Josh,
I don't know your particular film as I'm using a different product
(Ordyl Alpha 900). However, the one I use is also pickey. I posted some
pics to the forum a while ago showing how I feed the laminator to avoid
bubbles. From what it sounds however I have the impression that the
particular laminator you are using is just too hot even in it's lowest
setting. The other thing is the applied pressure during lamination. My
solution was to try several different laminators and I ended up using
one where I was able to adjust the pressure of the rolls with screws
(had to loosen them quite a bit) and one that also works with pretty low
temperature setting. It took quite some experimentation to find the
propper setting but overall, off the shelf laminators apply too much
pressure and usually also are too hot.
HTH
Markus
joshdewinter schrieb:
>
> Hi
>
> MG Chemicals now sells a "Negative Photoresist Film" (product #416-
> DFR5) that I believe may be Riston.
>
> I have tried it several times now with mediocre results. The
> traces turn out good when they turn out. The problem I'm getting is
> actually getting the film to stick to the board uniformly before
> exposure.
>
> Someone suggested using water between the board and the film to
> allow rolling of any bubbles out from underneath with your thumb
> after positioning, then drying it in an oven at about 200 degrees for
> 10 min to get it to stick.
>
> They were right, it worked great...until I tried to dry it. Small
> mutations formed, sometimes in the form of lines, sometimes what look
> like small blobs. They aren't bubbles per se, but somehow there are
> areas of the film that appear to stick to the board at a deeper level
> than the surrounding film, or maybe they are melting and deforming.
>
> The manufacturer recommends using a laminator to apply the film,
> which I tried initially, but it appears to have the same problem. My
> laminator is adjustable heat, and I've tried from hi to low with
> similar results. I haven't as yet put the board between any
> protective sheets when laminating like you might to laminate paper
> items...I'm going to try that next (the manufacturer never
> specifically said to do it).
>
> Here are their instructions:
>
> http://www.mgchemicals.com/techsupport/416dfr_inst.html
> <http://www.mgchemicals.com/techsupport/416dfr_inst.html>
>
> I clean the board ahead of time with steel wool, alcohol and
> acetone. I am using clean gloves throughout.
>
> Can anyone help me with any tricks to get this stuff to adhere
> uniformly?
>
> Thank you so much in advance!
>
> -Josh
>
>