The Coating and Graphic Arts Virtual Event

The Coating and Graphic Arts Virtual Event

Webinar
Tuesday, September 01, 2020 to Tuesday, September 01, 2020

PaperCon 2020 may have been postponed but we have three members of the Coating and Graphic Arts Committee that are going to present to you virtually the C&GA track that was queued up for 2020.

11AM – 1:45PM pre-recorded

The Coating and Graphic Arts Virtual Event brings you the presentations of Tony Lyons, Ethan Glor and Brian Einsla.

Tony Lyons will be discussing how the desire for more sustainable packaging has led to the development of fiber based packaging materials. Aqueous coatings are a pathway to improve the recyclability of these materials. Pigments used in these coatings can improve the performance of the coating and reduce cost while further improving the recyclability. Mineral Pigments are also considered to be compost neutral. This presentation will be a review of the pigments used in these barrier coatings. He will also provide examples of how the various pigments may perform in a barrier application.

Ethan Glor will focus on the theory of bimodal spherical packing and demonstrates the predictive nature of packing models on the properties of coating systems containing Hollow Sphere Pigments (HSPs) of two different sizes. He will also examine conditions where the model fails by examining the effect of particle size on coating strength in systems.

Finally, Brian will summarize the efforts in testing by evaluating particle size and void fraction along with many coating parameters. Including level of addition, binder chemistry and blends of two HSPs. Brian will also discuss his surprising finds using different binder chemistries.

Q & A to follow.

Register for this event!

The Coating and Graphic Arts Virtual Event brings you 3 presenters in 1 as you will hear from Tony Lyons, Ethan Glor and Brian Einsla. 

 

11AM – 1:45PM pre-recorded

Advances in Coating Pigment Applications: Pigmented Aqueous Barrier Coatings

The desire for more sustainable packaging has led to the development of new packaging materials that are fiber based. Aqueous coatings are a pathway to improve the recyclability of these materials. Pigments used in these coatings can improve the performance of the coating and reduce cost while further improving the recyclability. Mineral Pigments are also considered to be compost neutral. This presentation will be a review of the pigments used in these barrier coatings. The review will include the mechanisms by which they work and recommendations for pigments that are best to use for various barrier applications. This presentation will also provide examples of how the various pigments may perform in a barrier application.

Presented By: Dr. Tony Lyons 
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Dr. Lyons has over 36 years of experience in the areas of fluid mechanics, paper coating, paper finishing, and mineral pigments for paper coating, paper filling and other specialty applications. He received his Doctorate degree in Chemical Engineering from Lehigh University. He also holds a Bachelor and Master of Science degree in Chemical Engineering from the University at Buffalo. His work experiences include time with Westvaco and Repap Technologies, Inc. He retired in 2017 from Imerys after 25 years and established Paper Lyons LLC for the purpose of doing science and technology consulting. Tony is an adjunct professor at University of Maine and Western Michigan University. He has been an active member of TAPPI since 1985 and has volunteered for various leadership roles in TAPPI including election to the Board of Directors. He holds patents in coating pigments, coating applications, coated inkjet papers, agricultural applications and vapor barrier coating.

Register for this event!

The Coating and Graphic Arts Virtual Event brings you 3 presenters in 1 as you will hear from Tony Lyons, Ethan Glor and Brian Einsla. 

 

11AM – 1:45PM pre-recorded 

The Use of Hollow Sphere Pigments as Strength Additives in Paper and Paperboard Coatings Part One: The predictive nature of packing models on coating properties

Hollow Sphere Pigments (HSPs) are widely used at low levels in coated paper to increase coating bulk and to provide gloss to the final sheet. However, HSPs also provide an ideal system through which one can examine the effect of pigment size and particle packing within a coating due to their unimodal and tunable particle sizes. This seminar focuses on the theory of bimodal spherical packing and demonstrates the predictive nature of packing models on the properties of coating systems containing HSPs of two different sizes. This study also examines conditions where the model fails by examining the effect of particle size on coating strength in systems like thermal paper basecoats where the non-HSP component has a broad particle size distribution, and how these surprising trends can be used to generate better than expected thermal printing performance in systems with low HSP/Clay ratios.

Presented By: Ethan Glor

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Ethan Glor received his Ph.D. in chemistry from the University of Pennsylvania in 2016. He worked on examining the dynamics of polymer glasses in nano-scale geometries under the mentorship of Prof. Zahra Fakhraai. Ethan joined the paper coatings group at Dow where he has worked on projects spanning traditional paperboard, thermal paper, and barrier applications. In his free time, Ethan enjoys exploring new restaurants in Philadelphia, biking, and playing soccer.

Register for this event!

The Coating and Graphic Arts Virtual Event brings you 3 presenters in 1 as you will hear from Tony Lyons, Ethan Glor and Brian Einsla. 

 

11AM – 1:45PM pre-recorded

The Use of Hollow Sphere Pigments as Strength Additives in Paperboard Part 2: Optimization in Paperboard Formulations for Opacity and Strength

This report aims to summarize the efforts in testing the properties of coatings for paperboard utilizing hollow sphere pigments (HSPs). HSPs are known to effectively scatter light and replace TiO2 in architectural coating formulations. The effect of the particle size and void fraction was evaluated, along with many coating parameters, including level of addition, binder chemistry, and blends of two HSPs. The small HSPs that have optimized voids for scattering light showed equivalent strength to the TiO2-containing control. The strength data was surprising, particularly the improvement in strength for coatings containing large particle size HSPs. Because of this increase in strength, four parts of binder could be removed, which allowed for higher brightness while not compromising other properties, including hot melt glueability. These trends held true using different binder chemistries (styrene acrylic, vinyl acrylic, and styrene butadiene). Upon refining the formulations further, blends of two HSPs showed further benefit.

Presented By: Brian Einsla

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Brian graduated from Virginia Tech with a PhD in Polymer Science and Engineering. He started at Dow in 2008 as an applications scientist in the Paper Coatings business. He has held roles in R&D and technical service where he has developed binders with improved strength, hollow sphere pigments for thermal insulation and opacity, and barrier materials for food packaging.

Register for this event!

The Coating and Graphic Arts Virtual Event brings you 3 presenters in 1 as you will hear from Tony Lyons, Ethan Glor and Brian Einsla. 

 

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