Cov khoom noj khov yog hais txog cov khoom noj uas tsim nyog cov khoom noj khoom haus zoo uas tau ua tiav zoo, khov ntawm qhov kub ntawm -30 ° C, thiab tom qab ntawd khaws cia thiab xa mus rau -18 ° C lossis qis dua tom qab ntim. Vim yog kev siv cov khoom siv txias txias txias khaws cia thoob plaws tag nrho cov txheej txheem, cov khoom noj khov khov muaj cov yam ntxwv ntawm lub neej txee ntev, tsis tuaj yeem ploj mus, thiab siv tau yooj yim, tab sis nws kuj ua rau ntau dua.nyuajgesthiab cov kev xav tau siab dua rau cov khoom ntim khoom.
Cov khoom ntim khoom noj khoom haus khov
Tam sim no, qhov sib txawvkhov zaub mov ntim hnabHauv kev lag luam feem ntau siv cov khoom siv hauv qab no:
1. PET/PE
Cov qauv no feem ntau tshwm sim hauv cov ntim khoom noj ceev ceev. Nws muaj cov khoom zoo noo noo-pov thawj, txias-resistant, tsis tshua muaj kub kub sealing zog thiab tus nqi qis.
2. BOPP/PE, BOPP/CPP
Cov qauv no yog cov dej-pov thawj, txias-resistant, muaj zog tensile siab nyob rau hauv qis-kub kub sealing, thiab yog tus nqi pheej yig. Ntawm lawv, cov tsos thiab kev xav ntawm lub hnab ntim khoom nrog BOPP / PE qauv zoo dua li cov qauv PET / PE, uas tuaj yeem txhim kho cov khoom zoo.
3. PET/VMPET/CPE, BOPP/VMPET/CPE
Vim tias muaj cov txheej txheem aluminium plating, hom qauv no muaj qhov zoo nkauj nto luam ntawv, tab sis nws qhov kub thiab txias sealing kev ua tau zoo me ntsis tsis zoo thiab tus nqi siab dua, yog li nws qhov kev siv tus nqi kuj tsawg.
4. NY/PE, PET/NY/LLDPE, PET/NY/AL/PE, NY/PE
Ntim nrog hom qauv no tiv taus khov thiab cuam tshuam. Vim lub xub ntiag ntawm NY txheej, nws cov puncture kuj zoo heev, tab sis tus nqi kuj siab heev. Nws feem ntau yog siv rau ntim cov khoom angular lossis hnyav dua.
Tsis tas li ntawd, tseem muaj ib lub hnab PE yooj yooj yim, uas feem ntau yog siv los ua ib lub hnab ntim sab nraud rau zaub thiab cov khoom noj khov yooj yim.
Ntxiv nrog rau cov hnab ntim khoom, qee cov khoom noj khov yuav tsum tau siv cov tais blister. Cov khoom siv ntau tshaj plaws yog PP. Khoom noj khoom haus-qib PP yog kev tu cev ntau dua thiab tuaj yeem siv rau qhov kub qis ntawm -30 ° C. Kuj tseem muaj PET thiab lwm yam khoom siv. Raws li kev thauj mus los dav dav, corrugated cartons yog thawj yam uas yuav tsum tau txiav txim siab rau cov khoom ntim khoom noj khov vim lawv qhov kev poob siab, cov khoom tiv thaiv siab thiab cov nqi zoo.
Cov qauv ntsuas rau kev ntim khoom noj khov
Cov khoom tsim nyog yuav tsum muaj kev ntim khoom tsim nyog. Ntxiv nrog rau kev sim cov khoom nws tus kheej, kev kuaj cov khoom yuav tsum tau kuaj lub ntim. Tsuas yog tom qab xeem dhau qhov kev xeem nws tuaj yeem nkag mus rau hauv kev ncig. cov
Tam sim no, tsis muaj cov qauv tshwj xeeb hauv tebchaws rau kev sim cov khoom ntim khoom noj khov. Cov kws tshaj lij kev lag luam tau ua haujlwm nrog cov chaw tsim khoom noj khoom haus khov los txhawb kev tsim cov qauv kev lag luam. Yog li ntawd, thaum yuav khoom ntim, cov chaw tsim khoom noj khoom haus khov yuav tsum ua tau raws li cov qauv hauv lub tebchaws rau cov khoom ntim khoom.
Piv txwv li:
GB 9685-2008 "Cov qauv kev tu cev rau kev siv cov khoom siv ntxiv rau cov thawv ntim khoom noj thiab cov khoom ntim" qhia txog cov qauv kev nyiam huv rau cov khoom siv ntxiv rau hauv cov thawv ntim khoom noj thiab cov khoom ntim khoom;
GB/T 10004-2008 "Plastic Composite Film for Packaging, Dry Lamination for Bags, and Extrusion Lamination" qhia cov ntaub ntawv sib xyaw, hnab, thiab cov yas sib xyaw ua yeeb yaj kiab ua los ntawm cov lamination qhuav thiab co-extrusion lamination txheej txheem uas tsis muaj ntawv hauv paus thiab txhuas. ntawv ci. , cov tsos thiab lub cev ntsuas ntawm lub hnab, thiab teev cov nqi ntawm cov residual hnyav nyob rau hauv lub hnab ntim khoom thiab zaj duab xis;
GB 9688-1988 "Hygienic Standard for Polypropylene Moulded Products for Food Packaging" stipulates the physical and chemical indicators of PP molded packaging for food, uas tuaj yeem siv los ua lub hauv paus rau kev tsim cov qauv rau PP blister tais rau cov khoom noj khov;
GB / T 4857.3-4 thiab GB / T 6545-1998 "Txoj hauv kev rau kev txiav txim siab tawg lub zog ntawm corrugated cardboard" feem muab cov kev xav tau rau stacking zog thiab tawg lub zog ntawm corrugated cardboard thawv.
Tsis tas li ntawd, hauv kev ua haujlwm tiag tiag, cov khw muag khoom noj khov yuav kuj tsim qee cov qauv kev lag luam uas haum rau lawv tus kheej raws li cov kev xav tau tiag tiag, xws li kev xav tau ntau rau cov tais blister, ua npuas ncauj thiab lwm yam khoom pwm.
Ob qhov teeb meem loj tsis tuaj yeem tsis quav ntsej
1. cov khoom noj qhuav noj, "kub kub" tshwm sim
Frozen cia tuaj yeem txwv txoj kev loj hlob thiab kev loj hlob ntawm cov kab mob thiab txo tus nqi ntawm cov zaub mov lwj. Txawm li cas los xij, rau qee cov txheej txheem khov, kev siv qhuav thiab oxidation ntawm cov zaub mov yuav ua rau hnyav dua nrog rau ncua sij hawm khov.
Nyob rau hauv lub freezer, qhov sib faib ntawm qhov kub thiab txias thiab dej vapor ib nrab siab muaj xws li: cov zaub mov nto> ib puag ncig cua> txias. Ntawm qhov tod tes, qhov no yog vim qhov kub ntawm cov zaub mov saum npoo yog pauv mus rau cov huab cua ib puag ncig, thiab qhov kub thiab txias yog ntxiv txo; Ntawm qhov tod tes, qhov sib txawv ntawm qhov sib txawv ntawm cov dej vapor tam sim no hauv cov khoom noj khoom haus thiab cov huab cua ib puag ncig ua rau dej, dej khov siv lead ua evaporation thiab sublimation rau hauv dej vapor rau hauv huab cua.
Txog tam sim no, cov huab cua uas muaj dej vapor ntau txo nws qhov ceev thiab txav mus rau lub tub yees. Ntawm qhov kub ntawm qhov txias txias, cov dej vapor hu rau saum npoo ntawm qhov txias thiab condenses rau hauv Frost kom muab nws, thiab huab cua ceev nce, yog li nws tog thiab ua rau kev sib cuag nrog cov zaub mov dua. Cov txheej txheem no yuav rov ua dua, kev ncig, cov dej ntawm cov khoom noj tsis tu ncua, qhov hnyav txo, qhov tshwm sim no yog "qhuav noj". Nyob rau hauv tus txheej txheem ntawm tas mus li qhuav qhuav tshwm sim, lub nto ntawm cov zaub mov yuav maj mam ua ntxeem tau cov ntaub so ntswg, ua rau cov cheeb tsam sib cuag nrog oxygen, accelerate lub oxidation ntawm cov zaub mov muaj roj, pigment, nto browning, protein denaturation, qhov tshwm sim no yog "kub kub".
Vim tias qhov hloov pauv ntawm cov dej vapor thiab cov tshuaj tiv thaiv oxidation ntawm cov pa oxygen hauv huab cua yog qhov tseem ceeb ntawm qhov tshwm sim saum toj no, yog li kev cuam tshuam ntawm cov khoom noj khov thiab lub ntiaj teb sab nraud, cov khoom ntim yas siv rau hauv nws lub ntim ntim yuav tsum muaj dej zoo. vapor thiab oxygen thaiv kev ua haujlwm.
2. Qhov cuam tshuam ntawm qhov chaw khov khov rau ntawm lub zog txhua yam ntawm cov khoom ntim
Raws li peb txhua tus paub, plastics yuav ua rau nkig thiab ua rau tawg thaum raug qhov kub thiab txias ib puag ncig ntev, thiab lawv lub cev lub cev yuav poob qis, uas qhia txog qhov tsis muaj zog ntawm cov ntaub ntawv yas nyob rau hauv cov nqe lus ntawm kev ua haujlwm tsis zoo. Feem ntau, qhov txias tsis kam ntawm plastics yog qhia los ntawm embrittlement kub. Raws li qhov kub thiab txias, cov yas ua nkig thiab yooj yim tawg vim qhov txo qis hauv kev txav ntawm cov saw hlau polymer molecular. Raws li qhov tshwj xeeb cuam tshuam lub zog, 50% ntawm cov yas yuav raug nkig tsis ua haujlwm. Qhov kub ntawm lub sijhawm no yog qhov kub thiab txias. Ntawd yog, qhov qis qis ntawm qhov ntsuas kub rau ib txwm siv cov khoom siv yas. Yog tias cov khoom ntim khoom siv rau cov khoom noj khov tsis muaj qhov tsis zoo, thaum lub sijhawm thauj mus los tom qab thiab thauj khoom thiab thauj khoom, cov khoom siv khov kho tau yooj yim tuaj yeem ua rau lub ntim tau yooj yim, ua rau muaj teeb meem xau thiab ua kom cov khoom noj khoom haus sai sai.
Thaum lub sij hawm cia thiab kev thauj mus los, cov zaub mov khov yog ntim rau hauv cov thawv corrugated. Qhov kub ntawm qhov txias cia yog feem ntau teem ntawm -24 ℃ ~ -18 ℃. Hauv kev cia txias, cov thawv corrugated yuav maj mam nqus cov dej noo los ntawm ib puag ncig, thiab feem ntau ncav cuag noo noo nyob rau hauv 4 hnub. Raws li cov ntaub ntawv muaj feem xyuam, thaum lub thawv corrugated nce mus txog qhov sib npaug ntawm cov dej noo, nws cov ntsiab lus noo noo yuav nce 2% mus rau 3% piv rau lub xeev qhuav. Nrog rau lub sijhawm txuas ntxiv ntawm lub tub yees, lub ntug siab lub zog, lub zog compressive, thiab lub zog sib txuas ntawm cov thawv ntim khoom yuav maj mam txo, thiab yuav txo qis los ntawm 31%, 50%, thiab 21% raws li tom qab 4 hnub. Qhov no txhais tau hais tias tom qab nkag mus rau hauv qhov chaw txias txias, lub zog ntawm cov corrugated cartons yuav txo qis. Lub zog muaj kev cuam tshuam rau qee qhov, uas ua rau muaj kev pheej hmoo ntawm lub thawv tawg nyob rau theem tom ntej. cov
Cov khoom noj khov khov yuav dhau mus ua haujlwm ntau lub sijhawm thauj khoom thiab thauj khoom thaum thauj los ntawm qhov chaw txias mus rau qhov chaw muag khoom. Kev hloov pauv tsis tu ncua ntawm qhov sib txawv ntawm qhov kub thiab txias ua rau cov dej vapor hauv huab cua nyob ib puag ncig ntawm lub thawv corrugated kom condense rau ntawm lub thawv, thiab cov dej noo ntawm lub thawv sai sai nce mus txog 19%. , nws ntug siab zog yuav poob li ntawm 23% mus rau 25%. Lub sijhawm no, lub zog txhua yam ntawm lub thawv corrugated yuav raug puas tsuaj ntxiv, ua rau muaj qhov tshwm sim ntawm lub thawv tawg. Tsis tas li ntawd, thaum lub sij hawm lub thawv stacking txheej txheem, lub Upper cartons exert nruam zoo li qub siab nyob rau hauv qis cartons. Thaum cov cartons nqus dej noo thiab txo lawv cov kev ua haujlwm siab, cov thawv hauv qab yuav raug deformed thiab crushed ua ntej. Raws li kev txheeb cais, kev lag luam poob los ntawm kev sib tsoo ntawm cov thawv ntawv vim yog nqus dej noo thiab cov khoom siv ultra-high stacking txog li 20% ntawm tag nrho cov kev poob hauv cov txheej txheem ncig.
Kev daws teeb meem
Txhawm rau txo qhov zaus ntawm ob qhov teeb meem loj saum toj no thiab ua kom muaj kev nyab xeeb ntawm cov khoom noj khov, koj tuaj yeem pib los ntawm cov hauv qab no.
1. Xaiv cov khoom ntim sab hauv uas muaj qhov thaiv thiab lub zog siab.
Muaj ntau hom ntim cov ntaub ntawv nrog cov khoom sib txawv. Tsuas yog los ntawm kev nkag siab txog lub cev ntawm ntau cov ntaub ntawv ntim khoom tuaj yeem xaiv cov khoom tsim nyog raws li kev tiv thaiv cov khoom noj khov, kom lawv tsis tuaj yeem tswj tau qhov tsw thiab zoo ntawm cov khoom noj, tab sis kuj qhia txog tus nqi ntawm cov khoom.
Tam sim no, cov hnab yas hloov tau yooj yim siv rau hauv cov khoom noj khov yog muab faib ua peb pawg:
Thawj hom yogib txheej ntim hnab, xws li PE hnab, uas muaj qhov cuam tshuam tsis zoo thiab feem ntau siv rau ntim zaub;
Cov qeb thib ob yogcomposite mos yas ntim hnab, uas siv cov nplaum nplaum rau ob lossis ntau txheej ntawm cov ntaub ntawv yas ua ke, xws li OPP / LLDPE, NY / LLDPE, thiab lwm yam, uas muaj cov khoom zoo noo noo-pov thawj, txias-resistant, thiab puncture-resistant zog;
Cov qeb thib peb yogmulti-layer co-extruded saj zawg zog ntim hnab, nyob rau hauv uas cov ntaub ntawv raw nrog txawv zog xws li PA, PE, PP, PET, EVOH, thiab lwm yam yog melted thiab extruded cais, merged ntawm lub ntsiab tuag, thiab ces ua ke ua ke tom qab tshuab molding thiab txias. , cov khoom siv no tsis siv cov nplaum nplaum thiab muaj cov yam ntxwv tsis muaj kuab paug, muaj kev tiv thaiv siab, siab zog, siab thiab kub tsis kam, thiab lwm yam.
Cov ntaub ntawv qhia tau hais tias nyob rau hauv cov teb chaws tsim thiab cheeb tsam, kev siv cov ntim thib peb suav txog li 40% ntawm tag nrho cov ntim khoom noj khov, thaum nyob hauv kuv lub teb chaws tsuas yog kwv yees li 6% thiab xav tau kev txhawb nqa ntxiv. cov
Nrog rau kev nce qib ntawm kev tshawb fawb thiab thev naus laus zis tsis tu ncua, cov ntaub ntawv tshiab tau tshwm sim ib tom qab, thiab cov khoom ntim khoom noj tau yog ib qho ntawm cov neeg sawv cev. Nws siv biodegradable polysaccharides, proteins los yog lipids raws li matrix, thiab tsim ib tug tiv thaiv zaj duab xis nyob rau saum npoo ntawm cov khoom noj khov uas siv tej yam ntuj tso edible tshuaj raws li raw cov ntaub ntawv thiab los ntawm intermolecular kev sib tshuam los ntawm kev qhwv, dipping, txheej los yog tshuaj tsuag. , los tswj cov dej xau thiab oxygen nkag mus. Cov yeeb yaj kiab zoo li no muaj cov dej tsis zoo thiab muaj zog roj permeability tsis kam. Qhov tseem ceeb tshaj plaws yog tias nws tuaj yeem noj nrog cov zaub mov khov tsis muaj kuab paug, thiab muaj kev thov dav dav.
2. Txhim kho qhov txias tsis kam thiab kev siv lub zog ntawm cov khoom ntim sab hauv
Txoj kev ib, xaiv ib tug tsim nyog compound los yog co-extruded raw khoom.
Nylon, LLDPE, EVA tag nrho muaj qhov kub thiab txias tsis kam thiab tsim kua muag tsis kam thiab cuam tshuam. Qhov sib ntxiv ntawm cov khoom siv raw hauv cov txheej txheem sib xyaw lossis co-extrusion tuaj yeem txhim kho cov dej tsis zoo thiab huab cua tsis kam thiab lub zog txhua yam ntawm cov khoom ntim.
Txoj kev thib ob, tsim nyog nce qhov kev faib ua feem ntawm plasticizers. Plasticizer feem ntau yog siv los ua kom tsis muaj zog ntawm cov khoom sib txuas ntawm cov molecules polymer, thiaj li ua rau kom muaj zog ntawm cov saw hlau molecular, txo crystallization, manifested raws li qhov txo ntawm polymer hardness, modulus embrittlement kub, nrog rau kev txhim kho ntawm elongation thiab yooj.
3. txhim kho lub zog compressive ntawm corrugated thawv
Tam sim no, kev ua lag luam yeej siv lub thawv corrugated los thauj cov khoom noj khov, cov thawv no yog ib puag ncig los ntawm plaub lub rooj tsavxwm corrugated, nce thiab nqis los ntawm plaub tawg tis hla folding sealing hluavtaws hom. Los ntawm kev txheeb xyuas cov ntaub ntawv thiab kev kuaj xyuas, nws tuaj yeem pom tias lub thawv ntim tau tshwm sim nyob rau hauv plaub daim duab los qhia vertically nyob rau hauv lub thawv qauv, yog li ntxiv dag zog rau lub zog compressive ntawm qhov chaw no tuaj yeem txhim kho tag nrho lub zog compressive ntawm lub thawv. Tshwj xeeb tshaj yog, ua ntej ntawm tag nrho cov, nyob rau hauv lub thawv phab ntsa nyob ib ncig ntawm qhov sib ntxiv ntawm lub nplhaib lub tes tsho, nws raug nquahu kom siv A corrugated cardboard, nws elasticity, poob siab absorbing, tuaj yeem tiv thaiv cov khoom noj khoom haus khov ua rau cov khoom noj khoom haus tsis zoo. Thib ob, lub thawv hom thawv qauv tuaj yeem siv tau, lub thawv hom no feem ntau yog ua los ntawm ntau daim ntawm corrugated board, lub thawv lub cev thiab lub thawv npog yog sib cais, los ntawm lub hau rau kev siv. Kev ntsuam xyuas qhia tau hais tias nyob rau hauv tib lub ntim ntim, lub zog compressive ntawm lub thawv kaw yog li 2 npaug ntawm lub thawv ntim khoom.
4. Txhim kho kev ntim khoom
Kev ntim khoom yog qhov tseem ceeb heev rau cov khoom noj khov, yog li lub xeev tau tsim GB / T24617-2009 Frozen Food Logistics Packaging, Mark, Transportation and Storage, SN / T0715-1997 Export Frozen Food Commodity Transportation Packaging Inspection Regulations thiab lwm yam qauv thiab cov kev cai, los ntawm kev teeb tsa qhov tsawg kawg nkaus ntawm cov khoom ntim khoom ua tau zoo, kom ntseeg tau tias qhov zoo ntawm tag nrho cov txheej txheem los ntawm kev muab cov khoom ntim cov ntaub ntawv raw, txheej txheem ntim thiab ntim cov nyhuv. Rau qhov no, lub tuam txhab yuav tsum tsim kom muaj cov khoom ntim zoo tswj kev kuaj sim, nruab nrog peb kab noj hniav ua ke thaiv cov qauv ntawm cov pa oxygen / dej vapor transmittance tester, ntse hluav taws xob nro kuaj tshuab, thawv compressor kuaj tshuab, rau khov ntim cov khoom thaiv kev ua haujlwm, compression resistance, puncture. kuj, tsim kua muag kuj, tej yam kuj thiab ib tug series ntawm kev ntsuam xyuas.
Txhawm rau ua kom tiav, cov khoom ntim ntawm cov khoom noj khov tau ntsib nrog ntau yam kev xav tau tshiab thiab teeb meem tshiab hauv cov txheej txheem thov. Kev kawm thiab daws cov teeb meem no muaj txiaj ntsig zoo los txhim kho kev khaws cia thiab kev thauj mus los zoo ntawm cov zaub mov khov. Tsis tas li ntawd, kev txhim kho cov txheej txheem kev ntim khoom, kev tsim ntau hom ntim cov ntaub ntawv soj ntsuam cov ntaub ntawv, tseem yuav muab kev tshawb fawb hauv paus rau kev xaiv cov khoom siv yav tom ntej thiab kev tswj kom zoo.
Post lub sij hawm: Dec-23-2023
