From: wddanie@my-deja.com
Newsgroups: sci.physics.plasma
Subject: RFQ: Moving mask for drum sputtering machine?
Organization: Deja.com


We are considering using a drum type sputtering machine to deposit a
coating on a long sheet of plastic material. We need to come up with a
moving mask system that will expose an area about .75x.75 in. . The
roll of material can be up to 24 in wide and 100s of feet long. A gap
between the parts of about .125 to .375 in. would be acceptable, and
hopefully enough to give the mask some strength.

We do this process now on an inline sputtering machine with a .25 thick
stainless plate with machined openings acting as the mask. This will
not work on the drum coater because the drum and the plastic are formed
on a 18 in. radius and would require that the mask be flexible.

Is it feasable to use a thin, flexible stainless belt ~24 in. wide with
a pattern of .75x.75 in openings cut into it as a flexible, moving mask
that would be wrapped around drive rollers to keep the mask in contact
with the drum?

Has anyone ever seen or built a system like this?

If feasable, I need to build a system like this and would prefer to buy
as much off the shelf as possible and would appreciate any referals to
vendors who could help do this task.

Thanks

William


RFQ: Moving mask for drum sputtering machine?


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