Conformal Coating Removal and Stripping part of Subcontract Conformal Coating Service

SCH offer a conformal coating strip and removal service for customers who want conformal coatings removed from printed circuit boards (PCBs).

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

SCH specialise in removal and stripping of all conformal coatings  including Humiseal 1B31, 1B73, 1R32, 1R32A2, 1A33, 1A68, Electrolube HPA and SCC3 and Dow Corning Silicones such as 2577.

Click for further information on the conformal coating service.

Click for the video for the WS100 Conformal Coating Wet stripping System.

Click for the brochure for the WS100 Conformal coating Wet Stripping system.

Stripping of Humiseal Conformal Coatings Using the WS100 Conformal Coating Wet Removal System

The removal of humiseal conformal coatings such as 1B31, 1R32A2, 1B73 and 1A33 can be completed using the WS100 Conformal coating wet stripping system.

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

The WS100 Conformal coating Stripping System has been designed for complete removal & stripping of conformal coating from circuit boards.

The WS100 consists a workstation of four tanks contained behind a safety screen, filled with appropriate stripping materials for the conformal coating material to be removed.

The principle of operation is that the circuit board to be stripped is manually placed by the operator in the first of the tanks for initial ‘rough’ removal and softening of the coating. Each tank has a rinse pipe and solvent pump fitted for gentle circulation and rinsing of the fluid and the operator working behind the safety screen is able to gradually remove the majority of coating, leaving a small amount of residue remaining.

Click for the video for the WS100 Conformal Coating Wet stripping System.

Click for the brochure for the WS100 Conformal coating Wet Stripping system.

Removal of Conformal Coating made Easy on Video

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

Click for the video for the WS100 Conformal Coating Wet stripping System.

Click for the brochure for the WS100 Conformal coating Wet Stripping system.

Conformal Coating Removal Video Using the WS100 Wet Stripping System

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

The WS100 Conformal coating Stripping System has been designed for complete removal & stripping of conformal coating from circuit boards.

The WS100 consists a workstation of four tanks contained behind a safety screen, filled with appropriate stripping materials for the conformal coating material to be removed.

The principle of operation is that the circuit board to be stripped is manually placed by the operator in the first of the tanks for initial ‘rough’ removal and softening of the coating. Each tank has a rinse pipe and solvent pump fitted for gentle circulation and rinsing of the fluid and the operator working behind the safety screen is able to gradually remove the majority of coating, leaving a small amount of residue remaining.

Click for the video for the WS100 Conformal Coating Wet stripping System.

Click for the brochure for the WS100 Conformal coating Wet Stripping system.

Conformal Coating Stripping and Removal Technical Bulletin

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

Removal of conformals coatings such as 1A33, 1R32A-2 and 1B31 can be easy with the WS100 Wet Stripping system from SCH.

SCH have a technical bulletin on conformal coating removal available.

Click 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.

De-masking of conformally coated PCBs made easy

SCH have a technical bulletin on de-masking conformal coated boards on its website.

Click for further info on conformal coating de-masking.

Conformal coating Removal made easy

Removing conformal coatings 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 here for further information on conformal coating repair.