Method for molding a formatted substrate for an optical disk

Details Method for molding a formatted substrate for an optical disk Method for molding a formatted substrate for an optical disk

1989-04-17

1992-04-21

Heitbrink, Jill L.

Plastic and nonmetallic article shaping or treating: processes

Forming sound grooves in records

2643281, 264334, 425556, 425810, B29C 4540

Patent

active

051065533

ABSTRACT:
Improvement in a method for molding a plastic substrate for an optical disk having a concave-convex pattern on a side surface thereof including a step of feeding liquid resin into a molding cavity defined by a pair of mold halves, characterized in that, when the molded plastic substrate is released from the mold halves, the molded plastic substrate is released at least simultaneously in time from both of the mold halves in a mold-opening stage.

REFERENCES:
patent: 4118168 (1978-10-01), Rees et al.
patent: 4185955 (1980-01-01), Holmes et al.
patent: 4340353 (1982-07-01), Mayer
patent: 4573900 (1986-03-01), Smith
patent: 4731013 (1988-03-01), Schrammel
patent: 4737096 (1988-04-01), Poorten
patent: 4755128 (1988-07-01), Alexander et al.
patent: 4783041 (1988-11-01), Sakaida et al.
patent: 4789320 (1988-12-01), Sasamura et al.
patent: 4790738 (1988-12-01), Shimojo et al.
patent: 4917833 (1990-04-01), Cools

Affiliated with

Also associated with

Rating

Method for molding a formatted substrate for an optical disk 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 for molding a formatted substrate for an optical disk, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for molding a formatted substrate for an optical disk will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1584291