Plastic and nonmetallic article shaping or treating: processes – With severing – removing material from preform mechanically,... – Punching article from sheet material
Patent
1980-02-21
1981-07-28
Parrish, John
Plastic and nonmetallic article shaping or treating: processes
With severing, removing material from preform mechanically,...
Punching article from sheet material
264156, B29C 1710
Patent
active
042809770
ABSTRACT:
A method of working ceramic green sheet is disclosed. The ceramic green sheet is worked by pushing a spacer having at its edge a given profile to the surface of the sheet and then forcing a cylindrical knife heated at a given temperature and provided with an edge having a form substantially equal to the profile of the spacer along the periphery of the spacer to the surface of the sheet.
REFERENCES:
patent: 2335665 (1941-03-01), Bauer
patent: 3074143 (1963-01-01), Smith
patent: 3234593 (1966-02-01), Lerner
NGK Insulators Ltd.
Parrish John
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