WO2023188224A1

WO2023188224A1 - Method for manufacturing cylindrical body, and device for manufacturing cylindrical body

Info

Publication number: WO2023188224A1
Application number: PCT/JP2022/016386
Authority: WO
Inventors: 勝哉田村
Original assignee: 日本たばこ産業株式会社
Priority date: 2022-03-31
Filing date: 2022-03-31
Publication date: 2023-10-05

Abstract

A method for manufacturing a cylindrical body according to the present invention comprises: an application step in which a first material and/or a second material conveyed in the longitudinal direction is coated with a glue for adhering the first material and the second material to each other, the glue being applied in an adhering pattern including at least a linear pattern; a humidifying step in which the first material and/or the second material to which the glue was applied is humidified; an adhering step in which the first material and the second material are overlapped and adhered in a state in which end parts in a width direction perpendicular to the longitudinal direction are mutually shifted so as to not be overlapping; a molding step in which the mutually shifted and adhered first material and second material are molded into a cylindrical continuous body; and a cutting step in which the continuous body is cut into a cylindrical body.

Description

Method for manufacturing a cylindrical body and apparatus for manufacturing a cylindrical body

The present invention relates to a method for manufacturing a cylindrical body and an apparatus for manufacturing a cylindrical body.

Conventionally, a two-layered small tube body (cylindrical body) manufactured from first and second material strip portions is known (for example, see Patent Document 1). This two-layered small tube body can be applied, for example, to a flavor-generating article used in a non-combustible flavor inhaler for inhaling flavor without burning the material, or to a combustion-type smoking article.

In this tubular body, the second material strip portion is arranged around the first material strip portion, and the abutting edges of the first and second material strip portions are circumferentially mutually disposed. It is wound so that the position is shifted. Further, in this small tube body, a positioning adhesive and a seam adhesive (together referred to as adhesive) are applied between the first material strip portion and the second material strip portion on the entire surface or , located almost on the entire surface. Here, the adhesive is applied to a proportion of at least 80%, preferably at least 90% and particularly preferably at least 95% of the entire surface of the material strip section.

JP2018-93867A

In the tubular body according to DE 10 2005 010 100, the adhesive is applied to a proportion of at least 80%, preferably at least 90% and particularly preferably at least 95% of the entire surface of the material strip section. However, when the amount of adhesive applied increases, there is a risk that the flavor and taste of the flavor-producing article or smoking article to which the small tube is applied may deteriorate.

In other words, if a small tube with a large amount of adhesive applied is applied to a flavor-producing article or a smoking article, many components will volatilize from the adhesive when aerosol is generated by heating the flavor-producing article or burning the smoking article. . The volatilized adhesive components mix into aerosols generated from flavor-generating articles and smoking articles, and deteriorate the flavor and taste of the flavor-generating articles and smoking articles.

Therefore, in the small tube body described in Patent Document 1, it is possible to reduce the amount of adhesive applied. Specifically, in this small tube body, instead of providing the positioning adhesive over the entire surface or almost the entire surface between the first material strip portion and the second material strip portion, the positioning adhesive is provided between the first material strip portion and the second material strip portion. It is conceivable to apply it in a linear pattern between the first material strip section and the second material strip section.

However, in this small tube body, when the positioning adhesive is applied in a linear pattern between the first material strip part and the second material strip part, the positioning adhesive is applied to the part where the positioning adhesive is applied. humidity becomes higher than the humidity elsewhere. Therefore, in the manufacturing process of the small tube, when forming the first and second material strips coated with adhesive into a cylindrical shape, it is not possible to deform them uniformly, resulting in a decrease in the roundness of the small tube. There is a risk of

The present invention has been made to solve at least part of the above-mentioned problems, and provides a cylindrical body manufacturing method and a cylindrical body manufacturing apparatus that can obtain a cylindrical body with high roundness. The purpose is to obtain.

A first aspect of the present invention provides a method for manufacturing a cylindrical body. This method for manufacturing a cylindrical body includes applying a glue that adheres the first material and the second material to at least one of the first material and the second material that are conveyed in the longitudinal direction, an adhesive that includes at least a linear pattern. a coating step of applying the glue in a pattern; a humidifying step of humidifying at least one of the first material and the second material to which the glue is applied; and the step of moisturizing the first material and the second material at the ends in the width direction orthogonal to the longitudinal direction. A bonding step in which the first and second materials are stacked and bonded while being shifted from each other so that they do not overlap, a forming step in which the first material and the second material, which are mutually shifted and bonded, are formed into a cylindrical continuous body; and a cutting step of cutting into a cylindrical body.

According to the first aspect of the present invention, by humidifying at least one of the first material and the second material to which glue has been applied in an adhesive pattern including at least a linear pattern, the area to which the glue has been applied and the other It is possible to equalize the humidity between the two locations. Therefore, when the first material and the second material coated with glue are formed into a cylindrical shape, they can be uniformly deformed, so that a highly circular cylindrical body can be obtained.

In the second embodiment of the present invention, in the first embodiment, the humidifying step is a step of spraying water or alcohol onto at least one of the first material and the second material.

According to the second aspect of the present invention, the glue is applied by spraying water or alcohol onto at least one of the first material and the second material to which the glue is applied in an adhesive pattern including at least a linear pattern. It is possible to equalize the humidity between the area and other areas. Therefore, when the first material and the second material coated with glue are formed into a cylindrical shape, they can be uniformly deformed, so that a highly circular cylindrical body can be obtained.

In the third embodiment of the present invention, in the first embodiment, the humidifying step is a step of spraying steam onto at least one of the first material and the second material.

According to the third aspect of the present invention, by spraying steam onto at least one of the first material and the second material to which the glue is applied in an adhesive pattern including at least a linear pattern, the area to which the glue is applied is removed. It is possible to equalize the humidity with other areas. Therefore, when the first material and the second material coated with glue are formed into a cylindrical shape, they can be uniformly deformed, so that a highly circular cylindrical body can be obtained.

In the fourth embodiment of the present invention, in any of the first to third embodiments, in the application step, the area to which the glue is applied is the same as the overlapping part of the first material and the second material to be overlapped in the adhesion step. This is a process of applying glue so that it covers 10% or more and 50% or less of the area.

According to the fourth aspect of the present invention, the area where the glue is applied is 10% or more and 50% or less of the area of the overlapping portion of the first material and the second material, so that the first material and the second material It is possible to obtain a cylindrical body that suppresses poor adhesion with the cylindrical body and has little effect on flavor and taste.

In a fifth embodiment of the present invention, an apparatus for manufacturing a cylindrical body is provided. This cylindrical body manufacturing apparatus applies glue that adheres the first material and the second material to at least one of the first material and the second material that are conveyed in the longitudinal direction. an application section that applies the paste in a pattern, a humidification section that humidifies at least one of the first material and the second material to which the glue is applied, and an end section in the width direction perpendicular to the longitudinal direction of the first material and the second material. A position shifting section that shifts the positions of the first and second materials so that they do not overlap, an adhesive section that overlaps and bonds the first material and the second material that are shifted from each other, and the first material and the second material that are shifted and bonded to each other. , a forming section for forming a cylindrical continuous body, and a cutting section for cutting the continuous body into a cylindrical body.

According to the fifth aspect of the present invention, by humidifying at least one of the first material and the second material to which glue has been applied in an adhesive pattern including at least a linear pattern, the areas to which the glue has been applied and other It is possible to equalize the humidity between the two locations. Therefore, when the first material and the second material coated with glue are formed into a cylindrical shape, they can be uniformly deformed, so that a highly circular cylindrical body can be obtained.

FIG. 1 is a perspective view showing a cylindrical body according to an embodiment of the present invention. FIG. 2 is a cross-sectional view orthogonal to the axial direction of a cylindrical body according to an embodiment of the present invention. FIG. 2 is a cross-sectional view developed in the circumferential direction of a cylindrical body according to an embodiment of the present invention. FIG. 2 is a developed view showing a second sheet-like material of a cylindrical body according to an embodiment of the present invention. FIG. 7 is another developed view showing the second sheet-like material of the cylindrical body according to one embodiment of the present invention. FIG. 7 is another developed view showing the second sheet-like material of the cylindrical body according to one embodiment of the present invention. FIG. 7 is another developed view showing the second sheet-like material of the cylindrical body according to one embodiment of the present invention. 1 is a configuration diagram showing an apparatus for manufacturing a cylindrical body according to an embodiment of the present invention. FIG. 2 is an explanatory diagram showing experimental results of humidification conditions in a cylindrical body manufacturing apparatus according to an embodiment of the present invention. FIG. 3 is an explanatory diagram showing humidification conditions for each adhesive pattern in the cylindrical body manufacturing apparatus according to an embodiment of the present invention. It is an explanatory view showing the amount of adhesive applied in a cylindrical body according to an embodiment of the present invention in comparison with a conventional product. FIG. 2 is an explanatory diagram showing various physical properties of a cylindrical body according to an embodiment of the present invention in comparison with a standard product and a conventional product.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings described below, the same or corresponding components are denoted by the same reference numerals and redundant explanation will be omitted. The cylindrical body according to the present invention can be applied, for example, to a flavor-generating article used in a non-combustion type flavor inhaler for inhaling flavor and the like without burning the material. Note that the cylindrical body according to the present invention may be applied to a combustion type smoking article.

FIG. 1 is a perspective view showing a cylindrical body according to an embodiment of the present invention. FIG. 2 is a cross-sectional view orthogonal to the axial direction of a cylindrical body according to an embodiment of the present invention. FIG. 3 is a circumferentially developed cross-sectional view of a cylindrical body according to an embodiment of the present invention. Specifically, FIG. 3 shows the state before being formed into a cylindrical shape.

As shown in FIGS. 1 to 3, the cylindrical body 100 includes a first sheet material 110 (first material), a second sheet material 120 (second material), and an adhesive layer 130 (glue). Be prepared. The first sheet-like material 110 and the second sheet-like material 120 have a circular cross-sectional shape perpendicular to the axial direction. The second sheet-like material 120 is provided around the outer periphery of the first sheet-like material 110. The adhesive layer 130 is provided between the first sheet material 110 and the second sheet material 120, and adheres the first sheet material 110 and the second sheet material 120 to each other.

The first sheet material 110 and the second sheet material 120 may each be composed of paper or cardboard. Therefore, the workability of the cylindrical body 100 can be improved. Note that the first sheet-like material 110 and the second sheet-like material 120 may have an elliptical cross-sectional shape perpendicular to the axial direction.

Here, the first sheet-like material 110 and the second sheet-like material 120 are stacked on top of each other so that their ends in the circumferential direction do not overlap. The first sheet material 110 has a first body portion 111 and a first extension portion 112 that extends from the first body portion 111 in the circumferential direction with respect to the opposing second sheet material 120 . The first main body portion 111 is a portion facing the second sheet-like material 120 in FIG.

The second sheet material 120 has a second main body portion 121 and a second extending portion 122 that extends from the second main body portion 121 in the circumferential direction with respect to the opposing first sheet material 110. The second main body portion 121 is a portion facing the first sheet-like material 110 in FIG.

The adhesive layer 130 includes a positioning adhesive layer 131 and a first seam adhesive layer 132 that adhere the first body part 111 and the second body part 121 to each other, and a positioning adhesive layer 131 and a first seam adhesive layer 132 that adhere the first body part 111 and the second body part 121 to each other. It has a second seam adhesive layer 133 to be adhered. Note that the first seam adhesive layer 132 does not necessarily need to be provided, and the positioning adhesive layer 131 may function as the first seam adhesive layer 132.

The positioning adhesive layer 131, the first seam adhesive layer 132, and the second seam adhesive layer 133 may be composed of a mixture of organic polymers such as modified starch, vinyl acetate, or ethylene vinyl acetate, alcohol, and water. Note that the positioning adhesive layer 131, the first seam adhesive layer 132, and the second seam adhesive layer 133 are not limited to those described above, and may be made of other adhesives.

The cylindrical body 100 is formed by coating a positioning adhesive layer 131, a first seam adhesive layer 132, and a second seam adhesive layer 133 on the second sheet-like material 120, and stacking the first sheet-like material 110 on top of the second sheet-like material 120. It is formed and configured. Here, the positioning adhesive layer 131 applied to the second sheet material 120 has an adhesive pattern in which positioning glue (adhesive) is applied in a linear manner. Note that instead of the second sheet material 120, a positioning adhesive layer 131, a first seam adhesive layer 132, and a second seam adhesive layer 133 may be applied to the first sheet material 110.

FIG. 4 is a developed view showing the second sheet-like material of the cylindrical body according to an embodiment of the present invention. Specifically, FIG. 4 shows the state before being formed into a cylindrical shape. As shown in FIG. 4, the second sheet material 120 has a positioning adhesive layer 131 coated with two positioning glues in a straight line parallel to the axial direction.

In this way, since the positioning adhesive layer 131 has an adhesive pattern in which two positioning adhesives are applied in a straight line parallel to the axial direction, the adhesive The amount of coating can be reduced.

Note that the adhesive pattern of the positioning adhesive layer 131 is not limited to that shown in FIG. 4. FIG. 5 is another developed view showing the second sheet-like material of the cylindrical body according to an embodiment of the present invention. Specifically, FIG. 5 shows the state before being formed into a cylindrical shape. As shown in FIG. 5, the second sheet-like material 120 has a positioning adhesive layer 131 on which positioning glue is applied spirally along the axial direction.

As described above, since the positioning adhesive layer 131 has an adhesive pattern in which the positioning adhesive is applied spirally along the axial direction, the amount of adhesive applied can be reduced compared to the case where the positioning adhesive layer is provided on the entire surface. can be reduced.

FIG. 6 is another developed view showing the second sheet-like material of the cylindrical body according to an embodiment of the present invention. Specifically, FIG. 6 shows the state before being formed into a cylindrical shape. As shown in FIG. 6, the second sheet material 120 has a positioning adhesive layer 131 coated with three positioning glues in a straight line parallel to the axial direction.

In this way, since the positioning adhesive layer 131 has an adhesive pattern in which three positioning adhesives are applied in a straight line parallel to the axial direction, the adhesive The amount of coating can be reduced.

FIG. 7 is another developed view showing the second sheet material of the cylindrical body according to an embodiment of the present invention. Specifically, FIG. 7 shows the state before being formed into a cylindrical shape. As shown in FIG. 7, the second sheet-like material 120 has a positioning adhesive layer 131 coated with three positioning glues in a straight line perpendicular to the axial direction. Note that two or more positioning glues may be applied.

In this way, since the positioning adhesive layer 131 has an adhesive pattern in which three positioning glues are applied in a straight line perpendicular to the axial direction, compared to the case where the positioning adhesive layer is provided on the entire surface, The amount of adhesive applied can be reduced.

In addition, by reducing the amount of adhesive applied using the second sheet-like material 120 shown in FIGS. 4 to 7, it is possible to reduce the amount of adhesive that is produced by heating or burning from the cylindrical body 100 applied to flavor-producing articles or smoking articles. Since the adhesive component is reduced, deterioration of the flavor and taste of flavor-producing articles and smoking articles is suppressed.

Furthermore, by reducing the amount of adhesive applied, costs are also reduced. In addition, by reducing the amount of adhesive applied, the amount of adhesive residue adhering to the manufacturing equipment for the cylindrical body 100 is reduced, so the risk of stopping the manufacturing equipment is reduced, and the time required to clean the adhesive debris is reduced. This makes it possible to improve the productivity of the cylindrical body 100.

In addition, after the cylindrical body 100 is incorporated into a semi-finished product of a flavor generating article or a smoking article, a laser beam is irradiated from the outer periphery to the inner periphery of the cylindrical body 100, and the material at the irradiated area is burned. , ventilation holes penetrating the cylindrical body 100 may be formed intermittently over the entire circumference in the circumferential direction. At this time, if the adhesive is applied to the entire surface between the first sheet-like material 110 and the second sheet-like material 120, there is a risk that the combustion ash of the adhesive will clog the vent when forming the vent.

The paper constituting the cylindrical body 100 is made of organic wood pulp (almost pure cellulose from which lignin, hemicellulose, etc. contained in trees have been removed) and an inorganic filler (calcium carbonate), and cannot be irradiated with a laser beam. The combustion ash produced by this method is mainly composed of calcium carbonate.

On the other hand, the positioning adhesive layer 131, the first seam adhesive layer 132, and the second seam adhesive layer 133 are made of, for example, a mixture of organic polymers such as modified starch, vinyl acetate, or ethylene vinyl acetate, alcohol, and water. It is a forged product, and the combustion ash produced by laser beam irradiation is mixed with organic polymers left over from combustion.

Therefore, the combustion ash in the vents formed at the locations where the positioning adhesive layer 131, the first seam adhesive layer 132, and the second seam adhesive layer 133 are applied is a mixture of calcium carbonate and organic polymer, and The ash is more sticky and tends to block the air holes than the combustion ash mainly composed of calcium carbonate in the air holes formed in the areas where the adhesive layer 131, the first seam adhesive layer 132, and the second seam adhesive layer 133 are not applied.

Therefore, as shown in FIGS. 4 to 7, the positioning adhesive layer 131 applied to the second sheet material 120 is formed into an adhesive pattern in which positioning glue (adhesive) is applied in a linear manner. Compared to the case where the adhesive layer is provided on the entire surface, the probability that a vent hole will be formed in the area where the positioning adhesive layer 131 is applied can be reduced, and the combustion ash of the adhesive can be suppressed from clogging the vent hole. can do.

Next, a method for manufacturing the cylindrical body 100 will be explained. FIG. 8 is a configuration diagram showing a cylindrical body manufacturing apparatus according to an embodiment of the present invention. In the cylindrical body manufacturing apparatus 1 shown in FIG. 8, a sheet material 24 having an appropriate width is pulled out from a bobbin (not shown) of a sheet material supply device 22 in a conveying direction 34, and is drawn out in a plurality of directions. It is conveyed in the longitudinal direction via the conversion roller 41.

The sheet material 24 is cut in the longitudinal direction within the cutting section 23. Specifically, the sheet material 24 is cut into a first sheet material 110 having a first width and a second sheet material 120 having a second width. The cut first sheet material 110 and second sheet material 120 are conveyed in parallel via direction change rollers 41 and separated from each other by lateral conveyance rollers 32.

After the direction of the second sheet-like material 120 is changed by the direction changing roller 41, the positioning adhesive layer 131, the first seam adhesive layer 132, and the second seam adhesive layer are applied over the entire length in the longitudinal direction by the gluing unit 25 (applying unit). 133 (see FIG. 3) is applied (coating process). Here, the positioning adhesive layer 131 has an adhesive pattern in which positioning paste (adhesive) is applied in a linear manner (see FIGS. 4 to 7).

Subsequently, the second sheet material 120 is humidified by the humidification nozzle 26 (humidification section) (humidification step). The humidifying nozzle 26 sprays water onto the surface of the second sheet material 120 on which the positioning adhesive layer 131 is applied. Note that the humidifying nozzle 26 may spray alcohol onto the second sheet material 120 instead of water, or may spray steam onto the second sheet material 120.

As a result, the humidity of the area where the positioning adhesive layer 131, the first seam adhesive layer 132, and the second seam adhesive layer 133 of the second sheet-like material 120 are applied becomes equal to that of the other areas, so that When the two-sheet material 120 is formed into a cylindrical shape, it can be uniformly deformed, so that the cylindrical body 100 with high roundness can be obtained.

On the other hand, the first sheet-like material 110 is conveyed in a state separated from the second sheet-like material 120, and its position is shifted in the transverse direction with respect to the conveyance direction by the position shifting section 29. Thereafter, the first sheet-like material 110 and the second sheet-like material 120 are integrated by the tension roller pair 28 (adhesion section) (adhesion step).

As a result, the first sheet-like material 110 and the second sheet-like material 120 are adhered to each other so that their ends in the width direction perpendicular to the longitudinal direction do not overlap with each other. Specifically, the first body part 111 and the second body part 121 are adhered to each other by the positioning adhesive layer 131 and the first seam adhesive layer 132 applied to the second sheet-like material 120 (see FIG. 3). .

Note that the cylindrical body manufacturing apparatus 1 includes a sensor that detects the ends of the first sheet-like material 110 and the second sheet-like material 120 in the width direction, and a sensor that detects the ends of the first sheet-like material 110 and the second sheet-like material 120. A control mechanism may be provided to control the amount of positional deviation between the two.

Next, the first sheet-like material 110 and the second sheet-like material 120, which are mutually shifted and adhered, are conveyed to the molding device 30 (forming section). In the forming device 30, an endless forming belt 43 is guided endlessly via a plurality of direction changing rollers 41. The first sheet material 110 and the second sheet material 120 conveyed to the molding device 30 are pressed against the molding belt 43 by the pressing section 44 .

Thereafter, the first sheet-like material 110 and the second sheet-like material 120 are formed into a cylindrical continuous body 31 in the forming device 30 by a known method described in, for example, Japanese Patent Application Publication No. 2018-121628. (molding process). At this time, the first extension part 112 and the second extension part 122 are adhered to each other by the second seam adhesive layer 133 applied to the second sheet material 120 (see FIG. 3).

Subsequently, the first sheet material 110 and the second sheet material 120 formed into the cylindrical continuous body 31 are heated by the heating unit 37, whereby the positioning adhesive layer 131, the first seam adhesive layer 132, and The second seam adhesive layer 133 is cured. Further, the second sheet material 120 humidified by the humidifying nozzle 26 is also dried in the heating section 37 .

Next, the first sheet material 110 and the second sheet material 120 formed into the cylindrical continuous body 31 are cut into a predetermined length by the cutting section 38 (cutting section) (cutting step), and the cylindrical continuous body 31 is cut into a predetermined length (cutting step). A body 100 is formed. In addition, in the cylindrical body manufacturing apparatus 1, the first sheet-like material 110 and the second sheet-like material 120 may be replaced with each other.

Next, the results of various experiments conducted using the cylindrical body manufacturing apparatus 1 will be explained. First, an experiment was conducted to find appropriate humidification conditions using the humidification nozzle 26. FIG. 9 is an explanatory diagram showing experimental results of humidification conditions in a cylindrical body manufacturing apparatus according to an embodiment of the present invention. Here, an experiment was conducted with different humidification conditions for the case where three positioning glues were applied to the second sheet material 120 in a straight line parallel to the axial direction (see FIG. 6).

As shown in FIG. 9, the cylindrical body 100 was manufactured while changing the humidification conditions from level 1 to level 9 regarding the amount of water, the injection pressure, and the distance from the humidification nozzle 26 to the second sheet material 120 (humidification nozzle distance). However, it was confirmed that level 6 (water amount 6.34 mg/bottle, injection pressure 0.05 MPa, humidifying nozzle distance 17 mm) was appropriate in terms of roundness and circumferential length.

Subsequently, according to the level 6 shown in FIG. 9, a cylindrical body 100 (see FIG. 5) was manufactured by applying positioning glue to the second sheet material 120 in a spiral shape along the axial direction. The first extending portion 112 and the second extending portion 122 were not properly bonded together by the adhesive layer 133 (see FIG. 3).

Therefore, an experiment was conducted on the cylindrical body 100 (see FIG. 5) in which positioning glue was applied spirally along the axial direction to the second sheet-like material 120 while changing the amount of water. As a result, it was confirmed that the water amount of 28.20 mg/piece was appropriate for the cylindrical body 100 coated with positioning glue in a spiral shape. FIG. 10 shows humidification conditions for each adhesive pattern in the cylindrical body manufacturing apparatus 1.

Next, the second sheet-like material 120 is coated with positioning glue in a spiral shape along the axial direction (see FIG. 5), and the second sheet-like material 120 is coated with positioning glue in a straight line parallel to the axial direction. Next, an experiment was conducted on the cylindrical body 100 (see FIG. 4) coated with two pieces of positioning glue, while changing the amount of the positioning adhesive layer 131 applied.

As a result, for the cylindrical body 100 coated with positioning glue in a spiral shape, an application amount of 20g/500m (4.8mg/piece) is appropriate, and for the cylindrical body 100 coated with two strands of positioning glue, It was confirmed that 25g/500m (3.0mg/piece x 2) was appropriate. FIG. 11 shows the results of comparing the coating amount of the positioning adhesive layer 131 on the cylindrical body 100 with that of a conventional product.

As shown in FIG. 11, in the cylindrical body 100 coated with positioning glue in a spiral shape, the coating amount of the positioning adhesive layer 131 is 80% compared to the conventional product (coating amount: 100 g/500 m (24 mg/piece)). can be reduced. Further, in the case of the cylindrical body 100 coated with two positioning adhesives, the amount of the positioning adhesive layer 131 applied can be reduced by 75% compared to the conventional product.

Subsequently, the cylindrical body 100 (Fig. 5), and a cylindrical body 100 (see FIG. 4) in which two positioning glues were applied in a straight line parallel to the axial direction to the second sheet-like material 120 were manufactured, and various physical properties were measured. FIG. 12 shows the results of comparing various physical properties of the cylindrical body 100 with a standard product and a conventional product.

Here, regarding the cylindrical body 100 coated with positioning glue in a spiral shape and the cylindrical body 100 coated with two positioning glues, in consideration of the influence of humidification by the humidifying nozzle 26, immediately after the formation of the cylindrical body 100, And the physical properties were measured after 24 hours. Moreover, the moisture content was measured after one week.

As shown in FIG. 12, it was confirmed that immediately after the cylindrical body 100 was formed, it had the same weight as the conventional product, but as time passed, the water content decreased and the weight tended to become lighter. It was also confirmed that the circumference length and hardness values changed as time passed as water content decreased.

Furthermore, it was confirmed that the roundness of both the cylindrical body 100 coated with positioning glue in a spiral shape and the cylindrical body 100 coated with two pieces of positioning glue was equivalent to that of the standard product. Furthermore, for both the cylindrical body 100 coated with positioning glue in a spiral shape and the cylindrical body 100 coated with two positioning glues, the joint portion between the first extension part 112 and the second extension part 122 is Since the structure is the same as the conventional product, the seam peel strength shows the same value as the conventional product.

Furthermore, by setting the area of the positioning adhesive layer 131 to 10% or more and 50% or less of the area of the overlapping portion of the first body part and the second body part, the first sheet-like material 110 and the second sheet-like material 120 can be It is possible to obtain a cylindrical body that suppresses poor adhesion with the cylindrical body, has excellent roundness, and has little effect on flavor and taste.

Although the embodiments of the present invention have been described above, the embodiments of the invention described above are for facilitating understanding of the present invention, and are not intended to limit the present invention. The present invention may be modified and improved without departing from its spirit, and the present invention includes equivalents thereof. In addition, it is possible to combine or omit each component described in the claims and the specification to the extent that at least part of the above-mentioned problems can be solved or at least part of the effect can be achieved. .

DESCRIPTION OF SYMBOLS 1... Cylindrical body manufacturing device 22... Sheet-like material supply device 23... Cutting section 24... Sheet-like material 25... Gluing section 26... Humidifying nozzle 28... Tension roller pair 29... Position shifting section 30... Forming device 31... Cylindrical Continuous body 32... Lateral conveyance roller 34... Conveyance direction 37... Heating section 38... Cutting section 41... Direction changing roller 43... Forming belt 44... Pressing section 100... Cylindrical body 110... First sheet material 111... First Main body part 112...First extension part 120...Second sheet material 121...Second main body part 122...Second extension part 130...Adhesive layer 131...Positioning adhesive layer 132...First seam adhesive layer 133...Second seam adhesive layer

Claims

A method for manufacturing a cylindrical body, the method comprising:
an application step of applying glue for bonding the first material and the second material to each other in an adhesive pattern including at least a linear pattern on at least one of the first material and the second material that are conveyed in the longitudinal direction; ,
a humidifying step of humidifying at least one of the first material and the second material to which the glue is applied;
an adhesion step of overlapping and adhering the first material and the second material in a state in which the ends in the width direction perpendicular to the longitudinal direction are shifted from each other so that they do not overlap;
a molding step of molding the first material and the second material, which are mutually shifted and adhered, into a cylindrical continuous body;
A method for producing a cylindrical body, comprising a cutting step of cutting the continuous body into a cylindrical body.
A method for manufacturing a cylindrical body according to claim 1, comprising:
The humidification step is a step of spraying water or alcohol onto at least one of the first material and the second material.
Method for manufacturing a cylindrical body.
A method for manufacturing a cylindrical body according to claim 1, comprising:
The humidifying step is a step of spraying steam onto at least one of the first material and the second material.
Method for manufacturing a cylindrical body.
A method for manufacturing a cylindrical body according to any one of claims 1 to 3, comprising:
In the application step, apply the glue so that the area to which the glue is applied is 10% or more and 50% or less of the area of the overlapping portion of the first material and the second material overlapped in the adhesion step. It is a process of
Method for manufacturing a cylindrical body.
An apparatus for manufacturing a cylindrical body,
an application unit that applies glue for bonding the first material and the second material to each other in an adhesive pattern including at least a linear pattern on at least one of the first material and the second material that are conveyed in the longitudinal direction; ,
a humidifying unit that humidifies at least one of the first material and the second material to which the glue is applied;
a position shifting part that shifts the positions of the first material and the second material so that their ends in the width direction perpendicular to the longitudinal direction do not overlap;
an adhesive part that overlaps and adheres the first material and the second material that are shifted from each other;
a molding section that molds the first material and the second material, which are adhered to each other in a shifted manner, into a cylindrical continuous body;
A cylindrical body manufacturing apparatus, comprising: a cutting section that cuts the continuous body into cylindrical bodies.