JP3200113U - Smoking filter - Google Patents

Abstract

Provided is a filter for a smoking article in which a recess is provided in a mouthpiece without lengthening a filter section. A filter including a filter section and a recess is formed in the mouth end of the filter, the filter section being aligned with and adjacent to the recess, first and Second filter portions 6 and 7, the first filter portion 6 is located between the recess 10 and the second filter portion 7, and the second filter portion 7 includes a plug 15 and a plug 15 extending in the longitudinal direction. And the granular material 18 arranged in the circumferential region. [Selection] Figure 3

Description

  The present invention relates to a filter for smoking articles.

  As used herein, the term “smoking article” refers to cigarettes, cigarettes, cigarettes, etc., whether or not based on tobacco, tobacco derivatives, expanded tobacco, recycled tobacco or tobacco substitutes. This includes, but is not limited to, smokeable products and products that are heated but do not burn.

  A smoking article, such as a cigarette, is connected to a tobacco rod and is equipped with a gas flow filter that is aspirated by the smoker. The filter is usually made from cellulose acetate. The user ignites one end of the tobacco rod and sucks a gas stream such as smoke through the filter. The filter captures a part of the smoke component generated from the burned tobacco.

  Thus, smoking articles and filters vary greatly from market to market due to many factors such as consumer preferences and habits. In certain markets, it is preferred that the mouthpiece has a recess, which may be used to increase the overall length of the filter. The filter provided with such a recess is known in Patent Document 1 and Patent Document 2 below.

  The recess is obtained by wrapping a plug made of a filter material at the suction end of the filter. However, the filter provided with the recess has the disadvantage that the length of the filter becomes long, and therefore the smoking article itself becomes long.

  In order to maintain the filter and smoking article at a standard length, it is necessary to shorten the filter so that the relative length of the tobacco rod section and filter section of the smoking article can be maintained. However, if the conventional filter material plug is shortened, the effect of filtering the gas flow becomes smaller than that of the conventional filter having no recess. Therefore, there is a need to provide a filter with a recess without lengthening the filter section.

  It is an object of the present invention to provide a smoking article filter that overcomes or substantially alleviates the problems of the conventional smoking article filters described above.

  The present invention provides a filter including a filter section and a recess, the recess being formed at the mouth end of the filter, the filter section being aligned with the recess and adjacent to the first and second filter portions. The first filter portion is located between the recess and the second filter portion, and the second filter portion includes a plug extending in the longitudinal direction and a granular material disposed in a circumferential region of the plug.

  The wrapper may engage around the plug and the particulate material may be adhered to the surface of the wrapper.

  The wrapper preferably extends circumferentially around the first filter portion and the second filter portion and extends in a longitudinal direction from one end of the first portion to form a recess.

Preferably, the longitudinally extending plug material includes a filter medium.

  Advantageously, the particulate material extends to the end of the second filter part immediately adjacent to the first filter part.

  Conveniently, two or more of the circumferential regions of the second part comprise granular material spaced apart from one another in the circumferential direction.

  The granular material preferably extends over the entire length of the second portion.

  The plug may further include a particulate material dispersed in the filter material, which may be an adsorbent.

  The granular material may be activated carbon.

  In one embodiment, the first filter portion includes a filter medium.

  Another aspect of the present invention provides a smoking article comprising a filter for smoking articles, the filter comprising a filter section and a recess, the recess formed at the mouth end of the filter, the filter section being in the recess. Aligned and adjacent, including first and second filter portions, wherein the first filter portion is located between the recess and the second filter portion, the second filter portion being a longitudinally extending plug And a granular material arranged in the circumferential region of the plug.

  Several embodiments of the present invention will now be described, by way of example only, with reference to the accompanying drawings.

It is a perspective view of the smoking article containing a smoking material rod and the filter of this invention. It is a perspective view of the filter for smoking goods by the embodiment of the present invention. FIG. 3 is a longitudinal sectional view of the filter element shown in FIG. 2. The surface of the wrapper to which the particulate material is applied is shown.

  Referring to the drawings, FIG. 1 shows a cigarette-shaped smoking article 1 including a filter 2 according to one embodiment of the present invention. Although FIG. 1 shows a smoking article as a cigarette, it will be appreciated that the smoking article 1 may take the form of a cigar or cigarillo that includes a filter 2 of the present invention.

  In FIG. 1, a smoking article 1 includes a smoking material rod 3 such as a general cylindrical cigarette wrapped with a paper wrapper, which is attached coaxially to the filter 2 by a tipping paper 4, The smoking material rod 3 and the filter 2 are pasted by the method described above. Accordingly, the chipping paper will not be further described here.

  An embodiment of the filter 2 attached to the smoking material rod 3 is shown in FIGS. In this embodiment, the filter 2 includes a filter section 5 that is approximately 22 mm in length, which includes first and second filter portions 6, 7. The filter section 5 typically has a diameter of 7.5 mm to 8 mm, and the first filter portion 6 is wound with a wrapper 8 which is a plug wrapper material in this embodiment, but the wrapper is not limited thereto. The wrapper or plug wrapper 8 is longer than the filter section 5 and protrudes from the filter section 5 at the mouth end 9 of the filter 2 to form a recess 10 having a depth of about 5 mm. The length of the protruding part of the plug wrapper 8 and thus the depth of the recess 10 is indicated in FIG. 2 by the reference character “x”. The filter section 5 and the recess 10 together form the filter 2.

The plug wrapper 8 has a high basis weight of, for example, 100 g / m ² and imparts rigidity to the recess 10. The plug wrapper 8 that forms the recess 10 at the mouth end of the smoking article is made of a thick plug wrapper so that the recess is securely maintained and does not easily collapse even if there is nothing to support the filter material. It has become.

  The first filter portion 6 is formed so that the first filter portion 6 is closer to the suction end 9 of the filter 2 than the second filter portion 7, so that the second filter portion is separated from the recess 10. Located between. The second filter portion 7 is disposed between the first filter portion 6 and the smoking material rod 3 when the filter 2 is disposed on the smoking article 1.

  The first filter portion 6 includes a plug made of a filter material surrounded by a plug wrapper 8. The filter media plug is formed from fibrous cellulose acetate, but it will be appreciated that any conventional filter media may be used. The first filter portion 6 includes first and second circular end faces 13, 14.

  The second filter portion 7 includes a plug 15 made of a filter material such as fibrous cellulose acetate, and a granular material 16 such as carbon or activated carbon scattered in the filter material. It is optional (though preferred in some embodiments) to provide the central plug 15 with particulate material.

  Furthermore, the second filter portion 7 includes a wrapper 17, preferably a plug wrapper material, and has a particulate material 18 such as carbon or activated carbon attached to its inner surface. The wrapper 17 wraps the plug 15 about a longitudinal axis extending through the filter 2 and has an overlapping seam. Apart from this, the wrapper 17 is a divided wrapper bonded to the plug 15. The second film portion 7 has first and second end faces 19 and 20.

  The surface of the wrapper 17 to which the particulate material 18 is attached is shown in FIG. The granular material 18 is arranged in individual regions 21 that are located apart from each other on the inner surface of the wrapper 17. The individual regions 21 of the granular material 18 each extend along the longitudinal direction of the wrapper 17, but the granular material 18 extends only partially over the width of the wrapper 17, and the longitudinal direction of the wrapper 17. The edge 22 does not include particulate material and thus provides an overlapping seam without particulate material when formed around the plug 15. When the wrapper 17 is formed around the plug 15 by conventional means, the particulate material 18 is placed in two separate areas spaced from each other and diametrically opposed.

  As a matter of course, the number of the individual regions 21 of the granular material 18 arranged in the wrapper 17 is not limited to two, and the granular material 18 having other structures can be used. For example, three, four, five or six separate areas spaced from each other on the inner surface of the wrapper 17 may be used. In such a configuration, these regions are uniformly and contrasted around the longitudinal axis extending through the second filter portion 7. However, it may be arranged at other intervals. Furthermore, the areas of a specific wrapper may not all have the same width or the same width, and may or may not have the same width with a gap between the areas. Similarly, the gaps between the regions may or may not have the same width.

  The advantage of placing it in the control is that the attached particulate material pulls and distorts the wrapper, thus reducing the bending and bending of the filter elements that occur in an asymmetric configuration when the filter is pulled and distorted. To do.

  The particulate material 18 disposed in the wrapper 17 is selected from, but not limited to, a group of relatively high surface area materials that can adsorb smoke components without a high degree of specificity. Suitable general adsorbents are carbon, activated carbon, activated charcoal, activated coconut carbon, activated coal-based carbon or charcoal, zeolite, silica gel, gypsum, aluminum oxide (activated or not), It can be selected from the group consisting of carbonaceous resins or combinations thereof. The particulate material used may be a single substance or a mixture and / or a mixture with another material.

  The filter 2 is configured to include a recess 10 disposed at the mouth end 9 of the smoking article 1 extending from the first end 13 of the first filter portion 6. The recess 10 is formed by the inner surface extending in the circumferential direction of the plug wrapper 8 extending from the first filter portion 6 and the first end portion 13 of the first filter portion 6, and has an opening 23 at the mouth end 9. The first end 13 of the first filter portion 6 is visible to the user through the opening 23.

  The second end 14 of the first filter portion 6 is formed on the second filter portion 7 so that the opening 23 of the recess 10 and the second end portion 20 of the second filter portion 7 form opposite ends of the filter 2. It abuts on the first end 19.

  The advantage of the above-described configuration is that the effect of the filter section 2 for filtering the gas flow passing through the filter section 2 is increased by providing the particulate material 18 arranged in the circumferential region of the second filter portion 7. Thus, the filter 2 can be shortened without compromising the effectiveness of the filter section 2 with respect to the filtration of the gas stream passing through it, thus providing a filter having a recess without lengthening the filter 2.

  By providing the first filter portion 6 between the recess 10 and the second filter portion, the second filter portion 7 is located upstream of the filter medium of the first filter portion 6, and in the circumferential region of the second filter portion 7. The granular material 18 positioned is prevented from being removed from the second filter portion or moved to enter the recess 10. Such loss of particulate material 18 can cause the particulate material to come into contact with the user. Furthermore, in the above-described configuration, the user cannot see the granular material 18 disposed in the circumferential region of the second filter portion 7 and the granular material 16 scattered in the filter medium of the plug 15.

  In use, the user puts the mouthpiece end 9 of the smoking article into the mouth, ignites the smoking material rod 3 wrapped in paper at the end far from the mouthpiece end 9 of the smoking article, To burn. The filter 2 is located at the mouth end 9 of the smoking article 1 so that a gas stream containing smoke drawn from the smoking material rod 3 moves through the filter 2 before entering the user's mouth.

  In the embodiment described above, the first filter portion 6 and the second filter portion 7 are shown as having separate plug wrappers 8, 17, but it will be appreciated that in other embodiments the filter is It includes a single plug wrapper that extends throughout the filter section 5 and joins the first and second filter portions 6, 7 to form a recess 10. In such an embodiment, the particulate material 18 extends partially along the plug wrapper so that the particulate material extends only over the second filter portion 7 and not over the first filter portion 6.

  In the embodiment described above, the filter section 5 is formed from two separate filter parts, but in other embodiments the first and second filter parts 6, 7 are formed in one piece.

  In the above-described embodiment, the recess is formed by a plug wrapper extending beyond the plug of the filter material. However, it should be understood that the present invention is not limited to this, and in another embodiment, the recess is formed. May be formed of chipping paper.

  While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that modifications are made to the above-described exemplary embodiments that fall within the scope of the invention as set forth in the following claims. It is possible.

US Pat. No. 7,243,659 International Publication No. WO00 / 00047

Claims (12)

  A filter comprising a filter section (5) and a recess (10), wherein the recess (10) is formed in the mouth end (9) of the filter and the filter section (5) is aligned with the recess (10) And includes first and second filter portions (6, 7) adjacent to each other, the first filter portion (6) being located between the recess (10) and the second filter portion (7), The second filter portion (7) is a smoking article filter including a plug (15) extending in a longitudinal direction and a particulate material (18) disposed in a circumferential region of the plug (15).   2. A filter according to claim 1, characterized in that the wrapper (17) engages around the plug (15) and the particulate material (18) adheres to the surface of the wrapper (17).   A wrapper (8, 17) extends circumferentially around the first filter portion and the second filter portion (6, 7) and extends longitudinally from one end of the first filter portion (6) to form a recess (10). The filter according to claim 2, wherein the filter is formed.   The filter according to any one of claims 1 to 3, wherein the longitudinally extending plug (15) includes a filter medium.   A filter according to any one of the preceding claims, characterized in that the granular material (18) extends to the end of a second filter part (7) immediately adjacent to the first filter part (6). .   Any one of claims 1 to 5, wherein two or more of the circumferential regions of the second filter portion (7) comprise granular material (18) spaced apart from each other in the circumferential direction. The filter according to claim 1.   A filter according to any one of the preceding claims, characterized in that the granular material (18) extends over the entire length of the second filter part (7).   The filter according to any one of claims 1 to 7, wherein the plug (15) further includes a granular material (18) dispersed in the filter medium.   The filter according to any one of claims 1 to 8, wherein the particulate material is an adsorbent.   The filter according to claim 8, wherein the granular material is activated carbon.   The filter according to any one of claims 1 to 10, wherein the first filter portion (6) includes a filter medium.   A smoking article comprising the filter according to any one of claims 1 to 11.

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