I flexo printing defects te tackle tur leh productivity tihsan tur i inpeih em? Downtime man to tak takte chu paih bo la, kan Diagnostics chart kimchang leh Flexo printing defects te tana troubleshooting guide hmangin printing process tha zawk kan lo lawm ang.
He guide hian common flexo printing defects 15 a huam a, chu chu a hriat theihna tur, an nghawng theih dan tur, a chhan awm thei, leh i press-te chu guide tlangpui an insem hmain an ven emaw, an chinfel dan tur emaw chungchangah hriatna a pe a ni.
Industry thlirletna .
Flexo printing hi packaging atana printing process lian ber a ni a, kum 2023 chhunga khawvel puma packaging printing market 65% aia tam a ni a, kum 2023 chhung khan packaging industry chauh hi $440 billion vel a ni a, hei hian print quality sang tak neih leh defect tih tlem a pawimawhzia a tarlang a ni. Defect avanga downtime awm hian productivity nasa takin a nghawng thei a, printing company te chuan darkar khatah $1,000 thleng sum an hloh thei a ni.
He diagnostic guide hman dan tur .
Flexographic printing-a chhiatna awm tam ber berte chu kan chhui dawn a ni. Defect tin atan kan sawiho ang:
Engtin nge a hriat theih ang .
Print quality a nghawng dan .
A bulpui ber chu .
Issue optimize emaw fix dan tur .
Table: Common Flexo Printing Defects
| Defect | Visual Impact | Main Cause | Optimization chungchang tlangpui |
| dot gain tam lutuk . | Dots hi a tum aia lian a ni . | Pressure tam lutuk . | pressure tih tlem; Ink viscosity enfiah . |
| Gear marks (banding) 1.1. | Light leh line dum inthlak danglam . | Gears a chhe tawh . | Enkawlna leh lubrication neih fo thin . |
| halo effect a awm em? | Faint Ink Outline a thlalak te . | Pressure tam lutuk . | Cylinder-to-web speed siamrem dan tur . |
| Feathering . | Ink chu a sir lam atanga a sir lam atanga a inzar pharh . | Ink buildup . | Image carrier thianghlim, pressure siam that . |
| donuts 100 a ni. | Screen dots dik lo tak tak, blank centre awmna . | Plate emaw cylinder emaw a hring chhuak thei . | Solvent-resistant elastomer sleeves hmang rawh . |
| Skip chhuak rawh . | Print-a mi bo emaw, light section emaw . | Press Vibrations 10 a awm. | Ink viscosity vawng reng la, press press . |
| Misregistration tih loh chu . | Color leh element te chu a inmil lo hle a ni . | Plate misalignment 100 a ni. | Plate registration dik tak neih a nih leh nih loh enfiah rawh . |
| Mottled image 1000 a ni. | A rawng a inang lo . | Ink transfer tha lo a awm bawk. | Anilox roller tihfai, cell volume siam that . |
| filling a ni a . | Fine details ink tam lutuk nen a khat . | Ink transfer chungchangah . | Pressure tih tlem, ink viscosity monitor . |
| Bridging tih a ni. | Design elements ink overflow vangin connect theih a ni. | pressure sang tak . | Pressure lighten, ink volume siam that . |
| Pinholing a ni a. | Substrate-a spot print loh te te . | Anilox roller bawlhhlawh tak tak te. | Anilox roller tifai la, drying speed pawh siam tha rawh . |
| Print bawlhhlawh tak tak . | Ink chhunga speckle leh bawlhhlawh chi hrang hrang . | Thil bawlhhlawh . | Press components fai tak, ink regulate . |
| Tawpsan thut | Faint duplicated image chu original nen a inzawm a ni. | Ink siam dan tur . | Image carrier thianghlim, ink thickness tihtlem . |
| Slurring a awm em . | Ink chuan substrate lam hawiin a smear a . | Substrate a slipping . | Web tension siamrem, pressure tih tlem . |
| Voids 1000 a ni. | Image-a unprinted gap awmte chu . | Ink riltamna . | Air bubble te chu paih chhuak la, anilox roller tifai rawh . |
15 Flexo Printing lama chhiatna awm tlangpui .
1. Dot gain tam lutuk .
Hman dan tur:
I design-a dots te chu a tum aia lian zawkin a lang a, chu chuan thlalak chu a dum deuh emaw, a chipchiar lo zawk emaw a ni.
Possible influence:
dot gain tam lutuk hian print clarity leh image resolution a ti tlem. Hei hi high-resolution print emaw, details fine emaw atan chuan harsatna a thlen nasa hle. Industry data atanga a lan dan chuan dot gain tam lutuk hian Flexo printing-a print quality complaint 25% vel a nei a ni.
A chhan awm thei: .
pressure sang tak a awm . Printing plate leh substrate inkarah
Plate-te chu a hring chhuak a, chu chu ink emaw solvent emaw aggressive tak tak avanga lo awm fo a ni.
Ink viscosity dik lo emaw anilox cell volume tam lutuk emaw.
Optimize dan tur:
Printing pressure chu 'kiss' impression-ah tihhniam rawh.
In-the-round (ITR) elastomer sleeves ah switch la, a hring hring tlem thei ang bera hman theih a ni.
Anilox volume leh ink viscosity siam that.
Optimization Table: DOT Gain adjustments
| Parameter | setting tha ber a ni. |
| Printing pressure . | 'kiss' impression, a tlem berah chuan |
| Anilox cell volume 1000 a ni. | Moderate, ink type atanga chhut a ni . |
| Ink viscosity 1000 a ni. | A inmil leh a remchang . |
2. Gear chhinchhiahna (banding) .
Hman dan tur:
Substrate web direction-a perpendicular-a kal light leh dark band alternating zawng rawh.
Possible influence:
Gear marks hian print uniformity a tibuai a, professional lo angin a lang. Printing process chhung hian hriat theih an ni fo a, hmuh theiha chhiatna thlentu lian tak an ni a, flexo print defect 18% thleng an awm thei.
A chhan awm thei: .
Optimize dan tur:
Gear chhe tawh enfiah leh thlak fo thin ang che.
Gear hak loh nan lubrication dik tak siam tur a ni.
Mechanical components-a wear tam lutuk loh nan pressure settings siamrem rawh.
3. Halo effect .
Hman dan tur:
Ink chu print area hman tumna piah lamah a lang a, design vel ah 'halo' a siam a.
Possible influence:
Halo effects hian print chu a ti blur emaw, a smeared emaw a, a bik takin a sir vel ah a lang. He defect hi high-definition flexo printing-ah chuan a buaithlak hle.
A chhan awm thei: .
Optimize dan tur:
Printing pressure tih tlem.
Cylinder-to-web speed chu alignment dik tak neih theih nan siamrem tur a ni.
Ink transfer rates check la, a tul chuan siam danglam rawh.
4. Feathering .
Hman dan tur:
Ink chu printing area tum ber atanga chhuak a ni a, chu chu feather sam ang maia projection ang mai a ni.
A nghawng theih dan:
Feathering hian image sharpness a ti tlem a, print chu unprofessional appearance a pe a ni. A bik takin fine detail work emaw small text emaw-ah a awm fo thin.
A chhan awm thei: .
Cylinder leh substrate inkar pressure nasa lutuk.
Ink buildup chu dots vel a ni.
Dirty image carrier emaw substrate-a debris emaw a awm.
Optimize dan tur:
Image carrier leh substrate te chu tifai fo ang che.
Overprint loh nan pressure settings siamrem rawh.
Buildup awm loh nan ink viscosity a balance theih nan enfiah rawh.
5. Donuts .
Hman dan:
Screen dots chu slurred leh distorted angin a lang a, blank emaw semi-blank centre emaw a awm a, doughnuts ang deuh a ni.
Possible influence:
Doughnut ang maia chhiatna hian a tum ber thlalak a tichhe a, print quality nasa takin a ti tlem a ni. He defect hi finer print screen leh details tenau zawkah a awm tam zawk.
A chhan awm thei: .
Optimize dan tur:
Solvent-resistant elastomer sleeves hmang la.
Cylinder leh plate integrity enfiah fo la, a tul angin component chhe tawh thlak thin ang che.
6. Skip out rawh .
Hman dan:
Print section te hi a light lutuk emaw, a bo vek emaw a ni.
Possible influence:
Skip out results incomplete prints, chu chu a bik takin color block lian tak tak emaw design chhunzawm zel emaw tan chuan a tichhe thei hle.
A chhan awm thei: .
press mechanics-a vibrations emaw misalignment emaw a ni.
ink viscosity emaw pH issues emaw a awm thei.
bent shaft emaw out-of-round components emaw a ni thei.
Optimize dan tur:
press mechanics enfiah la, component zawng zawng chu a inmil vek tih enfiah rawh.
Print inmil lohna awm lo turin ink property mumal tak nei tur a ni.
Press-a vibrations awm leh awm loh enfiah leh tihbo.
7. Thil dik lo tih .
Hman dan:
Color emaw design element emaw align lo, blur emaw shifted images emaw a thlen thin.
Possible influence:
Misregistration hi a chhiatna langsar ber pakhat a ni a, a bik takin multicolor printing-ah chuan. Final product precision chu nasa takin a nghawng a ni.
A chhan awm thei: .
Plate alignment dik lo a awm.
Web tension chungchang a ni.
Cylinder emaw plate emaw a chhe thei.
Optimize dan tur:
Print hmain plate te chu calibrate leh align fo thin ang che.
Print run chhunga shift loh nan web tension mumal tak vawng reng ang che.
Cylinder emaw plate emaw chhe tawh tak takte chu misregistration awm loh nan thlak leh thin ang che.
8. Mottled image .
Hman dan tur:
Solid color area te hian print density leh color shade hrang hrangah danglamna langsar tak an nei a.
Thil thleng thei:
Mottled image chuan print chu a inthlau a, a inmil lo hle. He defect hi packaging printing-ah a awm fo a, chutah chuan solid color area lian tak tak a tam hle.
A chhan awm thei: .
Optimize dan tur:
9. Filling in .
Hman dan tur:
Print chhunga thil chiang tak tak te chu ink tam lutuk nen a khat a, chu chuan thlalak blur, low-resolution image a thlen thin.
Possible influence:
filling in hian design intricate emaw fine text emaw quality chu nasa takin a tichhe thei a, chhiar theih loh emaw hriat theih loh emaw a siam thei a ni.
A chhan awm thei: .
Optimize dan tur:
Cylinder leh substrate inkar pressure chu lighten rawh.
Ink viscosity dik tak enfiah la, chutiang chuan anilox cell volume chu siamrem rawh.
10. Bridging .
Hman dan tur:
Design element hrang hrang, a hrana awm reng tur connect .
Ink tam lutuk vangin, unintended connection siam a ni.
Possible influence:
Bridging hian detail hloh a thlen a, a design tum chu a tichhe thei bawk.
A chhan awm thei: .
Optimize dan tur:
Pressure lighten la, ink transfer chu uluk zawkin regulate rawh.
Ink hman tur atan anilox cell volume dik tak enfiah rawh.
11. Pinholing .
Hman dan tur:
Spot te te, pinhole ang chi te chu substrate-ah a lang thin.
Possible influence:
Pinholing hian solid color print a tibuai a, a bik takin color block lian zawkah a langsar hle.
A chhan awm thei: .
Optimize dan tur:
Anilox roller chu print hmain uluk takin silfai hmasa phawt ang che.
Ink drying speed siamrem la, substrate surface consistency chu enfiah rawh.
12. Print bawlhhlawh .
Hriat dan:
Specks, bawlhhlawh, emaw leivut chi hrang hrangte chu ink chhungah an dah a, bawlhhlawh emaw, speckled emaw a siam a ni.
Possible influence:
Dirty prints hian image quality a ti tlem a, a bik takin high-resolution area, product label emaw packaging emaw-ah a tichhe nasa hle.
A chhan awm thei: .
Optimize dan tur:
13. Ghosting .
Hman dan:
A faint, a duplicated image chu print tum bulah a rawn lang a.
Possible influence:
Ghosting hian distracting, unprofessional look a siam a, a bik takin detailed emaw multicolored print-ah chuan.
A chhan awm thei: .
Optimize dan tur:
14. Slurring .
Hman dan tur:
Ink smear emaw blur emaw substrate kal dan lam hawiin, slurred image siam rawh.
Possible influence:
Slurring hian image clarity a ti tlem a, fine details chhiar a harsa hle.
A chhan awm thei: .
Optimize dan tur:
15. Voids .
Hman dan tur:
Image-ah hian unprinted gaps emaw voids emaw a lang a, chu chuan print inmil lo a siam a ni.
Possible influence:
Voids hian print integrity a tichhe a, final production atan a tha lo hle.
A chhan awm thei: .
Optimize dan tur:
Flexographic printing defects pumpelh dan tur general guide .
Flexographic printing defect hian thil siam chhuah a tibuai thei a, print quality a tichhe thei bawk. Heng thilte hi tih tlem nan Flexo printing-a chhiatna awm fo tur venna atana he kaihhruaina kimchang tak hi zawm rawh.
1. Printing pressure dik tak vawng reng rawh .
Engvangin nge: Plate, cylinder leh substrate inkar pressure nasa lutuk hi dot gain, halo, leh feathering ang chi defects thlentu lian ber pakhat a ni.
Solution: 'kiss' impression technique hmang la, chutah chuan plate chuan substrate chu a rawn tawk ang. Over-impression awm loh nan pressure settings check leh calibrate fo thin ang che.
2. Ink viscosity leh pH level mumal tak neih theih a ni.
Engvangin nge: Ink viscosity dik lo hian dot gain, mottling, leh pinholing tam lutuk a thlen thei a, pH level dik lo chuan ink adhesion leh color consistency a nghawng thei bawk.
Solution: Print run chhung hian ink viscosity leh pH level te chu enfiah leh siamrem fo tur a ni. Viscosity meter hmang la, ink chu a inhmeh tawk em tih enfiah rawh.
3. Anilox rollers te chu tihfai fo thin ang che .
Engvangin nge: Anilox rollers bawlhhlawh emaw, hnawh khat emaw chuan ink transfer-naah harsatna a thlen a, pinholing, mottled images, leh print bawlhhlawh ang chi defect a thlen thin.
Hrehawmna chinfel dan: Cell integrity vawng reng turin anilox rollers te chu tihfai dan tur leh hmanraw dik tak (manual, ultrasonic, or chemical cleaning) hmanga tihfai dan pangngai kalpui tur.
4. Calibrate leh align printing plate te .
Engvangin nge: Plate-a misaligned emaw, mount tha lo emaw chuan misregistration, blurry prints, leh color shift a thlen thei.
Solution: Print hmain plate te alignment leh registration dik tak neih a nih leh nih loh enfiah hmasa phawt tur a ni. Color leh design hrang hranga alignment guarantee turin mounting technique leh tools dik tak hmang rawh.
5. Gears enfiah leh enkawl leh press components .
Engvangin nge: gear chhe tawh emaw, dik lo taka meshed emaw chuan gear mark emaw banding emaw a thlen thei a, chu chuan print quality inang lo tak a thlen thei.
Solution: Gear leh press component dangte enkawlna mumal tak neih thin ang che. Moving parts te chu lubricate la, a chhe tawh em tih enfiah la, gear chhe tawh zawng zawng chu thlak leh rawh.
6. Substrate quality leh faina enkawl dan enfiah .
Engvangin nge: Substrate-a bawlhhlawh, leivut emaw, bawlhhlawh emaw ang chi hian print bawlhhlawh leh feathering ang chi chhiatna a thlen thei.
Hrehawmna chinfel dan: Substrate chu hmun thianghlim leh leivut awm lohna hmunah dah tur a ni. Substrate chu print hmain enfiah la, lei chung lama bawlhhlawh awm lo turin enfiah rawh.
7. Solvent-resistant elastomer sleeves hmang rawh .
Engvangin nge: Ink leh solvent aggressive tak tak a awm avanga plate emaw cylinder emaw a lo hring chuan doughnut leh filling in ang chi defect a thlen thei.
Solution: Solvent-resistant elastomer sleeves-ah switch la, chu chu a hring lo zawk a, hun kal zelah dimensional stability a vawng reng bawk.
8. Control web tension .
Engvangin nge: Web tension dik lo chuan substrate a inzawm loh emaw, a inzawm loh emaw chuan misregistration, slurring, emaw skip-out defects a thlen thei.
Solution: Print run chhung zawngin web tension chu a inmil em tih enfiah rawh. Tension control system hmangin a tul angin tension chu enfiah leh siamrem theih a ni.
9. Drying speed tha ber ber vawng reng rawh .
Engvangin nge: Drying speed dik lo hian pinholing, feathering, leh ink adhesion tha lo ang chi defect a thlen thei.
Solution: Ink type leh substrate nena inmil turin drying speed chu siamrem rawh. Airflow leh temperature setting dik tak siam la, a rang lutuk emaw, a slow lutuk emaw a nih loh nan.
10. Press enkawlna mumal tak kalpui thin .
Engvangin nge: Flexo press te hi complex machine an ni a, mechanical issues te chu defect awm thei tur ven nan regular upkeep an mamawh a ni.
Solution: Maintenance schedule pangngai siam la, chutah chuan press component zawng zawng inspection, lubrication, cleaning, leh calibration te a awm a, chu chuan machine chu a kal tluang reng theih nan leh beisei loh taka a tlak loh nan a pui ang che.
Tawpna
Flexographic printing defects hi a harsa thei hle a, mahse uluk taka enkawl leh proactive maintenance a awm chuan thil tam zawk chu ven emaw siamthat emaw theih a ni. Heng 15 common flexo printing defects te, an chhan te, leh a siamthat dan te hriatthiamna hmang hian print quality i ti tha thei a, downtime i ti tlem thei a, productivity i ti sang thei bawk.
Flexo printing defects hriatchhuah emaw chinfel emaw harsatna i neih? Assist turin kan rawn kal a ni. Kan specialist te chuan engtik lai pawha thurawn pe thei tur leh thlawp turin an inpeih reng a ni. Professional support tam zawk neih theih nan leh hlawhtlinna chang turin min rawn biak theih reng e!
FAQS:
1. Eng thilin nge flexo printing-ah dot gain nasa lutuk?
Dot gain tam lutuk hi a tlangpuiin printing plate leh substrate inkara pressure tam lutuk vang a ni. A dangte chu ink viscosity dik lo, plate hring, leh anilox cell volume sang te a ni. Pressure tihtlem leh ink consistency enkawl hian dot gain control a pui thei a ni.
2. Engtin nge ka print-ah hian gear mark emaw banding emaw ka siam theih ang?
Gear marks (banding) hi a tlangpuiin gear chhe tawh emaw, meshed dik lo emaw atanga lo chhuak a ni tlangpui. Maintenance mumal tak, lubrication dik tak, leh printing pressure siamrem hian heng defects te hi a thlen theihna tur a ti tlem thei a ni. Gears te chu wear a nih leh nih loh enfiah a, a tul huna thlak te pawh a pawimawh hle.
3. Flexo printing-a halo effect awm chhan hi eng nge ni?
Halo effect hi a tlangpuiin printing cylinder-a pressure nasa lutuk avanga lo awm a ni a, chu chuan ink chu a design tum aia tam a theh darh a ni. Pressure tihtlem leh cylinder-to-web speed alignment dik tak enkawl hian he thil hi a chinfel sak fo ang.
4. Engtin nge ka print-ah ink feathering ka ven theih ang?
Feathering hi ink chu a tum ber atanga a darh chuan a lo awm thin a, chu chu pressure tam lutuk emaw, substrate bawlhhlawh emaw avanga lo awm thin a ni. Chutiang a nih loh chuan pressure chu siamrem la, image carrier chu tifai la, substrate chu bawlhhlawh awm lohna hmunah enfiah rawh.
5. Flexo printing-ah hian eng thilin nge misregistration a thlen thei?
Misregistration hi printing plate alignment dik lo, web tension inmil lo emaw, cylinder-a wear emaw avanga lo awm a ni. Hei hi siamthat nan plate te chu recalibrate la, web tension dik tak siam la, cylinder emaw plate emaw chhe tawh zawng zawng chu thlak leh rawh.
6. Engtin nge ka print-a pinholing defect awm chu ka tihbo theih ang?
Pinholing hi alilox rollers bawlhhlawh emaw ink drying rang lutuk vang a ni fo thin. Anilox rollers te chu uluk takin silfai la, ink viscosity siamrem la, drying speed te chu ti hniam la, ink transfer tha zawk leh pinhole te tihbo nan.
7. Flexo printing-a print bawlhhlawh tihtlem nan eng step nge ka lak theih ang?
Print bawlhhlawh hi bawlhhlawh, bawlhhlawh, emaw ink particle drying ang chi bawlhhlawh avanga lo awm a ni fo thin. Press components te chu tifai fo la, static electricity control la, he defect awm loh nan press room environment thianghlim tak enkawl bawk ang che.
