label painted with UV  curable ink might be better - depend upon what  
you use for the wash... (did explore as part of UV curable ink  
application in mid 2000... No publications... of course, depend upon  
how the ink formulated - unless you have very good relationship with  
ink chemist and photo initiator MFG researcher, you might have to try  
a lot before you can find one... if you team up with both, you need  
to sign NDAs prior  to your trail).  May be someone can provide  
update?  I am out of that field for 13-15 years now.
jk
On Oct 15, 2018, at 5:22 PM, Douglas Pauls wrote:

> I wasn't just thinking of labels coming off.  I include labels  
> where the
> ink or bar code washes off.
>
> Doug Pauls
> Principal Materials and Process Engineer
> Rockwell Collins
>
>
> On Mon, Oct 15, 2018 at 3:11 PM Stadem, Richard D  
> <[log in to unmask]>
> wrote:
>
>>
>> I don’t know of a major issue with any labels coming off in the  
>> wash. I
>> often thought I did have an issue, but it always turns out that  
>> the CCA was
>> baked or reflowed or reworked or went through some other thermal  
>> cycle that
>> actually made the labels curl, shrink and then fall off or get  
>> washed off.
>> The tipoff is the gummy residue left behind. When labels go through a
>> thermal cycle they are not made for, the adhesive gets all gummy  
>> and is
>> left behind. No wash can take that off.
>>
>> -----Original Message-----
>> From: TechNet [mailto:[log in to unmask]] On Behalf Of Douglas Pauls
>> Sent: Monday, October 15, 2018 4:02 PM
>> To: [log in to unmask]
>> Subject: [TN] Incompatible Labels
>>
>> OK, I am asking a question in support of an IPC test program.  For  
>> those of
>> you that are cleaning assemblies, is there a particular label  
>> brand or
>> style that gives you fits with respect to not surviving a cleaning  
>> process
>> unscathed?  And on the other end, labels that seem to be bulletproof?
>> Answers can be sent to me back channel and will be kept confidential.
>>
>> Thanks.
>>
>> Doug Pauls
>> Principal Materials and Process Engineer
>> Rockwell Collins
>>