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Stencil Cleaners



Stencil Cleaners | 3 November, 2000

I am currently looking into buying a stencil cleaner. If there's anyone that has any information on an affordable cleaner please let me know.


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Re: Stencil Cleaners | 3 November, 2000

Smart Sonic

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Re: Stencil Cleaners | 3 November, 2000

Smart Sonic's Web Site is Tel: 1(800) 906-440-R Fax: 1(818) 909-6409

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Re: Stencil Cleaners | 3 November, 2000

John- We are curently running an Aqueous Technologies AQ201sc Stencil Cleaner with Zestron A200 Chemisrty and are really please with the unit and cleaning capabilities. Aqueous Technologies contact Joe Herr 800-218-8128. Zestron contact Andreas M�hlbauer 1-703-589-1198. Cal

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Re: Stencil Cleaners | 7 November, 2000

Hate to do this but, check the archives. This has been mentioned several times, I even wrote something on this.


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Re: Stencil Cleaners | 7 November, 2000

John, Depends on what you're cleaning (paste, adhesive, ink, etc..) and your process (do operators just dump a dirty stencil in and expect a clean one out, drying time, effect on the polyester). I could suggest a couple of name brand cleaners, but I've always found that like processes, every one seems to have a slightly different approach to achieve the same goal. I've used, bought and struggled with several of the top named stencil cleaners and the best advice is to try several of them. I know it may seem like a hassle, but there is nothing like struggling with a stencil cleaner that doesn't work, or is a maintenance nightmare. I would take a typical stencil to the stencil cleaners and smear the adhesive, paste, or ink on the stencil and see how well it cleans. Talk to you stencil maker about the cleaning solution you're considering. I've seen some cleaning chemicals discolor and even weaken the polyester of the stencil. Also, get a list of users and talk to them.

If you want, I could tell you some of the pitfalls with some of the stencil cleaners already mentioned, but this is not the forum for such debate. E-mail me direct if you like!

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Re: Stencil Cleaners | 7 November, 2000

Hello John,

Some determining criteria.

1. Examine what you are cleaning. Pastes, epoxies, inks, etc. Get the MSDS and samples ready and be prepared to forward them to the manufacturers for testing. They can respond with appropriate system and chemistry configurations. The epoxies may suggest a need for heat or more aggressive chemistry but you will want it tested by the manufacturer to prove the process. There are temperature limitations due to the stencil emulsions, yet heat is still a viable option for assisting your epoxy cleaning process.

2. Are you cleaning the paste and epoxy stencils in the same cleaner? If so, you may want filtration on the tanks. This can capture particulate in the wash and rinse tanks and decrease chemical consumption by as much as 80%. Given the expense of the cleaning chemicals, this is the option that will truely pay for itself.

3. Have your team review the local laws regarding waste water disposal. This may justify the purchase of an evaporator to cut disposal costs vs having the liquid hauled away. Note, this is where you will need to be careful of how you interpret the claims of manufacturers with "Environmentally safe" chemicals. A number of manufacturers are using environmentally friendly chemicals (review the MSDS), and you will want to stick with those chemicals wherever possible, some have even gone so far as to get certifications on them. Sure you can dump those chemicals down the drain out of the bottle, but once any cleaning chemical is used to clean solder pastes it is contaminated and cannot be dumped directly to drain.

Make the suppliers prove the process, then you can decide which one does it best for the least amount of money. Also, make sure the manufacturer is supplying you a good cleaner, not a cheap cleaner to tie it to their chemistry. For this you chould review the warranty clauses on chemical usage. Any intelligent manufacturer will want to approve the chemistry you are using in their system to sign off warranty approval but beware anyone who is only warranting their chemical to their machine. You may be left at the mercy of one chemical supplier.

Please feel free to email me if you have any questions or concerns.

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Mr Clean


Re: Stencil Cleaners | 7 November, 2000

Sorry about the name but I couldn't resist.

PMR Systems can run a test application for your review.

Website: Phone: 480-829-8170

Contact: Sean Douglas ext. 14

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Dave Rygwalski


Re: Stencil Cleaners | 8 November, 2000

We are using Austin American Technologies with Petroferm solutions and have excellent results using the same two types of solvents for cleaning stencils, adhesives and miss print boards. I average about five hundred cleaning cycles before we have the two six gallon tanks drained and new solvent put in. The waste solvent can be added to our waste wave solder flux drums.

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