Bill-

  What is meant by "the secret is the uniformity of the plasma"?
  Is this in time? -how the plasma density changes over the duration of
the plasma treatment.
  Or in space? -how the plasma varies throughout the chamber,
consequently exposing different portions of the material to different
plasma densities.
  Currently, I have variations in both during my plasma treatment and
I'm getting rather irregular results.  Any help would be apprecaited.
thanks.

Michael Vladimer

On 4/15/05, Bill Moffat  wrote:
> I need more information.  If you are trying to bond a flexible
> polyurethane film to glass, plasma bonding is easy.  I have used plasma
> times as low as 10 seconds and got terrific unpeelable bonds.  the
> secret is the uniformity of the plasma, and both surfaces need plasma
> treatment together.  The polyurethane needs the short time, with longer
> times it gets too hot. The glass can withstand much longer time and if I
> was trying to bond glass to glass I would use times like 5 minutes.