EXP 4115-1 For High Speed IJ and Hybrid Printing Functionality July 22, 2016
Strong Brands with Global Recognition Product Groups Brands Fields of Competence Matting Agents Specialty Silica Appearance: matting, soft feel, inkjet, security paper, films Free flow, rheology, white extender, food & feed, inkjet, thermal, paper/film Rubber Silica Fumed Silica Filler, reinforcement Rheology, reinforcement, thickening, inkjet, paper/film Metal Oxides UV protection, free flow, inkjet, film Dispersions Scratch resistance, reinforcement, inkjet, paper/film Evonik holds leading positions in all major silica markets Available for Public Disclosure Inside, To Get It Right Public Page 2
EXP 4115 A Unique Silica 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 Available for Public Disclosure Inside, To Get It Right Public Page 3
AEROSIL, AERODISP, SIPERNAT and EXP 4115-1 EXP 4115-1 behaves more like an AEROSIL fumed silica 5 g Silica (dry) 200 W7520N 310 EXP 4115 Available for Public Disclosure Inside, To Get It Right Public Page 4
Typical Values EXP 4115-1 Properties and test methods Unit Value Specific surface area (N 2 ) Multipoint following ISO 9277 DOA absorption internal method Particle size, d50 Laser diffraction following ISO 13320 m 2 /g 180 ml/100g 235 µm 0.3 Loss on drying 2 h at 105 C following ISO 787-2 ph value 5% in water following ISO 787-9 Tamped density not sieved following ISO 787-11 % < 7.0-4.8 g/l 80 Available for Public Disclosure Inside, To Get It Right Public Page 5
High-speed Inkjet Printing Presses Paper Sizing Concept 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. Ink-absorbing Microporous Layer Without SiO 2 With SiO 2 Plain Paper Andwith highercoatweights (+6 g/m²),calendaring(hard or soft) results in a glossier surface while maintaining ink absorption. SEM micrograph 10 µm Available for Public Disclosure Inside, To Get It Right Public Page 6
Commercial Printing + High Speed Inkjet Coating+Silica Addition as a Co-Pigment 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/m 2 coating weight (based on available coating equipment) EXP 4115-1 provides absorption and a spacer functionality to increase ink absorption Increased gamut and color brilliance Better color fixation (dye & pigment) Superb dry time and resolution Available for Public Disclosure Inside, To Get It Right Public Page 7
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 EXP 4115 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 Available for Public Disclosure Inside, To Get It Right Public Page 8
Test Results Wiping Trials (PB 425) Print tests performed by Océ, Poing with Océ pigmented ink 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 Available for Public Disclosure Inside, To Get It Right Public Page 9
Ink Absorption High-Speed Inkjet Wiping test Océ original pigment ink, printed on Epson SX 230 100 Parts Hydrocarb 90 (GCC Type) +10 Parts W 7330 N +10 Parts EXP 4115-1 +15 Parts EXP 4115-1 Available for Public Disclosure Inside, To Get It Right Public Page 10
Coating Data Properties as a function of pigment blend Parts Pigment Parts Mowiol 40-88 HC 90 W 7330 N EXP 4115-1 EXP 4115-1 100 10 ex. 10 ex. 20 ex. 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 Available for Public Disclosure Inside, To Get It Right Public Page 11
Gloss Effects : EXP 4115-1 Incorporation Method Pre-Dispersed Incorporation (10 g/m 2 ) Direct Powder Incorporation (12 g/m 2 ) 35 30 25 20 15 Gloss 60 Gloss 85 10 5 0 HC 90 10 p W 7330 N 10 p EXP 4115-1 HC 90 10 p W 7330 N 10 p EXP 4115-1 Available for Public Disclosure Inside, To Get It Right Public Page 12
EXP 4115-1 is a Truly Unique Silica 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 supercalendared. 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 Available for Public Disclosure Inside, To Get It Right Public Page 13