Ferrite/epoxy film
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United States of America Patent
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-
Aug 20, 1996
Grant Date -
N/A
app pub date -
Mar 17, 1989
filing date -
Mar 17, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A composition of ferrite and epoxy having the form of a film which can be cut, pressed onto word straps, and heat-cured to form an encapsulating keeper on a plated wire memory. The film comprises ferrite powder in a mixture of epoxy resins, typically Epon 1009 and Epon 828, pulverized dicyandiamide and butadiene/acrylonitrile rubber. The mixture is sprayed onto a sheet of halogenated polyolefin and air dried for 8-12 hours at between 160.degree. F. and 180.degree. F. The resulting flexible film is die cut to fit over word straps and further processed by applying 50-75 psi at 325.degree. F. for one hour.
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