Izicelo ze-TPS ziya kuqhubeka nokuphuhliswa ukuze zihlangabezane neemfuno zemarike ezitshintsha rhoqo.

I-Evoh ResinkwiPakethe yokutya

I-EVOH (Utywala be-Ethylene VinylIiresini zifumene indawo ebalulekileyo kushishino lokupakisha ukutya ngenxa yeempawu zazo ezibalaseleyo zokuthintela, ingakumbi kwiigesi kunye nokufuma. Ezi mpawu zibalulekile ekugcineni ukutya kutsha, ukwandisa ixesha lokuphelelwa, kunye nokugcina umgangatho wencasa, okwenza i-EVOH ibe yinxalenye ebaluleke kakhulu kwinkqubo yokupakisha ukutya.

Umzekelo ophambili wokusetyenziswa kwe-EVOH kukusetyenziswa kwayo kwiifilimu zokupakisha ukutya ezinee-multilayer. Ngokwesiqhelo, i-EVOH isetyenziswa njengomaleko ophakathi kwezi filimu, edityaniswe nezinye izinto ezifana ne-polyethylene (PE) okanye i-polypropylene (PP). Iileya zangaphandle zenzelwe ukubonelela ngenkxaso yesakhiwo kunye nokwenza kube lula ukuvaleka kobushushu, ngelixa umaleko we-EVOH usebenza njengomqobo onamandla ngokuchasene neoksijini kunye nezinye iigesi. Olu lwakhiwo luluncedo ngakumbi ekupakisheni iimveliso ezibuthathaka nezibolayo ezifana nenyama, izinto zobisi, kunye nokutya okuthile okucutshungulwayo okunamafutha amaninzi, konke oku kuchaphazeleka kakhulu yi-oxidation.

Umzekelo wokusetyenziswa kwe-EVOH ufumaneka kwiinyama ezifakwe kwi-vacuum, indawo apho ubutsha bubaluleke kakhulu kwaye ukonakala kunokubangela ilahleko enkulu kwezoqoqosho. Ukuphendula kwimfuno ekhulayo yabathengi yezisombululo zokupakisha ezizinzileyo kodwa ezisebenzayo kakhulu, inkampani ihlolisise ukusetyenziswa kwee-resin ze-EVOH njengendawo yokutshintsha iingxowa ze-vacuum zemveli. Ngokusebenzisa i-EVOH kwinkqubo ye-multilayer equka iileya zangaphandle ezinokubola, bakwazile ukunciphisa inkunkuma yokutya enxulumene nokonakala nge-30% emangalisayo. Ngaphezu koko, le ndlela yahlangabezana nemfuno ekhawulezileyo yabathengi yeendlela zokupakisha ezinobuhlobo nokusingqongileyo. Eli tyala ligxininisa indima embaxa ye-EVOH ekuphuculeni ukhuseleko lwemveliso ngokugcinwa okuphezulu kunye nokuxhasa iindlela zokupakisha ezizinzileyo.

Ngaphezu koko, iingenelo ze-EVOH zidlulela ngaphaya kweengenelo zayo zobugcisa. Ukutshintsha ukuya kwiindlela ezizinzileyo ngakumbi kushishino lokupakisha kufumanisa i-EVOH iphambili, njengoko ingancedi nje kuphela ekunciphiseni inkunkuma yokutya kodwa ikwahambelana neenjongo ezibanzi zokusingqongileyo ngokwenza ukuba kusetyenziswe iplastiki encinci. Ngenxa yoko, i-EVOH ixhasa abavelisi ekusombululeni imingeni yezoqoqosho kunye neyendalo ngempumelelo.

Ukuqukumbela, ukusebenza kakuhle kwe-EVOH ekupakisheni ukutya akunakuphikiswa. Inika abavelisi iindlela ezahlukeneyo zokuphucula ixesha elide lemveliso kunye nokunciphisa amazinga okonakala kakhulu. Njengoko iingxaki zozinzo ziqhubeka zisanda kwihlabathi liphela, kulindeleke ukuba i-EVOH ibe yinxalenye yezisombululo ezintsha kwicandelo lokupakisha ukutya. Ezi nkqubela phambili kulindeleke ukuba zivule indlela yophuhliso olutsha oluhambelana ngokusondeleyo nokukhula kokuqonda okusingqongileyo kunye nokukhula kokukhethwa kwabathengi kozinzo. Oku kujonga kwangaphambili kuqinisekisa ukuba ii-resin ze-EVOH ziya kuhlala ziyinxalenye ebalulekileyo ekuphuhlisweni kwetekhnoloji yokupakisha.