Insulated mold structure for injection molding of optical disks

Details Insulated mold structure for injection molding of optical disks Insulated mold structure for injection molding of optical disks

1993-08-31

1995-10-17

Vargot, Mathieu D.

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Light polarizing article or holographic article

2491141, 249134, 26432816, 425810, B29D 1100, B29C 4302

Patent

active

054588189

ABSTRACT:
An insulated mold insert is provided for injection molding compact disks and optical disks. The mold insert is removably located in the mold cavity behind the stamper. The mold insert has an insulation layer retaining heat at the molding surface, thereby increasing surface smoothness of the molded part. The insert may have a metal surface for contacting the back side of the stamper.

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