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Dan Griffin

Dan Griffin
HumiSeal Midwest Account Manager
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Prevent Conformal Coating Bubbles by Fixing Common Application Errors

Posted by Dan Griffin on Jan 31, 2024 10:34:28 AM

Bubbles. They can be a real challenge in any adhesive or coating, but they are particularly undesirable when covering electronics and printed circuit boards (PCBs) with fluid conformal coating material. The technical support engineers at Humiseal have over five decades of experience in support of PCB manufacturers. They report that bubbles within the finished film are the most commonly reported technical issue they receive.

In this brief article, we will discuss many of the causes as well as many potential solutions to the problem of entrapped bubbles.

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Topics: Conformal Coating Troubleshooting, bubbles

Toluene-Free Conformal Coatings: Alternatives to Aromatics

Posted by Dan Griffin on Dec 20, 2023 11:28:35 AM

Toluene and Xylene: solvents that have shown value and utility within the adhesives and coatings industries for decades. However, they often serve as a double-edged sword, offering superior solvent and drying capabilities but accompanied by some negative health and environmental impacts.

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Topics: Aromatic Free, toluene

Sharp Edge Coverage: Solving 3 of the Biggest Problems Facing Modern Conformal Coating Application

Posted by Dan Griffin on Sep 21, 2023 10:40:43 AM

Conformal coatings have a long and storied history with printed circuit boards. A good conformal coating protects PCB components from moisture, corrosion, contaminants, and additional PCB threats like vibration and thermal shock. Coatings are a complicated science, and there isn’t one best coating or application method for every job. These choices are dependent on the design, use case, and assembly of the PCB. For instance, manual brushing PCB coating material is a slow, tedious process; but for small batch applications, it’s quite cost-effective.

Regardless of the chosen method, there are fundamental application errors that can occur, leading to defects forming in the coating which ultimately limit the functional service life of the PCB.

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Topics: Conformal Coatings, Protection for PCB, Conformal Coating Troubleshooting

Maximum Durability and Flexibility: UV550 LED-Curing Conformal Coating

Posted by Dan Griffin on Jul 31, 2023 11:49:08 AM

Conformal coating technology is on a continuous path of improvement, and we're excited to say the latest step on that path just happened. UV550 is the most recent innovation from HumiSeal, continuing the trend of industry-defining capabilities in the conformal coating space. This is to be expected from the original inventors of conformal coating material. But what sets UV550 apart from the rest?

Let's discuss how the ever-changing requirements of the automotive and white market space fueled the thresholds this uv-curable material attains, especially with regard to its durability under the most extreme thermal and mechanical cycling conditions.  

 

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Topics: UV Curable (Type AR/UR), Conformal Coatings, UV Curing, UV550

UV Curable Conformal Coatings: THIN IS IN!

Posted by Dan Griffin on Jul 12, 2023 2:29:52 PM

HumiSeal development specialists have been designing high-performance, UV-curable conformal coatings for approximately three decades. Compared to legacy solvent-borne and silicone technologies, UV- curable coatings provide some unique properties that can be of great value such as- 

  • Nearly instantaneous, consistent curing 
  • Superb moisture and environmental protection
  • Little or no VOC content

These coatings also lend themselves well to high-speed and high-volume applications due to manufacturing advantages such as- 

  • Minimal WIP due to immediate cure capability 
  • Low material cost due to 100% solids chemistry
  • Smaller manufacturing footprint due to much smaller curing equipment
 
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Topics: UV Curable (Type AR/UR), conformal coating, conformal coating application, UV Curing

The Next Stage of Total PCB Protection: Sharp Edge Conformal Coatings

Posted by Dan Griffin on May 18, 2023 2:11:10 PM

We at HumiSeal are no strangers to conformal coatings; and if you’re reading our blogs, it’s likely you’re familiar with these coatings as well. The word “conformal” is descriptive of the function of the coatings which are expected to spread and conform evenly across all surfaces that are to be protected. This uniform and even distribution is necessary to protect delicate electronic components from things such as humidity, water, vibrations, and thermal damage (to name a few).

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Topics: Conformal Coatings, Conformal Coating Troubleshooting, Sharp Edge

Don’t Overlook Clean, Dry Air When Using Conformal Coatings

Posted by Dan Griffin on Apr 19, 2023 10:47:51 AM

We at HumiSeal would like to dedicate a bit of time and space to one of the most often ignored factors related to successful conformal coating processes: Clean Air.

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Topics: Protection for PCB, air quality

Unpacking the Rising Popularity of LED Curable Conformal Coatings

Posted by Dan Griffin on Dec 7, 2022 6:28:13 PM

The transition to LED curable conformal coatings is beginning to build momentum, beginning as a slow evolution and developing into a revolution of sorts. The driving forces behind this include: 

  • Improved processing equipment designs and availability 
  • Aging or outdated application equipment replacements 
  • Increasing range of LED curables commercially available or in development 
  • Rising labor, equipment, and energy costs  

If you and your organization are faced with aging equipment and higher costs, there isn't a better time to consider the potential advantages of LED curable conformal coatings

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Topics: conformal coating, Protection for PCB, UV Curing, LED curable conformal coating

Adhesives for Electric Vehicle Motors: Performance and Protection

Posted by Dan Griffin on Jun 14, 2022 10:04:30 AM

Chase Corporation, through our HumiSeal® and Resin Designs divisions, has spent the past decade preparing protection and reliability solutions for complex electronics. Notably, within the emerging EV market, we have identified needs within the assembly of EV motors where superior adhesion and protection are particularly critical.  

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Topics: Epoxy Adhesives, EV, Electric Vehicle, HumiSeal 2E25

Masking Before Parylene Conformal Coating

Posted by Dan Griffin on Oct 28, 2021 11:00:00 AM

Conformal coating with parylene is a very different process compared to coating with traditional solvent-borne or UV curable materials. Parylene coating has some advantages including

  • a very thin application profile,
  • uniform and complete surface coverage, and
  • generally excellent protection and minimal outgassing potential.

On the other hand, parylene coating also presents unique challenges such as

  • a significant investment in complex equipment,
  • batch processes that limit productivity and increases costs, and
  • the user’s inability to selectively control where the coating is applied.

It is this final challenge that we will concern ourselves with within the following discussion.

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Topics: Masking, UV92, Parylene Conformal Coating, Parylene process

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