Parylene Coating Equipment

Parylene Coating System in Production Environment

SCH now distributes a range of Parylene Machines to suit small, medium or large volume end users. We also distribute a full range of parylene dimers including parylene C and N. What is also unique is that we offer full training, installation and continuous support for your process throughout the lifetime of the machine as you require.

The Parylene Process is a vapour deposition process differing significantly to all of the other liquid conformal coatings available. It is the best conformal coating in the world and provides the highest level of protection from moisture, water and chemicals compared to all the other liquid chemistrie’s.

Standard Specification

• Manually Operated with a Vertical Deposition Chamber
• Interchangeable chambers for enhanced throughput.
• Clean room design to allow for Medical Applications
• Tangential monomer entry/exit
• Quartz-lined Pyrolyzer ( >750 ºC)
• Vaporizer temp range to 200 ºC
• Electro-pneumatic valves operation
• TC gauge for vacuum readout
• Programmable temperature with thermocouple
• Engineered to fit your application

KEY FACTS

• Parylene is the best conformal coating material that can be applied for protecting your products and circuit boards.

• This is because the coating is uniform in thickness (homogeneous) across the whole of the board

• You can waterproof a circuit board using parylene if you apply the coating to the right thickness

The Parylene Application Process

Parylene coating is applied through a specialised vapour deposition process at ambient temperature. Parylene polymer deposition occurs at a molecular level, where the coating literally grows one molecule at a time on the substrate surface, assuring entirely conformal and uniform layers of parylene conformal coating are applied. This process of building a homogeneous layer provides the maximum protection to a circuit board or part.

The process begins with the raw, granular material called the dimer which is heated under vacuum. The dimer is then reduced to a gaseous state in the vaporising chamber. The vapour is next drawn into the furnace and heated to very high temperatures (pyrolised) to allow for sublimation and the splitting of the molecule to a monomer. The gas is finally drawn into the room temperature deposition chamber, where the monomer gas deposits on all surfaces as a thin, transparent polymer film and the result is a parylene conformal coating uniformly deposited on the product.

Because the Parylene is applied as a gas, the conformal coating easily penetrates everywhere on components, providing complete and uniform coverage. Literally a conformal coating. . While Parylene coatings can range in thickness from hundreds of angstroms to several mils, a typical thickness is in the microns range.

Brochures

Parylene Machines Brochure