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August 2001

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Subject:
From:
Thomas Bauer <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Wed, 29 Aug 2001 09:28:44 -0700
Content-Type:
text/plain
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text/plain (103 lines)
You are not alone. Their price changes have forced us to design them out of
new projects.

THOMAS

-----Original Message-----
From: Kane, Joseph [mailto:[log in to unmask]]
Sent: Wednesday, August 29, 2001 8:56 AM
To: [log in to unmask]
Subject: Re: [TN] Sheet Adhesive Suppliers


Steve:

I was reluctant to slam them on line, but Ablestik is the problem.
Price increases like 3x or more.

Thanks.

-Joe


> ----------
> From:         Stephen R. Gregory[SMTP:[log in to unmask]]
> Reply To:     TechNet E-Mail Forum.
> Sent:         Tuesday, August 28, 2001 10:32 PM
> To:   [log in to unmask]
> Subject:      Re: [TN] Sheet Adhesive Suppliers
>
> Hi Joseph!
>
> We build assemblies that use adhesive preforms for just the reasons you've
>
> stated, and process them exactly like you do...
>
> The vendor is AbleStik at: http://www.ablestik.com/
>
> I hope this is not the company that you're talking about that's raised
> their
> prices so much...
>
> This preform that we use bonds two assemblies to a aluminum heatsink, one
> to
> each side, and this is the adhesive pre-form that is called out by our
> customer...we can't use anything else...sounds like a change of scope if
> the
> prices have increased a bunch!!!
>
> -Steve Gregory-
>
>
>
>
>       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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