Coated impregnated porous filter plug
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United States of America Patent
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Mar 26, 2013
Grant Date -
Apr 14, 2011
app pub date -
Oct 9, 2009
filing date -
Oct 9, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
A process for producing a coated filter plug for a smoking article including: (a) incorporating an additive to a porous filter plug, thereby obtaining an impregnated filter plug; (b) coating a surface of the impregnated filter plug with a cross-linkable polymer material; and (c) cross-linking the cross-linkable polymer material, to form a cross-linked, breakable coating substantially enclosing the impregnated filter plug. The process may further include at least partially coating the impregnated filter plug with a cross-linking agent prior to, or subsequent to, coating with the cross-linkable polymer material.
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