Iindima Eziphambili Zezinto Ezizinzisa Ulwelo Kwiifilimu Ezikumgangatho Wokutya

Kwindawo eguquguqukayo yokupakisha ukutya, apho ukhuseleko, ulwandiso lwexesha lokugcinwa kokutya, kunye nokuthembeka kwemveliso kuhlangana khona, izinto ezigcina ulwelo zivele njengeengongoma ezingadunyiswanga. Ezi zongezo, ezenziwe ngobuchule kwiifilimu ezikumgangatho wokutya, zidlala indima ezininzi ezibalulekileyo kwimpilo yabathengi kunye nokusebenza kakuhle kwemizi-mveliso. Makhe sijonge imisebenzi emine ephambili eyenza izinto ezigcina ulwelo zibe yeyona nto ibalulekileyo ekupakisheni ukutya kwanamhlanje.

Ukuqina kobushushu: Iifilimu ezikhuselayo kwi-thermal-inducedUkwehla komgangatho

Iifilimu ezikumgangatho wokutya, nokuba yi-polyethylene (PE) okanye i-polypropylene (PP), zilungiswa ngobushushu obuphezulu (umz., ukukhupha, ukugquma) zifikelela kwi-230°C.Iziqinisi zolwelozisebenza njengabagcini bobushushu, zithintela ii-free radicals eziveliswa ngexesha lokuvezwa kubushushu. Uphononongo olwenziwe yi-Institute of Packaging Technologies lufumanise ukuba ngaphandle kweziqinisi, iisampulu zefilimu zibonise ukwehla kwama-35% kumandla okutsalwa emva kwemizuzu eli-10 kwi-200°C. Ngokwahlukileyo koko,iifilimu ezine-liquid stabilizer elungiselelwe kakuhleIifomyula zigcinwa ngaphezulu kwe-90% yamandla azo okuqala, ziqinisekisa ukuqina kwesakhiwo ngexesha lokupheka njengeetreyi zokutya ezifakwa kwi-microwave.

Ukwandisa ixesha lokuphila eshelufini: Ukunciphisa i-Oxidation kunye nokubola kwe-UV​

Ngaphandle kokucubungula, izinto ezigcina ulwelo zilwa nezinto ezibangela uxinzelelo kwindalo ngexesha lokugcina nokuthuthwa. Imitha ye-UV kunye nokuvezwa kweoksijini kunokubangela i-photo-oxidation, okubangela ukuba iifilimu zibe tyheli kwaye ziqhekeke. Umzekelo, kuvavanyo lokuthelekisa kwiphakheji ye-potato chip, iifilimu ezinezongezo zolwelo ezizinzisa i-UV zandisa ubutsha bemveliso nge-25%, njengoko kulinganiswa ngexabiso le-peroxide. Ii-antioxidants ezisekelwe kwi-fatty acid kwi-liquid stabilizers zisusa ioksijini, ngelixa izinto ezithatha i-UV ezifana ne-benzotriazoles zikhusela iifilimu ekonakalisweni yimitha, zigcina ubuhle bephakheji kunye nexabiso lesondlo lokutya.

UkuqhubekekaUphuculo: Ukuphucula i-Melt Flow kunyeUkufana

Abavelisi bajongene nemingeni yokufikelela kubukhulu obufanayo befilimu kunye nokugqitywa komphezulu. Iziqinisi zolwelo zinciphisa i-melt viscosity ukuya kuthi ga kwi-18%, ngokweengxelo zoshishino, nto leyo evumela ukukhutshwa okuthambileyo. Olu phuculo lubaluleke kakhulu kwimigca yemveliso ekhawulezayo, apho umahluko we-0.1 mm kubukhulu unokukhokelela kwinkunkuma enkulu. Ngokukhuthaza ukwenziwa kweplastiki rhoqo, iziqinisi zinciphisa iziphene ezifana nokuguquguquka komphezulu we-sharks kunye nobukhulu, okubangela ukonga iindleko kunye nokuphucula imveliso.

Ukuthotyelwa kweMithetho: Ukuqinisekisa uKhuseleko lokutya kunye nabathengiUkuthembana

Ukhuseleko lweefilimu ezikumgangatho wokutya luxhomekeke kulawulo lokufuduka kwezongezo. Iziqinisi zolwelo kufuneka zilandele imigaqo engqongqo, efana ne-US FDA 21 CFR 178.2010 kunye ne-EU Regulation (EC) No 10/2011. Umzekelo,izinto ezizinzileyo ze-calcium-zinc, eziqinisekisiweyo njengezinye iindlela ezingezizo iityhefu endaweni yeekhompawundi zemveli ezisekelwe kwilothe, zihambelana nemigangatho yehlabathi yezinto ezidityanisiweyo zokutya. Amanani azo aphantsi okufuduka (≤0.1 ppm kwiintsimbi ezinzima) azenza zilungele ukupakishwa kokutya kweentsana, apho imida yokhuseleko ibaluleke kakhulu.

Imeko-bume yexesha elizayo: Ubuchule kwiTekhnoloji yokuZinzisa​

Eli shishini libona utshintsho oluya kwi-bio-based liquid stabilizers. Ioyile yesoya e-epoxidized, ephuma kwizixhobo ezivuselelekayo, ngoku ithatha i-30% yesabelo semarike ye-stabilizer enobuhlobo nokusingqongileyo. Abaphandi bakwahlola iindlela ezininzi zokudibanisa ukuzinza kunye neempawu ezisebenzayo, ezifana nokukwazi ukulwa neentsholongwane. Ezi nkqubela phambili zithembisa ukuchaza ngokutsha imilinganiselo yokhuseleko kunye nokuzinza kokupakisha ukutya.

Ukuqukumbela, izinto ezizinzisa ulwelo azizongezo nje kuphela kodwa zizinto ezibalulekileyo ezikhusela ukuthembeka kokutya, zilungelelanise imveliso, kwaye zigcina ukuthotyelwa kwemithetho. Njengoko imfuno yabathengi yokupakisha okukhuselekileyo nokuhlala ixesha elide ikhula, ezi zinto ziguquguqukayo ziya kuqhubeka zikhula, ziqhuba ubuchule kwinkqubo yokupakisha ukutya.