Method for manufacturing cigarette filters
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United States of America Patent
Stats
-
Nov 2, 1982
Grant Date -
N/A
app pub date -
Oct 17, 1980
filing date -
Oct 22, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method for manufacturing cigarette filters which have a well-stabilized shape in which acetate fibrous tows impregnated with carboxylic acid ester of polyol are formed into a predetermined shape, uniformly impregnated with water, and irradiated with microwave energy. Water is used during the application of microwave energy to enhance the absorption of microwave energy and hence heating of the filter. This causes the carboxylic acid ester of polyol to very rapidly disperse causing it to permeate into the acetate fiber to rapidly complete the stabilization and solidification of the filter.
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Family
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- Non-US Classification not provided for expired patents
Cited Art Landscape
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- Citation Ranking not provided for expired patents
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