I. Mabaadi'da iyo Talaabooyinka Isticmaalka Qalinka Corona si loo ogaado Filimka Corona
Qalinka koronadu waa aalad si degdeg ah loogu go'aamiyo tamarta dusha filimka (qiimaha korona) iyadoo lagu cabbirayo qoynta khad. Mabda'adeedu waxay ku salaysan tahay xidhiidhka ka dhexeeya qiyamka dyne (cutub ka mid ah tamarta dusha sare, 1 dyne=1 mN/m) iyo faafinta khad. Tallaabooyinka gaarka ah waa sida soo socota:
1. Nadiifi dusha sare: filinka ku masax masax alkohol ah si aad uga hortagto in wasakhdu ay saamayso natiijada baaritaanka.
2. Tijaabada Xariiqda: Isticmaal qalinka koronto si aad ugu sawirto xariiq dhererkeedu yahay 5 cm dusha filimka oo aad u fiirsato habdhaqanka khad 2 ilbiriqsi.
- Hadii khadku hoos u dhaco dhibco, waxa ay tusinaysaa tamar aan ku filnayn oogada (qiimaha koronadu waxa uu ka hooseeyaa qiimaha qalinka lagu calaamadeeyay).
- Haddi khadku si siman u faafo, tamarta korku waxay joogtaa ama ka saraysaa qiimaha qalinka lagu calaamadeeyay.
3. Xaqiijinta Gradient: Ku celi tijaabada adoo isticmaalaya qiyamka qalinka corona ee qiyamka dyne ee kala duwan (tusaale, 38, 40, iyo 42 dynes) si aad si sax ah u go'aamiso filimka dhabta ah qiimaha corona.
* Xusuusin *: Deegaanka tijaabada waa in lagu ilaaliyaa 25± 5 digrii iyo qoyaan ka hooseeya 60% si looga hortago heerkulka iyo qoyaanka inay saameeyaan waxqabadka khadka (tixraac ASTM D2578).
II. Tilmaamaha Qiimaha Corona iyo Kala duwanaanshaha Tijaabada ee Filimada Laminated iyo Matte
1. Film Laminated Corona Value: Halbeegga warshaduhu waa 38-42 dynes ( isha xogta: ISO 8296-2016). Sababaha ugu waaweyn:
- Aflaanta la dahaadhay waxay caadi ahaan ka samaysan yihiin walxaha BOPP/PET, kuwaas oo u baahan tamar sare oo dusha sare ah si loo hubiyo ku-dhejinta khad ama xabagta.
2. Matte Film Corona Qiimaha: Heerka guud waa 32-36 dynes ( isha xogta: heerka TAPPI T458). Kala duwanaanshaha waxaa ka mid ah:
{{0} Dusha sare ee filimka matte ayaa barafoobay, qalafsanaantuna korodhay waxay yaraynaysaa qiimaha dyne ee waxtarka leh;
{{0} Markaad tijaabinayso, isticmaal qalin koronto leh caarad ka dhumuc weyn si aad isaga ilaaliso xukun khaldan sababtoo ah sinnaanta dusha sare.
III. Xaalado Gaar ah iyo Dhibaatooyinka Caadiga ah
1. Cilad-baadhista qiyamka Corona ee aan caadiga ahayn ee Matt Films:
- Haddii natiijadu si weyn isu bedbeddesho, waxaa lagu talinayaa in lagu tijaabiyo nidaamka daawaynta balaasmaha (sax ±1 dyne).
- Haddii koronadu ku filnaan waayo meelaha qaarkood ee filimka matte, waxa lagu kabi karaa habka daawaynta corona (awoodda waa in lagu hagaajiyaa 50-100W).
2. Sharaxaada xirfadeed ee qiimayaasha is khilaafaya:
- Goobo kala duwan oo isku filim ah ayaa laga yaabaa inay la kulmaan kala duwanaansho 2-3 dynes ah, taas oo ah caadi ( xadka dulqaadka ISO).
- Hadii filimka corona qiimihiisu ka yar yahay 38 dynes, delamination ka kooban ayaa dhici kara (tixraac shuruudaha tijaabada xoogga diirka ee GB/T 8808-2023).