Kalubalen Adhesion a cikin Marufi na Zamani
A cikin suturar extrusion da sassan lamination, samun ƙarfi, amintaccen mannewa tsakanin fina-finai na polymer da sauran abubuwa (kamar takarda, foil, ko ƙarin filayen filastik) babban ƙalubale ne mai dorewa. Polymers kamar polyethylene (PE) da polypropylene (PP) ba su da sinadarai kuma ba su da ƙarfi, tare da ƙarancin kuzari, yana sa su zama masu juriya da haɗin gwiwa tare da tawada, sutura, da adhesives. Wannan halayyar tana tasiri kai tsaye inganci, dorewa, da ayyuka na samfuran ƙarshe, daga fakitin abinci mai sassauƙa zuwa jakunkuna na likita. Don shawo kan wannan shamaki, masana'antar ta karɓi maganin cutar korona a ko'ina a matsayin mai mahimmanci, a cikin{3}} tsari na kunna saman layi.
Kimiyya Bayan Maganin Corona: Kunna saman
Maganin Corona yana aiki ta hanyar fallasa saman fim ɗin filastik zuwa babban fitarwar wutar lantarki mai ƙarfi a cikin iska. Wannan fitarwa yana haifar da plasma mai wadata a cikin kuzarin lantarki, ions, da radicals kyauta a saman kayan. Hanyar farko don ingantacciyar mannewa ita ce shigar da iskar oxygen{3}mai ɗauke da ƙungiyoyin aiki na polar (kamar carbonyls) akan sarƙoƙin polymer ta hanyar halayen iskar oxygen. Wannan tsari yana ƙaruwa da ƙarfi da ƙarfi na filastik yadda ya kamata.
Ingantattun polarity na saman yana haɓaka ƙwaƙƙwaran haɗin sinadarai na biyu, kamar sojojin van der Waals da hulɗar dipole, tare da shafa mai, tawada, ko adhesives daga baya. Kamar yadda aka nuna a cikin binciken kan fina-finan polyethylene, maganin corona na iya ƙara ƙarfin haɗin gwiwa sosai, tare da ma'aunin ƙarfin kwasfa yana tashi daga matakan da ba a kula da su ba don fina-finan da ba a kula da su ba zuwa mahimman ƙima bayan jiyya. Wannan gyare-gyare a matakin ƙananan ƙananan yana dawwama don rayuwar da aka yi niyya na samfurin kuma yana da mahimmanci don tabbatar da cewa extrusion - rufaffiyar sifofi ko lakadi suna kiyaye mutuncinsu a ƙarƙashin damuwa.
Maɓallin Aikace-aikace a cikin Rufewar Extrusion da Lamination
Aiwatar da maganin corona ba makawa ne a cikin al'amuran maɓalli da yawa a cikin tsarin canzawa:
1. Adhesion Rufin Extrusion:Lokacin da narkakkar polymer (misali, LDPE) aka extruded uwa motsi substrate kamar takarda takarda ko tsare, zalunta da substrate surface a gabani tabbatar da mafi kyau duka wetting da bonding na polymer narke. Wannan yana haifar da uniform, pinhole{3}} kyauta mai mahimmanci don marufi da aikace-aikacen shinge.
2. Fim{0}zuwa -Lamincin Fim:Don ƙirƙirar tsarin laminci da yawa (misali, tsaye{3}}waɗanda suke sama), corona yin magani ɗaya ko duka saman fim ɗin wajibi ne don cimma ƙaƙƙarfan igiyar lamination mai ɗorewa ta amfani da yadudduka. Wannan yana hana delamination kuma yana tabbatar da amincin fakitin.
3. Haɓaka Bugawa:Kafin bugu akan fina-finan robobi, maganin corona yana tabbatar da cewa tawada suna mannewa sosai kuma suna tsayayya da lalata ko ɓarkewa, wanda ke da mahimmanci don kiyaye alamar alama da ƙa'idodi akan marufi.
4. Adhesion Rufin Aiki:A cikin aikace-aikacen da ke buƙatar sutura don kaddarorin shinge (misali, juriya na UV, shingen gas), saman da aka bi da shi yana ba da madaidaicin madaidaicin matakan aikin.
Aiwatar da Masana'antu da Kayan aiki
Maganin Corona ya samo asali ne zuwa fasahar jiyya na farko don fitar da masana'antu da jujjuyawar masana'antu saboda dogaronsa, inganci, da dacewa ga manyan layin samar da sauri-. Tsarin yana yawanci haɗa kai tsaye zuwa layin extrusion ko juyawa.
Daidaitaccen kayan aiki, sau da yawa bisa tsarin filamentary dielectric barrier sallama (DBD), manyan masana'antun duniya da dama ne ke bayarwa. Masu maganin sun ƙunshi tsarin lantarki da na'urar lantarki{1} da aka rufe wanda kayan yanar gizon ke wucewa. Ana iya sarrafa matakin jiyya daidai ta hanyar daidaita sigogi kamar ƙarfi, mita, da saurin yanar gizo. Ga sassa uku{4}}ananan robobin da ake amfani da su a wasu aikace-aikace, an ƙera na musamman na rotary corona magani.
Amfani da Tasirin Masana'antu
Yaɗuwar amfani da maganin corona yana ba da fa'idodi masu inganci da inganci:
Ingantattun Ayyukan Samfur:Yana ba da damar samar da manyan ayyuka masu lanƙwasa da rufaffiyar kayan aiki tare da ingantaccen haɗin gwiwa, amincin hatimi, da ingancin bugawa.
Rage Sharar gida:Ta kusan kawar da gazawa saboda ƙarancin mannewa, kamar bugar kuskure, bawo mai rufewa{0}}, ko rabuwar laminate, tsarin yana rage sharar kayan abu da raguwar lokacin samarwa.
Izinin Kayan aiki:Yana ba masu canzawa damar yin amfani da farashi{0}}mai inganci, mai girma{1}}aiki polyolefins wajen neman aikace-aikace waɗanda in ba haka ba zasu buƙaci ƙarin tsada ko hadaddun kayan.
Yarda da Tsaro:Don marufi na abinci, likitanci, da magunguna, mannewa abin dogaro ba shi da {{0}masu sasantawa don kiyaye shinge mara kyau da hana gurɓatawa, don haka tabbatar da bin ƙaƙƙarfan ƙa'idodin aminci.
Maganin fitarwa na Corona ya kasance fasahar ginshiƙi don masana'antar canza robobi, yadda ya kamata ya magance ƙalubalen mannewa a cikin suturar extrusion da lamination. Ta hanyar gyaggyara kaddarorin polyolefin na dindindin ta hanyar oxidation da gabatar da ƙungiyoyin polar, yana buɗe cikakkiyar damar su don ƙirƙirar ɗorewa, aiki, da sifofi masu inganci da yawa{2}. Kamar yadda buƙatun buƙatun ke ci gaba da haɓakawa zuwa haɓakar haɓakawa da dorewa, rawar da ƙarfi da ingantattun hanyoyin kunna sama kamar jiyya na corona zai zama mafi mahimmanci ga nasarar masana'antu.