Qaphela: Umahluko kwiimathiriyeli zefilimu zokutywina kunye namacala angaphambili nangasemva

Njengesixhobo sokupakisha esisetyenziswa ngokubanzi, umahluko kwizinto eziphathekayo kunye nangaphambili nangasemva kwefilimu yokutywinwa kubaluleke kakhulu ekuqinisekiseni imiphumo yokupakisha kunye nokuphucula umgangatho wemveliso. Eli nqaku liza kwazisa ngokweenkcukacha izinto zefilimu yokutywina kunye nokwahlukana phakathi kwamacala angaphambili nangasemva.

1. Iintlobo kunye neempawu zokutywina izinto zefilimu

Kukho iintlobo ezininzi zezinto zefilimu zokutywina, kuquka i-PE, i-PET, i-PP, i-PVC, i-PS kunye ne-aluminium foil. Ezi zixhobo zineempawu zazo kwaye zifanelekile kwiimfuno ezahlukeneyo zokupakisha.

1. Ifilimu yokutywina ye-PE (i-polyethylene): inokuguquguquka okuhle kunye nokungafihli, ixabiso eliphantsi, elisetyenziswa kakhulu ekupakisheni ukutya, amayeza kunye namanye amashishini.

2. Ifilimu yokutywina ye-PET (i-polyester): inamandla amakhulu kunye nokuxhatshazwa kokugqoka, okufanelekileyo kwizihlandlo zokupakisha ezifuna amandla aphezulu kunye nokuqina.

3. Ifilimu yokutywina i-PP (i-polypropylene): inokumelana nokushisa okukhulu kunye nokumelana nomswakama, ilungele ukupakishwa kwiindawo eziphezulu zokushisa.

4. Ifilimu yokutywina i-PVC (i-polyvinyl chloride): inokumelana nemozulu entle kunye nokuzinza kweekhemikhali, ilungele ukupakishwa okudinga ukugcinwa kwexesha elide okanye iindawo ezikhethekileyo.

5. Ifilimu yokutywina ye-PS (polystyrene): ine-gloss ephezulu kunye ne-aesthetics, ifanelekile kwiimveliso eziphezulu okanye ukupakishwa kwesipho.

6. Ifilimu yokutywinwa kwe-aluminium foil: ineempawu ezintle zomqobo kunye ne-aesthetics, ilungele ukupakishwa okudinga iipropati eziphezulu zomqobo okanye i-aesthetics ekhethekileyo.

2. Umahluko phakathi kwangaphambili nasemva kwefilimu yokutywina

Ngaphambili nasemva kwefilimu yokutywinwa kuyahluka kwizinto eziphathekayo, ukubonakala kunye nokusebenza. Ukwahlula ngokuchanekileyo kunye nokuzisebenzisa ngokufanelekileyo kubalulekile ekuphuculeni isiphumo sokupakisha.

1. Umahluko wembonakalo: Umphambili nasemva kwefilimu yokutywinwa ngokuqhelekileyo unomahluko ocacileyo kwinkangeleko. Icala langaphambili liyakhazimla, linomphezulu ogudileyo kunye nobuhle, ngelixa icala elingasemva libuthuntu ngokwentelekiso, kwaye umphezulu unokubonisa ukuthungwa okuthile okanye uburhabaxa. Lo mahluko kwimbonakalo unceda abasebenzisi ukuba bahlule ngokukhawuleza amacala angaphambili nangasemva xa beyisebenzisa.

2. Umahluko wokusebenza: Umphambili nasemva kwefilimu yokutywinwa nayo inemidlalo eyahlukeneyo. Icala langaphambili lidla ngokusebenza kakuhle kokushicilela kunye nokumelana nokugqoka, kwaye ifanelekile kwiilogo zokushicilela, iipateni, njl., Ukuphucula ubuhle kunye nokuqatshelwa kokupakishwa. Icala elingasemva ligxininise kakhulu ekusebenzeni kwayo kokutywinwa, okufuneka ikwazi ukudibanisa ukupakisha ngokuqinileyo ukukhusela ukungena komoya wangaphandle, umswakama, njl., Ukuqinisekisa ukhuseleko kunye nokuzinza kwepakethe.

3. Ukusetyenziswa: Xa usebenzisa ifilimu yokutywina, kuyimfuneko ukukhetha ngokufanelekileyo amacala angaphambili nangasemva ngokweemfuno zokupakisha. Ukupakisha okudinga ukuprinta iilogo okanye iipateni, icala langaphambili kufuneka likhethwe njengecala lokushicilela; ukupakisha okufuneka kuphuculwe ukusebenza kokutywinwa, icala elingasemva kufuneka likhethwe njengecala elifanelekileyo.