Question: any issues regarding laser marking on polymeric material? Any change of properties in the area? Is subsequent conformal coat is required after marking? jk >-----Original Message----- >From: TechNet [mailto:[log in to unmask]] On Behalf Of Zweigart, Siegmund >Sent: Friday, May 09, 2003 6:59 AM >To: [log in to unmask] >Subject: [TN] laser marking systems > > >Hello all > >For a new customer we are looking into laser marking systems. >It should be able to mark bar code and 2D data matrix codes in >the solder mask. We had some discussions with customer and >some potential suppliers. Some questions came up: >- What is better: Nd-YAG or CO2 laser (in the Nd-YAG process the >solder mask is removed down to the bare copper, with >CO2 only the >color is changed). >- Do you have any experience with readability of the >barcode after the >product was exposed to Air / humidity / soldering processes? > > >All input welcome > >Siggi > >--------------------------------------------------- >Technet Mail List provided as a free service by IPC using >LISTSERV 1.8e To unsubscribe, send a message to >[log in to unmask] with following text in the BODY (NOT the >subject field): SIGNOFF Technet To temporarily halt or >(re-start) delivery of Technet send e-mail to >[log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE >mailing per day of all the posts: send e-mail to >[log in to unmask]: SET Technet Digest Search the archives of >previous posts at: http://listserv.ipc.org/archives Please >visit IPC web site http://www.ipc.org/html/forum.htm for >additional information, or contact Keach Sasamori at >[log in to unmask] or 847-509-9700 ext.5315 >----------------------------------------------------- > --------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8e To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/html/forum.htm for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 -----------------------------------------------------