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 ################################################################