TW201700018A - Edge portion joint structure of wrapping paper of a rod-shaped smoking article and rod-shaped smoking article filter - Google Patents

Abstract

This invention provides a technical solution to prevent the separation of joined portion of edge regions of a wrapping paper by which the wrapped object of a rod-shaped smoking article is wrapped, such that the joined portion is not easily separable in comparison with conventional joint structure. It is a joint structure of edge portion of a wrapping paper for wrapping an object of a rod-shaped smoking article to be wrapped in a peripheral direction. The wrapping paper has a pair of the first edge region and a second edge portion extending in an axial direction along an axis of the object to be wrapped and by joining the first edge region and the second edge region, the object being formed into a cylindrical shape. A bonded portion is formed by sticking together respective inner surfaces of the first edge region and the second edge region corresponding with each other, and the bonded portion is folded backed to about the wrapping portion which is adjacent to the bonded portion and fixed in a state that the bonded portion covers the wrapping portion.

Description

End joint structure for rod-shaped smoking articles and filter for rod-shaped smoking articles

The present invention relates to a web end joining structure for a rod-shaped smoking article and a filter for a rod-shaped smoking article.

In the case of a roll paper of a stick-shaped smoking article such as a cigarette, a cigarette paper of a filter material for a filter for a rod-shaped smoking article and a filter paper such as a filter paper in which a filter and a tobacco rod are integrally wound are known. Paper, or a roll of tobacco rods that are wound up with tobacco rods. The roll paper used in these rod-shaped smoking articles is wound in the circumferential direction of the package target portion in the manufacturing process of the rod-shaped smoking article, and the end regions thereof are overlapped with each other, and then joined, and then joined and formed. It is cylindrical. In the conventional roll paper end joint structure, the inner surface of the other end portion region is overlapped on the outer surface of one end portion of the roll paper wound around the package target portion of the rod-shaped smoking article, and the overlapped end portion is further formed by the adhesive. The areas follow each other.

(previous technical literature)

(Patent Literature)

Patent Document 1: Japanese Special Table 2008-539717

However, for example, when an external force is applied to the deformation of the rod-shaped smoking article, there is a fear that the end portions of the end regions of the paper roll are peeled off in the conventional paper end joining structure.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a technique for making a joint portion between end portions of a roll paper of a packaged object portion of a packaged rod-shaped smoking article less likely to be peeled off than in the related art.

In order to solve the problem, the first end portion region and the inner surface of the second end portion of the roll paper wound in the circumferential direction of the package target portion of the rod-shaped smoking article are overlapped with each other to form a palm. The portion of the package portion that is adjacent to the palm portion and that is wound up by the package portion is folded toward the palm portion, and is fixed in a state in which the palm portion is abutted against the package portion.

More specifically, the end paper joining structure of the present invention is a web end joining structure that is wound in the circumferential direction of the package object portion of the rod-shaped smoking article, wherein the roll paper has the package along the aforementioned package The pair of first end region and the second end region extending in the axial direction of the target portion are formed into a cylindrical shape by joining the first end portion region and the second end portion region, and have the aforementioned 1 end region and the inner surface of the second end region The palm-receiving portion that overlaps the facing surface is folded toward the side of the winding portion that is adjacent to the palm portion and that winds up the package target portion, and is fixed in a state of covering the package portion.

According to the invention, when the first end portion region and the second end portion region of the roll paper wound in the circumferential direction of the package target portion are joined, the inner surfaces of the roll paper are overlapped with each other in the palm portion. Therefore, the end joint strength of the rolled paper can be improved as compared with the conventional structure in which the outer surface of the other end portion overlaps the outer surface of the one end portion.

Further, in the filter for a rod-shaped smoking article, a liquid containing propylene glycol, glycerin or the like may be added to the filter medium. When a liquid is added to the filter medium of the filter as described above, a liquid impervious layer may be formed on the inner surface of the filter paper for winding the filter material for the rod-shaped smoking article filter, so that the liquid does not pass through the filter cigarette paper.

Therefore, in the end paper joining structure of the present invention, the roll paper is a filter paper for winding a filter material for a rod-shaped smoking article filter, and a liquid-impermeable layer may be formed on the inner surface of the roll paper. In the end joint structure of the cigarette paper for a filter which forms the liquid-impermeable layer on the inner surface side as described above, the inner surface of the first end portion region and the second end portion region are opposed to each other and overlapped by the present invention. In the palm portion, even when a liquid is added to the filter material of the filter, the end faces of the first end portion region and the second end portion region can be prevented from coming into contact with the liquid. Therefore, the joint portion between the first end portion region and the second end portion region can be made into a structure that is less likely to be peeled off.

Further, in the end structure of the end paper of the present invention, the above combination The first end portion region of the palm portion and the inner surface of the second end portion region may be adhered to each other. Thereby, the joint strength between the first end portion region and the second end portion region is further improved, so that the joint portion between the first end portion region and the second end portion region can be made less likely to be peeled off.

Further, in the end portion of the roll paper of the present invention, the palm-shaped portion may be formed by disposing the positions of the end faces of the first end portion and the second end portion so as to overlap each other, thereby forming an inner surface of either one of them. a portion of the non-overlapping inner surface region that does not overlap the inner surface of the other, and the non-overlapping inner surface region is reflexed in a manner opposite to the outer surface of the package portion, and the non-overlapping inner surface region It is fixed to the outer surface of the package. With such a configuration, it is possible to provide a web end joint structure which is excellent in manufacturing suitability.

Further, the present invention can also be specified as a filter for a rod-shaped smoking article. In other words, the filter for a rod-shaped smoking article of the present invention is a filter material having a columnar shape and a cigarette paper for winding around the filter material, the rod-shaped smoking article filter, wherein the filter cigarette is used The paper has a pair of first end regions and second end regions extending in the axial direction of the filter medium, and is formed into a cylindrical shape through the joining of the first end region and the second end region, and has a shape a palm-handling portion that overlaps the inner surface of the first end portion region and the second end portion region, and the palm portion is folded toward the side of the package portion that is adjacent to the palm portion and that winds the filter material And fixed in a state of covering the package. Further, in the filter for a rod-shaped smoking article of the present invention, a liquid-impermeable layer may be formed on the inner surface of the cigarette paper for a filter. Moreover, the filter material can also Added liquid.

Further, means for solving the problems of the present invention can be employed as much as possible in combination.

According to the present invention, it is possible to provide a technique in which the joint portion between the end regions of the roll paper of the packaged object portion of the packaged rod-shaped smoking article is less likely to be peeled off than in the related art.

1‧‧ ‧ Cigarettes

2‧‧‧ tobacco rod

3‧‧‧Filter paper

4‧‧‧Filter

5‧‧‧ Filter media

6, 6A‧‧‧ cigarette paper

7, 7A‧‧‧ filter area

9‧‧‧Binder

10‧‧‧solution

21‧‧‧ cut tobacco

22‧‧‧Roll paper

31‧‧‧ venting holes

61‧‧‧Substrate

62‧‧‧Liquid-impermeable layer

63‧‧‧1st end area

63a, 64a‧‧‧ end face

64‧‧‧2nd end area

65, 65A, 65B‧‧ ‧ with the palm

66‧‧‧Adjacent Packaging Department

631‧‧‧ outer surface

641‧‧‧ Non-overlapping inner surface area

Fig. 1 is an external view of a cigarette of the first embodiment.

Fig. 2 is an exploded perspective view of the cigarette of the first embodiment.

Fig. 3 is a schematic view showing a sheet-like cigarette paper before the filter region of the first embodiment is packaged.

Fig. 4 is a cross-sectional view showing the filter region of the first embodiment.

Fig. 5 is an explanatory view of an end joint structure of a conventional cigarette paper.

Figure 6 is a cross-sectional view of the filter region of the second embodiment.

Fig. 7 is a schematic view of a cigarette of a modification.

Fig. 8 is an explanatory view of a filter region of a second modification.

Here, an embodiment of the web end joining structure of the smoking article of the present invention will be described with reference to the drawings. In addition, the dimensions, materials, shapes, relative arrangements, and the like of the structural elements described in the present embodiment are not limited to the technical scope of the invention unless otherwise specified.

<Embodiment 1>

Fig. 1 is an external view of the cigarette 1 of the first embodiment. Fig. 2 is an exploded perspective view of the cigarette 1 of the first embodiment. The cigarette 1 is a filter cigarette having a cigarette rod 2 and a filter 4 connected to one end of the tobacco rod 2 via the filter paper 3. The cigarette 1 is an example of a stick-shaped smoking article of the present invention.

The tobacco rod 2 is formed by winding the tobacco 21 with a roll paper 22 to form a cylindrical shape (rod shape). The filter 4 is a member that filters the smoke component contained in the mainstream smoke when the mainstream smoke generated when the cigarette 1 is sucked is formed into a cylindrical shape having substantially the same diameter as the tobacco rod 2.

The filter 4 is wound up by the filter paper 3, and is connected to the rear end side of the tobacco rod 2 via the filter paper 3. The filter paper 3 is connected by winding the end of the tobacco rod 2 and the filter 4 into one body. In the filter paper 3, a vent hole 31 for introducing an external air (air) for diluting mainstream smoke into the filter 4 is bored in a region where the filter 4 is coated. The vent hole 31 is an external air introduction hole for venting, and a plurality of filter papers 3 are provided. The air introduced from the vent holes 31 of the filter paper 3 will be diluted by the mainstream smoke passing through the filter 4. Further, the vent hole 31 of the filter paper 3 is not in a necessary configuration, and the arrangement of the vent hole 31 can be appropriately changed. Hereinafter, the end portion of the tobacco rod 2 that is connected to the filter 4 in the longitudinal direction (axial direction) is referred to as a "rear end", and the end portion on the opposite side is referred to as a "front end" (tip). Further, the end portion of the filter 4 that is connected to the tobacco rod 2 in the longitudinal direction (axial direction) is referred to as a "front end", and the end portion opposite to the front end is referred to as a "suction end". And will be along the long side of cigarette 1 (tobacco rod 2, filter 4) The section in the direction (axial direction) is defined as "longitudinal section", and the section in the direction orthogonal to it is defined as "cross section".

The filter 4 has a filter region 7 formed by winding a filter medium 5 such as a cellulose acetate tow with a cigarette paper 6. A solution is added to the filter medium 5 of the filter region 7 of the present embodiment. The solution contains, for example, propylene glycol (PG), glycerin (G), and the like. Here, since the solution added to the filter region 7 contains propylene glycol, it is possible to selectively remove a predetermined component (for example, phenol) contained in the smoke at the time of smoking, and at the same time pass the lemon olein which is one of the aroma components. Filter 4 is not removed. Further, since the solution added to the filter region 7 contains glycerin, it is possible to prevent the propylene glycol contained in the solution from volatilizing in the storage of the cigarette 1 and disappearing. Further, propylene glycol and glycerin can be used in the market.

Further, the solution added to the filter region 7 may also contain a tackifier. The type of the tackifier is not particularly limited as long as it is dissolved in propylene glycol or glycerin, and examples thereof include Sanxian gum, ylang gum, psyllium seed gel, pectin, and carboxymethyl group. Cellulose, hydroxypropylcellulose, polyvinyl alcohol, agarose gel, pullulan, alginic acid, polyacrylic acid, and alkali metal or alkaline earth metal salts of these.

Fig. 3 is a schematic view showing the sheet-like cigarette paper 6 before the filter region 7 of the first embodiment is wound. The cigarette paper 6 has a liquid impermeable layer 62 formed on one surface of the substrate 61. Further, the cigarette paper 6 is wound around the filter region 7 such that the liquid impervious layer 62 forms an inner surface facing the outer peripheral surface of the filter medium 5. As the substrate 61 of the cigarette paper 6, a well-known paper which is generally used as a cigarette paper for a filter can be used.

Further, the material forming the liquid impermeable layer 62 is preferably a resin material. The material forming the liquid impermeable layer 62 may be exemplified by polyethylene, polypropylene, polystyrene, cellulose, acetonitrile, polytetrafluoroethylene, polyoxydimethylene fluorenyl, polyvinyl acetate, One or more selected from the group consisting of polyvinyl chloride, polymethyl acrylate, polymethyl methacrylate, natural rubber, polybutadiene, and copolymers of these, aluminum, aluminum oxide, and cerium oxide. Among them, polyethylene and polypropylene are particularly preferable as the material for forming the liquid impermeable layer 62. Further, the liquid impermeable layer 62 of the cigarette paper 6 can be laminated on the surface of the substrate 61 by coating or vapor deposition. In the present embodiment, polyethylene is applied to the base material 61 of the cigarette paper 6 to form the liquid-impermeable layer 62.

Fig. 4 is a cross-sectional view showing the filter region 7 of the first embodiment. The filter region 7 is wound with a cigarette paper 6 in the circumferential direction of the filter medium 5 formed into a cylindrical shape. More specifically, the cigarette paper 6 is such that the liquid impermeable layer 62 faces the outer peripheral surface of the filter medium 5, and the liquid permeable layer 62 is wound around the filter medium 5 in the inner side. Further, the cigarette paper 6 includes a pair of first end regions 63 and second end regions 64 extending in the axial direction of the filter region 7 (filter 4, cigarette 1) (see FIG. 4). The one end region 63 and the second end portion region 64 are overlapped with each other, and the overlapped regions are joined to each other to be formed into a cylindrical shape. The filter region 7 in the present embodiment corresponds to the package target portion of the present invention.

As shown in FIG. 4, the cigarette paper 6 in the filter region 7 includes a palm portion 65 in which the inner surfaces of the first end portion region 63 and the second end portion region 64 are disposed to face each other and overlap each other. And the symbol 66 in Fig. 4 indicates that the palm portion 65 of the cigarette paper is adjacent and the filter region 7 is wound up. Adjacent to the package.

In the palm-handling portion 65 of the cigarette paper 6, the inner surfaces of the first end portion region 63 and the second end portion region 64, that is, the liquid-impermeable layer 62 and the second end portion region 64 side on the first end portion region 63 side. The liquid impermeable layers 62 are adhered to each other. The liquid impermeable layer 62 of the first end portion region 63 and the liquid impermeable layer 62 of the second end portion region 64 may be adhered to the liquid impermeable layer 62. However, in the present embodiment, the first end of the palm portion 65 is transmitted. The liquid impermeable layer 62 on the side of the portion region 63 and the liquid impermeable layer 62 on the side of the second end portion 64 are thermally welded to each other and adhered to each other. More specifically, at least a portion of the joint region in which the inner surface of the liquid impermeable layer 62 of the first end portion region 63 and the inner surface of the liquid impermeable layer 62 of the second end portion region 64 overlap each other is not formed. A state in which the bonding agent is welded. Moreover, the entire joint region (entire region) in which the inner surface of the liquid impermeable layer 62 of the first end portion region 63 and the inner surface of the liquid impermeable layer 62 of the second end portion region 64 overlap each other may not pass through the bonding agent. The ground is welded. Further, since the liquid impermeable layer 62 of the present embodiment is formed of polyethylene having a low melting point, there is an advantage that it is easy to handle when heat welding is performed. Further, in the present embodiment, the inner surface of the liquid impermeable layer 62 of the first end portion region 63 and the inner surface of the liquid impermeable layer 62 of the second end portion region 64 are overlapped with each other without the adhesive. Since the joint region is thermally welded, there is also a thickness which can reduce the thickness of the joint region by the amount of the adhesive which is not used.

Further, as shown in FIG. 4, the palm-shaped portion 65 of the cigarette paper 6 is folded back so that the outer surface of the first end portion region 63 faces the outer surface of the adjacent wound portion 66. Moreover, the palm portion 65 covers the adjacent package portion The state of the outer surface of 66 is fixed to the adjacent package portion 66 via the adhesive 9.

On the other hand, Fig. 5 is an explanatory view of the end joint structure of the conventional cigarette paper 6. In the conventional example shown in Fig. 5, the cigarette paper 6 has the end portions overlapping each other such that the inner surface of the second end portion region 64 faces the outer surface of the first end portion region 63, and Agent 9 followed by. Therefore, in the end surface 63a of the first end portion region 63, the solution 10 added to the filter region 7 comes into contact with the substrate 61, so that the solution 10 easily penetrates into the substrate 61 from the end surface 63a. As a result, the adhesion of the adhesive agent 9 to the solution 10 of the base material 61 in the first end portion region 63 is lowered, and the first end portion region 63 and the second end portion region 64 are easily peeled off. Therefore, for example, in the manufacture or transportation of the filter area, the cigarette paper may peel off and the proper shape cannot be maintained. Further, for example, when an external force is applied to the filter to be deformed in the storage of the cigarette, the solution 10 may leak from the filter region 7. Moreover, the solution 10 leaking from the filter area 7 may permeate through the filter paper and ooze out to the outer surface of the filter paper to deteriorate the appearance of the cigarette.

On the other hand, according to the end joint structure of the cigarette paper 6 of the present embodiment shown in Fig. 4, the inner surfaces of the first end portion region 63 and the second end portion region 64, that is, the liquid impermeable layer 62 are formed. The palm rest portion 65 is formed in a state of being overlapped with each other, so that the base material 61 of the cigarette paper 6 does not come into contact with the solution 10 added to the filter region 7. Therefore, it is possible to suppress the solution 10 added to the filter region 7 from infiltrating into the substrate 61 of the cigarette paper 6. Therefore, the pasting of the first end portion region 63 and the second end portion region 64 does not occur. Also, the dissolution added to the filter region 7 can be suppressed The liquid 10 oozes to the outside. As a result, the appearance of the cigarette 1 can be well maintained. Further, since the palm portion 65 of the cigarette paper 6 is folded back along the outer surface of the adjacent package portion 66 and is followed by the adhesive 9, it is possible to suppress the shape of the filter region 7 from being skewed and maintained. Good circular shape.

Further, in the present embodiment, the thickness of the liquid-impermeable layer 62 of the cigarette paper 6 is not particularly limited, and may be appropriately set depending on the material of the substrate 61 or the combination of the materials forming the liquid-impermeable layer 62, but may be appropriately set. A state in which the thickness of the liquid-impermeable layer 62 is set to 5 to 30 μm is exemplified. Further, when the base material 61 of the cigarette paper 6 is coated with polyethylene in order to form the liquid impermeable layer 62 on one surface, it is preferable to select the basis weight, the thickness, and the air permeability so that the coating liquid does not permeate through the base material 61. Degrees, etc.

Further, the type of the adhesive portion 65 of the cigarette paper 6 that is adjacent to the package portion 66 is not particularly limited. However, for example, a hot melt adhesive having high water resistance can be suitably used. As the hot melt adhesive, a hot melt adhesive such as an ethylene-vinyl acetate copolymer (EVA) system can be suitably used.

Further, in the cigarette paper 6 of the present embodiment, the liquid-impermeable layer 62 is formed only on the inner surface side facing the filter medium 5 of the filter region 7, and the liquid-impermeable layer 62 is not formed on the outer surface side. In other words, both the outer surface of the palm-forming portion 65 of the coatable adhesive 9 and the outer surface of the adjacent package portion 66 are formed as the exposed surface of the base material 61. Therefore, the decrease in the adhesion of the adhesive 9 can be suppressed. In addition, the folding length of the first end portion region 63 in the folded portion 65 of the cigarette paper 6 is not particularly limited, but may be, for example, about several mm (for example, 2 mm). It has the advantage of improving manufacturing suitability.

<Embodiment 2>

Figure 6 is a cross-sectional view of the filter region 7A of the second embodiment. The cigarette of the present embodiment differs from the first embodiment only in the end structure of the cigarette paper 6A in the filter region 7A. Hereinafter, the differences from the first embodiment will be mainly described.

In the present embodiment, the solution 10 is also added to the filter medium 5 of the filter region 7A, and the cigarette paper 6A is wound around the filter medium 5. As shown in Fig. 6, the cigarette paper 6A has a palm portion 65A that overlaps the inner surfaces of the first end portion region 63 and the second end portion region 64 in the same manner as in the first embodiment. Here, the palm portion 65A of the second embodiment is a method of forming a non-overlapping inner surface region in which a part of the inner surface of the first end portion region 63 and the second end portion region 64 does not overlap the other inner surface. The state in which the positions of the end faces 63a and 64a of the both sides are shifted is overlapped. In the example shown in Fig. 6, in the first end portion region 63 and the second end portion region 64 constituting the palm portion 65A, the circumference of the second end portion region 64 is set larger than the first end portion region 63. long. Further, a portion of the inner surface of the second end portion region 64 is formed such that the end surface 63a of the first end portion region 63 is formed so as not to overlap the inner surface of the first end portion region 63. In a state in which the position of the end surface 64a of the second end portion region 64 is shifted, the inner surfaces of the first end portion region 63 and the second end portion region 64, that is, the liquid impermeable layer 62 are thermally welded to each other. In other words, the inner surfaces of the first end portion region 63 and the second end portion region 64 are adhered to each other so that a non-overlapping inner surface region 641 can be formed in a portion of the second end portion region 64.

Further, as shown in Fig. 6, the palm portion 65A of the cigarette paper 6A is folded in such a manner that the non-overlapping inner surface region 641 of the second end portion region 64 faces the outer surface of the adjacent wrapping portion 66 of the cigarette paper 6A. And the non-overlapping inner surface region 641 is fixed to the outer surface of the adjacent package portion 66 by the adhesive 9. Further, when the adhesive 9 is applied to the non-overlapping inner surface region 641, the adhesive 9 may be applied to a portion of the non-overlapping inner surface region 641 or coated on the entire surface. In the end joining structure of the cigarette paper 6A of the present embodiment, the first end portion region 63 of the palm portion 65A and the liquid impermeable layer 62 of the second end portion region 64 are also thermally welded to each other. Therefore, it is possible to suppress the substrate 61 of the cigarette paper 6A from coming into contact with the solution 10 added to the filter region 7A. Thereby, the solution 10 added to the filter region 7A can be prevented from infiltrating into the base material 61 of the cigarette paper 6A, and the adhesion of the first end portion region 63 and the second end portion region 64 does not occur as in the related art. As a result, it is possible to suppress the solution 10 added to the filter region 7A from oozing out to the outside.

Further, according to the end joint structure of the cigarette paper 6A of the present embodiment, the palm portion 65A is formed in a state in which the end surface 63a of the first end portion region 63 and the end surface 64a of the second end portion region 64 are shifted in the circumferential direction. Therefore, not only the outer surface 631 of the first end portion region 63 but also the non-overlapping inner surface region 641 of the second end portion region 64 may be applied with the adhesive 9 and the palm portion 65A may be adjacent to the package portion 66. Therefore, in the process of the filter region 7A, first, the first end portion region 63 is formed by reversing the end portion of the long-length cigarette paper 6A wound around the bobbin or the like, and then wound around a filter material formed into a cylindrical shape. The outer circumference of 5, and the portion of the second end portion 64 side corresponding to the non-overlapping inner surface region 641 is coated with the adhesive 9, which will be coated The non-overlapping inner surface region 641 on which the adhesive 9 is applied is pressed against the outer surface of the package portion 66, and the non-overlapping inner surface region 641 and the package portion 66 can be joined together, so that the manufacturing suitability is very good.

Further, the palm-shaped portion 65A of the cigarette paper 6A thermally fuses the first end portion region 63 and the liquid-impermeable layer 62 of the second end portion region 64, but the first end portion region 63 and the second end are sufficiently ensured, for example. When the overlap length of the portion region 64 is such that the solution 10 added to the filter region 7A does not easily move to the end surface 63a of the first end portion region 63, the first end portion region 63 and the second end portion region 64 may be omitted. The liquids are not thermally fused to each other by the layer 62.

Further, various modifications and improvements can be made to the above embodiment. Fig. 7 is a schematic view of a cigarette 1A of a modification. The filter 4A of the cigarette 1A is a so-called three-zone filter, and a front filter region 11 and a rear filter region 12 are connected to the front and rear of the filter region 7. That is, the filter 4A is disposed in a state in which the filter region 7 is interposed between the front filter region 11 and the rear filter region 12.

The front filter region 11 and the rear filter region 12 are configured, for example, by winding a cellulose acetate tow with a general cigarette paper. Further, the solution 10 is not added to the front filter region 11 and the rear filter region 12, and the solution 10 is added only to the filter region 7 of the middle portion. Further, the front filter region 11, the filter region 7, and the rear filter region 12 are integrally fixed by being wound up by the forming paper 13 of one example of the cigarette paper by the filter. Further, the detailed structure of the filter region 7 is as described in the first embodiment.

In the filter 4A of the present modification, the front filter region 11 in which the solution 10 is not added is disposed in the front stage of the filter region 7 to which the solution 10 is added, so that the solution 10 can be prevented from moving toward the tobacco rod 2 side. Further, since the rear filter region 12 in which the solution 10 is not added is disposed in the rear portion of the filter region 7, the solution 10 can be prevented from being introduced into the oral cavity of the smoker from the mouth end. Further, in the modification shown in Fig. 7, of course, the filter region 7 may be replaced with the filter region 7A described in the second embodiment.

In the above-described embodiment, the end joining structure of the roll paper of the present invention is applied to the case of the filter roll paper in which the filter region 7 to which the solution is added is wound, but the invention is not limited thereto. For example, the end joining structure of the present invention can be applied to a cigarette paper for a filter in which a liquid impervious layer is not formed on the inner surface, so that the joint strength of the end portions is stronger than ever.

Fig. 8 is an explanatory view of a filter region 7B of a second modification. The filter region 7B has a filter medium 5 and a cigarette paper 6B that winds the outer peripheral surface of the outer peripheral surface of the filter medium 5. The cigarette paper 6B is such that no liquid permeation layer is formed on the surface of the substrate 61. Further, in the present modification, a solution containing propylene glycol, glycerin or the like is not added to the filter medium 5 of the filter region 7B. The cigarette paper 6B of the present modification is the same as the cigarette paper 6 of the first embodiment.

Here, the cigarette paper 6B includes a palm portion 65B in which the inner surfaces of the first end portion region 63 and the second end portion region 64 are disposed to face each other and adhered. Further, the palm portion 65B is folded toward the side adjacent to the package portion 66 and covers the outer surface of the adjacent portion of the package portion 66, and the adhesive 9 is used. Next, it is adjacent to the package portion 66. According to the end joint structure of the cigarette paper 6B, since the inner surfaces of the folded paper portions 65B are opposed to each other, the second end portion region 64 is overlapped with the outer surface of the first end portion region 63. The inner surface and the subsequent conventional configuration can improve the end joint strength of the cigarette paper 6B. In particular, in the present modification, since the inner surfaces of the first end portion region 63 and the second end portion region 64 of the palm portion 65B are adhered to each other, the end joint strength of the cigarette paper 6B is further stabilized. As a result, peeling of the joint portion of the end portion of the cigarette paper 6B can be caused less easily.

Further, in the present modification, the end joining structure of the cigarette paper 6A described in the second embodiment may be applied instead of the cigarette paper 6B. Further, the present modification has been described with respect to the case where the end paper joining structure of the present invention is applied to the cigarette paper for a filter. However, the present invention is also applicable to, for example, the roll paper 22 in which the shredded tobacco 21 is wound up in the tobacco rod 2. In other words, the end joining structure of the roll paper 22 of the tobacco rod 2 can be configured to have the palm portion 65B shown in Fig. 8 . Thereby, the end joining strength of the roll paper 2 can be made more stable than in the past, and the peeling of the joint portion of the end portion of the roll paper 22 can be less likely to occur.

5‧‧‧ Filter media

6‧‧‧ cigarette paper

7‧‧‧Filter area

9‧‧‧Binder

10‧‧‧solution

61‧‧‧Substrate

62‧‧‧Liquid-impermeable layer

63‧‧‧1st end area

64‧‧‧2nd end area

65‧‧‧With the palm

66‧‧‧Adjacent Packaging Department

Claims (7)

A roll paper end joint structure for a rod-shaped smoking article, which is a web end joint structure that is wound in a circumferential direction of a package object portion of a rod-shaped smoking article, wherein the roll paper has a package along the package The pair of first end region and the second end region extending in the axial direction of the target portion are formed into a cylindrical shape by the joining of the first end region and the second end region, and have the first a palm-shaped portion that overlaps the inner surface of the end portion and the second end portion, and the palm portion is folded toward the side of the package that is adjacent to the palm portion and that winds up the package target portion. And it is fixed in the state which covered this package part. The roll paper end joint structure for a rod-shaped smoking article according to the first aspect of the invention, wherein the roll paper is a filter paper for a filter material for a filter for a rod-shaped smoking article, and the roll paper is The inner surface is formed with a liquid impermeable layer. The end paper joining structure for a rod-shaped smoking article according to the first or second aspect of the invention, wherein the first end portion of the palm portion and the inner surface of the second end portion are adhered to each other together. The end paper joining structure for a rod-shaped smoking article according to any one of claims 1 to 3, wherein the palm end portion has an end surface of the first end portion and the second end portion The positions are staggered and overlapped, thereby forming the inner surface of either one a non-overlapping inner surface area in which one portion does not overlap the inner surface of the other, and the non-overlapping inner surface area is reversely folded in a manner opposed to the outer surface of the aforementioned package portion, and the non-overlapping inner surface The zone is secured to the outer surface of the package. A filter for a rod-shaped smoking article, comprising a cylindrical filter medium and a filter for a rod-shaped smoking article of a cigarette paper for a filter wound in a circumferential direction of the filter medium, wherein the filter cigarette paper has a along The pair of first end region and the second end region extending in the axial direction of the filter medium are formed into a cylindrical shape by the joining of the first end region and the second end region, and have the first The end portion and the palm-shaped portion in which the inner surfaces of the second end portion are opposed to each other, and the palm portion is folded toward the side of the package portion that is adjacent to the palm portion and that winds the filter medium, and is covered. The state of the package is fixed. The filter for a rod-shaped smoking article according to claim 5, wherein a liquid-impermeable layer is formed on an inner surface of the filter paper for filter. The filter for a rod-shaped smoking article according to claim 6, wherein the filter medium is added with a liquid.