Lon Weffers wrote:

> I am curious which type it is, because Werner Peters says that its not
> possible.
>
> Lon weffers
> Matas Electronics BV
> [log in to unmask]
>
> -----Original Message-----
> From:   Gabriela Bogdan [SMTP:[log in to unmask]]
> Sent:   vrijdag 5 februari 1999 8:35
> To:     [log in to unmask]
> Subject:        Re: [TN] Peelable mask
>
> Hamilton, Richard -4454 wrote:
>
> > Hello all,
> >
> > I wanted to get a 'heads up' on a possible problem so I asked this
> > several
> > months ago and got no reply. I thought, Great! This is not a
> problem!!
> >
> > Well, not so sure now. The peelable masking we are using on our
> PWB's
> > seems
> > to be getting tougher to remove after reflow process has been added
> to
> > the
> > system.
> >
> > Anyone have any suggestions, guidelines, or other input on what to
> > look for
> > or what to look out for? We will have to start looking at other
> > vendors for
> > the masking. Sorry but I cannot tell you the mfgr right now, our PWB
>
> > designer is out today. If this information is needed, let me know
> and
> > when I
> > get it I will let you know.
> >
> > Thanks gang.
> >
> > Richard Hamilton
> > Clemar Mfg. / Rain Bird
> > [log in to unmask]
> >
> > ################################################################
> > TechNet E-Mail Forum provided as a free service by IPC using
> LISTSERV
> > 1.8c
> > ################################################################
> > To subscribe/unsubscribe, send a message to [log in to unmask] with
> > following text in the body:
> > To subscribe:   SUBSCRIBE TechNet <your full name>
> > To unsubscribe:   SIGNOFF TechNet
> > ################################################################
> > Please visit IPC's web site (http://www.ipc.org) "On-Line Services"
> > section for additional information.
> > For technical support contact Hugo Scaramuzza at [log in to unmask] or
> > 847-509-9700 ext.312
> > ################################################################
>
>  Hi,
> We use currently peelable solder mask coated circuits. the mask is
> applied by the circuit manufacturer on connector areas which are press
>
> fit mounted after reflow and wave soldering.
> The manufacturer delivers the circuits with a little
> "underpolymerised"
> peelable mask-it actually somehow breaks when trying to remove it
> before
> assembly.
> After assembly it reaches the right physical properties and peels off
> easily from the surface and the holes.
> Though, the peelable solder mask manufacturer PETERS has two brands of
>
> "blue" and only one of them is suitable for our process, the other
> exhibiting just the same problems as you describe.
> We specify the brand in our order.
> Bye
> Gaby
>
> ################################################################
> TechNet E-Mail Forum provided as a free service by IPC using LISTSERV
> 1.8c
> ################################################################
> To subscribe/unsubscribe, send a message to [log in to unmask] with
> following text in the body:
> To subscribe:   SUBSCRIBE TechNet <your full name>
> To unsubscribe:   SIGNOFF TechNet
> ################################################################
> Please visit IPC's web site (http://www.ipc.org) "On-Line Services"
> section for additional information.
> For technical support contact Hugo Scaramuzza at [log in to unmask] or
> 847-509-9700 ext.312
> ################################################################

 Well, I am again on the net after a phone call in the middle of my once
a week afternoon sleep.
It's not a dream.It's PETERS 2054. The one not suitable for our process
is
2953.
Again, I do not know how others use it, we are happy with 2954.
Our incoming inspection people know also how to distinguish between the
two-the right one is of a lighter shade. Optimizing the thickness is an
important factor.
Gaby

################################################################
TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c
################################################################
To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body:
To subscribe:   SUBSCRIBE TechNet <your full name>
To unsubscribe:   SIGNOFF TechNet 
################################################################
Please visit IPC's web site (http://www.ipc.org) "On-Line Services" section for additional information.
For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312
################################################################