James,

 In general removing VHB tape is VERY difficult. If you do manage to pry
apart the two items I found acetone helped get the adhesive off PCBs.

 I had a 2 x 4 inch board on 1.5mm aluminum. Wow was that bond strong. 

Bob K.

-----Original Message-----
From: TechNet <[log in to unmask]> On Behalf Of HEAD James
Sent: Tuesday, August 11, 2020 6:26 AM
To: [log in to unmask]
Subject: [TN] Removing 3M Adhesive Transfer Tape 468MP from PCBs

In one of our more esoteric recent PCB designs we've created a bare FR-4 PCB
with no solder mask, nor silkscreen, that's fixed to another PCB that has
conventional epoxy solder mask and silkscreens using 3M Adhesive Transfer
Tape 468MP.

The end use is to have a permanent fixing that's very difficult to remove.

You've probably guessed by now that under some circumstances the scientist
who's developing this product needs to be remove it! He's been complaining
he's getting blisters trying.

I was wondering if anybody on Technet is already using and removing this
tape from PCB surfaces and what solvents they may be using?

Thank you.

Regards,

James

James Head
Magnetic Resonance
Tubney Woods, ABINGDON, Oxon OX13 5QX

Tel: +44 (0) 1865 393200
[log in to unmask]<mailto:[log in to unmask]>

www.oxfordinstruments.com<http://www.oxfordinstruments.com>
[cid:[log in to unmask]]

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