Inspecting Conformal Coating on PCBs – Using the IB100 Conformal Coating Inspection Booth

The IB100 conformal coating inspection booth is an ideal work station for operators to inspect & finish circuit boards which have been conformal coated.

Fitted with dual UVA lamps behind a safety screen to allow solvents to be used safely in the booth, the IB100 offers 36W of ultraviolet light for maximum visual inspection & finishing performance without compromise to operator safety in operation.

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Humiseal UV40 conformal coating for UV cure process

HumiSeal’s new 100% Solventless UV Curable Conformal Coating, UV40, is an exciting innovation in UV curable chemistry that provides performance superiority over traditional UV curable products.

Being 100% solventless, the NEW UV40 curable conformal coating not only maintains the speed of cure and environment-friendly nature that is popular in today’s electronic fabrication, it also offers advantages not found in existing UV curable conformal coating products.

Click for further information on UV40.

Innovative HumiSeal UV40 provides:

Greater adhesion to a wide range of commonly used solder resists

Higher IR (insulation resistance) and MIR (moisture insulation resistance)

Resistance to a wider range of solvents

Greater flexibility at a wide range of temperatures

Does not become brittle at low temperatures

A truly reliable secondary (shadow area) moisture activated cure mechanism!.

Conformal Coating Training Room – For conformal coating training

SCH offer quality conformal coating training both on and off site.

Dedicated Conformal Coating Training Room

SCH have a dedicated training room for conformal coating courses and demonstrations of conformal coating equipment.

Using this facility candidates get complete hands-on experience with the conformal coating systems and processes without disturbance to production with a full range of systems available to ensure the best learning environment.

Conformal coating systems in the training facility include UV conformal coating curing, conformal coating dip, conformal coating spraying, manual conformal coating inspection and the new ACCIS Automated Conformal Coating Inspection System. Further, processes such as viscosity measurement, masking, de-masking, coating thickness measurement and solvent exposure monitoring can all be undertaken to give the maximum experience to the candidate.

Whether you plan to install a conformal coating process or currently use conformal coatings such as Humiseal we can help to develop or optimise your conformal coating process, to ensure you achieve the best performance. SCH can offer expert training in all areas of conformal coating including conformal coating application techniques, conformal coating material selection, optimisation, conformal coating health & safety and trouble shooting conformal coating problems.

Click here for conformal coating training page.

Conformal coating Equipment globally available

SCH have a full network of distributors to support their conformal coating equipment.

Click here http://www.conformalcoating.co.uk/distributors.php for further details

Ex-demo and reconditioned conformal coating equipment

SCH have ex-demo and reconditioned conformal coating equipment including a PVA spray conformal coating robot, conformal coating spray booth, conformal coating drying cabinet and a UV curing conveyor for cure of UV conformal coatings and other UV cure materials.

UV curing of conformal coating using UV100 conveyors

UV curing of conformal coatings is becoming increasingly important for high volume users in fields such as automotive and consumer electronics.

This increase in the popularity of UV curable conformal coatings is due to its rapid cure speed, level of processing ease, environmental friendliness and thermal cycling resistance, which have never before been achieved with UV conformal coating materials.

The UV100 UV Curing Conveyor System

The super fast curing times of UV conformal coatings mean that productivity in your conformal coating process can be massively increased.

This means you won’t have wet boards lying around susceptible to contamination from dust and debris, your lead times can be reduced and your customers get their products quicker!

To take advantage of these benefits you need a UV curing system like the UV100 UV conveyor. The UV100 range of UV conveyors are available in modular format:

Various cure widths available (standard 300mm width)

Modular Microwave or Arc lamp technologies available

Benchtop or floor standing conveyors

inline or SMEMA with belt, chain or pin edge conveyor

stainless steel or powder coated framwork

Click here for further information on the UV100 conveyor

UV40 Humiseal Conformal Coating -Instant Curing

 

HumiSeal’s new 100% Solventless UV Curable Conformal Coating, UV40, is an exciting innovation in UV curable chemistry that provides performance superiority over traditional UV curable products.

Being 100% solventless, the NEW UV40 curable conformal coating not only maintains the speed of cure and environment-friendly nature that is popular in today’s electronic fabrication, it also offers advantages not found in existing UV curable conformal coating products.

Click for further information on UV40.

Conformal Coating Training – For all types of conformal coating processing

Whether you plan to install a conformal coating process or currently use conformal coatings such as Humiseal we can help to develop or optimise your conformal coating process, to ensure you achieve the best performance. SCH can offer expert training in all areas of conformal coating including conformal coating application techniques, conformal coating material selection, optimisation, conformal coating health & safety and trouble shooting conformal coating problems.

SCH offer quality conformal coating training both on and off site.

Dedicated Training Room

SCH have a dedicated training room for conformal coating courses and demonstrations of conformal coating equipment.

Using this facility candidates get complete hands-on experience with the conformal coating systems and processes without disturbance to production with a full range of systems available to ensure the best learning environment.

Conformal coating systems in the training facility include UV conformal coating curing, conformal coating dip, conformal coating spraying, manual conformal coating inspection and the new ACCIS Automated Conformal Coating Inspection System. Further, processes such as viscosity measurement, masking, de-masking, coating thickness measurement and solvent exposure monitoring can all be undertaken to give the maximum experience to the candidate.

Click for SCH conformal coating training.

Global Distribution of Conformal Coating Equipment

SCH have a global network of distributors to supply, train and support their range of conformal coating equipment.

Click to the website for further information,

Removing Conformal coating from PCBs -stripping successfully!

Removing & stripping conformal coating materials like Humiseals acrylic’s 1B31 & 1R32 and polyurethane’s 1A33 is made easy using the WS100 Wet Stripping System.

 Removal of unwanted conformal coating from a PCB can be a simple process but depends on what conformal coat is to be removed or stripped from the PCB, the area of c0nformal coating to be removed on the PCB, where the conformal coating is and the type of components on the board.

Removal of unwanted conformal coating from a PCB can be a simple process or a very messy difficult job. It depends on what coating you need to remove, where the coating is and the type of components on the board.

 

The simplest coatings to remove are the acrylics. They have little chemical resistance and therefore are the easiest to remove with stripping fluids like Humiseal’s 1080. These coatings generally re-dissolve back into solution so a combination of soaking and gentle mechanical abrasion works well.

 

The simplest process for local area rework around a device for instance is a cotton bud soaked in stripping fluid and then rubbed gently across the area to be removed which will dissolve the coating. If the coating is fresh, it comes off in a matter of seconds whereas if the coating is old, having been coated many years ago, then it could take a little longer and patience is required!

 

If the area to be removed is larger or the whole board is to be stripped then submersion in a tank correctly selected stripping fluid and abrasion using a soft bristle brush will also dissolve the coatings. A word of warning must be given here. First, when submerging in a stripping material check there are no compatibility issues with the PCB. Stripping fluid could attack components and or writing on the boards occasionally although for acrylic coatings the 1080 stripper is not too aggressive.

 

The other issue that can be a major headache with full stripping of a board is that because the coating re-dissolves into the stripper, there will now be coating residue all over the PCB even where you didn’t want it. This can be a real problem with certain components such as low profile connectors! To remove these residues you will need several tanks of stripping fluid and the PCB will need to be fully rinsed in each, gradually flushing the residue out of the wrong areas. Once completed the PCB should then be cleaned in a cleaning system to remove any unwanted ionics.

 

These two processes also work for coatings such as polyurethanes and silicones although since they have chemical resistance they are tougher to remove. Correct stripping solution selection is critical and this is why Humiseal have several stripping products including 1063 for polyurethanes.

Click for further information on conformal coating removal.