3M Adhesives do these in the UK, they use a sub-contractor who does all the
cutting who they have very close links with.
For a more radical approach, does anyone out there have experience of using
aluminium backed laminate as a replacement for this?????
Neil Atkinson
-----Original Message-----
From: Kane, Joseph [mailto:[log in to unmask]]
Sent: 28 August 2001 16:53
Subject: Sheet Adhesive Suppliers
Our supplier for epoxy sheet adhesives has significantly increased
prices, and I'd like to look at alternative sources.
We use this stuff for bonding ladder-style aluminum heatsinks to
PWB's. The types that we use are either glass cloth or Kapton
film covered with epoxy, total thickness from .004" to .009". We
cut material on a programmable x-y machine that looks a lot like
a plotter, but with a blade instead of a pen. Cure is with heat and
pressure, either in a fixture and oven, or with a vacuum bag and
platen press.
We like dry film better than screen printing or dispensing liquid
adhesive because it's a lot less messy, bondline thickness is very
repeatable, material doesn't squeeze out when fixtured, and there
is no smear when aligning the heatsink with the board.
Anyone use Arlon materials for something like this? Other sources?
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