Plastic and nonmetallic article shaping or treating: processes – Forming articles by uniting randomly associated particles – Stratified or layered articles
Reexamination Certificate
2006-09-12
2006-09-12
Theisen, Mary Lynn (Department: 1732)
Plastic and nonmetallic article shaping or treating: processes
Forming articles by uniting randomly associated particles
Stratified or layered articles
C264S115000, C264S120000
Reexamination Certificate
active
07105115
ABSTRACT:
Disclosed herein is a method of manufacturing expanded graphite products. The method comprises the steps of a) compressing expanded graphite to form a graphite thin film, b) milling the graphite thin film to form graphite flakes, and c) placing the graphite flakes in a mold and compressing the graphite flakes to form a predetermined shape, wherein during at least any one of the steps a), b) and c), a binder is mixed with the expanded graphite. There are provided advantageous effects that as the density of the expanded graphite product increases through respective manufacturing steps, not only are initial equipment costs reduced due to minimized equipment, but also an expanded graphite product having a uniform density and a closely packed structure is provided. Additionally, since the expanded graphite product is finally compressed in the mold, the expanded graphite product does not have directional preference and can be formed into various shapes.
REFERENCES:
patent: 5194198 (1993-03-01), von Bonin et al.
patent: 6673289 (2004-01-01), Reynolds et al.
Shlesinger & Arkwright & Garvey LLP
Takumispirit Corporation
Theisen Mary Lynn
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