Ulwazi oluyisisekelo lwefilimu yepulasitiki

Kumagama e-National Packaging General (GB4122-83), incazelo yokupakisha okuguquguqukayo ithi: ukupakisha okuguquguqukayo kubhekisela ekupakisheni okungashintsha isimo sesitsha ngemva kokugcwalisa noma ukususa okuqukethwe. Zonke izinhlobo zezikhwama, amabhokisi, amasethi nezimvilophu ezenziwe ngephepha, i-aluminium foil, i-fiber, ifilimu yepulasitiki kanye nezakhiwo zazo ziyiphakheji eguquguqukayo. Ngokuvamile, amapulasitiki ashidi anobukhulu obungaphansi kuka-0.25mm abizwa ngokuthi amafilimu. Ifilimu yepulasitiki iyabonakala, iyaguquguquka, inokumelana okuhle kwamanzi, ukumelana nomswakama kanye nokumelana nomoya, amandla amahle omshini, izakhiwo zamakhemikhali ezizinzile, ukumelana nowoyela, kulula ukuphrinta umbhalo omuhle, isikhwama sokuvala esingakwazi ukushisa. Ingahlangabezana nezidingo zokupakisha zazo zonke izinhlobo zezinto, isetshenziswa ekupakisheni okulula ukugcina, okulula ukubeka ukudla okulula, izidingo zansuku zonke, izimpahla ezincane zephakeji esitolo esikhulu izinto ezinhle kakhulu. I-Guangdong Danqing Printing Co., Ltd ineminyaka engu-30 yesipiliyoni ekukhiqizeni ukupakisha okuguquguqukayo, ikakhulukazi ikhiqiza isikhwama se-spout, isikhwama se-stand up zipper, ifilimu ye-plastic roll nokunye; Inikeza ukuphrinta okuhle kakhulu, ingaphrinta imibala efinyelela ku-13.

Ukuphrinta okuguquguqukayo kokupakisha okusekelwe kufilimu yepulasitiki kudlala indima ebalulekile ekuphrinteni kokupakisha. Ngokwezibalo, kusukela ngo-1980, ukupakisha kwepulasitiki kwamanye amazwe athuthukile emhlabeni kubiza u-32.5% ~ 44% wokuphrinta konke kokupakisha.

Ngokuvamile, ngoba izinto zefilimu eyodwa azilungele ukuvikela ingaphakathi, ngakho-ke izinhlobo ezingaphezu kwezimbili zamafilimu zisetshenziselwa ukuhlanganiswa zibe ungqimba lwefilimu ehlanganisiwe, ukuhlangabezana nezidingo zokulondolozwa kokudla, ubuchwepheshe bokupakisha obungenamagciwane. Ukukhetha izinto zangaphandle zefilimu ehlanganisiwe akulula ukuziklwebha, ukugqoka, ukusebenza okuhle kokukhanya, ukusebenza okuhle kokuphrinta kwezinto, njenge: iphepha, i-cellophane, i-polypropylene ethambile, i-polyester, njll.; Ungqimba oluphakathi luyi-polymer evimbelayo, njenge: i-aluminium foil, i-aluminium ephekiwe, izinto ze-polyvinyl diazene kagesi zangaphakathi zikhethwa kakhulu njenge-polyethylene engenabuthi, engenambitheki kanye nenye i-resin ye-thermoplastic.