Mold for molding optical disk, having stamper holding member inc

Details Mold for molding optical disk, having stamper holding member inc Mold for molding optical disk, having stamper holding member inc

1997-01-22

1998-02-24

Mackey, James P.

Plastic article or earthenware shaping or treating: apparatus

With apparatus assembly or dismantling means or with idle part

For extrusion or injection type shaping means

425437, 425553, 425554, 425810, 425DIG60, B29C 4526

Patent

active

057209898

ABSTRACT:
A mold for molding an optical disk including a pair of mold halves which cooperate to form a mold cavity for forming the optical disk, an annular plate-like stamper and a stamper holding member. One of the pair of mold halves has an annular recess in a radially inner portion thereof. The stamper has a center hole and is positioned in the mold cavity. The stamper holding member is removably accommodated in the annular recess for supporting the stamper at an inner peripheral portion. The stamper holding member includes a first ring member having an annular collar portion extending radially outwardly from an axial end of the first ring member, and a second ring member removably fitted on an axial end portion of the first ring member. The stamper is positioned such that the inner peripheral portion is interposed between the annular collar portion of the first ring member and an inner portion of the second ring member. The mold halve has a first and a second air passage which are open to respective portions of the annular recess, for applying vacuum air to the stamper holding member and feeding compressed air to the mold surface.

REFERENCES:
patent: 4737096 (1988-04-01), Poorten
patent: 5330693 (1994-07-01), Takada
patent: 5593710 (1997-01-01), Asai

Affiliated with

Also associated with

Rating

Mold for molding optical disk, having stamper holding member inc does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Mold for molding optical disk, having stamper holding member inc, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mold for molding optical disk, having stamper holding member inc will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1873745