Cigarette wrapper and cigarette

Abstract

A cigarette has a tobacco section in which cut tobacco is wrapped with a cigarette wrapper, a filter section connected to one end of the tobacco section, and a tip paper integrally connecting the tobacco section to the filter section in a manner to cover the proximal end portion of the tobacco section and the filter section and provided with ventilation holes formed in a circumferential direction in positions apart from the smoking end of the filter section. The tobacco section has a rod length of 30 to 46 mm, and a cut tobacco filling density of 180 to 270 mg / cm3. The cigarette wrapper has a basis weight of 17 to 21 g / m2, a mixing ratio of a calcium carbonate filler of 16 to 25% by weight, and a calcium carbonate content of 3 g / m2 or more. The cigarette provides at least six puffs under a standard smoking condition.

Description

[0001] This is a Continuation Application of PCT Application No. PCT / JP00 / 09194, filed Dec. 25, 2000, which was not published under PCT Article 21(2) in English.[0002] This application is based upon and claims the benefit of priority from the prior Japanese Patent Application No. 11-371797, filed Dec. 27, 1999, the entire contents of which are incorporated herein by reference.[0003] 1. Field of the Invention[0004] The present invention relates to a cigarette that permits at least six puffs in spite of its short rod length of tobacco section.[0005] 2. Description of the Related Art[0006] In order to prevent a fire and to suppress sidestream smoke or to prevent carbon dioxide gas generation, a cigarette is proposed having a cut tobacco rod with a short length. For example, Japanese Utility Model No. 3049857 discloses a cigarette the length of which cut tobacco rod is half that of the ordinary cigarette in order to lower the amount of carbon dioxide generated per cigarette. Also Jpn. P...

AI Technical Summary

Benefits of technology

[0014] The present invention provides a novel cigarette wrapper that permits lowering the spontaneous combustion rate of the cigarette, and a cigarette prepared by using the particular cigarette wrapper.

[0018] In the present invention, it is possible to provide cigarettes having various tar values matching with tastes for smokers by adjusting a filter section and a tobacco section.

[0020] The cut tobacco performs a function of lowering the temperature of smoke. In the cigarette of the present invention, however, the smoke temperature is unlikely lowered because the rod length of the tobacco section is short. In particular, the smoke temperature is unlikely lowered in the case where the Vf value is low, which possibly impairs the flavor. However, it is possible to improve the flavor by arranging a tip paper connecting the cut tobacco rod to the filter section such that the tip paper covers the proximal end portion of the cigarette wrapper over a length of 10 mm or more.

[0022] Also, since the smoke temperature is unlikely lowered in the cigarette of the present invention, if the filter section contains menthol, the high temperature smoke promotes evaporation of menthol. It follows that it is possible to provide a feeling of coolness in smoking more satisfactorily compared with an ordinary menthol cigarette.

Problems solved by technology

It should noted that a cigarette available on the market provides six to ten puffs under the standard smoking condition (ISO), while such a cigarette having a short cut tobacco rod provides puffs considerably smaller than that provided by the cigarette available on the market, which fails to satisfy smokers.

However, the cigarette having a cut tobacco density not lower than 300 mg / cc is not adapted for high-speed production.

As a result, it has been found that, in the case of combining materials used for manufacturing ordinary cigarettes and employing a standard cut tobacco density, the number of puffs provided by the cigarette is decreased if the length of cut tobacco rod is short, resulting in failure to satisfy smokers.

It has been found that, the standard cut tobacco density brings about a high spontaneous combustion rate of the cigarette, i.e., a combustion rate of the cut tobacco rod under the state that the cigarette is not smoked, resulting in decrease in the number of puffs.

It has been found, however, that, if the basis weight of the cigarette wrapper is excessively small, the tensile breaking load is rendered smaller than 1.0 kg / 15 mm, and that, if the content of the filler is excessively decreased, the tensile breaking load of the cigarette wrapper is caused to exceed 2.0 kg / 15 mm as well as a burning cigarette is spontaneously extinguished.

In particular, the smoke temperature is unlikely lowered in the case where the Vf value is low, which possibly impairs the flavor.