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Prevent Coating Defects: Essential Solutions for Flawless Finish

Language: English
Length: 180 min
Sep 30, 2025 03:00 PM
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Course Description

This comprehensive two-part course will help you solve any of your coating film defects faster (pinholes, orange peel...) by understanding their root causes and how to prevent them using smart science.

Expert Jochum Beetsma will address the reasons of such defects, with easy-to-apply solutions & cost-effective formulation strategies.

What to expect in this two-part course?

  • Part 1 (90 min)- Understand basic physical chemistry & analyze the causes of defects (pigment mobility, gradients in surface tension...)
  • Part 2 (90 min)- Find practical solutions for each real-life case (more thinking, less trials)
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Jochum Beetsma
Jochum Beetsma
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Jochum Beetsma graduated in physical chemistry from the University of Groningen. He worked at PPG on the development of Industrial Coatings and at DSM Coating Resins on Emulsion Systems, Powder Coatings, High Solids, Additives and complete formulations.
Since 2004 Jochum is independent consultant for companies in coating and ink industry. Innovative multinationals as well as small companies call in the help of Jochum when problems have to be solved, or, when assistance is needed in New Product Development.
He conducts in-company training programs and he is lecturer within the Dutch Coating Technology training program. Additionally, Jochum develops and conducts Paint Technology courses for Reed Business Education and for SpecialChem. He is member of the SpecialChem Expert Team.
Jochum is specialised in the field of New Product Development. He is certified as New Product Development Professional by PDMA, being the global leading organisation with respect to product development and innovation.

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Participants of this course includes

Why should you view this course?

Film defects (e.g., levelling, orange peel, pinholing, floating…) can ruin both the protective and aesthetic properties of coatings. Relying on a trial-and-error approach can waste precious time! Take cratering and crawling, for instance: they look alike but require different solutions. Join this course and:

  1. Resolve your film defects faster by correctly identifying the issue (cratering, pinholing, crawling, floating…) and understanding its root causes.

  2. Learn to prevent film coating problems by applying physical chemistry principles effectively (Gibbs energy, surface tension, etc.).

  3. Develop simpler, more cost-effective formulations by avoiding unnecessary additives in your paint or ink system.

Who should join this course?

  • Coatings and Inks formulators/developers who need to solve and prevent film coating defects faster by better understanding and applying the science behind these defects.

  • On purchasing the course, you'll get access to:

    • Part 1 - Live Course on 30th September 2025
    • Part 2 - Live Course on 30th October 2025
  • This course is suitable for advanced level proficiency
    Advanced
Questions you will be able to answer after this course:

  1. Why do I keep seeing orange peel, pinholes, or craters even when my formulation seems right?

  2. Is this air entrapment, poor substrate wetting, or an issue with my additives?

  3. How do I speed up my defect diagnosis and resolution process to avoid production delays?

Course Outline
The course curriculum is divided into two parts, each designed to cover key topics on film coating defects and solutions:

Part 1 -

Basic Physical Chemistry behind the Coating Defects:

  • Gibbs energy
  • Surface tension
  • Wetting
  • Capillary pressure

Film Coating Defects: Characterization, Root Causes & Solutions:

  • Surface Tension Gradient Driven Flow
  • Levelling
  • Crawling
  • Paint Cratering
  • Orange peel paint defect

Discussion & Practical Exercises with Real Life Case Studies:

  • Marangoni Effect
  • Wetting Agent in Water-based Paint
  • Coating of Plastics
  • Orange Peel in Powder Coating
  • Matt Coatings
  • Matt 2-Component paint
  • Anti-Corrosive Primer for Steel
  • Loss of Adhesion

Part 2 -

Deeper Physical Chemistry behind the Coating Defects:

  • Surface tension (quick glance)
  • Wetting (quick glance)
  • Surface Tension Gradient Driven Flow

Film Coating Defects: Characterization, Root Causes & Solutions:

  • Floating
  • Hammer finish
  • Flooding
  • Picture framing
  • Poor edge coverage
  • Pinholes in paint
  • Popping
  • Foam

Real Life Case Studies - Solved:

  • Marangoni Effect
  • Wetting Agent in Water-based Paint
  • Coating of Plastics
  • Orange Peel in Powder Coating
  • Matt Coatings
  • Matt 2-Component paint
  • Anti-Corrosive Primer for Steel
  • Loss of Adhesion
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Prerequisites for this course

It would be beneficial to have some prior knowledge of:

  • Formulating coatings and a solid understanding of basic physical chemistry concepts, especially, gibbs energy, surface tension, wetting, and capillary pressure
30 min Q & As for this course
Interact directly with your tutor and clarify your doubts
  1. 30 mins per session for Questions and Answers
  2. Clarify your doubts.
  3. If your questions are not answered, dont worry you will recieve tutor’s reply via email after sessions.
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