Cov txiv hmab txiv ntoo thiab zaub tshiab tseem muaj sia nyob tom qab khaws, txuas ntxiv ua pa thiab koom nrog kev ua haujlwm ntawm lub neej. Ntawm qhov tod tes, ua pa metabolism noj cov txiv hmab txiv ntoo thiab zaub 'tus kheej cov as-ham thiab dej, cuam tshuam rau lawv cov tsos thiab zoo; Ntawm qhov tod tes, kab mob los ntawm cov kab mob pathogenic tuaj yeem ua rau cov txiv hmab txiv ntoo thiab zaub rot. Yog li ntawd, cov txiv hmab txiv ntoo tshiab thiab zaub feem ntau wilt, poob zoo, thiab rot thaum lub sij hawm cia, tsheb thauj mus los, thiab muag khoom, yog li txo lawv cov nqi khoom noj.
Kev ntim khoom zoo tsis yog tsuas yog pab khaws cov txiv hmab txiv ntoo thiab zaub tshiab, txo cov khoom lwj thiab ua rau lub neej ntev, tab sis kuj nyiam cov neeg siv khoom thiab txhawb cov khoom siv. Yas zaj duab xis yog tam sim no feem ntau siv ntim khoom rau txiv hmab txiv ntoo thiab zaub tshiab. Nws muaj qhov zoo xws li pob tshab, rwb thaiv tsev kub, breathability, sealing, thiab tus nqi qis, thiab muaj kev lag luam dav siv rau kev cia siab. Cov hauv qab no yuav qhia txog txoj hauv kev khaws cov txiv hmab txiv ntoo thiab zaub tshiab.
Siab -cov hnab ntim microporous polyethylene
Nyob rau hauv xyoo tas los no, cov khoom ntim no tau siv dav rau txawv teb chaws rau ntim cov txiv hmab txiv ntoo tshiab. Raws li cov yam ntxwv ntawm lub cev ntawm cov txiv hmab txiv ntoo thiab lawv ua siab ntev rau cov pa oxygen thiab cov pa roj carbon dioxide, qee qhov micropores (40μm) tuaj yeem muab ntxiv rau hauv lub hnab zaj duab xis los txhim kho cov pa pauv, txo cov av noo thiab cov metabolites tsis zoo hauv lub hnab, thiab tswj cov pa oxygen concentration hauv lub hnab ntawm cov qib siab (<1% O2). This prevents excessive oxygen concentration from causing anaerobic respiration, thereby avoiding the accumulation of large amounts of volatile substances such as ethanol and acetaldehyde, which would affect the flavor of the fruit. The oxygen concentration inside the film bag can generally be maintained at around 10-15%, and it is highly tolerant of carbon dioxide concentration, making it especially suitable for fruits and vegetables with high humidity, particularly tropical fruits. In other countries, these packaging bags are used to store "frozen" cherries, which can be preserved for 80 days in ordinary cold storage while maintaining the flavor and quality of the fruit.
High -oxygen hloov ntim ntim
Nws yog ib hom kev ntim khoom tshiab uas tau tshwm sim nyob rau xyoo tas los no. Cov ntsiab lus oxygen hauv siab -oxygen tus kheej- cov hnab chlorinated feem ntau yog khaws cia ntawm 70-100%. Lub ntim no muaj qhov zoo hauv qab no: (1) inhibits enzyme kev ua haujlwm thiab tiv thaiv browning ntawm cov txiv hmab txiv ntoo thiab zaub; (2) tiv thaiv kev ua pa anaerobic thiab tswj cov khoom zoo ntawm cov txiv hmab txiv ntoo thiab zaub; (3) zoo inhibits aerobic thiab anaerobic kev loj hlob ntawm cov kab mob thiab tiv thaiv rot, thiab yog li ntawd tau nyiam ntau xim. Nws yog qhov tshwj xeeb tshaj yog tsim nyog rau kev khaws cia cov txiv hmab txiv ntoo tshiab thiab zaub thiab cov txiv hmab txiv ntoo tshiab thiab zaub uas nquag ua pa anaerobic thiab fermentation nyob rau hauv siab carbon dioxide concentration thiab qis oxygen concentration. Nyob rau tib lub sijhawm, qhov sib xyaw ua ke ntawm cov pa roj hauv lub hnab yog txiav txim siab raws li cov yam ntxwv ntawm cov txiv hmab txiv ntoo thiab zaub sib txawv.
Cov khoom ntim tshiab biodegradable
Vim muaj kev txhawj xeeb tias kev siv cov tshuaj tua kab mob ntev ntev yuav ua rau tib neeg noj qab haus huv thiab ua paug rau ib puag ncig, nrog rau kev xav tau ntau ntxiv rau kev ntim cov yas yas thiab cov teeb meem loj zuj zus ntawm "dawb paug," tib neeg cov kev xav tau ntawm cov khoom ntim tau hloov mus rau kev nyab xeeb, tsis yog - lom, thiab ib puag ncig phooj ywg. Cov khoom ntim tshiab biodegradable yog lub ntsiab lus kub tshiab hauv kev ntim khoom noj thoob ntiaj teb. Nws siv ntau yam khoom siv biodegradable polymer thiab ntxiv cov kab mob lom, sib txuas ua haujlwm ntau yam xws li kev txuag, degradation thiab kev tiv thaiv ib puag ncig. Cov khoom ntim no yooj yim siv, tshwj xeeb tshaj yog tsim rau ntim cov khoom tshiab - txiav txiv hmab txiv ntoo thiab zaub thiab zaub mov siav, thiab muaj cov ntawv thov dav dav hauv kev ntim zaub mov tshiab yav tom ntej.
