Phil is right except for one little detail.
If you place the cured CCAs in the bag while they are still warm, or they get warm later while in the bag, they will stick.

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Phil Bavaro
Sent: Thursday, October 27, 2011 3:58 PM
To: [log in to unmask]
Subject: Re: [TN] ESD packaging material issue

Wayne,

Something doesn't sound right here.  Solithane S-113 is a polyurethane and my experience is that fully cured urethane does not normally stick to the static dissipative interior of a multilayer ESD shielding bag.

I would check to ensure that the conformal coating is fully cured before it gets put into the bag.

I'll admit I haven't ever used Solithane S-113 and had a hard time finding the data sheet.  Uniroyal was the manufacturer on the only archived datasheet I could find but the current website eluded me.

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of E-Mail Forum Wayne Knapp
Sent: Thursday, October 27, 2011 1:13 PM
To: [log in to unmask]
Subject: [TN] ESD packaging material issue

Hi Technetters,
I could use your help resolving an issue I’m having with the ESD bags that we are currently using for packaging. The ESD bags are sticking to the conformal coating (Solithane S-113) on the CCAs that are placed in the bag. We cannot change the coating that is used on the CCAs, so we are looking for ESD safe packaging bags that will not stick to the CCAs. Does anyone know if there is an ESD bag (material) that would not stick to the CCAs?  Any help identifying a suitable ESD bag material and supplier would be appreciated.
Thanks,
Wayne

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