Yas composite zaj duab xis yog ib qho khoom siv ntim khoom siv rau kev ntim khoom retort-resistant. Retort thiab cua sov kom tsis muaj menyuam yog txheej txheem tseem ceeb rau ntim cov khoom noj uas kub-kub retort. Txawm li cas los xij, cov khoom siv lub cev ntawm cov yas sib xyaw ua ke yog qhov ua rau thermal lwj tom qab ua kom sov, ua rau cov khoom ntim tsis tsim nyog. Tsab ntawv xov xwm no txheeb xyuas cov teeb meem tshwm sim tom qab ua noj ntawm cov hnab ntim kub-kub, thiab qhia txog lawv txoj kev kuaj xyuas lub cev, vam tias yuav muaj qhov tseem ceeb rau kev tsim khoom tiag tiag.
High-temperature-resistant retort packing pouches yog ib daim ntawv ntim uas feem ntau siv rau cov nqaij, cov khoom soy thiab lwm yam khoom noj khoom haus npaj. Nws yog feem ntau lub tshuab nqus tsev ntim thiab tuaj yeem khaws cia rau hauv chav tsev kub tom qab ua kom sov thiab ua kom tsis muaj menyuam ntawm qhov kub siab (100 ~ 135 ° C). Retort-resistant ntim cov zaub mov yog yooj yim nqa, npaj noj tom qab qhib lub hnab, huv si thiab yooj yim, thiab tuaj yeem tswj tau qhov tsw ntawm cov zaub mov, yog li nws tau hlub los ntawm cov neeg siv khoom. Nyob ntawm cov txheej txheem kom tsis muaj menyuam thiab cov ntaub ntawv ntim khoom, lub txee lub neej ntawm cov khoom ntim cov khoom ntim khoom muaj peev xwm ntawm ib nrab xyoo mus rau ob xyoos.
Cov txheej txheem ntim khoom ntawm retort zaub mov yog lub hnab ntim khoom, ntim khoom, nqus tsev vacuuming, cua sov sealing, tshuaj xyuas, ua noj thiab cua sov kom tsis muaj menyuam, ziab thiab txias, thiab ntim khoom. Ua noj thiab cua sov kom tsis muaj menyuam yog cov txheej txheem tseem ceeb ntawm tag nrho cov txheej txheem. Txawm li cas los xij, thaum lub hnab ntim khoom ua los ntawm cov khoom siv polymer - cov yas, cov saw hlau molecular txav zuj zus tom qab ua kom sov, thiab cov khoom siv lub cev ntawm cov khoom muaj feem xyuam rau thermal attenuation. Tsab ntawv xov xwm no txheeb xyuas cov teeb meem tshwm sim tom qab ua noj ntawm cov hnab ntim khoom kub, thiab qhia txog lawv txoj kev ntsuas kev ua haujlwm ntawm lub cev.
1. Kev tshuaj xyuas cov teeb meem tshwm sim nrog retort-resistant ntim hnab
High-temperature retort zaub mov yog ntim thiab ces rhuab thiab sterilized ua ke nrog cov ntaub ntawv ntim. Txhawm rau kom ua tiav lub cev muaj zog thiab cov khoom thaiv zoo, cov khoom ntim retort-resistant yog ua los ntawm ntau yam khoom siv hauv paus. Cov khoom siv feem ntau suav nrog PA, PET, AL thiab CPP. Cov qauv siv feem ntau muaj ob txheej ntawm cov yeeb yaj kiab sib xyaw, nrog rau cov piv txwv hauv qab no (BOPA / CPP, PET / CPP), peb txheej txheej zaj duab xis (xws li PA / AL / CPP, PET / PA / CPP) thiab plaub txheej zaj duab xis. (xws li PET/PA/AL/CPP). Hauv kev tsim khoom tiag tiag, cov teeb meem zoo tshaj plaws yog wrinkles, lub hnab tawg, cua to thiab tsw qab ua noj:
1). Feem ntau muaj peb hom wrinkling nyob rau hauv lub hnab ntim khoom: kab rov tav los yog ntsug los yog irregular wrinkles ntawm lub ntim puag khoom; wrinkles thiab kab nrib pleb ntawm txhua txheej txheej thiab tsis zoo flatness; shrinkage ntawm cov khoom ntim hauv paus, thiab cov shrinkage ntawm cov txheej txheem sib xyaw thiab lwm cov txheej txheem sib cais, kab txaij. Lub hnab tawg tau muab faib ua ob hom: ncaj qha bursting thiab wrinkling thiab ces tawg.
2) Delamination yog hais txog qhov tshwm sim uas cov txheej txheem ntawm cov khoom ntim tau sib cais los ntawm ib leeg. Me me delamination yog manifested raws li kab txaij zoo li bulges nyob rau hauv lub stressed qhov chaw ntawm lub ntim, thiab tev lub zog yog txo, thiab txawm yuav maj mam torn sib nrug los ntawm txhais tes. Nyob rau hauv cov xwm txheej hnyav, cov txheej ntim khoom sib xyaw yog sib cais hauv thaj chaw loj tom qab ua noj. Yog tias delamination tshwm sim, kev sib koom ua ke ntawm lub cev muaj zog ntawm cov txheej txheem sib xyaw ntawm cov khoom ntim yuav ploj mus, thiab cov khoom siv lub cev thiab cov khoom thaiv yuav poob qis, ua rau nws tsis tuaj yeem ua tau raws li qhov yuav tsum tau ua ntawm txee lub neej, feem ntau ua rau poob ntau dua rau lub lag luam. .
3) Cov pa xau me me feem ntau muaj lub sijhawm incubation ntev thiab tsis yooj yim los kuaj xyuas thaum ua noj. Thaum lub sij hawm cov khoom ncig thiab lub sij hawm cia, lub tshuab nqus tsev kawm ntawv ntawm cov khoom txo qis thiab pom tseeb huab cua tshwm nyob rau hauv lub ntim. Yog li ntawd, qhov teeb meem zoo no feem ntau cuam tshuam nrog ntau cov khoom. cov khoom muaj kev cuam tshuam ntau dua. Qhov tshwm sim ntawm huab cua to yog ze ze rau qhov tsis muaj cua sov sealing thiab tsis zoo puncture tsis kam ntawm lub hnab retort.
4). Cov ntxhiab tsw tom qab ua noj kuj yog ib qho teeb meem zoo. Cov ntxhiab tsw ntxhiab uas tshwm sim tom qab ua noj yog cuam tshuam nrog cov kuab tshuaj ntau dhau hauv cov khoom ntim khoom lossis xaiv cov khoom siv tsis raug. Yog tias PE zaj duab xis yog siv los ua cov txheej txheej sab hauv ntawm cov hnab ua noj ua haus kub siab tshaj 120 °, PE zaj duab xis yog qhov muaj ntxhiab tsw ntawm qhov kub thiab txias. Yog li ntawd, RCPP feem ntau raug xaiv los ua txheej txheej hauv cov hnab ua noj ua haus kub.
2. Kev sim cov txheej txheem rau lub cev muaj zog ntawm retort-resistant ntim
Cov yam ntxwv ua rau cov teeb meem zoo ntawm retort-resistant ntim yog qhov nyuaj thiab koom nrog ntau yam xws li cov ntaub ntawv sib xyaw txheej, cov nplaum, inks, cov khoom sib xyaw thiab lub hnab ua cov txheej txheem tswj, thiab cov txheej txheem retort. Txhawm rau kom ntseeg tau tias ntim khoom zoo thiab lub neej txee rau khoom noj, nws yog ib qho tsim nyog yuav tsum ua cov kev sim ua noj ua haus ntawm cov khoom ntim.
Lub teb chaws tus qauv siv rau retort-resistant hnab ntim khoom yog GB / T10004-2008 "Plastic Composite Film for Packaging, Bag Dry Lamination, Extrusion Lamination", uas yog raws li JIS Z 1707-1997 "Cov Ntsiab Cai ntawm Yas Zaj Duab Xis rau Zaub Mov Ntim" Formulated los hloov GB / T 10004-1998 "Retort Resistant Composite Zaj duab xis thiab hnab" thiab GB / T10005-1998 "Biaxially Oriented Polypropylene Zaj duab xis / Tsawg ntom Polyethylene Composite Films thiab Hnab". GB / T 10004-2008 suav nrog ntau yam khoom siv lub cev thiab cov kuab tshuaj residue ntsuas rau retort-resistant ntim films thiab hnab, thiab xav kom cov hnab ntim retort-resistant raug kuaj rau high-temperature media resistance. Cov txheej txheem yog ua kom cov hnab ntim khoom tiv thaiv retort nrog 4% acetic acid, 1% sodium sulfide, 5% sodium chloride thiab zaub roj, tom qab ntawd tso tawm thiab kaw, cua sov thiab ua kom lub siab kub siab ntawm 121 ° C. 40 feeb, thiab txias thaum lub siab tseem tsis hloov. Tom qab ntawd nws cov tsos, tensile zog, elongation, tev quab yuam thiab kub sealing lub zog raug kuaj, thiab tus nqi poob yog siv los ntsuas nws. Cov mis yog raws li nram no:
R = (AB)/A × 100
Hauv cov qauv, R yog qhov poob qis (%) ntawm cov khoom kuaj, A yog tus nqi nruab nrab ntawm cov khoom kuaj ua ntej qhov ntsuas kub resistant nruab nrab; B yog qhov nruab nrab tus nqi ntawm cov khoom kuaj tom qab qhov ntsuas kub resistant nruab nrab. Cov kev xav tau ntawm kev ua tau zoo yog: "Tom qab qhov ntsuas kub dielectric tsis kam, cov khoom siv nrog kev pabcuam kub ntawm 80 ° C lossis siab dua yuav tsum tsis muaj delamination, kev puas tsuaj, pom tseeb deformation sab hauv lossis sab nraum lub hnab, thiab txo qis hauv kev quab yuam, rub- Tawm quab yuam, nominal strain thaum tawg, thiab tshav kub sealing zog. Tus nqi yuav tsum yog ≤30% ".
3. Kev ntsuam xyuas lub cev muaj zog ntawm cov hnab ntim khoom retort-resistant
Qhov kev sim tiag tiag ntawm lub tshuab tuaj yeem kuaj pom qhov ua tau zoo tag nrho ntawm cov khoom ntim retort-resistant. Txawm li cas los xij, txoj kev no tsis yog siv sijhawm ntev xwb, tab sis kuj txwv los ntawm kev npaj tsim khoom thiab cov lej ntawm cov kev xeem. Nws muaj kev ua haujlwm tsis zoo, khib nyiab loj, thiab tus nqi siab. Los ntawm qhov kev ntsuam xyuas retort kom pom lub cev muaj zog xws li tensile zog, tev lub zog, lub zog sealing ua ntej thiab tom qab retort, lub retort kuj zoo ntawm lub hnab retort tuaj yeem txiav txim siab. Kev xeem ua noj feem ntau siv ob hom khoom siv tiag tiag thiab cov khoom siv simulated. Kev sim ua noj uas siv cov ntsiab lus tseeb tuaj yeem nyob ze li qhov ua tau rau qhov xwm txheej tsim khoom tiag tiag thiab tuaj yeem tiv thaiv cov ntim tsis tsim nyog los ntawm kev nkag mus rau cov kab ntau lawm hauv cov khoom siv. Rau cov chaw tsim khoom ntim khoom, simulants yog siv los ntsuas qhov tsis kam ntawm cov khoom ntim khoom thaum lub sijhawm tsim khoom thiab ua ntej khaws cia. Kev ntsuas kev ua noj ua haus yog qhov ua tau zoo dua thiab ua haujlwm tau. Tus sau qhia txog lub cev kev ua tau zoo ntawm lub cev ntawm lub hnab ntim cov hnab ntim retort-resistant los ntawm kev sau cov khoom noj simulation kua los ntawm peb lub tuam txhab sib txawv thiab ua qhov kev sim ua kom sov thiab ua kom sov. Cov txheej txheem xeem yog raws li nram no:
1). Kev sim ua noj
Cov cuab yeej: Muaj kev nyab xeeb thiab ntse rov qab-siab kub ua noj lauj kaub, HST-H3 cua sov foob tester
Cov kauj ruam kuaj: Ua tib zoo muab 4% acetic acid rau hauv lub hnab retort rau ob feem peb ntawm qhov ntim. Ceev faj kom tsis txhob muaj kab mob sib kis, thiaj li tsis cuam tshuam rau lub sealing ceev. Tom qab sau, kaw lub hnab ua noj nrog HST-H3, thiab npaj tag nrho ntawm 12 cov qauv. Thaum sib khi, cov huab cua hauv lub hnab yuav tsum tau tso tseg kom ntau li ntau tau los tiv thaiv huab cua nthuav dav thaum ua noj los ntawm kev cuam tshuam cov txiaj ntsig ntawm kev xeem.
Muab cov qauv kaw rau hauv lub lauj kaub ua noj kom pib qhov kev sim. Teem lub sijhawm ua noj rau 121 ° C, lub sijhawm ua noj rau 40 feeb, chav 6 qauv, thiab boil 6 qauv. Thaum lub sij hawm ua noj ua haus, ua tib zoo saib xyuas cov kev hloov ntawm huab cua siab thiab qhov kub thiab txias hauv lub lauj kaub ua noj kom paub meej tias qhov kub thiab txias yog tswj tau nyob rau hauv qhov teeb tsa.
Tom qab kev sim ua tiav, txias rau hauv chav sov, tshem tawm thiab saib seb puas muaj lub hnab tawg, wrinkles, delamination, thiab lwm yam. Tom qab kev sim, qhov chaw ntawm 1 # thiab 2# cov qauv tau du tom qab ua noj thiab tsis muaj delamination. Qhov saum npoo ntawm 3 # qauv tsis zoo heev tom qab ua noj ua haus, thiab cov npoo tau hloov mus rau qhov sib txawv.
2). Kev sib piv ntawm tensile zog
Nqa cov hnab ntim khoom ua ntej thiab tom qab ua noj, txiav tawm 5 cov qauv duab plaub ntawm 15mm × 150mm nyob rau hauv cov kev taw qhia transverse thiab 150mm nyob rau hauv qhov kev taw qhia longitudinal, thiab kho lawv rau 4 teev nyob rau hauv ib puag ncig ntawm 23 ± 2 ℃ thiab 50 ± 10% RH. XLW (PC) ntse hluav taws xob tensile kuaj tshuab tau siv los kuaj lub zog tawg thiab elongation ntawm kev tawg nyob rau hauv cov xwm txheej ntawm 200mm / min.
3). Peel xeem
Raws li txoj kev A ntawm GB 8808-1988 "Peel Test Method for Mos Composite Plastic Materials", txiav ib tus qauv nrog qhov dav ntawm 15 ± 0.1mm thiab ntev ntawm 150mm. Siv 5 tus qauv rau txhua qhov hauv kab rov tav thiab ntsug. Ua ntej muab cov txheej txheem sib xyaw ua ke raws li qhov ntev ntawm cov qauv, thauj mus rau hauv XLW (PC) ntse hluav taws xob tensile kuaj tshuab, thiab kuaj lub tev tawm ntawm 300mm / min.
4). Thaum tshav kub kub sealing zog xeem
Raws li GB / T 2358-1998 "Kev Ntsuas Kev Ntsuas Kub Sealing Strength ntawm Yas Zaj Duab Xis Ntim Hnab", txiav 15mm dav qauv ntawm lub tshav kub sealing ib feem ntawm cov qauv, qhib nws ntawm 180 °, thiab clamp ob kawg ntawm cov qauv ntawm lub XLW (PC) ntse Nyob rau hauv lub tshuab hluav taws xob tensile kuaj, qhov siab tshaj plaws load yog kuaj ntawm qhov ceev ntawm 300mm / min, thiab poob Tus nqi yog xam los ntawm kev siv lub siab kub tsis kam dielectric formula hauv GB / T 10004-2008.
Cov ntsiab lus
Retort-resistant ntim cov khoom noj tau nce siab los ntawm cov neeg siv khoom vim lawv txoj kev yooj yim ntawm kev noj thiab khaws cia. Txhawm rau kom muaj txiaj ntsig zoo ntawm cov ntsiab lus thiab tiv thaiv cov zaub mov tsis zoo, txhua kauj ruam ntawm cov txheej txheem tsim khoom ntawm lub hnab ntim khoom yuav tsum tau saib xyuas nruj thiab tswj xyuas kom tsim nyog.
1. Lub hnab ntim khoom noj khoom haus kub yuav tsum tau ua los ntawm cov khoom tsim nyog raws li cov ntsiab lus thiab cov txheej txheem tsim khoom. Piv txwv li, CPP feem ntau raug xaiv los ua cov txheej txheej sab hauv ntawm cov hnab ntim khoom noj uas muaj kub-resistant; Thaum lub hnab ntim khoom uas muaj AL txheej yog siv los ntim cov kua qaub thiab alkaline, ib txheej PA sib xyaw yuav tsum tau ntxiv ntawm AL thiab CPP kom tiv thaiv cov kua qaub thiab alkali permeability; Txhua txheej txheej Cov cua sov shrinkability yuav tsum zoo ib yam lossis zoo sib xws kom tsis txhob muaj kev sib tsoo lossis txawm tias delamination ntawm cov khoom tom qab ua noj vim qhov tsis zoo ntawm cov khoom cua sov shrinkage.
2. Tsim nyog tswj cov txheej txheem sib xyaw. Cov hnab ntim kub resistant retort feem ntau yog siv cov txheej txheem qhuav qhuav. Nyob rau hauv cov txheej txheem ntawm retort zaj duab xis, nws yog ib qho tsim nyog los xaiv cov txheej txheem nplaum tsim nyog thiab cov txheej txheem gluing zoo, thiab tsim nyog tswj cov txheej txheem kho kom ntseeg tau tias tus neeg sawv cev tseem ceeb ntawm cov nplaum thiab cov tshuaj tua kab mob tshwm sim tag nrho.
3. High-kub nruab nrab tsis kam yog cov txheej txheem hnyav tshaj plaws nyob rau hauv cov txheej txheem ntim ntawm cov hnab ntim kub-kub retort. Txhawm rau kom txo tau qhov tshwm sim ntawm cov teeb meem zoo, cov hnab ntim khoom kub siab yuav tsum tau rov qab kuaj thiab tshuaj xyuas raws li cov khoom siv tiag tiag ua ntej siv thiab thaum lub sijhawm tsim khoom. Xyuas seb lub pob tom qab ua noj puas yog tiaj tus, wrinkled, blistered, deformed, seb puas muaj delamination lossis to, seb qhov poob qis ntawm lub cev (lub zog tensile, tev lub zog, lub zog sealing) ua tau raws li qhov yuav tsum tau ua, thiab lwm yam.
Post lub sij hawm: Jan-18-2024
