Contact Doug Pauls at Contamination Studies Laboratories, [log in to unmask] He should be able to help solve your problem. Dave Hillman Rockwell Collins [log in to unmask] ______________________________ Reply Separator _________________________________ Subject: Oilly stuff after lamination Author: [log in to unmask] at ccmgw1 Date: 6/7/96 2:51 PM Hi, We sometimes find some oilly stuff left on the Cu foil (especially near the multiline hole area ) after lamination which we suspect coming from silicone rubber press pad or the tadler release sheet we used. It is very difficult to remove and is hurting the yield. We would appreciate anyone who can help us solving this issue (espacially how to avoid it). John Y. XIE Prolinx Labs Corporation 90 Great Oaks Blvd, Suite 107 San Jose, CA 95119 Tel: (408)227-0707 ext. 112 Fax: (408)227-6529