Method of improving coating uniformity
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United States of America Patent
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Nov 9, 2004
Grant Date -
Jun 26, 2003
app pub date -
Dec 19, 2001
filing date -
Dec 19, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
The invention is a method of forming extrudate having substantially uniform thickness. A shim is formed which has a thickness variation of less than or equal to about 0.5 mil (13 microns) total indicated runout. This shim is disposed between a first die portion having a first surface and a second die portion having a second surface. A slot is formed between the first surface and the second surface. The slot has a height dimension substantially the same as the shim thickness. Flowable material is extruded through the slot.
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