Molding die for disc substrate

Details Molding die for disc substrate Molding die for disc substrate

2006-09-05

2006-09-05

Heckenberg, Donald (Department: 1722)

Plastic article or earthenware shaping or treating: apparatus

Female mold and charger to supply fluent stock under...

C425S810000

Reexamination Certificate

active

07101171

ABSTRACT:
A resin ring51is press-fitted into a grove portion formed in an inner periphery surface of an interlocking ring4. The resin ring51is made of a hard resin such as Teflon. The resin ring51as a low frictional lubricative member is interposed between the interlock ring4and an outer periphery ring3. In addition, a cavity6as a closed space is formed between a stamper1bas a molding surface of a fixed side mirror1and a mirror side molding surface2bof a moving side mirror2. While the moving side mirror2is being press-contracted to the fixed side mirror1, when a resin material is filled into the cavity6, the outer periphery ring3is slidably held in a groove of the moving side mirror2with predetermined clearances. In the interlock ring4, a plurality of openings4awhich relieve gas produced by the disc resin material filled into the cavity6are formed.

REFERENCES:
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Computer translation of JP 07-080844.
Computer translation of JP 2000-048416.
Supplementary EPO Search Report dated May 17, 2004.
International Search Report, dated Jul. 29, 2002.

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