Method of drilling a hole for printed wiring board

Details Method of drilling a hole for printed wiring board Method of drilling a hole for printed wiring board

1994-06-06

1996-01-02

Howell, Daniel W.

Cutting by use of rotating axially moving tool

Processes

Bit detachable

408 56, B23B 3500

Patent

active

054802695

ABSTRACT:
A method of drilling a through-hole for inter-surface conduction in a laminate for a printed wiring board, in which the heat generation in a drill bit can be inhibited in drilling holes, quality holes can be highly efficiently made in the presence, on the laminate surface, of a novel water-soluble lubricant sheet which has high strength and can be handled easily, the method comprising drilling the through-holes in the presence of a water-soluble lubricant sheet which has a thickness of 0.02 to 3 mm and is formed from a mixture of 20 to 90% by weight of a polyether ester with 10 to 80% by weight of a water-soluble lubricant.

REFERENCES:
patent: 4781495 (1988-11-01), Hatch et al.
patent: 4929370 (1990-05-01), Hatch et al.
patent: 5067859 (1991-11-01), Korbonski
patent: 5082402 (1992-01-01), Gaku et al.
patent: 5435671 (1995-07-01), Weimeich

Affiliated with

Also associated with

Rating

Method of drilling a hole for printed wiring board does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of drilling a hole for printed wiring board, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of drilling a hole for printed wiring board will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-231423