Gastcollege Pigments BASF 8 juni 2021.pdf

The coloration of Plastics Hogeschool Zuyd – June 8th 2021 Michiel Heijnen & Rob Hermans Industry Management, June 8th 2021 Internal  The coloration of plastics ▪ Sustainable? ▪ Why coloration? ▪ Which colorants? ▪ Dis...

The coloration of Plastics Hogeschool Zuyd – June 8th 2021 Michiel Heijnen & Rob Hermans Industry Management, June 8th 2021 Internal  The coloration of plastics ▪ Sustainable? ▪ Why coloration? ▪ Which colorants? ▪ Dispersion? ▪ Pigment or Pigment Preparation? ▪ Which product to choose for a blue cap? Active participation: go to www.menti.com Menti code 3878 7620 2 Internal  Plastics: sustainable or not? 3 Internal  Versatile in color, touch & shape Consumes less energy compared to Metal, glass & paper Lightweight & durable Plastics Sustainable or Not? Insulates against heat and cold Can be recycled Protects food & drinks and increases the shelf life Transports vital products, e.g. water, electricity Saves lifes in hospitals 4 Internal  The coloration of Plastics Why are plastics products colored ? 5 Internal 6 Internal 7 Internal  Key functions color in plastics Attractiveness Identification & safety Branding 8 Internal  How do we color plastics? What colorants are available ? Colorants Dyes Pigments watersoluble Inorganic Organic Solventsoluble HighPerformance polymersoluble Classical 9 Internal  Inorganic Pigments C Pigment Black 7 Carbon black TiO2 Pigment White 6 Titanium dioxide Fe2O3 Pigment Red 101 Iron oxide BiVO4 Pigment Yellow 184 Bismuth vanadate Pb(Cr,S)O4 Pigment Yellow 34 Lead chromate (Cr,Sb,Ti)O2 Pigment Brown 24 Chrome titanate Fe[Fe(CN)6] Pigment Blue 27 Prussian Blue CoAl2O4 Pigment Blue 28 Cobalt blue Na7Al6Si6O24(S3) Pigment Blue 29 Ultramarine blue 10 Internal  Organic pigments Pigment Red 254 DiketoPyrrolo-Pyrrole red Pigment Red 122 Quinacridone red 11 Internal  Organic pigments Pigment Blue 15 Pigment Green 7 Pigment Yellow 139 Phthalo blue Phthalo green Isoindoline yellow 12 Internal  Dye versus pigment 13 Internal  Dye versus pigment 14 Internal  The performance of various pigment classes Examples Light fastness Weather fastness 15 Internal  Mistakes due to the wrong pigment choice – examples 16 Internal  Mistakes due to the wrong pigment choice – examples 17 Internal  Mistakes due to the wrong pigment choice – examples 18 Internal  The nature of pigment particles Single Crystals Aggregates Agglomerate Brick Rod 19 Internal  Dispersion = breaking agglomerates agglomerate 20 Fully dispersed, surface increased Internal  Dispersion – why so important? Avoid visual Defects inor mechanical Film and Bottles issuesPoor in the Gloss plastic or fiber in molded objects 21 Internal Definition of shrinkage & warpage The Warping Phenomenon ▪ Warpage is simply distortion in the shape of the final molded article Warping is due to : ▪ Polymer crystallization ▪ Differential or non-uniformal (anisotropical) shrinkage ▪ Orientation of the polymer due to flow direction ▪ Different rates of cooling in the mould ▪ Internal stress and orientation are frozen in item before being able to relax enough 22 Internal  Examples of injection Molded failures Disc test to check warpage 23 Internal  The coloration of Plastics How? – Choices 1 2 Options Powder Pigment Pigment Preparations 100% pigment Mostly 50% pigment up to 65% in a carrier Material (e.g. a resin) Not dispersed Maximum dispersion Dusting Free flowing Fluffy Easy to meter 24 Internal  Pigment Preparations A pigment preparation consist of a pigment and a carrier material The pigment is fully dispersed into the carrier Pigment preparations are free-flowing and easy to meter They are the more efficient way to color when compared to their powder counterparts ◼ Better working conditions ◼ Brighter colors ◼ Higher throughput ◼ shorter change-over times & easier cleaning for production lines ◼ significant reduction in reworking production batches Sustainable Pigment level in pigment preparation is up to 50% - 65% The finished article (e.g. a bottle crate, bottle cap, tooth brush) only 0.1-1% 25 Internal  Fun or Dust? 26 Internal  The coloration of plastics – How? Pigment Preparation Powder Pigment 27 Internal 28 Internal 29 Internal Efficiency Gains Dosage Powder Speed Microlen® & dust avoidance Eupolen® Pigment ✓ 40% less weighing time ✓ Avoidance of dust collection system ✓ Clean filters ✓ 2% less waste ✓ Reduced risk contamination ✓ Improved working conditions 30 Sustainable Internal  Color changes Pigment Preparations bring significant downtime savings: ~ 55% Color changes can be made much faster Once more: ✓ Capacity gains ✓ Faster response times ✓ Easier planning ✓ Better working conditions 31 Internal  Improved coloristics: more chromatic colors & higher transparency Pigment Preparation Powder Pigment 32 Internal  Improved coloristics Pigment pigment Pigment Pigment preparation Preparation Full shade 0.2%* White reduction 1:10 with TiO2 (* powder pigment) 33 Internal  Which product to choose for coloring this cap? 2 3 34 Internal  Which product to choose for coloring this cap? Product Color PO- Non Light Food contact Price compatible warping fast compliant 1 Violet + + + + Low 2 Blue - + + + Medium 3 Blue + - + + Low 4 Blue + + + + High 5 Blue + + + - Medium 2 3 35 Internal  Product Color PO- Non Light Food contact Price compatible warping fast compliant 1 Violet + + + + Low 2 Blue - + + + Medium 3 Blue + - + + Low 4 Blue + + + + High 5 Blue + + + - Medium 36 Internal 37 Internal Selection requirements when formulating colors for plastics and fibers Sustainability ▪ Food contact Target end-use Processing technique ▪ Brand owners ▪ Injection Molding ▪ Carpet Fibers ▪ EH&S ▪ Heat resistance ▪ Pressure Pipes ▪ Recycling Colors & Effects ▪ Warping ▪ B&C Profiles ▪ Composting ▪ Yellow ▪ Sausage Films ▪ Extrusion ▪ Pdct Life Cycle ▪ Orange ▪ In- / Out-door ▪ Calendering ▪ Red ▪ Caps /Closures ▪ Blow-molding ▪ Magenta ▪ Spinning ▪ Violet Substrates ▪ Roto-Molding… ▪ PVC ▪ Blue, Green ▪ PO ▪ Transp. / opaque ▪ Eng. Plastics ▪ Effects ▪ High Heat EP’s ▪ Recyclates 38 Internal  Conclusion So, apart from selecting the right color blue, also important: ▪ Compatibility with PO ▪ Food Contact Compliance ▪ Low warping Product Color PO- Non Light Food contact Price compatible warping fast compliant 1 Violet + + + + Low 2 Blue - + + + Medium 3 Blue + - + + Low 4 Blue + + + + High 5 Blue + + + - Medium 39 Internal  Conclusion Economic Environmental Social S u s t a i n a b i l i ty Dimensions Many choices and challenges in the coloration of plastics! With the right and responsible decisions, we can serve common sustainability targets like: Better working conditions More recycling Light weight and durable products Suitable solutions for medical applications etc. and of course … Create a more colorfull world 40 Internal  Trainees in 2019-2021 Robin de Hoogh: “Naast een Yorick Bloebaum: “Mijn stage was erg super leuke tijd bij BASF heb ik Finn Vranken: “Leer- en Ryan Blijdenstein: “Bij BASF krijg je ook een leuke stage opdracht sfeervolle stage, waarbij ik ook leerzaam en interessant door een een stage opdracht direct uit het gehad, die zowel interessant een goede ervaring van het uitstekende begeleiding (vol humor) van Rob en andere collega’s van werkveld waaraan je zelfstandig op als uitdagend was. Al met al, bedrijfsleven heb opgedaan” HBO-niveau werkt. Bij vragen helpen een stage bij BASF is zeker Subject: degradable materials BASF. Deze bijzondere stage zal ik de collega's je maar al te graag” een aanrader!” niet snel vergeten. Subject: low warping materials Subject: product optimization Subject: compatibility in engineering plastics These trainees from Hogeschool Zuyd decided to plant a tree on the site as a souvernir 41 Internal  How a trainee started as a new employee 2021 Gloria Spijkers: “In 2016 heb ik stage gelopen bij BASF. Samen met een betrokken en warm team heben we gewerkt aan het vervangen van additieven in pigmentpreparaten. Toen onlangs de vacature vrij kwam voor Product Development Engineer, hoefde ik niet lang te twijfelen. De interesse in pigmentpreparaten was tijdens mijn stage al gewekt en ik wilde graag deel uitmaken van dit team!” In dienst sinds 1 juni 2021 42 Internal