There are two basic technologies to choose from:
1. Ultrasonic 2. Spray-in-air
Makers of ultrasonic stencils include:
Aqueous Technologies (that�s us): http://www.aqueoustech.com PMR: http://www.pmrsystems.com JNJ Industries: http://www.jnj-industries.com SmartSonic http://www.smartsonic.com
Makers of spray-in-air systems include: EMC: http://www.emcgti.com Austin America: http://www.aat-corp.com
Make your choices as follows:
Technology: Ultrasonic or Spray-In-Air
There are differences between ultrasonic and spray-in-air systems. Manufacturers will provide you with the benefits of their technologies. We use to manufacture spray-in-air systems but changed to ultrasonic technology about three years ago. We believe that ultrasonic technology is superior to spray-in-air with respect to cleaning ability and stencil safety. Other companies will disagree.
Discharge / Environmental: Filtered Drain, Evaporation, or Closed-Loop
With regards to environmental compliance, you have three choices:
1. Choose a system with an adequate filtration system and send effluent to drain.
2. Connect a stencil cleaner to an evaporator rather than connecting it to a drain. Most, if not all, manufacturers sell evaporators.
3. Choose a machine that is closed-loop (no drain). I prefer this method as this eliminates an evaporator and reduces both equipment purchase costs and operational costs.
Labor or Automation Semi-Automatic or Fully-Automatic
Where are you willing to spend your money? Semi-automatic stencil cleaners are actually faster than fully-automatic stencil cleaners. On the down side, they require an operator to become part of the process. Fully-automatic cleaning systems provide wash, rinse, and dry cycles (check with each manufacturer to verify their level of automation). Although the entire process is a little slower than semi-automatic machines, an operator simply loads a stencil and, presumably, is free be productive in other areas.
Prices for said machines vary widely. Semi-automatic machines range from $ 10,000 up to $ 25,000. Fully automatic machines (wash, rinse, dry) range from $ 25,000 to $ 45,000.
Search SMT-Net�s archive under �stencil cleaners� and you will find perhaps more information than you wanted!
I hope this helps.
Mike
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