pụtara na ihe ikuku oxygen na-ebelata;
Ọnụ ọgụgụ dị elu nke ikuku mmiri na-ebufe ihe pụtara na ikuku mmiri nke ihe onwunwe dị ala.
Nnwale nnyefe oxygen na-anabata sistemu nnwale nnabata oxygen Labthink OX2/230, usoro nrụgide nha anya.
Tinye sample na a ọkọlọtọ gburugburu ebe obibi tupu ule (23± 2℃, 50% RH)
Maka awa 48, nguzo ikuku n'elu ihe nlele.
Nnwale nnyefe ikuku mmiri na-eji nyocha ọnụego nnyefe mmiri Labthink/030 yana usoro iko ọdịnala.
Nsonaazụ ule OTR na WVTR zuru oke nke ihe nkwakọ ngwaahịa 7 ndị a bụ ndị a: nsonaazụ nnwale OTR (ml/m2 / ụbọchị) WVTR (g/m2/24h) PET/CPP 0. 895 0.
667 BOPP/CPP 601. 725 3. 061 PET 109. 767 25.
BOPET/PE 85 163. 055 4.
632 OPP/PE/CPP 716. 226 2.
214 BOPET/VMPET/hdpe 0. 149 0. 474 Aluminom-plastic 0. 282 0.
187 Tebụl 1 site na nyocha nke nsonaazụ ule nke ihe nkwakọ ngwaahịa 7 ndị a, enwere ike ịchọta data nnwale nke permeability nke nkwakọ nri nri Pet, na anyị nwere ike ịchọpụta na ihe dị iche iche laminated ga-enwe ọdịiche dị ukwuu na ikuku oxygen.
Site na tebụl 1, aluminum-
Ọnụ ego nnyefe oxygen maka ihe plastik, BOPET/VMPET/dlp, PET/CPP dị obere.
Dị ka nyocha anyị siri kwuo, nri anụ ụlọ na ngwugwu a na-enwekarịkwa ogologo ndụ.
Ihe nkiri laminated nwere arụmọrụ dị mma n'igbochi vepo mmiri.
Rụtụ aka na foto dị n'okpuru ebe a, PET nwere ọnụego nnyefe mmiri dị elu, nke pụtara na ihe mgbochi mmiri ya adịghị arụ ọrụ nke ọma na ọ dịghị mma maka nkwakọ nri PET n'ihi na ọ ga-ebelata ndụ nchekwa nke nri PET.
Ndị na-emepụta nri anụ ụlọ nwere ike iji ihe mgbochi dị elu karịa ihe nchekwa karịa iji gbatịkwuo ndụ nri anụ ụlọ.
Anyị na-akwado plastik laminated, aluminum-
A na-akwakọba ihe plastik na ígwè dị ka nri anụ ụlọ n'ihi na ha niile nwere ezigbo ihe mgbochi na ikuku oxygen na mmiri.
Na mgbakwunye na ịtụle ikuku oxygen na mmiri vapor permeability nke ihe onwunwe, anyị kwesịkwara ịma na gburugburu ebe obibi nwere mmetụta ụfọdụ na ihe ndị a nke ihe onwunwe.
Dị ka EVOH na PA, ha na-enwe mmetụta nke iru mmiri.
N'ebe okpomọkụ dị n'ime ụlọ na iru mmiri dị ntakịrị, ha abụọ na-enwe mmetụta dị mma na-egbochi ikuku mmiri, ebe ikuku mmiri ha na-ebelata na gburugburu oke iru mmiri.
Ya mere, EVOH na PA adịghị mma maka nkwakọ ngwaahịa ma ọ bụrụ na enwere oke iru mmiri n'oge njem na nlekọta anụ ụlọ.
