Elder masking tapes give a clear advantage in conformal coating

Elder conformal coating masking tapes and dotsThe need to see the area being masked to ensure complete coverage and adhesion is paramount in ensuring that your conformal coating is masked correctly and does not creep under the masking tape. ET501G is not only the only commercially available ‘Silicone Free’ tape but is translucent allowing a clear view of what is masked and its full adhesion.

Elder supply ET501G as slit rolls or Dots and are able to convert to your required size’s in order to suit your every masking requirement.

Find out more about Elder and conformal coating masking materials here.

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Elder launch a new range of conformal coating masking tapes

Elder conformal coating masking tapes and dotsElder Tapes and Rubber, a division of Elder Engineering (Herts) Ltd, now offer a new range of electronic and conformal coating masking tapes and dots.

Our popular electronic and conformal coating masking materials can be stocked as master logs and then slit to your required width; from 3mm to the full master width.

Our materials are also available in dots and other shapes of standard sizes or custom sizes.

NO MINIUIMUM ORDER QUANTITIES.

Our product range includes:

  • ET400 – High Temperature Paper tape + rubber adhesive – Silicone Free
  • ET501G – Polyester Tape + rubber adhesive – Silicone free
  • ET600 – Polyimide tape + silicone adhesive – for general and high temperature applications.

Find out more about Elders NEW conformal coating tapes here.

 

 

Why hybrid processing of traditional conformal coatings and fluoropolymer, nanocoatings could improve your reliability

Traditional conformal coatings protect the circuit well if they are selected correctly. However, where the coating is not applied there is little or no protection.

Nano coatings (FC), ultra thin coatings of thickness <2μm, provide hydrophobic properties and don’t need masking.

The lack of need for masking is due to the coating thickness being so thin that there is no resistance to removing the material. This means the FC can coat all of the circuit including connectors and offer the protection of the coating.

However, this very fact means the FC coating is delicate to handle and may not provide the long term reliability needed like a traditional coating.

So, what if we could combine the two materials and have the properties of both?

The circuit board would have:

  • The long term protection due the traditional conformal coating
  • The hydrophobic nature due to the FC coating
  • Protection all across the circuit board

Nexus have been experimenting wth dual coating with both traditional conformal coatings and ultra-thin coatings.

water repelled from a connector due to FC coating square crop
A circuit board with both conformal coating and a fluoropolymer (FC) coating applied. The FC material in the connector repels the water droplet that would normally capillary into the component.

The results are extremely interesting for potentially increasing the protection of the circuit without adding a significant amount of cost to the process.

To find out more read the Nexus Article The Rise of the Hybrid Conformal Coating to find out.

Need help with your process?

Contact us at Nexus and we can help solve your issues.

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Troubleshooting your Conformal Coating Issues on the Production Line: Capillary Flow

Capillary 4 200x150When a problem occurs on the coating line and a circuit board is defective there is generally a good reason for the occurence. This week Nexus takes a look at Capillary Flow.

Capillary flow (or scavenging) in conformal coating processing is where the coating pulls or runs away from certain areas of a PCB to more favourable areas.

This is due to a combination of effects which leave a patchy finish on the surface of the board around the defective area.

There are several options to resolve this issue and prevent this occurring in production.

Find out more

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

Surface Modifiers: Are they a viable solution in conformal coating Processing? 

water dropletsThis week Nexus takes a look at the next generation of Fluorochemical “thin film”polymer coatings that have been entering the conformal coating market in the last few years.

These are coatings that are generally applied a lot thinner than traditional conformal coatings where typical dry film thicknesses are 1-2um.

These coatings have been around for a long time but they really are making traction in the industry.

We look at why this is happening now and the pro’s and con’s of these materials versus traditional coatings.

To read the article click go the Articles Section of the Members Area

Not a Member? Sign up to Nexus Now.

 

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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