process for einkapseln of preferential to rauchfiltern and / or filteranfeuchten of rauchartikeln for liquid substances

摘要

1,234,802. Cigarettes; tobacco-smoke filters. BRITISH-AMERICAN TOBACCO CO. Ltd. 2 April, 1969 [19 April, 1968], No. 18560/68. Heading A2C. [Also in Division B8] A liquid is encapsulated by filling a tube therewith, the filled tube is subjected to cooling to freeze the contents, and cut into lengths, the ends of the lengths are sealed either by plugging or by closing and sealing the tube ends, and allowing the sealed tube to warm up so that the encapsulated substance becomes liquid. Particular reference is made to encapsulated products which may be incorporated into cigarettes or cigarette filters, e.g. water and solutions or suspensions of substances known to improve or enhance the quality of tobacco smoke, e.g. sodium acetate, zinc acetate, trisodium ortho-phosphate, menthol and polyethylene amine. In the examples, the tube used is of plasticised P.V.C.