Method for molding plastic shutter for magnetic disk cartridge

Details Method for molding plastic shutter for magnetic disk cartridge Method for molding plastic shutter for magnetic disk cartridge

1994-07-28

1995-12-05

Heitbrink, Jill L.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

26432817, B29C 4554

Patent

active

054726573

ABSTRACT:
In a method for injection molding a plastic shutter for a magnetic disk cartridge, the shutter having windows corresponding to an opening formed in a magnetic disk cartridge and being substantially U-shaped in section, the diameter of an injection cylinder for injecting molten resin for forming the shutter is determined according to the following equation:

REFERENCES:
patent: 4698714 (1987-10-01), Sugawara et al.
Rosato, Dominick V. editor, Injection Molding Handbook, 1986 pp. 60-67 and 98-105.

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