ROTARY PROCESS FOR APPLICATION OF MAGNETIC COMPOSITIONS
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United States of America Patent
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Oct 1, 2015
app pub date -
Mar 10, 2015
filing date -
Mar 28, 2014
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Abstract
A method of making a magnet, the method comprising providing a magnetizable composition comprising a thermoplastic polymer material and magnetizable particles, heating the magnetic composition to a temperature at which the magnetic composition is in a flowable state, providing the magnetic composition to a cavity of a rotating cylinder through a stationary flat nozzle, the rotating cylinder comprising a plurality of openings therethrough, providing a substrate in the form of a moving web or sheet and contacting the rotating cylinder with the substrate, wherein the flat nozzle forces the magnetic composition through the openings in the rotating cylinder and the magnetic composition adheres to the substrate.
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