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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