公开(公告)号：IL60656A

公开(公告)日：1987-12-20

申请号：IL6065680

申请日：1980-07-22

Applicant: LCOA LAMINATING CO OF AMERICA

IPC: B32B15/08 ,  B23B35/00 ,  B32B15/14 ,  B32B43/00 ,  H05K1/03 ,  H05K3/00 ,  H05K13/08

Abstract: An entry material for use in drilling circuit boards to avoid marring of such boards comprises a wood pulp-glass composite substrate having aluminum foil bonded to the opposite surfaces thereof. This entry material is relatively economical and has a stiffness sufficient to avoid upward bending or "oil canning" when pressure feet spaced from the drill are employed to hold the workpiece during drilling and further has enough strength to withstand high torsional drill forces with drills operating for high rates of material removal. The double layers of foil separated by the low heat conductive substrate material affords a pair of heat sinks which more effectively can carry away heat from the drill.

公开(公告)号：BR8008772A

公开(公告)日：1981-05-26

申请号：BR8008772

申请日：1980-07-28

Applicant: LCOA LAMINATING CO OF AMERICA

Inventor： BLOCK JAMES P

IPC: B32B3/28 ,  B23B35/00 ,  B23B47/28 ,  B23Q11/12 ,  B32B15/04 ,  H05K3/00 ,  H05K3/40

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.

公开(公告)号：NO155834B

公开(公告)日：1987-03-02

申请号：NO811067

申请日：1981-03-27

Applicant: LCOA LAMINATING CO OF AMERICA

Inventor： BLOCK JAMES P

IPC: B23B20060101 ,  B23B35/00 ,  B23B47/28 ,  B32B15/10 ,  B32B15/14 ,  H05K20060101 ,  H05K3/00 ,  H05K3/40

公开(公告)号：NO154656B

公开(公告)日：1986-08-18

申请号：NO811068

申请日：1981-03-27

Applicant: LCOA LAMINATING CO OF AMERICA

Inventor： BLOCK JAMES P

IPC: B32B3/28 ,  B23B35/00 ,  B23B47/28 ,  B23Q11/12 ,  B32B15/04 ,  H05K3/00 ,  H05K3/40

公开(公告)号：FI70106B

公开(公告)日：1986-01-31

申请号：FI802382

申请日：1980-07-30

Applicant: LCOA LAMINATING CO OF AMERICA

Inventor： BLOCK JAMES P

IPC: B32B15/08 ,  B23B35/00 ,  B32B15/14 ,  B32B43/00 ,  H05K1/03 ,  H05K3/00 ,  H05K13/00

Abstract: An entry material for use in drilling circuit boards to avoid marring of such boards comprises a wood pulp-glass composite substrate having aluminum foil bonded to the opposite surfaces thereof. This entry material is relatively economical and has a stiffness sufficient to avoid upward bending or "oil canning" when pressure feet spaced from the drill are employed to hold the workpiece during drilling and further has enough strength to withstand high torsional drill forces with drills operating for high rates of material removal. The double layers of foil separated by the low heat conductive substrate material affords a pair of heat sinks which more effectively can carry away heat from the drill.

公开(公告)号：DE3070175D1

公开(公告)日：1985-03-28

申请号：DE3070175

申请日：1980-10-28

Applicant: LCOA LAMINATING CO OF AMERICA

Inventor： BLOCK JAMES P

IPC: H05K1/03 ,  H05K3/00 ,  H05K13/00

公开(公告)号：AU539607B2

公开(公告)日：1984-10-04

申请号：AU6222480

申请日：1980-07-28

Applicant: LCOA LAMINATING CO OF AMERICA

Inventor： BLOCK J P

IPC: B23B20060101 ,  B23B35/00 ,  B23B47/28 ,  B32B15/10 ,  B32B15/14 ,  H05K20060101 ,  H05K3/00 ,  H05K3/40

公开(公告)号：ZA804474B

公开(公告)日：1981-11-25

申请号：ZA804474

申请日：1980-07-24

Applicant: LCOA LAMINATING CO OF AMERICA

Inventor： BLOCK JAMES P

IPC: B32B3/28 ,  B23B35/00 ,  B23B47/28 ,  B23Q11/12 ,  B32B15/04 ,  H05K3/00 ,  H05K3/40 ,  B23B ,  B32B

公开(公告)号：ZA8004475B

公开(公告)日：1981-11-25

申请号：ZA8004475

申请日：1980-07-24

Applicant: LCOA LAMINATING CO OF AMERICA

Inventor： BLOCK J

IPC: B32B15/08 ,  B23B35/00 ,  B32B15/14 ,  B32B43/00 ,  H05K1/03 ,  H05K3/00 ,  B23B ,  H05K

CPC classification number: H05K3/0047 ,  B23B35/005 ,  H05K1/0366 ,  H05K2201/0284 ,  H05K2201/0293 ,  H05K2203/0152 ,  H05K2203/0214 ,  Y10T83/9309 ,  Y10T408/03