Pazinthu zopanga zapamwamba, makamaka m'makampani opaka pulasitiki, kupeza kulumikizana kodalirika pakati pa zigawo ndizovuta komanso zovuta. Ma polima ambiri, monga polypropylene, mwachibadwa amakhala ndi mphamvu zochepa pamtunda, zomwe zimawapangitsa kuti asagwirizane ndi inki, zomatira, kapena zomata zotsatizana. Kuti mugonjetse chopinga chachikuluchi, njira zosinthira pamwamba ndizofunika kwambiri. Zina mwa izi, chithandizo cha corona chadziwika ngati ukadaulo wapangondya, womwe ukuthandiza-zinthu zamapulasitiki zokutira zolimba komanso zolimba m'magawo osiyanasiyana kuyambira pakuyika zosinthika kupita ku nsalu zaukadaulo.
1. Sayansi ndi Njira Zamankhwala a Corona
Chithandizo cha Corona ndi njira yaukadaulo yosinthira pamwamba yomwe imagwiritsa ntchito-kutentha kochepa kwa corona discharge plasma kuti isinthe mawonekedwe a chinthu. Mfundo yofunika kwambiri ikuphatikizapo kupanga-voltage, high{3}}magetsi otuluka pakati pa electrode ndi grounded roller. Pamene gawo la pulasitiki-nthawi zambiri filimu kapena pepala-likudutsa m'dera lotayira, madzi a m'magazi amalumikizana ndi polima. Kulumikizana uku kumaphwanya mamolekyu a maselo pamwamba ndikuyambitsa magulu ogwirira ntchito (monga ma carbonyls ndi ma hydroxyls) kudzera munjira yofanana ndi okosijeni pang'ono. Chotsatira chachikulu ndikuwonjezeka kwakukulu kwa mphamvu yapamwamba ya zinthu, zomwe nthawi zambiri zimayesedwa mu dynes pa sentimita (dyn/cm). Mwachitsanzo, mankhwala a corona amatha kukweza mphamvu ya pamwamba pa biopolymer ngati polylactic acid (PLA) kufika pamlingo wofika pa 50 dyn/cm, ndikuisintha kuchoka ku -yotsika,{12}}yopanda mphamvu{12}}yopanda mphamvu kukhala yomwe imalola madzi mosavuta{{13}kutengera inki ndi zokutira. Kusintha kumeneku ndikofunikira chifukwa kumapangitsa kuti pakhale malo okhala ndi mankhwala omwe amalimbikitsa mphamvu zapakati pa ma intermolecular mphamvu (van der Waals forces) zokhala ndi zokutira zomwe zimagwiritsidwa ntchito, motero zimatsimikizira kuti zimamatira mwamphamvu.
2. Kuphatikizidwa mu Njira Yopaka Pulasitiki
Kugwiritsa ntchito chithandizo cha corona si gawo lodziyimira pawokha koma ndi gawo lophatikizika mwadongosolo lambiri. Njira yopangira mafilimu{1}}apamwamba otchingidwa ndi zotchinga ikuwonetsera bwino mgwirizanowu. Njira nthawi zambiri imayamba ndi mankhwala a corona a maziko a polima gawo lapansi (mwachitsanzo, polypropylene kapena polyester film). Kuchiza koyambiriraku kumapangitsa kuti pamwamba pakhale choyambira kapena tayi-yosanjikiza, yomwe nthawi zambiri imakhala yokutira{7}yopangidwa kuti ipititse patsogolo kulumikizana. Potsatira pulayimale, chotchingira chachikulu-chomwe chingakhale madzi{10}opangidwa ndi zinthu monga sodium polysilicate kapena zokutira monga Saran (polyvinylidene chloride copolymer){11}}amapaka. Kuchita bwino kwa kapangidwe kamitundu yambiri kumadalira chithandizo choyambirira cha corona. Popanda izo, mgwirizano pakati pa filimu yoyambira ya polypropylene ndi zokutira zotsatizana za Saran, mwachitsanzo, zingakhale zofooka komanso zosavuta kusokoneza. Ma Patent ndi machitidwe a mafakitale nthawi zonse amatchula chithandizo cha corona (ndipo nthawi zina lawi) ngati njira yothandiza, yokhazikika ya okosijeni yofunikira kuti tipeze "chomangira chachikulu" pakugwiritsa ntchito izi.
3. Mafotokozedwe Aukadaulo ndi Kusankha Kwadongosolo
Kusankha ndi kugwiritsa ntchito njira yoyenera yochizira corona ndikofunikira kuti pakhale zotsatira zokhazikika. Machitidwe amakono amagawidwa mozama mu zigawo ziwiri zazikulu: jenereta yopangira magetsi ndi electrode applicator (kapena wothandizira). Potchula dongosolo, mainjiniya ayenera kuganizira zinthu zingapo zofunika kupitilira mtundu wazinthu komanso liwiro la mzere wopanga. Mulingo wofunikira wa dyne-muyeso wa mphamvu yapamtunda-ndi chinthu chofunikira kwambiri. Makina apamwamba owongolera digito amapereka kulondola kwapamwamba pakusunga mulingo wofunikira wa dyne pamagulu onse opanga, kuwonetsetsa kuti kumamatira kofanana komanso kuchepetsa zinyalala zakuthupi. Mapangidwe a dongosololi ayeneranso kuwerengera kukhazikika kwa ntchito; {{7}mankhwala apamwamba kwambiri amakhala ndi dzimbiri-matupi achitsulo osamva kutentha ndi kutentha-zigawo zokhazikika za polima kuti zipirire m'malo ovuta a mafakitale okhala ndi kutentha komwe kumatha kufika madigiri 200. Komanso, kukonza zinthu zofunika kwambiri monga maelekitirodi ndi -jenereta yothamanga kwambiri n'kofunika kwambiri kuti zizitha kugwira bwino ntchito, kusamalidwa bwino, ndiponso kuwonjezera moyo wantchito wa chipangizocho.
4. Ntchito Zamakampani ndi Zopindulitsa
Kagwiritsidwe ntchito kochizira corona popaka pulasitiki kumakhudzanso-mafakitale ambiri amtengo wapatali. Gawo lazopakapaka ndi m'modzi mwa omwe amagwiritsa ntchito ukadaulo uwu, pomwe mafilimu apulasitiki opangidwa ndi pulasitiki amatsimikizira kuti inki zowoneka bwino komanso zotchingira zodzitchinjiriza zimamamatira bwino, kupanga zonyezimira, -zokopa, komanso zolongedza zolimba. Mawonekedwe onyezimira pamakanema omwe amathandizidwa sikuti amangowonjezera kukopa kowoneka bwino chifukwa cha kuchulukitsitsa kwamitundu komanso kusiyanitsa komanso kumagwira ntchito ngati gawo loteteza. Kupitilira kulongedza, njirayo ndiyofunikira popanga makanema okutidwa kuti agwiritse ntchito mwaukadaulo, kuphatikiza zolemba, matepi aku mafakitale, ndi ma laminate apadera pomwe kudalirika kwa magwiridwe antchito sikungasokonezedwe. Njirayi imathandizira kugwiritsa ntchito zokutira zoteteza zachilengedwe, monga-inki ndi zomatira zochokera m'madzi, zomwe zingavutike kunyowetsa ndi kumamatira ku malo osayeretsedwa a polyolefin. Kuthekera uku kumagwirizana ndi njira zomwe zikukula zokhazikika pakupanga.
Mapeto
Mwachidule, chithandizo cha corona ndi choposa gawo loyamba; ndichothandizira chofunikira kwambiri komanso magwiridwe antchito pamakampani opaka pulasitiki. Poonjezera ndendende mphamvu ya pamwamba ya ma polima pogwiritsa ntchito madzi a m'madzi a m'magazi oyendetsedwa bwino, imathetsa vuto lakumamatira lomwe limadza chifukwa cha mapulasitiki otsika-amphamvu. Kuphatikizika kwake kosasunthika mumizere yokutira, kuphatikizidwa ndi kupita patsogolo kwaulamuliro wa digito pamagawo osasinthika a dyne, kumapangitsa kukhala ukadaulo wodalirika komanso wofunikira. Kuchokera pakuwonetsetsa kuti phukusi la chakudya limasindikizidwa kwanthawi yayitali mpaka kutsimikizira kuti-chinthu chapamwamba kwambiri chopangidwa ndi laminated, ntchito ya chithandizo cha corona ndiyofunikira. Pamene sayansi yakuthupi ikupita patsogolo komanso zofuna zokutira zapamwamba zikukula, kulondola komanso kusinthasintha kwa chithandizo cha corona kupitilira kulimbikitsa luso lopanga zinthu zapulasitiki padziko lonse lapansi.