exp 4115-1 for high speed ij and hybrid printing … high speed ij and hybrid printing functionality...

EXP 4115-1 For High Speed IJ and Hybrid Printing Functionality

July 22, 2016

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Strong Brands with Global Recognition

Fields of CompetenceProduct Groups Brands

Fumed Silica

Metal Oxides

Matting Agents

Specialty Silica

Rheology, reinforcement, thickening, inkjet, paper/film

UV protection, free flow, inkjet, film

Appearance: matting, soft feel, inkjet, security paper, films

Free flow, rheology, white extender, food & feed, inkjet, thermal, paper/film

Rubber Silica Filler, reinforcement

Evonik holds leading positions in all major silica markets

DispersionsScratch resistance, reinforcement, inkjet, paper/film

Available for Public Disclosure | Inside, To Get It Right

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US patent 8,039,105 has been granted for the process to prepare unique, novel precipitated silicas.

One of the outcomes is an engineered particle “EXP 4115-1”.

We expect this unique particle will offer customers highly desired print performance on multiple platforms along with High Speed inkjet printers. The inclusion of EXP 4115-1 into your coating allows excellent image quality with dye and pigment based inks.

But we believe there is more…

EXP 4115 – A Unique Silica


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EXP 4115-1 behaves more like an AEROSIL®

fumed silica

AEROSIL®, AERODISP®, SIPERNAT®

and EXP 4115-1

200 310EXP 4115W7520N

5 g Silica (dry)


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Typical Values EXP 4115-1

Properties and test methods Unit Value

Specific surface area (N2)Multipointfollowing ISO 9277

m2/g 180

DOA absorptioninternal method

ml/100g 235

Particle size, d50Laser diffractionfollowing ISO 13320

µm 0.3

Loss on drying2 h at 105°Cfollowing ISO 787-2

% < 7.0

pH value5% in waterfollowing ISO 787-9

- 4.8

Tamped densitynot sievedfollowing ISO 787-11

g/l 80


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The AERODISP® fumed oxide dispersion and/or EXP 4115-1 can simply be added into the size press formulation by itself or as a base coating for a subsequent online coating process. Silica as a co-pigment forms a very thin microporous layer.

High-speed Inkjet Printing PressesPaper Sizing Concept

10 µmSEM micrograph

Plain Paper

Ink-absorbing Microporous Layer

Without SiO2 With SiO2

Andwith highercoatweights (+6 g/m²), calendaring (hard or soft) results in a glossier surface while maintaining ink absorption.


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• Increased gamut and color brilliance

• Better color fixation (dye & pigment)

• Superb dry time and resolution

Commercial Printing + High Speed InkjetCoating+Silica Addition as a Co-Pigment

EXP 4115-1 provides absorption and a “spacer” functionality to increase ink absorption

Conventional coating formulations can be improved for digital printing

• Gloss, semi-gloss, satin and matte paper for High Speed Inkjet presses

• Applicable for Flexography, Offset Lithography and Thermography processes

• One coating for hybrid printing applications – multiple finishes

Guide formulation (modify as appropriate)

• 90 – 80 parts calcium carbonate (or other pigment)(ex: Hydrocarb® 90)

• 10 – 20 parts EXP 4115-1

• 5 – 20 parts binder (Poly-Vinyl Alcohol, Starch,Latexes and blends thereof)+ additives…(depending on requirements)

� 1 – 12 g/m2 coating weight (based on available coating equipment)


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Advantages in Comparison

• High gloss coatings

• Easy handling as dispersion

• High gloss to semi gloss coatings (depends on dispersion)

• Powder handling and dispersion technology requested

• Glossy, semi glossy, satin and matte coatings

• Economic alternative to fumed silica

• Easy powder handling

• Usable with starch and/or latexes (PVA not necessary)

• Matte coatings

• Cost efficient

• Easy powder handling

EXP 4115


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Print tests performed by Océ, Poing with Océ pigmented ink

Test Results Wiping Trials (PB 425)

100 pts Carbonate

90 pts Carbonate +10 pts AERODISP®

W 7330 N

90 pts Carbonate +10 pts EXP 4115-1

Note the reduction of pigment ink smearing with EXP 4115-1 with only 10 parts


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Wiping test Océ original pigment ink, printed on Epson SX 230

Ink Absorption – High-Speed Inkjet

100 Parts Hydrocarb 90

(GCC Type)

+10 Parts

W 7330 N

+10 PartsEXP 4115-1

+15 PartsEXP 4115-1


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Coating Data Propertiesas a function of pigment blend

HC 90 W 7330 N EXP 4115-1 EXP 4115-1

PartsPigment

100 10 ex. 10 ex. 20 ex.

Parts Mowiol 40-88

3 3 4 4

Solids 45% 45% 45% 45%

Viscosity 190 mPa s 215 mPa s 330 mPa s 830 mPa s

Solids 40% 40% 40% 33%

Viscosity 105 mPa s 125 mPa s 145 mPa s 70 mPa s


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Gloss Effects : EXP 4115-1 Incorporation Method

0

5

10

15

20

25

30

35

HC 90 10 p W 7330N

10 p EXP4115-1

HC 90 10 p W 7330N

10 p EXP4115-1

Gloss 60°

Gloss 85°

Direct Powder Incorporation (12 g/m2)

Pre-Dispersed Incorporation (10 g/m2)


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Hybrid printing

• Flexography (Packaging): Tailor your finish - matte or satin versions

• Offset Lithography (Transactional/Promo): The calendaring of a coated paper increases surface strength which is critical to run these high speed presses

• Thermography (Direct and Transfer): Silica is commonly used to provide thermal insulation, prevent pre-development of the leuco dyes and also maintain the cleanliness of the print head

Production flexibility

• EXP 4115 can deliver a matte, satin or semi-gloss finish to your product without sacrificing print performance. The coating can be calendared and/or super-calendared. This allows your production to use a single coating and achieve multiple finishes and reduces the need to prepare multiple coatings

• Apply as little as 1 – 3 g/m² at the size press for an enhanced commodity paper

• Need higher quality imaging? Apply 6 – 12 g/m² using rod, blade, gravure, curtain, film press, etc. coaters

EXP 4115-1 is a Truly Unique Silica


exp 4115-1 for high speed ij and hybrid printing … high speed ij and hybrid printing functionality...

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