Iingenelo zeFilimu yePVDC Heat Shrink yokuPakisha inyama entsha
Njengoko ukusetyenziswa kwemveliso kwihlabathi liphela kusanda kwaye ubuchwepheshe bokugcina ukutya buhambela phambili, imfuno yezinto zokupakisha itshintshe ukusuka ekukhuselekeni okusisiseko ukuya kwisisombululo esicwangcisiweyo sokuqinisekisa umgangatho. Kwishishini lokupakisha ukutya—ingakumbi inyama entsha—ukukhetha izinto ezifanelekileyo kubalulekile, njengoko kuchaphazela ngokuthe ngqo ixesha lokugcinwa kwemveliso, ukhuseleko, kunye nokubonakaliswa kwayo. Ifilimu yokunciphisa ubushushu yePVDC (Polyvinylidene Chloride), eyaziwa ngeempawu zayo zokuthintela ezigqwesileyo kunye nokusebenza okuzinzileyo, iguqukele ekubeni zizinto ezisebenzayo yaba sisisombululo esiphambili esiqinisekisa umgangatho weemveliso zenyama ezikumgangatho ophezulu ngelixa isanda ukufikelela kwimarike.
Amandla aphambili e Ifilimu yePVDC Ixhomekeke kubuchule bayo bokwenza umqobo opheleleyo. Ngesantya sokudluliselwa kweoksijini esiphantsi njenge-1.2 cm³·mm/(m²·24 h·MPa), esiphantsi kakhulu kunezixhobo zemveli ezinemiqobo ephezulu, i-PVDC ithintela ngokufanelekileyo ukungena kweoksijini. Oku kunceda ekunciphiseni i-oxidation yamafutha kunye nokutshintsha kombala we-myoglobin kwinyama, ukuqinisekisa ukubonakala okutsha kwemveliso kunye nokuthintela ivumba elibi ekuveleni.
Xa kuthelekiswa nezinto ezifana ne-EVOH, iipropati zokuthintela ze-PVDC azichaphazeleki kakhulu kukufuma, nto leyo eyenza ukuba ilungele ukuthuthwa kweetyathanga ezibandayo ezishushu kakhulu kunye nokuhanjiswa kwezinto kwiindawo ezinemvula eninzi, njengeYurophu naseMzantsi Melika. Olu zinzo luthetha ukuba imeko-bume yangaphakathi ihlala yomile kwaye ingangcoliswa kukufuma kwangaphandle, nto leyo enika ukhuseleko oluqhubekayo lokufuma kwinyama entsha kuyo yonke ityathanga lokubonelela.
Ifilimu yesithintelo sePVDCUkukwazi kwayo ukushwabana ngokulinganayo xa ishushu kuyivumela ukuba ivumelane ngokuqinileyo nemicu yenyama engamilanga ngendlela engaqhelekanga, yenze "ulusu lwesibini" olugudileyo, olungenamibimbi. Oku akunciphisi nje kuphela ukulahleka kokushwabana kwaye kuthintele ukuvuza kwamanzi egazini kodwa kukwaphucula kakhulu ukubonakala kwemveliso kwiishelufu zokuthengisa, okwenza ibe nomtsalane ngakumbi kubathengi.
Ukwengeza, Ifilimu yokunciphisa iPVDC Inamandla okumelana nobushushu obuphezulu, nto leyo eyivumela ukuba imelane ne-pasteurization kunye neenkqubo zokupheka ezikumgangatho ophezulu. Ngokungafaniyo nezinye izinto, ezinokonakala phantsi kobushushu obuphezulu kunye nokufuma kwiitanki zokubulala iintsholongwane, i-PVDC igcina ulwakhiwo lwayo kunye nokusebenza kwayo okuthintelweyo. Oku kuyenza ilungele zombini ukupakishwa kwenyama entsha kunye neemveliso zenyama eziphekiweyo, ukutya okulungele ukutyiwa, kunye nezinye iimveliso ezinexabiso eliphezulu ezifuna ukucutshungulwa kwesibini, nto leyo eyandisa ukunikezelwa kwemveliso kumashishini.
Iingenelo ze Ukupakishwa kwePVDC ziye zabonakaliswa ziinkampani eziphambili kushishino. Umzekelo, umenzi omkhulu wemveliso yenyama eTshayina ujongene nemingeni kwimiqobo yeoksijini kunye nokusebenza kokuvuza ngelixa ezama ukwandisa ukusasazwa kwenyama entsha kuzwelonke. Emva kokutshintshela kwi Ifilimu yokunciphisa ubushushu bePVDC, ixesha lokuphelelwa kweemveliso zabo zenyama entsha landiswa kakhulu phantsi kweemeko ze-0-4°C. Oku kuphucule uzinzo lomgangatho ngexesha lokuhanjiswa kwezinto kude kunye nokuboniswa kweevenkile, okuvumela imveliso ukuba ifikelele kwiimarike ezibanzi kwaye inciphise ilahleko ngenxa yokonakala. Eli bali lempumelelo ligxininisa indlela i-PVDC engaphaya nje kokupakisha—sisixhobo esibalulekileyo sokuvelisa imveliso entsha kunye nokwandiswa kwemarike.
Njengoko iimarike zehlabathi zisiya zibeka phambili ukhuseleko lokutya, ixesha elide lokugcinwa, kunye nokuzinza, ukukhetha izinto zokupakisha eziqinisekisiweyo nezisebenza kakuhle kuye kwaba yinto ebalulekileyo kubathengisi benyama abathumela ngaphandle. Iingxowa zokunciphisa ubushushu zePVDC, ngenxa yeempawu zayo zokuthintela eziphezulu, ukunamathela okugqwesileyo, ukumelana nobushushu obuphezulu, kunye nokuguquguquka kwendalo, iye yaba yinxalenye ebalulekileyo kwiipakethe zenyama entsha zanamhlanje.
