Filter cigarette

US5058608A · kind A · utility

Assignee

• B.A.T. Cigarettenfabriken GmbH · DE

Inventors

• Paul-Georg Henning · Quickborn, DE
• Werner Schneider · Erbach, DE

Key dates

• Filing date: Jan 10, 1990
• Grant date: Oct 22, 1991
• Expiry date: Jan 10, 2010

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A24D3/043
• WIPO field: Other consumer goods
• WIPO sector: Other fields

Abstract

A filter cigatette comprises a tobacco rod having a tobacco mixture with a low packing or filling density, a first filter element racing the tobacco rod, having a retention capacity of 40 to 80% and consisting of a fibrous material having a low single denier and a high total denier, a second filter element facing the mouth of the smoker and having a retention capacity of 15% at the maximum, and a hollow chamber formed between the two filter elements and having a length of 3 to 7 mm at an overall length of the filter between 18 and 30 mm. The two filter elements and the hollow chamber are surrounded by a paper wrapper and an air-permeable tipping paper with a ventilation zone in the region of the hollow chamber; said ventilation zone ensures a ventilation degree of 50 to 85% and is created on the finished cigarette by laser beams or by mechanically produced perforations through both papers. In this way a more intensive taste sensation can be achieved together with a low nicotine to condensate ratio.