Well, there are residual benefits to everything.

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Whittaker, Dewey (EHCOE)
Sent: Thursday, March 20, 2014 12:48 PM
To: [log in to unmask]
Subject: Re: [TN] Membrane Keypad Adhesive

Isn't having pressure sensitive tapes out of your comfort zones a good thing, sort of like getting off scotch free?
Dewey 

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Mike Fenner
Sent: Thursday, March 20, 2014 10:33 AM
To: [log in to unmask]
Subject: Re: [TN] Membrane Keypad Adhesive

Pressure sensitive tapes are a little out of my comfort zone, but you pick up stuff. I recognise 468PM/200MP as a sort of stick all general purpose material.
3M have a range of double sided tapes specifically for silicone keyboard attach in hand held devices. They have different types of adhesive - one side for keypad other for PCB. Different carriers also according to precise requirements of your product.

Have you talked to 3M?

Best Wishes
 
 
 
Mike


-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of McGlaughlin, Jeffrey A
Sent: Thursday, March 20, 2014 1:33 PM
To: [log in to unmask]
Subject: [TN] Membrane Keypad Adhesive

We are having problems with getting a silicone rubber membrane keypad to adhere to a printed board assembly. We are currently using a 3M 468MP/200MP adhesive to attach to an LPI finish (gloss) prepared with an IPA wash. I suspect that there are better combinations of adhesive/surface/solvent but don't have the background to make a suggestion. Any recommendations?

Jeffrey McGlaughlin, C.I.D.
Engineering Designer
Avionics Systems & Tech Refersh
Office: 614.424.7582| Fax: 614.458.7582
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