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Ppi intro to inks
The document discusses different types of printing inks used in various printing processes. It describes the key components of printing inks including solvents, binders, colorants and additives. It then classifies printing inks based on viscosity, drying method and chemical nature. Specific details are provided about letterpress, offset, silk screen, flexographic and gravure inks as well as recommended viscosity for different processes. Processing steps like adjusting viscosity and adding solvents/extenders are also summarized.
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Ppi intro to inks
- 1. Printing Inks SolventsBinderColourant Additives DYEOR PIGMENT SELECTED FOR FASTNESS PROPERTIES PROPERTIES SUCH AS •HEAT RESISTANCE •ADHESION •GLOSS •LOW ODOUR •FLEXIBILITY •DURABILITY •PRODUCT RESISTANCE •HARDNESS TO DISSOLVE THE BINDER & GIVE GOOD WORKING PROPERTIES ON THE PRESS SPECIAL PROPERTIES •SCRATCH •SLIP •SCUFF PAINTCO PRINTING INKS MAKE THE RIGHT IMPRESSION
- 2. Printing Inks LIQUID INKSPASTEINKS PAINTCO PRINTING INKS MAKE THE RIGHT IMPRESSION CLASSIFICATION OF PRINTING INKS BY VISCOSITY LETTER PRESS SILK SCREEN FLEXO APPL. ROTOGRAV. APPL. OFFSET
- 3. DRYING OXIDATION DRYING EVAPORATION DRYING PAINTCO PRINTING INKS MAKETHE RIGHT IMPRESSION CLASSIFICATION OF PRINTING INKS BY DRYING UV/ EB CURING SYSTEMS CHEMICAL CURING/ DRYING 2 PACK SYSTEMS
- 4. CHEMICAL NATURE WATER BASEDSOLVENTBASED PAINTCO PRINTING INKS MAKE THE RIGHT IMPRESSION CLASSIFICATION OF PRINTING INKS BY CHEMICAL NATURE OIL BASED
- 5. PRINTING PAINTCO PRINTING INKS MAKETHE RIGHT IMPRESSION PRINTING PROCESS PASTE INKS WFT: 2-3 MIC PAPER, BOARD, CARTONS NEWS PAPER MAGAZINES LIQUID INKS WFT: 3-5 MICRONS INK JETPASTE INKS WFT: 2-3MIC PASTE INKS WFT: 12-50 MIC PAPER, PCB, CARTONS, POP, OPV, SPECIALITIES LIQUID INKS WFT: 5-8 MICRONS LETTER PRESS OFFSET SILK SCREEN FLEXO GRAVURE NON IMPACT PRINTING
- 6. PAINTCO PRINTING INKS MAKETHE RIGHT IMPRESSION TECHNICAL FEATURES: LETTER PRESS INKS: • PASTE INKS • OIL BASED • OXIDATION DRYING • USED FOR PAPER, BOARD AND LABELS • CAN BE RADIATION CURED • WFT: 2—3 MICRONS
- 7. PAINTCO PRINTING INKS MAKETHE RIGHT IMPRESSION TECHNICAL FEATURES: OFFSET INKS: • PASTE INKS • OIL BASED • OXIDATION DRYING • USED FOR PAPER, BOARD AND LABELS • CAN BE RADIATION CURED • WFT: 2—3 MICRONS • DRY OFFSET CAN BE USED FOR POLYSTYRENE CUPS • WEB OFFSET CAN BE USED FOR NEWS PAPERS
- 8. PAINTCO PRINTING INKS MAKETHE RIGHT IMPRESSION TECHNICAL FEATURES: SILK SCREEN INKS: • PASTE INKS • CAN BE OIL BASED/ SOLVENT BASED/ • CAN BE OXIDATION DRYING/ CHEMICAL DRYING • MOST VERSATILE PRINTING PROCESS • CAN BE RADIATION CURED • WFT: 12---50 MICRONS
- 9. PAINTCO PRINTING INKS MAKETHE RIGHT IMPRESSION TECHNICAL FEATURES: FLEXOGRAPHIC INKS: • LIQUID INKS • SOLVENT BASED & WATER BASED • EVAPORATION DRYING OR RADIATION CURED • USED FOR PAPER, KRAFT, LABELS, FILM AND FOIL • CAN BE RADIATION CURED • WFT: 3—5 MICRONS • DUE TO PLATE LIMITATIONS, NO HARD SOLVENTS LIKE KETONES AND HYDROCARBONS CAN BE USED • USUAL PRINTING VISCOSITY: 20 –22 SEC ZAHN CUP NO 2
- 10. PAINTCO PRINTING INKS MAKETHE RIGHT IMPRESSION TECHNICAL FEATURES: ROTOGRAVURE INKS • LIQUID INKS • WATER BASED AND SOLVENT BASED INKS • EVAPORATION DRYING, UV IS POSSIBLE • USED FOR PAPER, FILM, FOIL, ALUMINUM AND PUBLICATION PRINTING • CAN BE RADIATION CURED • WFT: 5—7 MICRONS • NO RESTRICTION ON SOLVENT USE ( OTHER THAN REQUESTED BY CONSUMER) • USUAL PRINTING VISCOSITY 14--16 SEC ZAHN CUP 2
- 11. PAINTCO PRINTING INKS MAKETHE RIGHT IMPRESSION INK PROCESSING SUPPLY INKS PRESS READY INK FLEXO 20-22 SEC GRAVURE 14-16 SEC ADD SOLVENT AS REQUIRED HIGHLY PIGMENTED VIS: 50 +/- 2 SEC STD INKS VIS 35 +/- 3 SEC PRESS READY INK FLEXO 20-22 SEC GRAVURE 14-16 SEC ADD EXTENDER TO GET REQD COL STRENGTH VIS: 40 +/- 2 SEC ADD SOLV AS REQUIRED
- 12. PAINTCO PRINTING INKS MAKETHE RIGHT IMPRESSION PROCESS FLOW CHART CHECK PROPERTIES EVERY HOUR CHECK SUBSTRATE TREATMENT IF OK –PRINT IF NOT OK, CHANGE SUBSTRATE AFTER 25- 35 MTS CHECK SHADE AND ADHESION IF ADHESION NOT OK CHECK TROUBLE SHOOTING GUIDE CHECK SHADE VISUALLY AND WITH SPECTROPHOTOMETER IF SHADE & ADHESION OK, CONTINUE PRINTING CHECK VISCOSITY, SHADE AND ADHESION EVERY HOUR IF REQUIRED ADJUST WITH FRESH INK AND SOLVENT