Chidziwitso: Pepalali likuwunika zovuta zamakanema amtundu wa PET/VMCPP ndi PET/VMPET/PE akapangidwa, ndikupereka mayankho ofananira.
Filimu yophatikizika ya aluminiyamu ndi zinthu zofewa zokhala ndi "aluminium luster" yopangidwa ndi kuphatikiza mafilimu okutidwa ndi aluminiyamu (nthawi zambiri VMPET/VMBOPP, VMCPP/VMPE, ndi zina zotero, zomwe VMPET ndi VMCPP ndizomwe zimagwiritsidwa ntchito kwambiri) zokhala ndi mafilimu owoneka bwino apulasitiki.Amagwiritsidwa ntchito popakira zakudya, zinthu zathanzi, zodzoladzola, ndi zinthu zina. Chifukwa cha kuwala kwake kwachitsulo, kusavuta, kugulidwa, komanso magwiridwe antchito abwino, akhala akugwiritsidwa ntchito kwambiri (zotchinga bwino kuposa mafilimu apulasitiki, otsika mtengo komanso otsika mtengo. opepuka kuposa mafilimu opangidwa ndi aluminiyamu-pulasitiki).Komabe, mawanga oyera nthawi zambiri amapezeka panthawi yopanga mafilimu opangidwa ndi aluminiyamu.Izi zikuwonekera makamaka m'mafilimu ophatikizika okhala ndi PET/VMCPP ndi PET/VMPET/PE.
1. Zomwe zimayambitsa ndi njira zothetsera "mawanga oyera"
Kufotokozera za zochitika za "malo oyera": Pali mawanga oyera owoneka bwino pamawonekedwe a filimu yophatikizika, yomwe imatha kugawidwa mwachisawawa komanso kukula kwake.Makamaka mafilimu opangidwa ndi inki osasindikizidwa ndi mbale zonse za inki yoyera kapena mafilimu amtundu wopepuka wa inki, ndizodziwikiratu.
1.1 Kusakwanira kwapang'onopang'ono pamwamba pa aluminiyumu yopukutira mbali ya zokutira zotayidwa.
Nthawi zambiri, kuyezetsa kwamphamvu kwapamwamba kuyenera kuchitidwa pamwamba pa filimu yomwe imagwiritsidwa ntchito musanaphatikizidwe, koma nthawi zina kuyezetsa kwa zokutira za aluminiyamu kumanyalanyazidwa.Makamaka mafilimu a VMCPP, chifukwa cha kuthekera kwa mvula ya zowonjezera zowonjezera ma molekyulu mu filimu yoyambira ya CPP, zotayidwa pamwamba pa mafilimu a VMCPP omwe amasungidwa kwa nthawi yayitali zimakhala zovuta kwambiri.
1.2 Kusakhazikika bwino kwa zomatira
Zomatira zosungunulira ziyenera kusankha njira yoyenera yogwirira ntchito molingana ndi buku lazogulitsa kuti zitsimikizire kuti guluu likuyenda bwino.Ndipo kuwongolera kuyezetsa kwa viscosity kuyenera kukhazikitsidwa panthawi yopitilira kupanga yopanga.Pamene mamasukidwe akayendedwe akuwonjezeka kwambiri, zosungunulira ziyenera kuwonjezeredwa nthawi yomweyo.Mabizinesi omwe ali ndi mikhalidwe amatha kusankha zida zomatira zomatira zomatira.Kutentha kwabwino kwa kutentha kwa zomatira zopanda zosungunulira ziyenera kusankhidwa molingana ndi buku la mankhwala.Kuphatikiza apo, poganizira za nthawi yotsegulira yopanda zosungunulira, pakapita nthawi yayitali, guluu mu wodzigudubuza woyezera uyenera kutulutsidwa munthawi yake.
1.3 Njira yophatikizika yosakwanira
Kwa mapangidwe a PET / VMCPP, chifukwa cha makulidwe ang'onoang'ono komanso kufalikira kosavuta kwa filimu ya VMCPP, kuthamanga kwa lamination roller sikuyenera kukhala kokwera kwambiri panthawi ya lamination, ndipo kugwedezeka kwa mphepo sikuyenera kukhala kwakukulu.Komabe, mawonekedwe a PET/VMCPP akapangidwa, chifukwa chakuti filimu ya PET ndi filimu yolimba, ndikofunikira kuwonjezera kuthamanga kwa laminating roller ndi kugwedezeka kozungulira moyenera panthawi yamagulu.
Zofananira zamagulu ophatikizika amayenera kupangidwa kutengera momwe zida zophatikizidwira pomwe mitundu yosiyanasiyana ya aluminiyamu yokutira ndi gulu.
1.4 Zinthu zakunja zomwe zimalowa mufilimu yophatikizika zomwe zimayambitsa "mawanga oyera"
Zinthu zakunja zimaphatikizapo fumbi, tinthu ta rabala, kapena zinyalala.Fumbi ndi zinyalala makamaka zimachokera kumalo ogwirira ntchito, ndipo nthawi zambiri zimachitika pamene ukhondo wa msonkhanowu ulibe.Tinthu ta mphira timachokera makamaka ku ma discs a labala, zokutira zokutira, kapena zodzigudubuza.Ngati chophatikizika chomera si fumbi wopanda fumbi, ayeneranso kuyesa kuonetsetsa ukhondo ndi ukhondo wa gulu msonkhano, kukhazikitsa kuchotsa fumbi kapena kusefera zida (chophimba chipangizo, wodzigudubuza wowongolera, chomangira chipangizo ndi zigawo zina) kuyeretsa.Makamaka chopukutira, scraper, flattening roller, etc. ziyenera kutsukidwa nthawi zonse.
1.5Kunyezimira kwakukulu mumsonkhano wopanga kumabweretsa "mawanga oyera"
Makamaka m'nyengo yamvula, pamene chinyezi cha msonkhanowu ndi ≥ 80%, filimu yophatikizika imakhala yovuta kwambiri ku zochitika za "mawanga oyera".Ikani mita ya kutentha ndi chinyezi mu msonkhano kuti mulembe kusintha kwa kutentha ndi chinyezi, ndikuwerengera mwayi wa mawanga oyera omwe akuwonekera.Mabizinesi omwe ali ndi mikhalidwe angaganizire kukhazikitsa zida zochotsera chinyezi.Pamapangidwe amitundu yambiri okhala ndi zotchinga zabwino, ndikofunikira kuganizira kuyimitsa kupanga kapena kupanga gulu limodzi lamagulu angapo kapena apakatikati.Kuphatikiza apo, ndikuwonetsetsa kuti zomatira zimagwira ntchito bwino, tikulimbikitsidwa kuchepetsa kuchuluka kwa machiritso omwe amagwiritsidwa ntchito moyenera, nthawi zambiri ndi 5%.
1.6 Gluing pamwamba
Pamene palibe zolakwika zoonekeratu zomwe zimapezeka ndipo vuto la "mawanga oyera" silingathe kuthetsedwa, ndondomeko yophimba pambali ya aluminiyamu yophimba imatha kuganiziridwa.Koma njirayi ili ndi zofooka zazikulu.Makamaka pamene VMCPP kapena VMPET zokutira za aluminiyamu zimatenthedwa ndi kutentha ndi kupsinjika mu uvuni, zimakhala zosavuta kusinthika, ndipo ndondomeko yowonongeka iyenera kusinthidwa.Kuonjezera apo, mphamvu ya peel ya aluminiyumu plating wosanjikiza imatha kuchepa.
1.7 Kufotokozera kwapadera komwe sikunapezeke zolakwika pambuyo potseka, koma "mawanga oyera" adawonekera atakhwima:
Vuto lamtunduwu limakonda kuchitika m'magulu a membrane okhala ndi zotchinga zabwino.Pazinthu za PET / VMCPP ndi PET / VMPET / PE, ngati mawonekedwe a nembanemba ali wandiweyani, kapena mukamagwiritsa ntchito mafilimu a KBOPP kapena KPET, ndizosavuta kupanga "mawanga oyera" akakalamba.
Mafilimu opangidwa ndi zotchinga zapamwamba azinthu zina amakhalanso ndi vuto lomwelo.Zitsanzo zimaphatikizapo kugwiritsa ntchito zojambulazo za aluminiyamu kapena mafilimu owonda monga KNY.
Chifukwa chachikulu cha zochitika za "malo oyera" ndikuti pali mpweya wotuluka mkati mwa nembanemba yamagulu.Mpweya umenewu ukhoza kukhala kusefukira kwa zosungunulira zotsalira kapena kusefukira kwa mpweya woipa wa carbon dioxide wopangidwa ndi zomwe zimachitika pakati pa mankhwala ochiritsa ndi mpweya wa madzi.Gasi atasefukira, chifukwa cha zotchinga zabwino za filimu yophatikizika, sangathe kutulutsidwa, zomwe zimapangitsa kuti pakhale mawonekedwe a "mawanga oyera" (ma thovu) muzosakaniza.
Yankho: Pamene kuphatikizika zosungunulira zochokera zomatira, ndondomeko magawo monga ng'anjo kutentha, mpweya voliyumu, ndi kupsyinjika zoipa ayenera kukhazikitsidwa bwino kuonetsetsa kuti palibe zosungunulira zotsalira mu wosanjikiza zomatira.Lamulirani chinyezi mumsonkhanowu ndikusankha njira yotseka yomatira.Ganizirani kugwiritsa ntchito mankhwala ochiritsa omwe samatulutsa thovu.Kuphatikiza apo, mukamagwiritsa ntchito zomatira zosungunulira, ndikofunikira kuyesa chinyezi muzosungunulira, ndi kufunikira kwa chinyezi ≤ 0.03%.
Zomwe zili pamwambazi ndizofotokozera zochitika za "mawanga oyera" m'mafilimu ophatikizika, koma pali zifukwa zosiyanasiyana zomwe zingayambitse mavuto oterowo pakupanga kwenikweni, ndipo ndikofunikira kupanga ziganizo ndi kukonza kutengera momwe zinthu ziliri.
Nthawi yotumiza: Dec-11-2023