Read Part 3 of our Series, “Key fundamental challenges in conformal coating production”, and understand how Staff affect conformal coating production

Selective Coating HR CROP 3How do staff interaction with the production process and affect the results?

When considering staff we are talking about everyone involved in the process. That is operators, technicians, supervisors and process engineers. For staff then there are three key areas. These can be considered as training, operation and troubleshooting.

Nexus takes a look at each of the areas individually.

click Staff and their affect on Conformal Coating Production  to find out more

Read Part 3 of our Series, “Key fundamental challenges in conformal coating production” on how process control affects the line

Conformal Coated Circuit BoardPart 3 of this series of articles is launched this week where Dr Lee Hitchens examines how process control influences the production line.

Nexus has highlighted six critical areas that affect coating production and reduce performance on the line. These are the machines, materials, staff, process control, upstream processes and customer requirements.

In a series of six articles over the six weeks Nexus will attempt to highlight these six key areas and how the production line can be improved to achieve acceptable levels of defects.

Click here to Find out more…..

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Conformal Coating Materials and How they affect Production

Conformal Coating Bubble defectsNexus has highlighted six critical areas that affect coating production and reduce performance on the line. These are the machines, materials, staff, process control, upstream processes and customer requirements.

In a series of six articles over the next six weeks Nexus will attempt to highlight these six key areas for production and how the production line can be improved to achieve acceptable levels of defects.

This week Dr Lee Hitchens will consider the conformal coating material itself and how it affects the selective conformal coating production process.

Click here to Find out more…..

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Machines in Conformal Coating and How they affect Production

Conformal Coating Bubble defectsArticle by Dr Lee Hitchens

When I am asked to examine a conformal coating production line, and give my opinion on its effectiveness to produce the right work, I can be confronted with a wide range of setups. This can be from the most basic robotic system that coats a simple pattern and the operator has to control all the variables. Or, it can be a state of the art system with every known option present ultimately attempting to control the machine process. I say attempt because ultimately we are dealing with conformal coating liquids, people and the production environment. These are variables that affect the ability of the machine to do its job effectively and completely dependent on each of these factors.

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This article is one of six of the series, “What are the Key Fundamental Challenges in Conformal Coating Production to help you achieve Acceptable Production Targets?”

Conformal coating production is like any other part of the process. There are key fundamental challenges to be met to ensure targets and acceptable defect rates are set. However, understanding the variables that affect production and how these contribute to poor coating performance is critical to ensuring a high quality, efficient coating process.

Nexus has highlighted six critical areas that affect coating production and reduce performance on the line. These are the machines, materials, staff, process control, upstream processes and customer requirements.

In a series of six articles Nexus will attempt to highlight these six key areas for production and how the production line can be improved to achieve acceptable levels of defects.

To Read More Click Here….

What are the Key Fundamental Challenges in Conformal Coating Production to help you achieve Acceptable Production Targets?

Conformal Coating Bubble defectsConformal coating production is like any other part of the process. There are key fundamental challenges to be met to ensure targets and acceptable defect rates are set. However, understanding the variables that affect production and how these contribute to poor coating performance is critical to ensuring a high quality, efficient coating process.

Nexus has highlighted six critical areas that affect coating production and reduce performance on the line. These are the machines, materials, staff, process control, upstream processes and customer requirements.

In a series of six articles over the next six weeks Nexus will attempt to highlight these six key areas for production and how the production line can be improved to achieve acceptable levels of defects.

Click Here to find out more….

Ask The Expert: Dr Lee Hitchens, Nexus on Key Conformal Coating Material Challenges

“Out of all the Key Material Challenges I see on a regular basis, one of the most prolific is difficulties in adhesion to solder resist or to no clean residues and contaminants.“
 “It can be as basic as the coating just will not stick to the PCB or it runs away from areas on the PCB. At other times, it’s interpreting just how well the coating is stuck and determining if it’s good enough for the customer? Normally, this cannot be answered instantly and leads to some serious thinking!”

Visit the Nexus Associate Experts Section and read what other experts have to say about conformal coating material challenges.

Ask The Expert: Karl Hardcastle, SCH Services Ltd, Subcontract Conformal Coating Service on Key Conformal Coating Material Challenges

“One of the biggest issues we face is availability of the materials. As a subcontract coating house we generally have to use the coating selected by the customer. This can have dramatic issues occasionally when lead times on products can stretch into weeks or months and the customer wants the product now!”
“Conformal coating is one of the last processes on the PCB. Coating houses are normally making up the time lost in other areas. If you can plan the production to coincide with the material supply chain it’s a great help!”

Visit the Nexus Associate Experts Section and read what other experts have to say about conformal coating material challenges.

Ask The Expert: Gordon Watson, SMS Automation, Conformal Coating Equipment on Key Conformal Coating Material Challenges

“Our greatest Challenge is establishing good communication at an early stage with the key decision makers to determine the critical factors such as material specification, performance and requirements. Customers should also think of future needs when discussing conformal coating application systems rather than limit their choices to what is available on a standard machine.”

“Our skill is in combining machine building and automation skills with knowledge of the process of conformal coating and so it is important that we obtain a thorough understanding of our customers’ requirements and quickly formalise them into a  plan as quickly as possible.”

Visit the Nexus Associate Experts Section and read what other experts have to say about conformal coating material challenges.

Ask The Expert: Frank Hart, Sales and Marketing Director, PVA Conformal Coating Robotic Systems on Key Conformal Coating Material Challenges

“There has been much segmentation in the coating industry and this has driven chemical companies to the most prominent current trend in the marketplace, customization.  No longer is one coating chemistry versatile enough for the changing demands of the consumer.  It is no longer unusual to take a long standing coating material and have 8-10 versions of the formulation on the market.  Viscosity modifications, sometimes from 20 cps all the way to a non-slumping gel version, tend to be the most popular.  If you are looking to modify the flow characteristics, limit wicking into keep out areas, produce a dam, or control the solvent to resin ratio, there is typically a product tailored to your requirements.”

“Maybe the appearance of the coating is of greater importance to the end user.  This can be as radical as the physical color of the coating itself or maybe just the level of fluorescence under black light.  Some end users do specify the coating needs to be visible to the operator from a predetermined distance from the application, or perhaps they are using an automated AOI system.  Maybe your technology is proprietary to the point that an opaque coating protects your design in lieu of clear transparent materials.  Such requirements may drive an end user to request a custom formulation with these properties.”

“No matter what the request may be, from appearance to viscosity, to the cure mechanism or even changing the solvent carrier to a VOC friendly alternative, customizing formulations has become the norm more than the exception and chemical manufacturers are marketing these products as standard solutions.  End users should always work with formulators to assure that any modification to the original chemistry does not affect performance properties such as adhesion, protection, or curing. From an application standpoint, having your chemistry slightly altered may affect a variety of process parameters so always consult your material manufacturer and equipment manufacturer’s applications experts prior to making any formulation change.  In an automated process the changes may be as simple as modifying the robot speed or adjusting the path spacing to compensate for the new flow characteristics, or it may require a complete redesign of the fluid system and spray/dispensing valves….  But these factors can always be pre-qualified in a test laboratory.”

Visit the Nexus Associate Experts Section and read what other experts have to say about conformal coating material challenges.

Ask The Expert: Dave Prouse, Diamond SCH, Conformal Coating Equipment on Key Conformal Coating Material Challenges

“One of the biggest challenges is talking to a customer and finding that a conformal coating material and a conformal coating system has already been specified and the two are not easily compatible.”
“Linking the two in the design stages is critical in stopping the cost of the project multiplying by 2-3 times and causing untold misery and difficulties downstream.”

Visit the Nexus Associate Experts Section and read what other experts have to say about conformal coating material challenges.