JPS6046949B2 - Cigarette with filter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cigarette with a filter, and more particularly to a cigarette equipped with a filter having a novel means for introducing outside air.

It is well known that a cigarette is equipped with a filter having an air introduction means for introducing air into the filter to reduce the amount of smoke in the inhaled amount. No. 57-122784,
It is disclosed in Japanese Patent Application Laid-Open No. 57-132873.

In these technologies, the introduced air enters along the outer periphery of the filter and is inhaled while enveloping the undiluted smoke stream in the center, reducing the amount of smoke in the intake volume. This makes it possible to make the cigarette lighter and to satisfy the taste sensation.

By the way, in JP-A-55-141184, a plurality of grooves extending in the axial direction are formed on the outer circumferential surface of the filter, including plug paper, by means of thermoforming, and the filter is then molded into a cigarette using chipping paper. When integrated with the chip paper, the chip paper and the grooves form an introduction/circulation path for the surrounding air, but in this case, it is difficult to form the grooves by heating means in terms of high-speed production; During ripening, the grooved portion contracts, reducing the smoke flow cross-sectional area of the filter and causing variations in the cross-sectional area of the groove, impairing the uniformity of the incoming air in the circumferential direction of the filter. On the other hand, JP-A-57-12
No. 2784 discloses that when a plug paper is provided on a filter by a normal method and the filter and a cigarette are integrated with a tip paper provided with a plurality of axial protrusions for forming channels in advance, the plug A passage for introducing ambient air is formed between the paper and the channel, but in this case, it is very difficult to speed up the process of connecting the filter and cigarette using the tipping paper.

The present invention has been made with attention to the above-mentioned points, and it is possible to provide a plurality of filters in the axial direction in advance without reducing the cross-sectional area of smoke flow with respect to the outer circumference of the filter and without enlarging the outer circumference. By forming a channel for introducing surrounding air between the chip vapor and the channel when the filter and the cigarette are connected by the chip vapor, the high speed of the filter with respect to the cigarette is formed. There is a device that enables connection work.

The present invention will be explained below with reference to the drawings.

In FIG. 1, A indicates a filter, and B indicates a cigarette. On the outer peripheral surface of filter A, first and second plug vapors 1 and 2, which are preferably non-breathable, are provided. The plug vapor 2 of No. 2 has a plurality of channels 2a, 2a, which are cut in the axial direction and reach the suction end side of the filter A from the middle, leaving the connection side with the cigarette B open.
... is formed.

A chip vapor 3 connects the filter A and the cigarette B, and has air introduction holes 3a, 3a, . . . reaching the channels 2a, 2a, .

Instead of providing the air introduction holes 3a, 3a, . . . in the chip vapor 3, the chip vapor 3 itself may be made breathable. A peripheral air introduction flow path P is formed between the channels 2a, 2a, . . . , the chip vapor 3, and the first plug vapor.

Thus, in the above configuration, the smoke flow X and the air flow Y are inhaled into the mouth as separate flows.

In the structure shown in Figures 3 and 4, the relatively thick outer second
The plug vapor 2 is provided to protrude outward from the suction end side of the filter A and forms a cavity R inside, and a plurality of channels 2a, 2a... cut out in the axial direction are also connected to the suction end of the filter A. Therefore, the chip vapor 3 is also provided beyond the suction end of the filter A to the second plug vapor 2.

The plurality of channels 2a, 2a, . . . are provided midway through the protruding plug vapor 2 and face the above-mentioned empty space R, and there is a risk that the opening end of the air introduction flow path P may be blocked by the lips during smoking. There is no. Since the present invention is constructed as described above, a plurality of channels in the axial direction are provided in the outer circumference of the filter without reducing its cross-sectional area and without making the outer circumference too large. When attached to a cigarette via a chip vapor, a plurality of air introduction passages can be formed between the channel and the chip vapor, and it is possible to speed up the connection work between the filter and the cigarette using the chip vapor. .

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a sectional view of essential parts showing an example of the present invention, Figure 2 is a perspective view of the same filter, and Figure 3 is a perspective view of the same filter.
The figure is a cross-sectional view showing another example, and FIG. 4 is a perspective view of the same filter.

A... Filter, B... Cigarette, 1... First plug vapor, 2... Second plug vapor,
2a″.

Claims (1)

[Claims] 1. A second plug paper having a plurality of channels formed by notches reaching the suction end is provided on the first plug paper, and a filter is connected to the cigarette by a tip paper, and the tip paper and the channels are connected to the cigarette by a tip paper. A cigarette with a filter, characterized in that a plurality of passages are formed through which outside air is introduced through the ventilation portion of the tip paper. 2 A filter provided with a second plug paper having a plurality of channels formed by notches reaching the suction end on the first plug paper is connected to the cigarette by a tip paper, and the tip paper and the channels are used to ventilate the tip paper. A cigarette with a filter, characterized in that a plurality of passages are formed through which outside air is introduced, and the second plug paper and the tip paper are provided beyond the suction end of the filter.