公开(公告)号：US3700341A

公开(公告)日：1972-10-24

申请号：US3700341D

申请日：1970-07-27

Applicant: LCOA LAMINATING CO OF AMERICA

Inventor： BLOCK JAMES P

IPC: B23B35/00 ,  H05K3/00

CPC classification number: H05K3/0047 ,  B23B35/005 ,  H05K2201/0284 ,  H05K2201/0293 ,  H05K2203/0152 ,  H05K2203/0214 ,  Y10T83/9309 ,  Y10T408/03 ,  Y10T408/561

Abstract: A laminated board formed of a core of pressed wood covered with preferably aluminum foil outer layers, adhesively bonded thereto, which is useful for a back-up board when drilling printed circuit boards which is formed by drying the pressed fiber core to a low moisture contest prior to adhesively bonding the aluminum foil thereto.