I-PVC Stabilizers yeeFilimu zeBanga lokuTyalo lokutya: uKhuseleko, iNtsebenzo kunye neendlela

Xa usonga imveliso entsha okanye okushiyekileyo ngefilimu yokuncamathela ye-PVC, mhlawumbi awucingi malunga nekhemistri entsonkothileyo egcina elaphepha leplastiki elibhityileyo libhetyebhetye, libonakala, kwaye likhuselekile kunxibelelwano lokutya. Nangona kunjalo emva kwayo yonke ifilimu ye-PVC esemgangathweni ye-cling icandelo elibalulekileyo: iPVC ukuzinzisa. Ezi zongezelelo ezingafakwanga zidlala indima ebalulekileyo ekuthinteleni ukuthotywa, ukuqinisekisa ukhuseleko, kunye nokugcina ukusebenza-ukwenza ukuba kubaluleke kakhulu kwizicelo zokupakisha ukutya.

Kutheni i-PVC Cling Films ifuna i-Special Stabilizers

I-PVC ayizinzi ngokwendalo xa ibekwe kubushushu, kukukhanya, kunye noxinzelelo lomatshini ngexesha lokusetyenzwa kunye nokusetyenziswa kokuphela. Ngaphandle kozinzo olufanelekileyo, i-PVC ifumana ukuthotywa, ukukhulula i-hydrochloric acid eyingozi kwaye ibangele ukuba izinto zibe brittle, ziguqulwe, kwaye zingakhuselekanga kuqhagamshelwano lokutya.

Kwiifilimu zokubambelela ngokuthe ngqo, imingeni yahlukile:

• Bafuna ukwenziwa elubala okukhethekileyo ukubonisa iimveliso zokutya

• Kufuneka ugcine ukuguquguquka kumaqondo obushushu ahlukeneyo

• Kufuneka uxhathise ukuthotywa ngexesha lobushushu obuphezulu

• Kufuneka athobele imithetho engqongqo yokhuseleko lokutya

• Ukufuna uzinzo lwexesha elide ngexesha lokugcina kunye nokusetyenziswa

IiMfuno eziphambili zokuZinzisa iBanga le-PVC lokutya

Ayizizo zonke i-PVC stabilizers ezifanelekileyo kwizicelo zoqhagamshelwano lokutya. Ezona zizinzileyo zeefilimu zePVC zokuncamathela kufuneka zihlangabezane nemigangatho engqongqo:

Ukuthotyelwa koMgaqo

Izizinzi zePVC zodidi lokutya kufuneka zithobele imimiselo engqongqo kwihlabathi jikelele. EUnited States, i-FDA's 21 CFR Part 177 ilawula imathiriyeli yeplastiki kuqhagamshelwano lokutya, inciphisa izongezo ezifana ne-phthalates ukuba ingabi ngaphezu kwe-0.1% kwiimveliso zePVC. Imimiselo yaseYurophu (i-EU 10/2011) ngokufanayo inqanda izinto eziyingozi kwaye ibeke imida yokufuduka ukuqinisekisa ukhuseleko lwabathengi.

Ukuqulunqwa okungeyotyhefu

I-traditional lead-based stabilizers, ekhe yaxhaphaka kwi-PVC processing, iye yakhutshwa kakhulu kwizicelo zokutya ngenxa yeenkxalabo zetyhefu. Yangokuukutya-grade stabilizersziphephe iintsimbi ezinzima ngokupheleleyo, ugxile kwezinye iindlela ezikhuselekileyo.

Ukuzinza kweThermal

Ukuveliswa kwefilimu ye-Cling kubandakanya i-extrusion ephezulu yokushisa kunye neenkqubo ze-calendering ezinokubangela ukuthotywa kwe-PVC. Izinzisi ezisebenzayo kufuneka zinikeze ukhuseleko oluluqilima lwe-thermal ngexesha lokuvelisa ngelixa ugcina ukuthembeka kwefilimu.

Ukugcinwa kwezinto elubala

Ngokungafaniyo neemveliso ezininzi zePVC, iifilimu zokuncamathela zifuna ukucaca okukhethekileyo. Ezona zizinziso zisasazeke ngokulinganayo ngaphandle kokudala inkungu okanye ukuchaphazela iipropathi zamehlo.

Ukuhambelana nezinye izongezo

I-Stabilizers kufuneka isebenze ngokuhambelanayo kunye ne-plasticizers, i-lubricants, kunye nezinye izongezo kwi-formulation yefilimu ye-cling ukugcina ukusebenza ngokubanzi.

Iinketho eziphezulu zokuZinzisa kwiiFilimu zePVC zokubambelela

Ngelixa iikhemistri ezahlukeneyo zokuzinzisa zikhona, iindidi ezimbini ziye zavela njengokhetho oluphambili lweefilimu zokutya zodidi lokutya:

Izizinzi zeCalcium-Zinc (Ca-Zn).

I-calcium-zinc stabilizersibe ngumgangatho wegolide wezicelo zePVC zebakala lokutya. Ezi zongezo ezingenayo ityhefu, ezihambelana nokusingqongileyo zibonelela ngolungelelwaniso olubalaseleyo lokusebenza kunye nokhuseleko:

I-calcium zinc stabilizer lukhetho olungeyotyhefu olungenazinyithi eziyingozi kunye nezinye iikhemikhali ezinobungozi, nto leyo eyenza ibe luhlobo olutsha lokuzinzisa kokusingqongileyo kwi-PVC.

Iinzuzo eziphambili ziquka:

• Uzinzo olugqwesileyo lwe-thermal ngexesha lokucubungula

• Imozulu entle kunye nokuxhathisa ukutyheli

• Ukuthambisa okuphezulu okuphucula isantya sokukhupha

• Ukuhambelana okuhle kunye ne-PVC resin kunye nezinye izongezo

• Ukuthotyelwa kwemigaqo engundoqo yoqhagamshelwano lokutya

• Ukukwazi ukugcina ukungafihli kwiifilimu ezincinci

I-UV Stabilizers yoKhuseleko olongezelelweyo

Ngelixa zingezozinziso eziphambili ze-thermal, i-Absorber ye-UV idlala indima ebalulekileyo ekugcineni ingqibelelo yefilimu yokutya ngexesha lokugcinwa kunye nokusetyenziswa. Ezi zongezo zibaluleke kakhulu kwiifilimu zokubambelela ezisetyenziswa kwipakethe ecacileyo evezwe ekukhanyeni.

Ungasikhetha njani isiZinziso esiLungileyo kwiSicelo sakho seFilimu eCling

Ukukhetha ezona zinzinzo zifanelekileyo zifuna ukulungelelanisa izinto ezininzi:

• Ukuthotyelwa koMgaqo:Qinisekisa ukuthotyelwa kwemigangatho yokhuseleko lokutya yengingqi (i-FDA, i-EU 10/2011, njl.) kwiimarike ojolise kuzo.

• IiMfuno zokuSebenza:Cinga ngeemeko zakho ezithile zokuvelisa-iinkqubo eziphezulu zokushisa zingadinga ukuzinza okuthe gqolo okuthe kratya.

• Iimfuno Zokusebenza:Vavanya iimfuno zokucaca, iimfuno zokuguquguquka, kunye nobomi obulindelekileyo beshelufu kwiimveliso zakho zefilimu.

• Ukuhambelana:Qinisekisa ukuba uzinzo lusebenza kakuhle kunye neeplastiki zakho kunye nezinye izongezo.

• Uzinzo:Khangela izinzisi ezixhasa iinjongo zokusingqongileyo ngokusebenzisa ubuthi obuphantsi kunye nokunciphisa impembelelo yokusingqongileyo.

• Iindleko-Ngempumelelo:Ulungelelaniso lweenzuzo zokusebenza ngokuchasene neendleko zokuqulunqa, kuthathelwa ingqalelo zombini ugxininiso olongezelelweyo kunye neenzuzo zokusetyenzwa kakuhle.

Ikamva lePVC Stabilizers kwiPackaging yokutya

Njengoko imfuno yabathengi yokhuseleko, ukupakishwa kokutya okusebenzayo okuphezulu kuqhubeka nokukhula, itekhnoloji yozinziso yePVC iya kuvela ukuze ihlangabezane nemiceli mngeni emitsha. Sinokulindela ukubona:

• Uphuculo olongezelelweyo kuzinzo lwe-thermal kwiindawo ezisezantsi zokongeza

• Imixube eyandisiweyo exhasa ukurisayikilishwa kunye neenjongo zoqoqosho ezijikelezayo

• Imixube emitsha yozinziso eyenzelwe usetyenziso oluthile lwefilimu yokutya

• Iindlela zovavanyo oluphezulu zokuqinisekisa ukhuseleko nokusebenza

• Ukuqhubekeka kwendaleko yolawulo eqhuba ukusungula izinto ezingeyotyhefu ezizezinye

Izinto ezintsha kwinkalo yenzululwazi yemathiriyeli zivula amandla amatsha okuzinzisa kwe-PVC, ngophando olugxile ekuphuhliseni izisombululo ezisebenza ngakumbi, ezizinzileyo zezicelo zokupakisha ukutya.

Utyalo-mali kwiziQinisekiso zoMgangatho kwiiFilimu zeCling eziPhezulu

Uzinziso olufanelekileyo lwePVC lubalulekile ekuveliseni umgangatho ophezulu, okhuselekileyo, kunye neefilim zokubambelela ezithobelayo zokupakishwa kokutya. Ngelixa i-calcium-zinc stabilizers ngoku ikhokela imarike ngolungelelwaniso lwabo oluhle kakhulu lokhuseleko kunye nokusebenza, ukuqaliswa kwezinto ezintsha kuthembisa izisombululo ezingcono nakwixesha elizayo.

Ngokubeka phambili ukuthotyelwa kwemithetho, iimpawu zokusebenza, kunye nokuqwalaselwa kokusingqongileyo, abavelisi banokukhetha izizinzi ezinokuthi zihlangabezane neemfuno zangoku kodwa zibeke iimveliso zabo kwimpumelelo yexesha elizayo kwimarike eguqukayo ngokukhawuleza.

Njengoko i-market stabilizer ye-PVC iqhubeka nokukhula kwayo ngokuzinzileyo, ukubaluleka kwezi zongezo ezibalulekileyo ekuqinisekiseni ukhuseleko kunye nokusebenza kweefilimu ze-cling-grade-grade films ziya kunyuka kuphela-ukwenza ukhetho lokuzinza olunolwazi lubaluleke ngakumbi kunanini ngaphambili.