Formation of particle structures
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United States of America Patent
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Jun 19, 2018
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N/A
app pub date -
Jan 24, 2014
filing date -
Jan 26, 2013
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Abstract
Irregular, angular particles are produced by a manufacturing method that comprises forming a film on a substrate and then stretching the substrate along one or more axes to fracture the film into particle structures. The substrate may be moved continuously along a production line as the film is formed and may be stretched by accelerating that movement. The substrate may comprise a surface with elevated patterns to control the fracturing of the film. The particles are particularly suitable for the transdermal delivery of a biologically active substance into the body of a patient.
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