flexo plate digital · siegwerk’s concentrate concept a grinding part disconnected from daily...
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Yendri Anto SFUV/Label BU Siegwerk Indonesia, PT.
FLEXO PLATE DIGITAL
SIEGWERK INDONESIA
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n Functions Ø Convey a message. Ø Provide protection. Ø Provide colour and decoration that attracts the attention of the
consumer Ø Help to differentiate a product from other brands.
n Colour is a useful vehicle for emotional selling, play gimmick effects in order to increase the product’s attractiveness.
n The first impression about a product on the shelf depends on its print appearance on the label that comes from ink.
Printing Ink -- Its Purposes & Functions
Printing Ink
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Printing Ink - A complex mixture of liquid or paste with colourants dissolved (dye) or suspended (pigment) in it, formulated to transfer and reproduce an image from a printing surface. Printing inks are normally make of the followings; * Colourants - pigments, dyes, and extenders. * Binding agents or varnishes - resin or resin solution. (natural and/or synthetic), plasticiser, etc. * Oil and solvents - Vegetable oil, mineral oil, solvents, etc. * Additives - Wax, stabiliser, catalyses such as photoinitiator, driers, cross-linkers, etc, defoamers, wetting agent, lubricants, etc. The nature of a printing ink is determined by the printing process as well as chemistry of the ink.
Printing Ink
Introduction – Different ink types, composition and drying n Oil based (conventional offset) n UV n Water based (liquid) n Solvent based (liquid)
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Conventional Offset
RESINS +
OXIDIZABLE COMPONENTS
MINERAL OILS
DRIED FILM
Filtration Several hours
Water based
RESINS
WATER
DRIED FILM
WATER
Penetration (paper…)
Solvent based
RESINS
SOLVENTS
DRIED FILM
SOLVENTS
UV
OLIGOMERS MONOMERS
+ PHOTO-
INIITIATOR
DRIED FILM
Fraction of a second
UV
100% DRY
4 main types of printing ink
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Printing Ink composition
Binders ~15 %
Additives 3–5 %
Solvents ~70 %
Pigments 10 – 12 %
Solvent based ink
Photoinitiatores 6-10 %
Additives 2-4 %
Monomeres & Oligomeres
~75 %
Pigments 12 – 16 %
UV ink
Additives 2-10 %
Resins & oils 65-80 %
Pigments 12 – 20 %
Offset ink
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Flexo printing, Anilox & HD Flexo
Flexo printing
“a method of direct rotary printing that uses relief image plates of rubber or photo-polymer material”
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FLEXO PRINTING
ANILOX CELL Anilox roll is a precision liquid metering device. Precisely controls volume of ink delivered.
n New innovation of surface geometry for anilox. n Excellent ink transfer vs conventional aniloxes,
avoid spitting, excellent density. n Ideally suited for High Definition Flexography!
www.apex-groupofcompanies.com
Example of Anilox – APEX Unifli GTT
v HD Flexo is a new standard with which flexographic printing is raised to the quality of offset and rotogravure.
v HD Flexo combines a high-resolution appearance of 4,000 dpi (conventional is ~2540 dpi) with unique anilox technology, thereby achieving Ø higher image definition Ø greater colour space, more contrast Ø better ink transfer. Ø Possible to use finer anilox rollers Ø Can reproduce the entire tonal range of offset print Ø achieve larger print runs.
v A steadily growing number of label and packaging specialists are working with this standardized pre-press.
HD Flexo at a glance
Siegwerk’s concentrate concept A grinding part disconnected from daily orders producing optimised batches of pastes
Master varnish (common binder)
Grinding
Pigments Mixing
Mastergrinds stored in bulk/ big containers
Blending
Mastergrinds Master varnishes
Master additives and/or raw materials
Finished inks and/or basic series (Master bases) to be easily produced on demand
A blending part focussed on basic finished inks
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Siegwerk Product Solution
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Siegwerk’s Products Supply in Asia Pacific
n SICURA – UV inks systems for offset, letterpress, flexo & screen for packaging & labels.
n TEMPO - Conventional paste ink systems for Offset printings.
n UNI - Water-based for Liquid food packaging, Corrugated pre & post-prints, and Narrow web labels.
n NC TOB – Complete ink systems for tobacco packaging.
n Complete ink systems for flexible packaging (PV series, etc…).
UV Flexo Printing Inks
SICURA-Flex Series 39-6 Ø Free radical curing UV-Flexo Ink
Ø Suitable for all flexographic label printing machines equipped with UV curing
Ø Excellent printability
Ø Enhanced Performance on porous substrates
Ø Fast drying
Ø High colour strength/Low viscosity
Ø Stable production printing viscosity
Ø Free of additives
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UV Flexo Printing Inks
SICURA-Flex Series 39-9P-SF Low odour UV-Flexo-Ink series with radical curing mechanism, developed especially for the food and pharmaceutical packaging. Whilst principally allowing the substitution of solvent based inks, this series offers both without having to make concessions on the wide spectrum of today’s sophisticated range of substrates.
Ø high quality print results
Ø economy in printing Ø Free of additives
Ø Recommended for the printing of Food packaging in UV-Flexo
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UV Screen Printing Inks
SICURA-Screen Series 78-3 Ø High-grade universal ink for a wide range of plastics
Ø Fast curing
Ø Glossy, brilliant colors
Ø Good printability and detail fineness
Ø Addition of hardeners or adhesive promoters not required on inline corona-pre-treated PP
Ø Compatible for combination-printing with series 39-6 (UV-Flexo), UV-Letterpress, UV-Waterless and UV-Offset. BUT NOT OVERPRINTABLE
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UV Screen Printing Inks
Screen White for combination printing L78A5UB7U8APJ UV RS SILICONE FREE Ø High-grade universal ink for a wide range of
plastics
Ø Fast curing
Ø Good printability and detail fineness
Ø Additive free
Ø Excellent adhesion
Ø Suitable for overprinted / combination-printing with UV-Flexo
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Safety Awareness
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§ Elimination of harmful and carcinogenic substances
§ High Purity of Raw material § Conformity to advanced regulations and consumer
expectation
§ Recipes and operations validated for HSE Standard
§ Specialized Centers of Excellence (CoE) for production - per family product.
§ Quality System, ISO certification
§ Sensorial and analytical measurements § Assess migration properties into food § Assessment of full chemical composition for
toxicology
Siegwerk‘s Good Manufacturing Practice is ... “Safety at All Steps“
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Siegwerk’s Intermediate System - Product Safety
INTERMEDIATE SYSTEM – CONCEPT
Know-how flow Production flow
HSE
HSE
HSE
Formulation of § Master grinds § Master varnishes § Master additives
Raw materials
Definition of § Master formulation § Application
properties § Fastness properties
CoC § TD § AT
CoC or AC § AT
Formulation of customer formulas (color matching)
CoC § TD
CoC § TD
Formulation guidelines
Formulation guidelines
Raw materials CoE
CoE
CoE or BC
Production of § Master grinds § Master varnishes § Master additives
Blending of customer links
Raw materials
Intermediates
Master formulas
Customer inks
Based on a limited number of intermediates, we can offer an unlimited number of tailor-made solutions
Number of ...
CoC – Center of Competency, CoE – Center of Excellence, BC – Blending Center. AC – Application Center, AT – Application Technology, TD – Technology Development
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THANK YOU THANK YOU