Tag Archive | EMI

Shielding Medical Electronics from stray RFI / EMI signals can be life saving

The Medical Electronics Industry has to spend a lot of time ensuring their products do not fail due to cross talk from other electronic devices. Conductive Paints, varnishes that can screen signals from the source electronics, are widely used throughout the medical industry for this reason. Systems such as MRI and CAT scanners, de-fibrilators and ECG machines, as well as in body products such as artificial pace makers, can be coated in the protective coatings and ensure that no catastrophic failure can occur which leads to injury, misdiagnosis or death.

To find out more click EMI / RFI conductive shielding coatings  or contact us through

Telephone: +44 1226 249019

Email: sales@schservices.com

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Further Links of Interest

What is EMI/RFI Shielding?

Where do RFI / EMI Shielding Coatings and Paints fit in?

RFI / EMI Shielding Coatings: Where are they used?

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Where are Conductive Shielding Coatings used in the Transport Industry?

Conductive coatings are filled with metallic particles; the metal in the paint is conductive which therefore makes the product the paint is applied to conductive.

These shielding paints are used throughout the transport industry including automobile cabins, railway optical networks, runway lighting in airports, traffic surveillance systems, automobile control systems in the dashboard and GPS Systems. Without these shielding coatings it would be expected that catastrophic failures would occur with very serious consequences.

To find out more click EMI / RFI conductive shielding coatings  or contact us through

Telephone: +44 1226 249019

Email: sales@schservices.com

Click Contact Us to send us your requests.

Further Links of Interest

What is EMI/RFI Shielding?

Where do RFI / EMI Shielding Coatings and Paints fit in?

RFI / EMI Shielding Coatings: Where are they used?

We have no facilities for RFI Shielding Coating application? What can SCH offer?

SCH can offer any solution the customer requires.

We can offer a global subcontract coating service across north America, Europe and Asia, we can provide in house coating services where we set the facility up inside a company and complete the process for them or we can provide spray equipment, RFI shielding paints from MG chemicals and the training for the customer to process the boards themselves.

Click RFI Shielding Coating Application to find out more or contact us directly to discuss your needs.

Can I bond to my polycarbonate casing with a conductive shielding paint?

A conductive coating like a nickel paint can bond easily in general to a material like polycarbonate if it is solvent based. If it is water based then it will need a solvent based primer coating before application. This defeats the purpose of a water based conductive paint so better to stick to solvent based shielding coatings.

Click Shielding and Conductive Paint FAQs to find out further information on questions like What is EMI/RFI Shielding? , Where is EMI / RFI Shielding Paint used? and Why should you use EMI/RFI Shielding Coatings?

How do I spray the EMI / RFI Shielding Coating?

Follow proper techniques as outlined by the gun manufacture. For best results, keep the gun-to-surface distance constant. Move the gun in a straight line along the surface, avoiding arcing motions. Use spray-and-release strokes to avoid excess paint in one spot. If possible, start and end each stroke off the surface.

To apply the required thickness
1. At the recommended distance, spray a thin and even coat onto the surface. Overlap the previous stroke by 50% to avoid gaps in coverage.
2. Before spraying another coat, wait 2 to 5 minutes (depending on the product specifications). The delay avoids trapping solvent between coats.
3. Apply additional coats until the desired thickness is achieved.
4. Let dry for 5 minutes (flash off time) at room temperature.

If you would like to know more about RFI Shielding Paints or other products and services offered and supported by SCH Technologies, please do not hesitate to contact us

Telephone: +44 1226 249019

Email: sales@schservices.com

Website: Click

RFI EMI Shielding Coating Fundamental FAQ’s for the full range of information

EMI / RFI Shielding Coating Application Guide for information on application

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What does the surface resistivity value and method actually mean for RFI shielding coatings and is this the best method to assess the coating?

The “Ohm per square” unit is for sheet resistivity. It refers to the resistance of a film coating measured by electrodes placed at the surface of the coating. This is an industry standard method of presenting data for Shielding Paints. However, a better measurement is volume resistivity and customer trials.

If you would like to know more about the best method for assessment of RFI / EMI coatings or other products and services offered and supported by SCH Technologies, please do not hesitate to contact us via

Telephone: +44 1226 249019

Email: sales@schservices.com

Click What does the surface resistivity value and method actually mean for RFI shielding coatings for a full explanation of the topic.

Click Contact Us to send us your requests.