Method of manufacturing a roll of toilet paper

Abstract

The present invention provides a roll toilet paper which has excellent deodorizing effect against urine odor and feces odor. The above problem is solved by a roll toilet paper which is formed by winding a strip-shaped toilet paper on a paper tube, wherein the roll toilet paper contains a catechin-based deodorizing agent, a tannin-based deodorizing agent, and a silver-loaded zeolite.

Description

Technical Field

[0001] This invention relates to a roll of toilet paper made by winding a strip of toilet paper onto a paper tube, and a method for manufacturing the roll of toilet paper. Background Technology

[0002] In toilet spaces, foul odors sometimes originate from urine and feces, so deodorization technologies and fragrance-based odor mitigation technologies for toilet spaces have been proposed.

[0003] For example, there is a known technique of coating the inner surface of the toilet paper roll, which is commonly used in toilet spaces, with a deodorizing agent such as p-dichlorobenzene containing fragrance (Patent Document 1 below). Additionally, there is a known technique that utilizes the fact that ammonia, which causes the odor of urine in toilets, is alkaline, and impregnates the toilet paper roll with a deodorizing agent that exhibits a deodorizing effect through neutralization (Patent Document 2 below). Furthermore, there is a known technique that modulates or masks the odor by mixing the fragrance imparted to the toilet paper roll or toilet paper with the odor of methanethiol and hydrogen sulfide, which cause the odor of feces (Patent Document 3 below).

[0004] Existing technical documents

[0005] Patent documents

[0006] Patent Document 1: Japanese Utility Model Publication No. 56-111890

[0007] Patent Document 2: Japanese Patent Application Publication No. 2017-56210

[0008] Patent Document 3: Japanese Patent Application Publication No. 2017-176571 Summary of the Invention

[0009] The problem that the invention aims to solve

[0010] The main components of fecal odor, which is a major cause of foul smells in toilet spaces, are methanethiol, trimethylamine, and hydrogen sulfide, while the main component of urine odor is ammonia.

[0011] While the p-dichlorobenzene disclosed in Patent Document 1 excels in deodorizing urine odors originating from ammonia, it may not be effective against the causative components of fecal odor. Furthermore, the technology disclosed in Patent Document 2 may not be effective against acidic fecal odor components such as hydrogen sulfide. Moreover, although the technology disclosed in Patent Document 3 excels in masking methanethiol and hydrogen sulfide, it may not be effective against ammonia odor. Additionally, the technologies in Patent Documents 1 and 3 utilize fragrance to mask malodors, making it difficult to produce unscented products that do not require a pleasant fragrance.

[0012] Furthermore, in recent years, due to the impact of COVID-19 and other factors such as restrictions on going out, working from home, and studying from home, people have spent more time at home. Depending on individual differences, there has been an increase in people worrying about odors in their homes that have not been noticed until now, especially the foul smells such as fecal and urine odors in toilet spaces that have been used more frequently. As a result, there is a demand for more effective deodorization technologies for toilet spaces.

[0013] Therefore, the main objective of this invention is to provide a roll of toilet paper and a method for manufacturing the same, which has excellent deodorizing effects on methanethiol, trimethylamine, hydrogen sulfide, and ammonia, which are the main components of urine and fecal odor, and is also fragrance-free.

[0014] Methods for solving problems

[0015] The first aspect of the present invention that solves the above-mentioned problems is a roll of toilet paper, which is made by winding a strip of toilet paper onto a paper tube, characterized in that...

[0016] The toilet paper roll contains tannin-based deodorants, catechin-based deodorants, and silver-loaded zeolite.

[0017] The second method is to use the toilet paper from the first method mentioned above,

[0018] The paper tube is treated with catechin-based deodorizers, tannin-based deodorizers, and silver-loaded zeolite, but no acrylic resin is applied to the portion where this treatment is performed.

[0019] The third method is to incorporate the toilet paper from the first or second method mentioned above into the roll of toilet paper.

[0020] Catechin-based deodorants, tannin-based deodorants, and silver-loaded zeolites adhere to the fibers of the paper tube base paper that makes up the inner circumference of the paper tube or remain in the gaps between the fibers.

[0021] The fourth method is a method for manufacturing toilet paper rolls, which is a method for manufacturing toilet paper rolls made by winding a strip of toilet paper onto a paper tube, characterized in that...

[0022] The manufacturing method of the toilet paper roll includes the following steps:

[0023] The solution containing diethylene glycol monoethyl ether and isopropanol is mixed with catechin-based deodorant, tannin-based deodorant and silver-loaded zeolite.

[0024] The mixed drug solution was prepared at 3.0 g / m³. 2 ~6.0g / m 2 Coated on paper with a thickness of 100μm to 400μm and a basis weight of 130 g / m² 2 ~200g / m 2The paper tube base paper, thereby imparting catechin-based deodorants, tannin-based deodorants, and silver-loaded zeolite to the paper tube base paper; and

[0025] Using this paper tube base paper, roll toilet paper is manufactured in such a way that the surface to which the aforementioned treatment is applied becomes the inner surface of the paper tube.

[0026] The effects of the invention

[0027] As described above, according to the present invention, it is possible to provide toilet paper rolls and a method for manufacturing the same, which have excellent deodorizing effects on methanethiol, trimethylamine, hydrogen sulfide, and ammonia, which are the main components of urine and fecal odor, and are also fragrance-free. Attached Figure Description

[0028] Figure 1 This is a diagram illustrating the toilet paper roll of the present invention.

[0029] Figure 2 This is a schematic diagram showing a cross-section of the paper tube of the present invention.

[0030] Figure 3 This is an explanatory diagram illustrating an example of the manufacturing process of the toilet paper roll of the present invention.

[0031] Figure 4 This is a diagram illustrating an example of a method for manufacturing a paper tube according to the present invention.

[0032] Figure 5 This is a cross-sectional view showing an example of the structure of the paper tube base paper of the present invention.

[0033] Figure 6 This is an example of a toilet paper product made by film packaging the toilet paper rolls of the present invention. Detailed Implementation

[0034] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[0035] "Rolled toilet paper"

[0036] like Figure 1 As shown, in this embodiment, the toilet paper roll has a strip of toilet paper S3 wound on the paper tube 11. Its size is not limited, but preferably, the width L1 is 100-120 mm, the diameter L2 is 100-120 mm, the winding length (total length of the toilet paper) is 18-80 m, and the paper tube diameter is 35 mm-50 mm.

[0037] Regarding toilet paper S3, the basis weight of each layer can be set to 11.0–25.0 g / m³. 2 Toilet paper with a thickness of 100-180μm, consisting of 1 to 4 layers.

[0038] It should be noted that the basis weight is the value measured based on the basis weight measurement method of JIS P 8124 (1998), and the paper thickness is the average value of 5 measurements taken under the same conditions using a dial-type thickness gauge (thickness measuring instrument) "PEACOCK G type" (manufactured by Ozaki Corporation) after fully conditioning under the conditions of JIS P 8111 (1998).

[0039] This toilet paper roll is characterized by being infused with catechin-based deodorants, tannin-based deodorants, and silver-loaded zeolite. Other deodorants may also be incorporated. Among polyphenol-based deodorants known as deodorants that selectively react chemically with substances causing odors in toilet spaces, such as ammonia, the use of tannin-based and catechin-based deodorants, and silver-loaded zeolite (which not only adsorbs volatile components onto porous materials), provides an extremely effective and rapid reduction of odors based on methanethiol, trimethylamine, hydrogen sulfide, and ammonia, as well as excellent deodorizing effects for urine and fecal odors. Furthermore, catechin-based deodorants, tannin-based deodorants, and silver-loaded zeolite are all odorless or almost odorless, thus allowing for the production of substantially unscented toilet paper rolls.

[0040] Catechin-based deodorants contain at least one of catechins and catechin derivatives, with at least one of these as the main active ingredient. Examples of catechins include catechin, epicatechin, epigallocatechin, epicatechin gallate, and epigallocatechin gallate. They may also contain various catechins such as tea catechin. Additionally, catechins can be extracted from plants, as with tea catechin. At least one of the catechins and catechin derivatives possesses bactericidal properties. Therefore, it can inhibit the growth of bacteria that decompose urine and produce ammonia in the toilet space. Furthermore, the use of plant-derived catechins provides users with a sense of reassurance from natural sources.

[0041] Tannin-based deodorants contain at least one of tannins and tannin derivatives, with at least one of tannins and tannin derivatives as the main active ingredient. Tannins and tannin derivatives have large molecular weights and retain a large number of phenolic hydroxyl groups within the molecule, thus exhibiting excellent reactivity with ammonia, a major component of odors in toilet spaces, resulting in superior deodorizing performance. Tannins and tannin derivatives can be condensed or hydrolyzed forms. They can also be mixed. Additionally, they may contain various tannins such as tannins from black tea, persimmon tannins, and persimmon tannin derivatives. The fact that tannins can be derived from plants provides a sense of reassurance to the user. As a tannin-based deodorant, at least one of persimmon tannins and persimmon tannin derivatives derived from persimmons is particularly preferred as the main active ingredient. Persimmon tannins and persimmon tannin derivatives derived from persimmons have particularly large molecular weights and excellent deodorizing effects. Furthermore, in this invention, catechins and tannins are distinguished. Additionally, tannic acid is included in the tannins.

[0042] In silver-loaded zeolites, the silver exists in the form of silver ions, silver clusters, and metallic silver, with at least silver ions present. It should be noted that silver-loaded zeolites can also support substances other than silver. Furthermore, the silver-loaded zeolite used in this invention is not limited; examples include zeolites contained in Zeomic (manufactured by Sinanen Zeomic Co., Ltd.) and Theobaset AG-30N (manufactured by Yamato Chemical Industry Co., Ltd.). In particular, the silver-loaded zeolite contained in Theobaset AG-30N is especially suitable.

[0043] There are no restrictions on the content of catechin-based deodorants, tannin-based deodorants, and silver-loaded zeolite in toilet paper rolls. Adjustments can be made according to the types of catechins, tannins, and silver-loaded zeolite.

[0044] The application of the catechin-based deodorant, tannin-based deodorant, and silver-loaded zeolite in the toilet paper roll 10 is not limited, as long as it is applied to at least one of the paper tube 11 and the toilet paper S3. The application portions of the catechin-based deodorant, tannin-based deodorant, and silver-loaded zeolite can be different. Preferably, the toilet paper roll in which all three components—catechin-based deodorant, tannin-based deodorant, and silver-loaded zeolite—are applied to the paper tube 11. The paper tube 11 is the last portion remaining even after using toilet paper S3, thus ensuring that the deodorizing effect continues until all toilet paper S3 is used.

[0045] Furthermore, in the toilet paper roll 10, when catechin-based deodorants, tannin-based deodorants, and silver-loaded zeolite are applied to the paper tube 11, it is preferable that acrylic resin is not applied to this application portion. Acrylic resin makes it difficult for the catechin-based deodorants, tannin-based deodorants, and silver-loaded zeolite to adhere properly to the paper tube. Additionally, there is a possibility that coating each deodorant may reduce air permeability.

[0046] As a method of imparting catechin-based deodorants, tannin-based deodorants, and silver-loaded zeolite, the following are particularly preferred: Figure 2 As shown, the catechin-based deodorant, tannin-based deodorant, and silver-loaded zeolite are attached to the fibers of the paper tube base paper 12 constituting the inner circumferential surface of the paper tube 11, or remain in the gaps between the fibers. That is, the paper tube 11 has a portion 40 containing the catechin-based deodorant, tannin-based deodorant, and silver-loaded zeolite in the thickness direction from the inner circumferential surface to the outer circumferential surface. Unlike the outer circumferential surface of the toilet paper S3, which is repeatedly rolled, the inner circumferential surface of the paper tube 11 is exposed to the atmosphere in the toilet space, thus increasing the chance of contact with malodorous components and resulting in a better deodorizing effect. Furthermore, in particular, since the catechin-based deodorant and tannin-based deodorant are solutions when applied, and the silver-loaded zeolite is a discrete dispersion, for example, if they are applied individually or mixed to the inner circumferential surface of the paper tube 11 through coating or the like, the catechin-based deodorant, tannin-based deodorant, and silver-loaded zeolite enter from the inner circumferential surface of the paper tube towards the outer circumferential surface in the thickness direction, becoming attached to the fibers of the paper tube base paper or remaining in the gaps between the fibers. In this configuration, the catechin-based deodorant, tannin-based deodorant, and silver-loaded zeolite are less likely to detach from the inner circumferential surface of the paper tube. For example, when the toilet paper S3 is pulled out, even if the inner circumferential surface of the paper tube rubs against a portion of the paper holder, the catechin-based deodorant, tannin-based deodorant, and silver-loaded zeolite will not detach from the inner circumferential surface of the paper tube, and the deodorizing effect is fully maintained. In addition, sufficient contact between the inner surface of the paper tube and the malodorous components floating in the toilet space can be ensured, thereby exerting excellent deodorizing function.

[0047] The paper tube 11 of the toilet paper roll 10 preferably uses paper with a thickness of 100-400 μm and a basis weight of 130-200 g / m³. 2 The paper tube base paper has a suitable fiber density due to its thickness and basis weight. Catechin-based deodorants, tannin-based deodorants, and silver-loaded zeolite can easily adhere to the fibers of the paper tube base paper 12 or remain in the inter-fiber gaps. Therefore, especially when entering from the inner circumferential surface of the paper tube 11 towards the outer circumferential surface in the thickness direction, it can easily adhere to the fibers of the paper tube base paper or remain in the inter-fiber gaps, and can effectively contact odor components through the inner surface of the paper tube, thus exerting excellent deodorizing function.

[0048] Furthermore, the paper tube base paper 12 constituting the paper tube 11 is preferably of a density of 0.2 to 1.8 g / cm³.3 The tensile strength (longitudinal) is 4.0–12.0 kN / m, the tensile strength (transverse) is 1.0–7.0 kN / m, and the Bekk smoothness is 10–80 seconds. During manufacturing, it allows for easy impregnation of each deodorant within the paper layer. Furthermore, it ensures better retention of the deodorant and more suitable contact between the deodorant and odor-causing components that evaporate into the toilet space.

[0049] Furthermore, the paper tube base paper 12 constituting the paper tube 11 is required to have sufficient strength such that the paper tube 11 will not be crushed during the winding of toilet paper S3 during manufacturing, and further when used as toilet paper roll 10 or during transportation. From this point of view, regarding the paper tube base paper, it is preferable that the tensile strength (longitudinal) is 4.0 to 12.0 kN / m and the tensile strength (transverse) is 1.0 to 7.0 kN / m.

[0050] It should be noted that the density measurement method in this invention and this specification is based on the method described in JIS P 8118 (1998). In addition, Bekk smoothness is based on JIS P 8119 (1998), and tensile strength is based on the method described in JIS P 8113 (2006).

[0051] On the other hand, 10 rolls of toilet paper Figure 6 The corner-support packaging method shown mostly utilizes resin films for packaging to produce product S. When using this method, in the toilet paper roll 10 of the present invention, it is preferable to use a film with an oxygen permeability of 0.1 to 50 ml / m³. 2 • The deodorizing agent is packaged with a gas-barrier resin film 20 to prevent the following situations: during transportation to the store after manufacturing or during the display of the product in the store, the odor components come into contact with the deodorant, or the deodorant is accidentally volatilized, thereby reducing the deodorizing function.

[0052] Examples of films made from this resin include polyethylene films, polypropylene films, polyethylene terephthalate films, and polyvinylidene chloride films. The method for measuring oxygen permeability in this invention and this specification is based on the method described in JIS K 7126 (2006) (isobaric method: MOCON method / 23℃×65%RH).

[0053] "Manufacturing method of toilet paper rolls"

[0054] Next, mainly refer to Figures 3-6 The manufacturing method of the toilet paper roll according to this embodiment will be described. The manufacturing method of the toilet paper roll 10 of this embodiment includes a step (A) of manufacturing a long paper tube 11L, a semi-finished product manufacturing step (B), and a cutting step (C). However, the manufacturing method of the toilet paper roll of the present invention is not limited to the method of this embodiment.

[0055] In the process of manufacturing long paper tubes 11L ( Figure 3 In (A) of the middle, also as Figure 4 As shown, two strips of paper tube base paper 12, 12 are fed from blank rolls 12A, 12A respectively, and glue 30 is applied to designated positions using a glue roller 13. While the glued portions overlap, the paper tubes are spirally wound onto a shaft 15 using a core winding machine 14. Then, the shaft is pulled out, and the paper tubes are cut into specified lengths corresponding to the production product using a slitting machine 16, thereby forming cylindrical strips of paper tube 11L. The amount of glue applied is not particularly limited, ranging from 0.1 to 5.0 g / m³. 2 Left and right. In addition, for adhesive 30, known paper tube adhesives can be used within the scope of not impairing the effects of the present invention, such as acrylic adhesives, hot melt adhesives, starch pastes, PVA (polyvinyl alcohol), etc.

[0056] Furthermore, the base papers 12, 12 of each paper tube can be made from different raw materials. For example, printing can be performed on one of them, or their respective basis weights can be changed. In this invention, the base papers 12, 12 of the paper tubes are not necessarily the same paper tube base papers.

[0057] Next, in parallel with or after the manufacture of the long paper tube 11L, in the semi-finished product manufacturing process ( Figure 3 In (B) of the process, semi-finished product 10R is manufactured. It should be noted that semi-finished product 10R is a common term in the industry, and refers to an intermediate product with the same diameter as the final product, the toilet paper roll 10, and a width equal to that of the final product.

[0058] In the manufacturing of the semi-finished product 10R, toilet paper base sheets S1, S1 with a width substantially the same as the long paper tube 11L are continuously or intermittently fed from the large diameter rolls JR, JR and wound to form the semi-finished product 10R. This winding can be performed using a paper winding machine X2. It should be noted that in the illustrated example, the toilet paper base sheets S1, S1 are fed from the two large diameter rolls JR, JR, forming a double-layered toilet paper base sheet S2 through the overlapping portion 51. Then, contact embossing CE is applied using a known contact embossing device 54 and a perforation line forming device 70, and perforation lines (not shown) are formed. Finally, the paper is wound using a winding device 75 to form a double-layered structure.

[0059] It should be noted that, in the illustrated embodiment, toilet paper sheets are fed from two large-diameter rollers to form a double-layered toilet paper base S2, but in this invention, it is not limited to these two layers; it can also be one layer or three or more layers. Furthermore, in the case of a multi-layered structure, the basis weight, physical properties, etc., of each base paper do not need to be the same.

[0060] Next, after manufacturing the semi-finished product 10R in this way, multiple copies of the semi-finished product 10R are stored using the known semi-finished product storage device X3, while being moved to the subsequent semi-finished product cutting device X4. Then, as... Figure 3 As shown in (C), the semi-finished product 10R is cut into product widths using a known semi-finished product cutter 76 to produce individual rolls of toilet paper 10.

[0061] like Figure 6 As shown, for each of the obtained toilet paper rolls 10, multiple rolls are collected and packaged using a resin film to produce a toilet paper roll product. At this time, if a resin film with an oxygen permeability of 0.1–50 ml / m is used… 2 Packaging with a gas-barrier resin film is a preferred packaging material, ensuring that odor components do not come into contact with the deodorant during transportation to the store after manufacturing or during product display in the store, or that the deodorant does not accidentally evaporate, thus maintaining its deodorizing function.

[0062] In the manufacturing method of the toilet paper roll 10 of the present invention, at least one of the toilet paper S3 and the paper tube base paper 12 that subsequently constitutes the paper tube 11 is coated and endowed with a catechin-based deodorant, a tannin-based deodorant, and silver-loaded zeolite. However, generally, the higher the weight per unit area of ​​the paper tube base paper 12, the higher the strength, and therefore the easier it is to coat the paper tube with the solution. In addition, regarding the toilet paper S3, since hydrolysis is required, the wetting force is low. Therefore, it is easier to manufacture the paper tube base paper 12 than to endow the toilet paper S3, and therefore preferred. It should be noted that the specific examples and preferred examples of the catechin-based deodorant, tannin-based deodorant, and silver-loaded zeolite in this manufacturing method are the same as those described in the above description of the toilet paper roll 10.

[0063] The coating of catechin-based deodorants, tannin-based deodorants, and silver-loaded zeolite with toilet paper S3 and paper tube base paper 12 can be performed, for example, by various known coating machines, flexographic printing machines, gravure printing machines, inkjet printing machines, and spray coating devices. The catechin-based deodorants, tannin-based deodorants, and silver-loaded zeolite can be applied separately, but it is preferable to apply them as a deodorant solution 40 containing catechin-based deodorants, tannin-based deodorants, and silver-loaded zeolite through a mixing step before application. This reduces the need for coating equipment and manufacturing processes. Furthermore, the catechin-based deodorants and tannin-based deodorants can be extract mixtures pre-mixed with at least one of catechins and catechin derivatives, and at least one of tannins and tannin derivatives. An example of such extract mixtures is the extract mixture manufactured by Stanley Pharmaceuticals Ltd.

[0064] In this case, it is particularly preferable to prepare a coating solution by mixing a deodorant solution containing catechin-based deodorants, tannin-based deodorants, and silver-loaded zeolite with a solution containing diethylene glycol monoethyl ether and isopropanol. For example... Figure 5 As shown, the deodorant solution 40 has good permeability to the paper tube base paper 12, easily allowing the deodorant solution 40 to be evenly impregnated into the paper layers of the paper tube base paper 12 without coating unevenness. That is, it allows catechin-based and tannin-based deodorants to penetrate into the fibers, thereby delivering the silver-loaded zeolite into the fibers. This achieves a previously unseen configuration, where the catechin-based, tannin-based, and silver-loaded zeolite are adhered to the fibers of the paper tube base paper constituting the inner circumference of the paper tube or retained in the inter-fiber gaps. In this configuration, as described above, no deodorant is coated, resulting in extremely high deodorizing effect. Furthermore, the solution containing diethylene glycol monoethyl ether and isopropanol preferably further contains 2,4,7,9-tetramethyl-5-decyn-4,7-diol, which facilitates coating. It should be noted that with only deodorant solution, the deodorant is difficult to penetrate into the base paper of the paper tube, and even if coated, it is prone to a so-called "bounce-out" state on the base paper. In addition, in previous individual applications, common acrylic resin adhesives tend to foam when mixed with deodorant solutions containing catechin-based deodorants, tannin-based deodorants, and silver-loaded zeolite. Furthermore, there is a concern that the deodorant may be masked after coating.

[0065] As an example, the location where the deodorant solution 40 is coated on the paper tube base paper 12 can be shown Figure 4 The front section of the core winding machine is shown. However, it is not specifically limited. It is preferable to assign a position to one side of the paper tube base paper 12 that forms the inner circumferential surface of the paper tube when it becomes the paper tube 11.

[0066] As the location where the deodorant solution containing various deodorants is applied to the S3 coating of toilet paper, it can be used to... Figure 3 The toilet paper base sheets S1, S1 at the front of the overlapping section 51 in the shown paper roll machine device X2 can be processed, and the double-layer toilet paper base sheet S2 at the rear of the overlapping section 51 can also be processed. It is not specifically limited.

[0067] When coating the paper tube base paper 12, it is preferable that the paper tube base paper 12 has a thickness of 100-400 μm and a basis weight of 130-200 g / m³. 2 Regarding the coating amount for coating the base paper 12 of the paper tube, it is preferably 3.0–6.0 g / m². 2 Coating is then applied. If the thickness of the base paper 12 for the paper tube is 100–400 μm and the basis weight is 130–200 g / m³, then... 2 , then Figure 5 The deodorant solution 40 applied as shown is easily penetrated. Additionally, if the application rate is 3.0–6.0 g / m²... 2This makes it easier to achieve a sufficient deodorizing effect. Additionally, if the density of the paper tube base paper 12 is 0.2–1.8 g / cm³, the deodorization effect will be more pronounced. 3 If the Bekk smoothness is 10-80 seconds, the deodorant solution's penetration becomes more reliable, and it is also easier to apply the deodorant solution 40. The proportions of catechin-based deodorants, tannin-based deodorants, and silver-loaded zeolite in the deodorant solution are not limited.

[0068] Through the manufacturing method described above, it is possible to produce toilet paper rolls that exhibit excellent deodorizing effects against methanethiol, trimethylamine, hydrogen sulfide, and ammonia, which are the main components of urine and fecal odor, and are also fragrance-free. It should be noted that, for example, when producing toilet paper rolls that impart a deodorizing agent to the toilet paper and do not have a coreless paper tube, the process (A) of manufacturing the long paper tube 11L may be omitted.

[0069] Example

[0070] Next, using examples, comparative examples, and blanks, and following the test method based on the "Deodorization Test Method of the General Incorporated Association Fiber Evaluation Technology Association", the deodorization effect against the main malodorous components in the toilet space, namely ammonia, trimethylamine, hydrogen sulfide, and methanethiol, was confirmed.

[0071] The samples for the embodiments, comparative examples, and billets were set with a width of 114 mm and an inner diameter of 41 mm. A paper tube. The paper tube is... Figure 4 The spiral paper tube is manufactured using the method shown.

[0072] In one embodiment, a deodorant solution containing a mixture of catechin-based deodorant, tannin-based deodorant, and silver-loaded zeolite is coated onto the inner circumferential surface of the inner paper tube base paper. The catechin-based deodorant, tannin-based deodorant, and silver-loaded zeolite adhere to the fibers of the paper tube base paper constituting the inner circumferential surface of the paper tube or remain in the inter-fiber gaps. In a comparative example, instead of the deodorant solution of the embodiment, a deodorant solution containing a mixture of catechin-based and tannin-based deodorant but without silver-loaded zeolite is coated onto the inner circumferential surface of the inner paper tube base paper. The blank is not treated with a deodorant.

[0073] The catechin-based and tannin-based deodorants in the examples and comparative examples are extract mixtures (#2571103) manufactured by Stanley Pharmaceutical Co., Ltd., containing tea catechins and persimmon tannins, which are used as the main active ingredients. In the examples, Zaobaset AG-30N, manufactured by Yamato Chemical Industry Co., Ltd., containing silver-loaded zeolite, was used. Furthermore, the deodorant solutions from the examples and comparative examples were mixed with a solution containing diethylene glycol monoethyl ether and isopropanol (Ni-FK MROP Nisu G-790, manufactured by Sakata Inx Co., Ltd.) and then applied. It should be noted that, in the embodiments, catechin-based deodorants and tannin-based deodorants were added to the solution containing a mixture of Zorbaset AG-30N, Niyu-FK MR OP Nisu G-790, and water in a volume ratio of 3:3:4 for adjustment. In both the embodiments and comparative examples, the amounts of catechin-based and tannin-based deodorants were adjusted to be the same.

[0074] (Adjustment of ammonia)

[0075] Fill a 5L PVDF odor bag with air. The PVDF odor bag is made by sealing a substance in which ammonia water is impregnated with filter paper (Advantec 100 CIRCLES). Use a syringe to draw air from the odor bag and inject it into the 5L PVDF odor bag containing the prepared paper tube. Immediately adjust the initial concentration of ammonia in the PVDF odor bag to 100ppm.

[0076] (Adjustment of trimethylamine)

[0077] Fill a 5L PVDF odor bag with air. The PVDF odor bag is made by sealing a substance in which a trimethylamine aqueous solution is impregnated with filter paper (Advantec 100 CIRCLES). Use a syringe to draw air from the odor bag and inject it into the 5L PVDF odor bag containing the other prepared paper tubes. Immediately adjust the initial concentration of trimethylamine in the PVDF odor bag to 28 ppm.

[0078] (Adjustment of hydrogen sulfide)

[0079] Fill a 5L PVDF odor bag with air. The PVDF odor bag is made by sealing a substance in which an aqueous solution of hydrogen sulfide is impregnated with filter paper (Advantec 100 CIRCLES). Use a syringe to draw air from the odor bag and inject it into the 5L PVDF odor bag containing a separately prepared paper tube. Immediately adjust the initial concentration of hydrogen sulfide in the PVDF odor bag to 4 ppm.

[0080] (Adjustment of methanethiol)

[0081] Fill a 5L PVDF odor bag with air. The PVDF odor bag is made by sealing a substance in which an aqueous solution of methanethiol is impregnated in filter paper (Advantec 100 CIRCLES). Use a syringe to draw air from the odor bag and inject it into the 5L PVDF odor bag containing a paper tube prepared separately. Immediately adjust the initial concentration of methanethiol in the PVDF odor bag to 8 ppm.

[0082] The concentrations of ammonia, trimethylamine, hydrogen sulfide, and methanethiol were measured as follows: After adjusting to the initial concentration, the concentrations were measured after 0 minutes, 30 minutes, and 60 minutes. The reduction rate of ammonia concentration was calculated based on these measurements. A Gastec PD-1B permeameter and a 3La gas detection tube were used in the measurements. The reduction rate was calculated as ((measurement value after 0 minutes - measurement value after 30 minutes or 60 minutes) / (measurement value after 0 minutes)) × 100. The results are shown in Table 1.

[0083] [Table 1]

[0084]

[0085] Regarding ammonia and trimethylamine, the examples, comparative examples, and preforms all showed high reduction rates after 30 minutes and 60 minutes, but the reduction rate after 30 minutes was the highest in the examples, demonstrating that the present invention achieves a rapid deodorization effect against malodors from ammonia and trimethylamine. Furthermore, it was confirmed that even in preforms without deodorant coating, a high reduction rate was achieved, indicating that the paper tube itself adsorbed a certain degree of odor. That is, regarding deodorization against ammonia, it was shown that the deodorant is preferably applied to the inner surface of the paper tube.

[0086] Regarding hydrogen sulfide, the comparative example and the billet showed almost no deodorization effect even after 60 minutes, while only the example showed a higher reduction rate after 30 minutes and 60 minutes. In particular, it was confirmed that the hydrogen sulfide could be rapidly deodorized by the silver-loaded zeolite, achieving a reduction rate of 82.5% after 30 minutes.

[0087] Regarding methanethiol, both the examples and the comparative examples showed deodorization effects compared to the preform, but the examples showed a reduction rate of about 6 times compared to the comparative examples, demonstrating a high deodorization effect.

[0088] In the embodiments, catechin-based and tannin-based deodorizers exhibit excellent deodorizing effects against ammonia and trimethylamine. Silver-loaded zeolite does not impede the deodorizing effects of catechin-based and tannin-based deodorizers against ammonia and trimethylamine, and shows rapid deodorizing effects against hydrogen sulfide and methanethiol. Therefore, according to the present invention, it is possible to provide toilet paper rolls, etc., that exhibit excellent deodorizing effects against methanethiol, trimethylamine, hydrogen sulfide, and ammonia, which are the main components of urine and fecal odor, and are also fragrance-free.

[0089] Label Explanation

[0090] X2··· Paper winding machine device; X3··· Semi-finished product storage container; X4··· Semi-finished product cutting equipment; 10··· Toilet paper roll; 10R··· Semi-finished product; 11L··· Long paper tube; 11··· Paper tube; 12··· Paper tube base paper; 12A··· Paper tube base paper blank; 13··· Gluing roller; 14··· Core winding machine; 15··· Shaft; 16··· Slitting machine; S1, S2··· Toilet paper base paper; S3··· Toilet paper; 51··· Overlapping section; 54··· Contact embossing device; 70··· Perforation line forming device; 75··· Winding device; 76··· Semi-finished product cutting tool; (A)··· Paper tube manufacturing process; (B)··· Semi-finished product manufacturing process; (C)… Cutting process; 30… Glue; 40… Deodorant solution.

Claims

1. A method for manufacturing toilet paper rolls, comprising manufacturing toilet paper rolls by winding a strip of toilet paper onto a paper tube, characterized in that, The manufacturing method of the toilet paper roll includes the following steps: The solution containing diethylene glycol monoethyl ether and isopropanol is mixed with catechin-based deodorant, tannin-based deodorant and silver-loaded zeolite. The mixed drug solution was prepared at 3.0 g / m³. 2 ~6.0g / m 2 Coated on paper with a thickness of 100μm to 400μm and a basis weight of 130 g / m² 2 ~200g / m 2 The paper tube base paper, thereby imparting catechin-based deodorants, tannin-based deodorants, and silver-loaded zeolite to the paper tube base paper; and Using this paper tube base paper, roll toilet paper is manufactured in such a way that the surface to which the aforementioned treatment is applied becomes the inner surface of the paper tube.

2. The method for manufacturing toilet paper rolls according to claim 1, wherein, Acrylic resin is not imparted to the portions containing the catechin-based deodorant, tannin-based deodorant, and silver-loaded zeolite.

3. The method for manufacturing toilet paper rolls according to claim 1 or 2, wherein, The catechin-based deodorant, tannin-based deodorant, and silver-loaded zeolite are attached to the fibers constituting the inner surface of the paper tube or kept in the gaps between the fibers.

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