- February 26, 2015, Mark Miller
Nonwovens, fabrics, papers and membranes provide unique substrates for fluid coating applications. Depending on the final product needs, the fluid may need to be placed on top of the substrate, penetrate all the way through the substrate or some arrangement of the fluid between these two extremes. So what can you do to control fluid flow once the liquid is placed on the substrate? The keys lie in coating technique and understanding the wetting behavior of the fluid.
- January 30, 2015, Mark Miller
When a slot die is coating a fluid, does it care which way it is pointed? No, it does not. So why are different terms utilized when the same piece of equipment is pointing up in the air, down towards the ground, or horizontally towards the wall?
- October 17, 2014, Mark Miller
Developing a product in the fluid coating industries requires determination of raw materials to provide for the differentiated features of the product, but equally important is the process development associated with turning these raw materials into an effectively and efficiently produced item. Whether you are looking to develop an improved tape, label, battery, or optical film, understanding and optimizing the coating process is important. The larger this coating window the more latitude there is for success.
- September 18, 2014, Mark Miller
When it comes to slot die fluid coating, the mathematical equations that dictate flow are fundamental, but the details are complicated. The goal with understanding the math should be not to make things more complicated, but to simplify the understanding and lead engineers and operators towards common controls for adjusting at the coating line. So let’s do just that…
- August 12, 2014, Mark Miller
With the modern coating era upon us, the need to coat functional materials has grown exponentially. Whether you are looking to coat flexible electronics, solar panels, optical films, or energy storage devices, the need for fluids that provide transmission of energy is important. So how can fluids provide this superior performance? Particles.
- July 17, 2014, Mark Miller
Slot die coating technology is a function of the coating process, auxiliary system and fundamental technique. The decision to utilize a coating technology needs to be analyzed against these functions to determine best fit. In the era of clean, thin and precise converting operations, a customized coating system is necessary to have a technical edge. Building the system from the material up to the process sets the stage for a high precision tool designed around the process needs.
- June 17, 2014, Mark Miller
When describing fluid flow onto substrates to people not living in the world of converting operations is like trying to explain rocket science to a pig. Very few people ever wonder how the glue on tape is placed, or how plastic sheets focus light on a TV screen. I guess we are some of the lucky few!
- April 24, 2014, Mark Miller
Agglomeration is a dispersion issue that can cause headaches for coating operators. Fundamentally, an agglomerate is a collection of particles that stick together and create a larger particle that can get stuck in narrow gaps or cause coating defects. Why is this such an issue?