Toilet rolls and paper tubes

Abstract

This invention provides toilet rolls and paper tubes that effectively eliminate multiple types of odors by using deodorizers with different deodorizing properties in combination. [Solution] The above problem is solved by a toilet roll 10 in which a strip of toilet paper 12 is wound around a paper tube 11, wherein the inner circumferential surface 11B of the paper tube 11 has a chemical deodorizing region 20 to which a chemical deodorizer is applied for chemical deodorizing, and an adsorption deodorizing region 23 to which an adsorption type deodorizer is applied for adsorption deodorizing.

Description

Technical Field

[0001] The present invention relates to a toilet roll in which a strip of toilet paper is wound around a paper tube and the paper tube.

Background Art

[0002] Conventionally, technologies for deodorizing malodorous components in a toilet space have been proposed. For example, there can be mentioned a technology of applying a deodorant to the inner surface of the paper tube of a toilet roll to reduce malodorous components (Patent Documents 1 and 3), a technology of including a deodorant in the tail seal glue for adhering the end of the toilet paper (Patent Document 2), and the like.

[0003] The malodorous components in the toilet space consist of multiple odors, and typical ones are urine odor and fecal odor. The main causative substance of urine odor is ammonia, and the main causative substance of fecal odor is hydrogen sulfide. Since these causative substances have different properties, deodorants that exhibit a deodorizing effect for each causative substance are selected.

[0004] Patent Document 3 proposes a technology of imparting to a toilet roll a polyphenol-based deodorant in which activated carbon having a deodorizing effect by an adsorption action and an organic acid and an organic acid salt having a high deodorizing function for ammonia are blended.

[0005] On the other hand, Patent Document 4 is a technology of imparting a deodorizing effect for fecal odor to a polyphenol-based deodorant, and proposes a technology related to a deodorant aimed at deodorizing hydrogen sulfide and the like derived from feces.

Prior Art Documents

Patent Documents

[0006] D

Patent Document 1

Patent Document 2

Patent Document 3

[0007] However, while conventional deodorization technologies can address multiple odors, they primarily focus on specific odors while also being able to handle others. There is a need for technologies that can more effectively eliminate the complex odors found in toilet spaces.

[0008] Therefore, the main objective of the present invention is to provide toilet rolls and paper tubes that have improved deodorizing effects against multiple odors. [Means for solving the problem]

[0009] The embodiments of the present invention that solve the above problems and their effects are as follows. [First aspect] A toilet roll in which a strip of toilet paper is wound around a paper tube, The inner surface of the paper tube has a chemical deodorizing region to which a chemical deodorizing agent is applied for chemically deodorizing odors, and an adsorption deodorizing region to which an adsorption type deodorizing agent is applied for deodorizing odors by adsorbing them. A toilet roll characterized by the following features.

[0010] The toilet roll of the first embodiment uses both an adsorbent deodorant and a chemical deodorant, and because it deodorizes using two deodorizing methods, it has a superior deodorizing effect compared to toilet rolls that are treated with a deodorant that deodorizes using only one method.

[0011] [Second aspect] The first embodiment of the toilet roll comprises a first deodorizing region to which a first deodorizing agent is applied for chemically deodorizing a first odor, a second deodorizing region to which a second deodorizing agent is applied for chemically deodorizing a second odor different from the first odor, and regions in which the first deodorizing region and the second deodorizing region do not overlap with each other.

[0012] The toilet roll of the second embodiment uses a combination of a first deodorant and a second deodorant as chemical deodorants. Because it uses two chemical deodorants to deodorize, it has a superior deodorizing effect compared to toilet rolls that use only one chemical deodorant. Furthermore, since the first and second deodorizing regions do not overlap, the deodorizing effect of each deodorant is less likely to be suppressed.

[0013] Conventional toilet rolls treated with deodorizers were intended to eliminate specific odors from among unpleasant smells such as urine and feces. This is because, for example, there are several substances that cause fecal odor, and if the odor from one of these substances is eliminated, users will be less likely to notice the fecal odor. However, other substances that cause fecal odor that have not been eliminated still remain in the toilet space. On the other hand, since this embodiment uses multiple deodorizers in combination, it can eliminate multiple odors, for example, so users will be less likely to notice unpleasant odors.

[0014] [Third aspect] A second embodiment of toilet roll, wherein the first odor is derived from an alkaline substance, and the second odor is derived from an acidic substance.

[0015] This type of toilet roll can effectively deodorize ammonia and trimethylamine, which are examples of alkaline odors in the toilet space, and hydrogen sulfide and methyl mercaptan, which are examples of acidic odors in the toilet space.

[0016] [Fourth aspect] A toilet roll of a second embodiment, wherein the first deodorant and the second deodorant, upon contact with each other, cause the deodorizing function of at least one of the deodorants to be reduced or lost.

[0017] Even with the toilet roll of this form, there are areas that do not overlap with each other, so the deodorizing function is fully exerted in those areas.

[0018] [Fifth aspect] A third or fourth embodiment of a toilet roll, wherein the first deodorant is an acidic deodorant and the second deodorant is an alkaline deodorant.

[0019] This type of toilet roll has the effect of selectively deodorizing odors that react chemically with acidic deodorizers and those that react chemically with alkaline deodorizers. In particular, urine odor and fecal odor are the main malodorous components in toilet spaces, and since urine odor and fecal odor are mainly alkaline and acidic odors, this type of toilet roll can effectively deodorize urine odor and fecal odor.

[0020] [Sixth aspect] A toilet roll according to the first embodiment, wherein the chemical deodorizing region and the adsorption deodorizing region have areas that do not overlap with each other, and the ratio of the area of ​​the areas where the chemical deodorizing region and the adsorption deodorizing region do not overlap with each other to the area of ​​the inner circumferential surface of the paper tube is 80% or more.

[0021] Since the adsorption deodorizing area and the chemical collection area have areas that do not overlap with each other, the deodorizing effect of one deodorizer is less likely to be suppressed by the deodorizing effect of the other deodorizer. In particular, with this embodiment of toilet roll, there are sufficient areas that do not overlap, so effective deodorization is achieved.

[0022] [Seventh aspect] A second embodiment of a toilet roll, wherein the proportion of the area of ​​the chemical deodorizing region in which the first deodorizing region and the second deodorizing region do not overlap is 80% or more.

[0023] With this type of toilet roll, there is a sufficient area where the first deodorizing area and the second deodorizing area do not overlap, thus enabling effective deodorization.

[0024] [Eighth aspect] A toilet roll according to a first embodiment, wherein the percentage of the area of ​​the part of the chemical deodorizing region that does not overlap with the adsorption-type deodorizing region relative to the area of ​​the inner circumferential surface of the paper tube is 50-80%, and the percentage of the area of ​​the part of the adsorption-type deodorizing region that does not overlap with the chemical deodorizing region is 20-50%.

[0025] The deodorizing effect of a deodorant is more effective when the area to be deodorized is wide, as the odor can be chemically reacted and eliminated throughout that entire area. This configuration is preferable because it allows each deodorant to exert a sufficient deodorizing effect.

[0026] [The ninth aspect] A paper tube that forms the core of a toilet roll, which is made by winding a strip of toilet paper around it. The inner surface of the paper tube has a chemical deodorizing region to which a chemical deodorizing agent is applied to chemically deodorize odors, and an adsorption deodorizing region to which an adsorption type deodorizing agent is applied to which odors are adsorbed and deodorized. A paper tube characterized in that the chemical deodorizing region and the adsorption deodorizing region have regions that do not overlap with each other.

[0027] The paper tube in this embodiment provides the same effect as the paper tube of the toilet roll in the first embodiment.

[0028] [The tenth aspect] The paper tube of the ninth embodiment, wherein the chemical deodorizing region comprises a first deodorizing region to which a first deodorizing agent is applied for chemically deodorizing a first odor, a second deodorizing region to which a second deodorizing agent is applied for chemically deodorizing a second odor different from the first odor, and regions in which the first deodorizing region and the second deodorizing region do not overlap with each other.

[0029] The paper tube in this embodiment has the same effect as the paper tube of the toilet roll in the second embodiment. [Effects of the Invention]

[0030] As described above, the present invention provides toilet rolls and paper tubes that effectively deodorize multiple types of odors. [Brief explanation of the drawing]

[0031] [Figure 1] This is a perspective view of a toilet roll according to an embodiment of the present invention. [Figure 2] This is a cross-sectional view of a paper tube according to an embodiment of the present invention. [Figure 3] This is a diagram of a paper tube according to an embodiment of the present invention. [Figure 4] This is an unfolded view of the inner circumferential surface of a paper tube according to an embodiment of the present invention. [Figure 5] This is an unfolded view of the inner circumferential surface of another paper tube according to an embodiment of the present invention. [Figure 6] This is an unfolded view of the inner circumferential surface of another paper tube according to an embodiment of the present invention. [Figure 7] This is an unfolded view of the inner circumferential surface of yet another paper tube according to an embodiment of the present invention. [Figure 8] This figure shows an example of applying a deodorant to a long paper tube base paper according to an embodiment of the present invention. [Figure 9] This figure shows another example of applying a deodorant to a long paper tube base paper according to an embodiment of the present invention. [Figure 10] This figure shows another example of applying a deodorant to a long paper tube base paper according to an embodiment of the present invention. [Figure 11] This figure shows yet another example of applying a deodorant to a long paper tube base paper according to an embodiment of the present invention. [Figure 12] This figure shows an overview of a method for manufacturing toilet roll according to an embodiment of the present invention. [Figure 13] This is a cross-sectional view showing the relationship between a long paper tube and a mandrel shaft according to an embodiment of the present invention. [Figure 14] This figure illustrates an example of the manufacturing process for long paper tube base paper according to an embodiment of the present invention. [Figure 15] This figure illustrates another example of the manufacturing process for long paper tube base paper according to an embodiment of the present invention. [Figure 16] This figure illustrates an embodiment of the present invention in which a deodorant is applied to a wide paper tube base paper. [Figure 17]This figure shows another embodiment of the present invention in which a deodorant is applied to the wide paper tube base paper according to the present invention. [Figure 18] This figure shows another embodiment of the present invention in which a deodorant is applied to the wide paper tube base paper according to the present invention. [Figure 19] This figure shows yet another embodiment in which a deodorant is applied to the wide paper tube base paper according to an embodiment of the present invention. [Modes for carrying out the invention]

[0032] Embodiments of the present invention will be described below with reference to Figures 1 to 19. However, the present invention is not limited to these embodiments. (Toilet roll) As shown in Figure 1, the toilet roll 10 according to the present invention consists of a paper tube 11 around which a strip of household tissue paper 12 is wound.

[0033] The toilet roll 10 according to this embodiment is characterized in that, as shown in Figure 2 which shows a cross-sectional view of the paper tube 11, the inner circumferential surface 11B of the paper tube 11 is provided with a chemical deodorizing region 20 to which a chemical deodorizing agent is applied for chemical deodorization, and an adsorption deodorizing region 23 to which an adsorption type deodorizing agent is applied for deodorization by adsorption.

[0034] The chemical deodorizing region 20 may include two types of deodorizing regions that target different odors, as shown in the unfolded view of the inner surface of the paper tube in Figure 5: a first deodorizing region 21 to which a first deodorizing agent is applied to chemically deodorize a first odor, which is one of several odors in the toilet space; and a second deodorizing region 22 to which a second deodorizing agent is applied to chemically deodorize a second odor, which is different from the first odor. In a configuration in which the first deodorizing region 21 and the second deodorizing region 22 are provided, at least the first deodorizing region 21 and the second deodorizing region 22 have areas that do not overlap with each other. That is, at least the first deodorizing region 21 has an area that is separate from the second deodorizing region 22. do.

[0035] The toilet roll according to this embodiment has a chemical deodorizing region 20 that is treated with a chemical deodorizer that chemically deodorizes, and an adsorption deodorizing region 23 that is treated with an adsorption deodorizer that deodorizes by adsorption, and regions with deodorizers having different deodorizing mechanisms are provided on the paper tube 11. Chemical deodorizers deodorize by chemically reacting with odor-causing substances, and although the components to be deodorized are limited to substances that undergo a chemical reaction, they generally exhibit a high deodorizing effect against specific components targeted for deodorization. In contrast, adsorption deodorizers can deodorize a wide range of components, including those targeted by chemical deodorizers, as long as they are adsorbable components, including components that do not chemically react with chemical deodorizers. Furthermore, adsorption deodorizers tend to have a longer-lasting deodorizing effect than chemical deodorizers.

[0036] Therefore, the toilet roll 10 according to this embodiment can correspond to the causative substances that the chemical deodorant targets for deodorization and the causative substances that the adsorbent deodorant can deodorize, among the multiple causative substances emitted from the odor source in the toilet space, making it possible to reduce the malodor originating from the multiple causative substances emitted from the odor source in the toilet space.

[0037] In particular, if the chemical deodorizing region 20 includes a first deodorizing region 21 to which a first deodorizing agent is applied to chemically deodorize a first odor, and a second deodorizing region 22 to which a second deodorizing agent is applied to chemically deodorize a second odor that is different from the first odor, then chemical deodorizing agents targeting different odors will be used in combination, making it possible to deodorize odors originating from multiple causative substances with different chemical properties. This makes it possible to more effectively reduce malodors originating from multiple causative substances emitted from odor sources in the toilet space.

[0038] While the size of toilet roll 10 is not necessarily limited, it is desirable that the width L1 is 100-120 mm, the diameter L2 is 100-120 mm, the roll length (total length of toilet paper) is 18-70 m, and the inner diameter L3 of the paper core is 35-50 mm. With these dimensions, a standard toilet roll holder can be used, and the length of the toilet paper is sufficient.

[0039] Furthermore, while the toilet paper 12 in this embodiment is a household tissue paper having a crepe-like surface with fine irregularities, its specific composition and structure are not limited. The toilet paper 12 is preferably 1-ply to 3-ply. The paper thickness is preferably 100-350 μm. Also, the basis weight per ply is preferably 11.0-25.0 g / m². 2 This is desirable. Within this range, softness and water absorption during use can be ensured.

[0040] The basis weight is determined according to the basis weight measurement method of JIS P 8124 (1998), and the paper thickness is the average of five measurements taken using a dial thickness gauge (thickness measuring instrument) "PEACOCK G type" (manufactured by Ozaki Seisakusho) under the conditions of JIS P 8111 (1998), after sufficient humidity control. Measurements are taken as follows: 1-ply for 1-ply paper, 2-ply for 2-ply paper, and 3-ply for 3-ply paper.

[0041] The paper tube 11 should preferably be a layered spiral paper tube in which multiple sheets of paper tube base paper are wound in a spiral shape. To obtain sufficient strength, the basis weight per sheet of paper tube base paper should be 100 to 220 g / m². 2 A paper thickness of 100-500 μm is preferable.

[0042] (Deodorizer) Next, the chemical deodorant according to this embodiment will be described. The deodorizing mechanism of the chemical deodorant is that when malodorous components come into contact with the deodorant in the chemical deodorizing area, a chemical reaction occurs and they are transformed into odorless components, thereby deodorizing them. Furthermore, if the deodorant is one that volatilizes from the chemical deodorizing area, when malodorous components come into contact with the volatilized deodorant, a chemical reaction occurs and they are transformed into odorless components, thereby deodorizing them. The chemical deodorant can be applied to the paper tube 11 in liquid, gel, or other forms. The amount of chemical deodorant applied to the paper tube can be appropriately adjusted according to the deodorizing effect and is not necessarily limited.

[0043] A binder may be used when applying a chemical deodorant to the inner surface of a paper tube. The binder is not particularly limited as long as it does not hinder the effect of the deodorant. For example, if the deodorant chemically neutralizes, decomposes, or captures malodorous components in the air, it is desirable to use a binder that does not excessively hinder the volatilization of the deodorant. Examples of such binders include starch, carboxymethylcellulose, and polyvinyl alcohol.

[0044] Furthermore, a chemical deodorant may include a first deodorant that chemically deodorizes a primary odor and a second deodorant that chemically deodorizes a secondary odor distinct from the first odor. Of course, a chemical deodorant may also deodorize only one odor; for example, it may be either a first deodorant that chemically deodorizes the primary odor or a second deodorant that chemically deodorizes the secondary odor. Here, the primary and secondary odors are different odors, and distinguishing between them may be differences in pH or acidity / alkali. For example, among the malodorous odors emitted from food waste, which is a source of malodorous odors, the primary odor can be classified as an odor emitted from substances whose odor-causing substances have a pH of 7 or higher, while the secondary odor can be classified as an odor emitted from substances whose odor-causing substances have a pH of less than 7. Additionally, the primary odor can be classified as an odor emitted from alkaline substances, while the secondary odor can be classified as an odor emitted from acidic substances. Here, an alkaline substance can be defined as, for example, a substance with a pH greater than 7, and an acidic substance can be defined as, for example, a substance with a pH less than 7.

[0045] Odors in toilet spaces include urine odor, fecal odor, moldy odor, sewage odor, and vomit odor. In particular, ammonia derived from urine is one of the causative substances for the typical urine odor. Similarly, hydrogen sulfide, methyl mercaptan, acetic acid, valeric acid, and trimethylamine, all derived from feces, are the causative substances for the typical fecal odor. Of these, hydrogen sulfide, methyl mercaptan, acetic acid, and valeric acid are acidic, while ammonia and trimethylamine are alkaline. Therefore, for example, the first odor can be defined as an odor derived from alkaline substances such as amines, mainly urine odor, and the second odor can be defined as an odor derived from acidic substances such as sulfides, mainly fecal odor. Note that the terms "first" and "second" in the first and second odors in this invention are used for convenience to distinguish that they are different, and do not represent the speed or order of deodorization. Therefore, of course, the second odor can be defined as an odor derived from alkaline substances such as amines, and the first odor can be defined as an odor derived from acidic substances such as sulfides.

[0046] If the primary odor is primarily derived from alkaline substances such as amines, which are urine odors, and the secondary odor is primarily derived from acidic substances such as sulfides, which are fecal odors, then it is desirable to use an acidic deodorant as the primary deodorant and an alkaline deodorant as the secondary deodorant. Through a neutralization reaction, it becomes possible to effectively reduce urine and fecal odors in the toilet space. In this case, it is desirable to use a strongly acidic deodorant as the primary deodorant and a weakly alkaline deodorant as the secondary deodorant. This makes it possible to effectively reduce amines, methyl mercaptan, and hydrogen sulfide, which are the main causative substances of malodors in the toilet space.

[0047] Examples of acidic deodorants include those containing any one of the following: polyphenols, polyphenol derivatives, and polyphenol analogs (hereinafter also referred to as "polyphenols, etc."), organic acids, and organic acid salts. Polyphenols, etc. are extracted from plants and processed plant products, and due to the reactivity of phenolic hydroxyl groups, they have a deodorizing function against ammonia, which is at least one of the main malodorous components present in toilet spaces.

[0048] Specific examples of polyphenols include tannins, catechins, rutin, anthocyanins, ellagic acid, coumarins, flavones, and their derivatives or precursors. These exhibit a high deodorizing effect against ammonia, the cause of malodorous toilet odors, particularly urine odor. Among the above examples, tannins and their derivatives are preferred. Tannins and tannin derivatives have a large molecular weight and many phenolic hydroxyl groups, thus exhibiting excellent deodorizing function. Tannins can be condensed tannins, hydrolyzed tannins, etc., and any of these is acceptable. In particular, among tannins, persimmon tannins and persimmon tannin derivatives derived from persimmons have a very large molecular weight and are extremely effective in deodorizing, so it is preferable to include at least one of them as an acidic deodorant component according to the present invention. When persimmon tannin is included, tea catechins may also be included.

[0049] Specific examples of organic acids and organic acid salts are preferably those that are highly safe for the human body. Examples include citric acid, lactic acid, tartaric acid, malic acid, fumaric acid, succinic acid, glutaric acid, amino acids, adipic acid, ascorbic acid, or their inorganic or organic salts. Examples of inorganic bases that form salts include hydroxides, oxides, carbonates, and bicarbonates of alkali metals or alkaline earth metals such as sodium, potassium, lithium, calcium, and magnesium. Examples of organic bases include nitrogen-containing bases, such as primary, secondary, or tertiary amines, and compounds having groups such as imino groups, guanidino groups, imidazolino groups, imidazolyl groups, and pyridyl groups.

[0050] The amount of acidic deodorant applied to the paper tube is not necessarily limited, but the content on the inner surface 11B of the paper tube 11 should be 1 to 15 g / m². 2 , more preferably 3-8 g / m 2This range is particularly suitable when using the specific examples of acidic deodorants mentioned above. If the acidic deodorant content is within the above range, it can effectively deodorize odors emitted from alkaline substances such as amines in the toilet space. Furthermore, if the acidic deodorant content is at the upper limit of the above range, the deodorizing effect is extremely excellent, and even if it exceeds the upper limit, the effect will plateau.

[0051] Examples of alkaline deodorants include any alkaline component such as sodium hydroxide, sodium hypochlorite, and baking soda (sodium bicarbonate). Examples of inorganic bases include hydroxides, oxides, carbonates, and bicarbonates of alkali metals or alkaline earth metals. Examples of organic bases include nitrogen-containing bases, such as primary, secondary, or tertiary amines, and compounds containing groups such as imino, guanidino, imidazolino, imidazolyl, and pyridyl groups. In particular, an alkaline deodorant with a pH of 7.0 to 10 is desirable, as it has minimal corrosive effects on production equipment.

[0052] The amount of alkaline deodorant applied to the paper tube is not necessarily limited, but the content on the inner surface 11B of the paper tube 11 should be 1 to 15 g / m². 2 , more preferably 3-8 g / m 2 This range is particularly suitable when using the specific examples of alkaline deodorants mentioned above. If the alkaline deodorant content is within the above range, the odor of feces emitted from acidic substances derived from feces will be effectively deodorized in the space near the toilet roll. Furthermore, if the alkaline deodorant content is at the upper limit of the above range, the deodorizing effect will be extremely excellent, and even if the upper limit is exceeded, the effect will plateau.

[0053] Furthermore, when adding acidic and alkaline deodorizers, the ratio of their contents is not necessarily limited, but is preferably 4:1 to 1:2, and more preferably 3:1 to 1:1. Generally, in a flush toilet, feces are removed from the toilet space by flushing, but some urine droplets remain attached to un-flushed parts of the toilet bowl even after flushing, and this can cause urine odor. In other words, urine odor tends to linger in the toilet space longer than fecal odor. Therefore, if the ratio of acidic and alkaline deodorizers is within the above range, it is possible to sufficiently deodorize persistent urine odor even if the period from when the toilet roll is installed until it is used up is relatively long.

[0054] Here, the first and second deodorants may be characterized in that, upon contact with each other, the deodorizing function of at least one of the deodorants is reduced or lost. There are several odors in a toilet space, but for example, as described above, if the substance causing one odor is alkaline and the substance causing the other odor is acidic, then a deodorant capable of deodorizing each substance will be selected. In this case, the deodorizing function may be reduced or lost due to contact between the selected deodorants. For example, if the first deodorant is an acidic deodorant and the second deodorant is an alkaline deodorant, as described above, they may neutralize each other upon contact, resulting in a reduction or loss of their deodorizing function.

[0055] In the toilet roll 10 according to this embodiment, a first deodorizing region 21 is provided by the application of a first deodorizer, and a second deodorizing region 22 is provided by the application of a second deodorizer. By ensuring that these first and second deodorizing regions 21 and 22 do not overlap, the deodorizing functions of both the first and second deodorizers can be maintained even if the deodorizing function of at least one of the deodorizers is reduced or lost due to contact between them.

[0056] Next, the adsorption-type deodorant according to this embodiment will be described. The deodorizing mechanism of the adsorption-type deodorant is that when malodorous components come into contact with the deodorant in the adsorption-type deodorizing area, the malodorous components are fixed to the deodorant by an adsorption reaction, thereby deodorizing the agent. The adsorption action in the adsorption-type deodorant is a chemical and physical action, for example, by van der Waals forces, which adsorb malodorous components and odors onto the surface of the deodorant or into the pores present in the porous deodorant.

[0057] The malodorous components that adsorbent deodorants can eliminate are not limited to those eliminated by chemical deodorants, but may include the first odor, the second odor, or both, among the malodorous components in a kitchen space. Furthermore, odors other than the first and second odors may also be eliminated. Garbage odors include various types of malodorous odors, and in addition to the amines and sulfides mentioned above, there are solvent odors from alcohol and fermentation odors from organic acids, and adsorbent deodorants can eliminate such odors.

[0058] Specific examples of adsorbent deodorants include silicon dioxide, aluminum oxide, silica-alumina, zinc oxide, zeolite, activated carbon, titanium dioxide, aluminum dioxide, aluminum hydroxide, betaine compounds, zirconium compounds, copper compounds, and ion-exchange resins. These deodorants can provide sufficient deodorizing effects. Preferably, they contain silica-alumina and amphoteric oxides among the above oxides. Adsorbent deodorants may be in powder, granular, or other solid form. In the case of solids, a binder can be mixed in and applied to the paper tube 11 so that it does not easily fall off the paper tube 11 when the toilet roll 10 is used. The binder is not particularly limited as long as it does not hinder the effect of the deodorant. For example, a binder that does not excessively block the opportunity for the adsorbent deodorant to come into contact with the outside air is used. Examples of such binders include OP varnish, starch, carboxymethylcellulose, and polyvinyl alcohol.

[0059] In the adsorbent deodorant of this embodiment, the particularly desirable average particle size of the powder is 20 μm or less. Preferably, it is 1 to 10 μm, and more preferably, 3 to 7 μm. The average particle size here is the value measured by the microtrac method. With this average particle size, the specific surface area per unit volume of the adsorbent deodorant is sufficiently large, the breakthrough time is long, and a large amount of odor can be deodorized.

[0060] The amount of adsorbent deodorant applied to the paper tube 11 according to this embodiment is not necessarily limited, but the content on the inner surface 11B of the paper tube 11 should be 1 to 15 g / m². 2 , more preferably 3-8 g / m 2 Therefore, if the content of the adsorbent deodorant is within the above range, the deodorizing effect with the chemical deodorant, especially acidic and alkaline deodorants, is exhibited synergistically, which is preferable.

[0061] The ratio of chemical deodorant to adsorbent deodorant content in the paper tube 11 according to this embodiment is not particularly limited, but is preferably 4:1 to 1:3, more preferably 3:1 to 1:2. Chemical deodorants deodorize faster than adsorbent deodorants. This is due to the difference in their deodorizing mechanisms. Therefore, the above range of content ratios allows for a balanced effect between the deodorizing action of the chemical deodorant and the deodorizing action of the adsorbent deodorant, resulting in smooth deodorization. Furthermore, adsorbent deodorants are often more expensive than chemical deodorants, particularly acidic and alkaline deodorants that achieve deodorizing effects through neutralization reactions. Since toilet rolls, by their nature, require a low price, it is desirable to consider the cost of each deodorant when determining the content and ratio of adsorbent deodorant and chemical deodorant.

[0062] (Deodorizing area) Next, the deodorizing areas in the toilet roll 10 of this embodiment will be described. The chemical deodorizing area 20 in this embodiment is an area to which a chemical deodorant that chemically deodorizes odors is applied. This chemical deodorizing area may have two or more areas, such as a first deodorizing area and a second deodorizing area. The first deodorizing area 21 is an area to which the first deodorant is applied, and the second deodorizing area 22 is an area to which the second deodorant is applied. In addition, the adsorption deodorizing area in this embodiment is an area to which an adsorption-type deodorant is applied. In the toilet roll of this embodiment, these deodorizing areas are provided on the inner circumferential surface of the paper tube. Note that the paper tube according to this embodiment may also have a non-deodorizing area to which no deodorant is applied.

[0063] The thickness of each region in the chemical deodorizing region 20 (first deodorizing region 21, second deodorizing region 22) and the adsorption deodorizing region is not necessarily limited. The deodorizing region may be formed by providing the deodorizer in layers on the inner circumferential surface of the paper tube, or the deodorizer may be impregnated into the paper tube base paper. A portion of the deodorizer may be formed in layers on the inner circumferential surface of the paper tube, while the remainder is impregnated into the paper tube base paper. If the deodorizer is formed in layers, deodorization by the deodorizer proceeds relatively quickly, and a deodorizing effect can be obtained even for strong odors. On the other hand, if the deodorizer is impregnated into the paper tube base paper, deodorization by the deodorizer proceeds relatively gently, and a long-term deodorizing effect can be obtained. When the deodorizer is applied to the inner circumferential surface of the paper tube and formed in layers, the thickness of each region is not necessarily limited, but is preferably 0.01 to 2.0 μm, more preferably 0.7 to 1.7 μm. Within the above thickness range, the deodorizing effect can be sufficiently sustained.

[0064] In the toilet roll 10 according to this embodiment, since the inner surface 11B of the paper tube 11 according to this embodiment has a limited area, the wider the chemical deodorizing area 20 and the adsorption deodorizing area 23, and the narrower the non-deodorizing area, the wider the contact area between the deodorant and the malodor and the area where the deodorant volatilizes, the easier it is to enhance the deodorizing effect. In particular, for an area of ​​about the size of the inner surface 11A of the paper tube 11, the area of ​​the part where the deodorant is exposed tends to have a greater influence than the concentration of the deodorant, due to the opportunity for contact between the malodor and the deodorant. Therefore, it is preferable that the proportion of the area of ​​the inner surface 11B of the paper tube 11 according to this embodiment occupied by the part where at least one of the chemical deodorizing area 20 and the adsorption deodorizing area 23 exists is 80% or more, more preferably 90% or more, and particularly preferably 100%.

[0065] Furthermore, while the chemical deodorizing region 20 and the adsorption deodorizing region 23 may overlap, it is preferable to have a large area where they do not overlap in order for the chemical deodorizer and the adsorption deodorizer to fully exert their deodorizing function. For manufacturing purposes, the chemical deodorizing region 20 and the adsorption deodorizing region 23 may partially overlap, but it is desirable to avoid overlapping them as much as possible, because overlapping of the chemical deodorizing region 20 on the adsorption deodorizing region 23 may reduce the surface area capable of adsorbing odors and potentially decrease the deodorizing function. Therefore, the ratio of the area of ​​the overlapping region between the chemical deodorizing region 20 and the adsorption deodorizing region 23 to the area of ​​the inner circumferential surface 11B of the paper tube 11 is preferably 50% or less, more preferably 25% or less, and particularly preferably 0%. In other words, it is desirable that the inner circumferential surface 11B of the paper tube consists only of the chemical deodorizing region 20 and the adsorption deodorizing region 23, with no overlapping areas.

[0066] Furthermore, it is desirable that the percentage of the area of ​​the part of the chemical deodorizing region 20 that does not overlap with the adsorption-type deodorizing region 23 relative to the area of ​​the inner circumferential surface 11B of the paper tube 11 be 50-80%. Also, it is desirable that the percentage of the area of ​​the adsorption-type deodorizing region 23 that does not overlap with the chemical deodorizing region 20 relative to the area of ​​the inner circumferential surface 11B of the paper tube 11 be 20-50%. As described above, the deodorizing speed of chemical deodorizers and adsorption-type deodorizers differs due to the difference in deodorizing mechanisms. In addition, the target malodorous components are different. Within the above range, the deodorizing action of the chemical deodorizer and the deodorizing action of the adsorption-type deodorizer work in a balanced manner, resulting in smooth deodorization and superior deodorizing effect.

[0067] Furthermore, in the toilet roll 10 according to this embodiment, if the chemical deodorizing region 20 is provided with a first deodorizing region 21 provided with a first deodorizing agent and a second deodorizing region 22 provided with a second deodorizing agent, the inner circumferential surface 11B of the paper tube 11 has a limited area. Therefore, the wider the first deodorizing region 21 and the second deodorizing region 22, the wider the contact area between the deodorizing agent and the malodorous odor and the wider the area where the deodorizing agent volatilizes, which enhances the deodorizing effect. Accordingly, the proportion of the area of ​​the chemical deodorizing region where the first deodorizing region and the second deodorizing region do not overlap is preferably 80% or more, more preferably 90% or more, and particularly preferably 100%.

[0068] Furthermore, the larger the area where the first deodorizing region 21 and the second deodorizing region 22 do not overlap, the less likely the deodorizing effect of one deodorizer is to be suppressed by the other. In particular, since acidic deodorizers and alkaline deodorizers may neutralize each other and become inactive, it is desirable that the area of ​​mutual overlap be small. Therefore, the ratio of the area of ​​the overlapping region between the first deodorizing region 21 and the second deodorizing region 22 to the area of ​​the chemical deodorizing region is preferably 10% or less, more preferably 5% or less, and particularly preferably 0%. In other words, it is desirable that the entire chemical deodorizing region consists only of the first deodorizing region 21 and the second deodorizing region 22, with no overlapping area.

[0069] Furthermore, when the first deodorant is an acidic deodorant and the second deodorant is an alkaline deodorant, it is desirable that the percentage of the area of ​​the part of the first deodorant region 21 that does not overlap with the second deodorant region 22 in relation to the area of ​​the chemical deodorant region be 20-66%. Also, it is desirable that the percentage of the area of ​​the part of the second deodorant region 22 that does not overlap with the first deodorant region 21 in relation to the area of ​​the chemical deodorant region be 33-80%. This results in superior deodorizing effect due to the ease of neutralization reactions with ammonia, one of the causes of urine odor, and hydrogen sulfide, one of the causes of fecal odor. In particular, it is desirable that the percentage of the area of ​​the part of the first deodorant region 21 that does not overlap with the second deodorant region 22 be 20-50%, and the percentage of the area of ​​the part of the second deodorant region 22 that does not overlap with the first deodorant region 21 in relation to the area of ​​the inner surface 11A of the paper tube 11 be 50-80%, so that the second deodorant region is larger than the area of ​​the first deodorant region.

[0070] Next, the specific arrangement of the deodorizing areas will be explained with particular reference to Figures 3 to 9. Figure 3 is a spiral paper tube. Figures 4 to 7 are views of the inner circumferential surface of the paper tube 11 shown in Figure 3, after it has been cut open in the axial direction C. The arrangement of the chemical deodorizing area 20 and the adsorption deodorizing area 23 on the inner circumferential surface 11B of the paper tube 11 is not particularly limited, but as shown in Figure 4, it is desirable that the chemical deodorizing area 20 and the adsorption deodorizing area 23 extend in the MD direction of the paper tube base paper 32 constituting the inner circumferential surface 11B, and that the chemical deodorizing area 20 and the adsorption deodorizing area 23 are arranged side by side in the CD direction of the paper tube base paper, preferably parallel to each other. To achieve this arrangement, for example, as shown in Figure 8, a spiral paper tube can be formed using a paper tube base 32 that constitutes the inner circumferential surface 11B, in which the chemical deodorizing region 20 and the adsorption deodorizing region 23 extend in the MD direction, and the chemical deodorizing region 20 and the adsorption deodorizing region 23 are aligned in the CD direction, preferably parallel to each other. In the arrangement shown in Figure 4, the ratio of the amount of chemical deodorizer to the adsorption deodorizer applied, and the area ratio of the chemical deodorizing region 20 to the adsorption deodorizing region 23 can be adjusted by adjusting the width of the chemical deodorizing region 20 and the adsorption deodorizing region 23 in the CD direction.

[0071] Furthermore, when a first deodorizer and a second deodorizer are used to form a chemical deodorizing region 20, with a first deodorizing region 21 and a second deodorizing region 22, it is desirable that, as shown in Figure 5, the paper tube base 32 constituting the inner circumferential surface 11B is arranged such that the first deodorizing region 21, the second deodorizing region 22, and the adsorption deodorizing region 23 each extend in the MD direction, and that the first deodorizing region 21, the second deodorizing region 22, and the adsorption deodorizing region 23 are aligned in the CD direction, preferably parallel. To achieve this arrangement, for example, as shown in Figure 9, the spiral paper tube can be formed using paper tube base 32 constituting the inner circumferential surface 11B, where the first deodorizing region 21, the second deodorizing region 22, and the adsorption deodorizing region 23 each extend in the MD direction, and that the first deodorizing region 21, the second deodorizing region 22, and the adsorption deodorizing region 23 are aligned in the CD direction, preferably parallel. The arrangement shown in Figure 5 allows for adjustment of the ratio of the amounts of the first deodorant, the second deodorant, and the adsorption deodorant applied, as well as the relative area ratios of the first deodorant, the second deodorant, and the adsorption deodorant, by adjusting the widths of the first deodorant region 21, the second deodorant region 22, and the adsorption deodorant region 23 in the CD direction.

[0072] Furthermore, as an arrangement of the chemical deodorizing regions 20 and adsorption deodorizing regions 23, as shown in Figure 6, it is also desirable to have an arrangement in which multiple chemical deodorizing regions 20 are intermittently provided at intervals in the MD direction on the paper tube base paper 32 constituting the inner circumferential surface 11B, and adsorption deodorizing regions 23 are provided to fill the gaps in the areas where the chemical deodorizing regions 20 are not provided. To achieve this arrangement, for example, as shown in Figure 10, the paper tube base paper 32 constituting the inner circumferential surface 11B can be made in which multiple chemical deodorizing regions 20 are intermittently provided at intervals in the MD direction, and adsorption deodorizing regions 23 are provided to fill the gaps in the areas where the chemical deodorizing regions 20 are not provided. With this arrangement, the ratio of the amount of chemical deodorizer to the adsorption type deodorizer applied, and the area ratio of the chemical deodorizing regions 20 to the adsorption deodorizing regions 23 can be adjusted by adjusting the width of the chemical deodorizing regions 20 and the adsorption deodorizing regions 23 in the MD direction.

[0073] Furthermore, in an embodiment in which multiple chemical deodorizing regions 20 are provided intermittently with spacing in the MD direction, if a first deodorizer and a second deodorizer are used to provide a first deodorizing region 21 and a second deodorizing region 22 as chemical deodorizing regions 20, then, as shown in Figure 7, it is also desirable to have an arrangement in which the first deodorizing region 21, the second deodorizing region 22 and the adsorption deodorizing region 23 are repeatedly arranged in the MD direction with a predetermined width in the paper tube base paper 32 constituting the inner circumferential surface 11B. To achieve this arrangement, for example, as shown in Figure 10, the paper tube base paper 32 constituting the inner circumferential surface 11B can be provided such that the first deodorizing region 21, the second deodorizing region 22 and the adsorption deodorizing region 23 are repeatedly arranged in the MD direction with a predetermined width. This arrangement allows for adjustment of the ratio of the amounts of the first deodorant, the second deodorant, and the adsorption deodorant, as well as the area ratio of the first deodorant, the second deodorant, and the adsorption deodorant, by adjusting the widths of the first deodorant region 21, the second deodorant region 22, and the adsorption deodorant region 23 in the MD direction.

[0074] The arrangement of the deodorizing areas is not limited to the arrangement described above. Each area 20, 23 can be formed and arranged in an appropriate shape or pattern, such as linear, dotted, circular, or block-like.

[0075] (Method of manufacturing toilet paper rolls) Next, an example of a method for manufacturing a toilet roll 10 according to an embodiment of the present invention will be described. However, the method for manufacturing a toilet roll according to the present invention is not necessarily limited to this method.

[0076] The method for manufacturing the toilet roll 10 of this embodiment, as shown in Figure 16, mainly comprises a step (A) for manufacturing a long spiral paper tube 30, a log manufacturing step (B) for manufacturing logs using the long spiral paper tube, and a cutting step (C) for cutting the logs into individual toilet rolls.

[0077] (Paper tube manufacturing process (A)) In the paper tube manufacturing process of this embodiment, as shown in (A) of FIG. 12 and FIG. 13, after applying adhesive to one side of one of the two strip-shaped long paper tube base papers 31 and 32 fed out from the original roll 31A and 32A by the adhesive roll 51, the other long paper tube base paper 32 is partially overlapped in the width direction on the adhesive-applied surface of the one long paper tube base paper 31, and the surface of the other long paper tube base paper 32 that does not contact the adhesive surface is made to face the mandrel shaft 52, that is, the surface that becomes the outer periphery of the paper tube. Then, the long paper tube base papers 31 and 32 are spirally wound around the mandrel shaft 52 to continuously form the cylindrical portion 29, and the cylindrical portion 29 is cut by the cutter 58 with a width that is more than several times the width of the kitchen roll to form a long spiral paper tube 30 (also referred to as a spiral type paper tube). This spiral paper tube has a two-layer laminated structure in which one long paper tube base paper 31 is on the outer peripheral surface side of the paper tube and the other long paper tube base paper 32 is on the outer peripheral surface side of the paper tube. In this embodiment, two long paper tube base papers 31 and 32 are spirally wound, but three or more long paper tube base papers may be spirally wound to form a long paper tube.

[0078] The amount of adhesive 44 applied to the long paper tube base paper 31 is not particularly limited, but is generally about 10 to 25 g / m 2 degree. Also, as the adhesive, those known for use in paper tubes can be used as long as they do not prevent the effects of the present invention, and examples include acrylic adhesives, hot melt adhesives, starch pastes, polyvinyl alcohol, and the like.

[0079] In the illustrated configuration, the long paper tubes 31 and 32 are wound onto the mandrel shaft 52 by a flat belt 54 wrapped between a pair of pulleys 53, 53, which applies rotational force to a cylindrical portion 29 located at a predetermined point on the mandrel shaft 52. This rotation pulls the long paper tubes 31 and 32 at a predetermined angle relative to the axis of the mandrel shaft 52, causing them to be wound in a spiral. In the illustrated example, two pairs of pulleys 53, 53 are arranged and two flat belts 54, 54 apply rotational force to the cylindrical portion 29, but the rotational force may also be applied to the cylindrical portion with a single pair of pulleys and a flat belt. Although not shown, the long paper tubes 31 and 32 can also be wound onto the mandrel shaft 52 by applying rotational force by contacting a roll instead of a flat belt 54 with the cylindrical portion 29.

[0080] In this process, when the long paper tube bases 31 and 32 are wound around the mandrel shaft 52 to form a spiral paper tube, as can be seen from the illustrated example, the long paper tube bases 31 and 32 are continuously fed onto the mandrel shaft 52, causing the cylindrical portion 29 to lengthen. This cylindrical portion 29 is continuously formed and extends towards the tip of the mandrel shaft 52. During this process, the inner surface of the cylindrical portion 29 slides against the circumferential surface of the mandrel shaft 52 as it moves toward the tip of the mandrel shaft 52.

[0081] In this embodiment, when forming the long paper tube 30 in this manner, it is desirable to apply the deodorizer to the other long paper tube base paper 32 of the two long paper tube base papers 31 and 32, that is, the long paper tube base paper 32 having the surface that will become the inner circumferential surface of the long paper tube 30 when spirally wound around the mandrel shaft 52, before overlapping it with the other long paper tube base paper 31 to which adhesive glue 44 has been applied.

[0082] The long-length paper tube base paper 31 and 32 are not necessarily limited, but have a basis weight of 100 to 220 g / m². 2The paper thickness is preferably 100 to 500 μm. A paper core with sufficient strength can be obtained. The width in the CD direction is preferably 50 to 150 mm, and more preferably 60 to 90 mm. When forming the long paper core 30, the other long paper core base paper 31 that is paired with one long paper core base paper 32 may be made from different rolls of paper, for example, they may have different basis weights or paper thicknesses.

[0083] Here, the long-length paper tube base paper 32 may be one that has been pre-treated with a deodorizer, or the deodorizer may be applied to the long-length paper tube base paper that has not been treated with a deodorizer after it has been unwound from the raw material roll 32A, before it is wound onto the mandrel shaft. It is preferable to use the long-length paper tube base paper 32 that has been pre-treated with a deodorizer, as this reduces the risk of the deodorizing liquid adhering to the mandrel shaft, and it is best to unwound the long-length paper tube base paper 32 from the raw material roll 32A that has been wound with the long-length paper tube base paper 32 that has been pre-treated with a deodorizer.

[0084] For long-length paper tubes without a deodorant coating, the deodorant can be applied by mixing the deodorant with a binder or solvent to create a deodorant liquid suitable for coating. The order in which the chemical deodorant and the adsorbent deodorant are applied is not limited. When applying a first deodorant and a second deodorant as chemical deodorants, the order in which the first deodorant, the second deodorant, and the adsorbent deodorant are applied is not limited. The coating machine used for coating the deodorant liquid can be appropriately selected from known coating machines and printing machines such as rod coaters, flexo coaters, gravure coaters, inkjet printers, and spray coating devices. When using a flexo coater or gravure coater, it is particularly desirable to use a line count of 100 to 400 lines / inch. The deodorant can be applied uniformly and evenly to the area where the deodorant liquid is to be applied. Furthermore, while a 100% area ratio (solid printing) is desirable, it is also possible to increase the screen ruling and decrease the area ratio, and this can be combined with the print design to enhance aesthetic appeal. Additionally, drying means such as heaters or heat rolls may be provided downstream of the coating machine to allow the deodorizing liquid to dry quickly. Multiple drying means may be provided.

[0085] The amount of deodorizing liquid applied can be adjusted as appropriate, taking into consideration the type of deodorizer, the deodorizing effect, the properties of the coating liquid, the drying time, etc. If the deodorizer is the above-mentioned acidic deodorizer, a preferred coating amount in one embodiment is 1 to 15 g / m². 2 In the case of an alkaline deodorant, a preferred coating amount in one embodiment is 1 to 15 g / m². 2 In the case of an adsorbent type deodorant, a preferred coating amount in one embodiment is 1 to 15 g / m². 2 That is the case.

[0086] To provide a paper tube base with a chemically deodorized area using a chemical deodorizer and an adsorption-type deodorized area using an adsorption-type deodorizer, for example, a coating liquid containing a chemical deodorizer or an adsorption-type deodorizer is applied to a long paper tube base 32 from one edge along the MD direction over a predetermined range, and then another coating liquid containing a different chemical deodorizer or adsorption-type deodorizer is applied from the opposite edge along the MD direction over a predetermined range. By adjusting the width in the CD direction of the portion to which each coating liquid is applied, the area of ​​the chemically deodorized area 20 and the adsorption-type deodorized area 23 and their area ratio can be adjusted.

[0087] Furthermore, to provide a first deodorizing region 21, a second deodorizing region 22, and an adsorption deodorizing region 23 using a first deodorizing agent and a second deodorizing agent as chemical deodorizers, for example, a coating liquid containing the first deodorizing agent, the second deodorizing agent, or an adsorption-type deodorizing agent is applied to the long paper tube base paper 32 from one edge along the MD direction over a predetermined range. Then, a coating liquid containing a first deodorizing agent, a second deodorizing agent, or an adsorption-type deodorizing agent different from the deodorizing agent contained in the first coating liquid is applied along the MD direction to the central part of a predetermined range that does not reach the other edge adjacent to the first edge. Finally, a coating liquid containing a first deodorizing agent, a second deodorizing agent, or an adsorption-type deodorizing agent different from the deodorizing agent contained in the coating liquid applied to one edge and the central part is applied along the MD direction to a predetermined range from the other edge opposite to the first edge to the central part. By adjusting the width of the area to which each coating liquid is applied in the CD direction, the area of ​​the first deodorizing area 21, the second deodorizing area 22, and the adsorption deodorizing area 23, as well as their area ratio, can be adjusted. The order in which the coating is applied—from one edge to a predetermined area, from the central area to a predetermined area, or from the other edge to a predetermined area—is not limited.

[0088] Another example of providing a paper tube base with both a chemical deodorizing region using a chemical deodorizer and an adsorption deodorizing region using an adsorption deodorizer is to continuously or intermittently coat a long paper tube base 32 with a coating liquid containing a chemical deodorizer or an adsorption deodorizer, extending in multiple rows in the CD direction at predetermined intervals in the MD direction. Then, a coating liquid containing a deodorizer different from the chemical deodorizer or adsorption deodorizer contained in the first coating liquid is continuously or intermittently coated in each of the remaining intervals, extending in the CD direction. By adjusting the width of the coating liquid applied in the MD direction, the area of ​​the chemical deodorizing region and the adsorption deodorizing region, as well as their area ratio, can be adjusted.

[0089] In this coating configuration, if a first deodorant and a second deodorant are used as chemical deodorants, and a first deodorant region 21, a second deodorant region 22, and an adsorption deodorant region 23 are provided, a coating liquid containing the first deodorant, the second deodorant, or an adsorption-type deodorant is applied continuously or intermittently so as to extend in multiple rows in the CD direction with predetermined intervals in the MD direction. Next, a coating liquid containing a deodorant different from the chemical deodorant or adsorption-type deodorant contained in the coating liquid is applied continuously or intermittently so as to extend in the CD direction, leaving a predetermined width of uncoated area in the MD direction in each of the aforementioned intervals. Furthermore, a coating liquid containing a deodorant different from the chemical deodorant or adsorption-type deodorant contained in the coating liquid and the other coating liquid is applied continuously or intermittently so as to extend in the CD direction to the uncoated area. Even in this way, the area of ​​the first deodorant region, the second deodorant region, and the adsorption deodorant region, and their area ratios can be adjusted by adjusting the width of the coating liquid applied in the MD direction.

[0090] (Paper tube base paper manufacturing process) In particular, when using long-length paper tube base paper 32 that has been pre-treated with a deodorant, the long-length paper tube base paper 32 can be manufactured by applying a deodorant liquid, as shown in Figures 10 and 15. Figure 10 shows a configuration in which a deodorant liquid containing a chemical deodorant and a deodorant liquid containing an adsorbent type deodorant are applied, while Figure 15 shows a configuration in which a first deodorant and a second deodorant are separately applied as chemical deodorants.

[0091] First, the wide, uncoated paper tube base paper 32W, which is several times the width of the long paper tube base paper 32, is unwound from the roll 32a' and the chemical deodorant is applied using coating machines 61, 61A, and 61B. In Figure 15, coating machine 61A is the coating machine that applies the first deodorant, and coating machine 61B is the coating machine that applies the second deodorant. The chemical deodorant can be applied by coating a coating solution, which is a mixture of the chemical deodorant with an appropriate binder or solvent, using a known printing press and coating machine. The coating amount is 1 to 15 g / m². 2 It is desirable to achieve this. Within this range, the deodorizing liquid can be applied sufficiently with good productivity, and a sufficient amount of deodorizer can be applied. The mixing ratio of the binder and the deodorizer should be adjusted as appropriate according to the effectiveness and properties of the deodorizer.

[0092] After applying the chemical deodorant in this manner, the coating machine 64 then coats the area containing the adsorbent deodorant. The coating liquid is applied. This coating process imparts a chemical deodorant and an adsorbent deodorant, and the material is wound up to obtain a roll 32a' of wide paper tube base paper. The amount of coating liquid containing the adsorbent deodorant applied is 1 to 15 g / m². 2 It is desirable to achieve this. Within this range, the deodorizing liquid can be applied sufficiently with good productivity, and a sufficient amount of deodorizer can be applied. The mixing ratio of the binder and the deodorizer should be adjusted as appropriate according to the effectiveness and properties of the deodorizer.

[0093] On the other hand, in the illustrated embodiment, after applying a chemical deodorant to the wide paper tube base paper 32W, preferably the coated portion of the deodorant liquid is dried via heaters (dryers) 62, 62A, 62B and heat rolls 63, 63A, 63B before applying the adsorbent deodorant in the next stage. Also, after applying the adsorbent deodorant, preferably the coated portion of the deodorant liquid is dried via heaters (dryers) 65 and heat rolls 66. These drying steps prevent the coating agent from deteriorating due to unintentional contact between undried coating liquids, and prevent sticking due to wetting in subsequent processes.

[0094] In the illustrated configuration, the chemical deodorant is applied first, followed by the adsorbent deodorant, but this order is not limited. The adsorbent deodorant may be applied first, followed by the chemical deodorant. Furthermore, the order in which the first deodorant, second deodorant, and adsorbent deodorant are applied is also not limited.

[0095] The binder to be included in the coating solution is not particularly limited, as long as it does not interfere with the effect of the deodorant. For example, if the deodorant chemically neutralizes, decomposes, or captures malodorous components in the air, a binder that does not excessively hinder the volatilization of the deodorant should be used. Examples of such binders include starch, carboxymethylcellulose, and polyvinyl alcohol.

[0096] The coating machines 61, 61A, and 61B for applying a chemical deodorant to the wide paper tube base paper 32W, and the coating machine 64 for applying an adsorbent deodorant, can be appropriately selected from known coating machines and printing machines such as rod coaters, flexo coaters, gravure coaters, inkjet printers, and spray coating devices, depending on the properties of the first and second coating liquids, similar to the case when applying to the paper tube base paper 32 described above. Among these, rod coaters and gravure coaters are particularly suitable because they can uniformly coat a large amount of liquid onto the target object and can adequately handle high-viscosity coating liquids containing deodorants. When using a gravure coater, it is desirable to use a line count of 100 to 400 lines / inch. The deodorant can be applied uniformly and evenly to the areas on the wide paper tube base paper 32W where the coating liquid is to be applied. While a 100% coverage (solid printing) is preferable, it is also possible to increase the screen ruling and decrease the coverage, and this can be combined with print design to enhance aesthetic appeal.

[0097] The wide paper tube base paper 32W, treated with a chemical deodorant and an adsorbent deodorant, is continuously cut along the MD direction with a cutter 68 at intervals in the CD direction, and each section is wound up to form a paper tube base paper roll 32A on which the long paper tube base paper 32 treated with the deodorant is wound. However, the cutting method is not limited to this. For example, after winding up the wide paper tube base paper 32W treated with the chemical deodorant and the adsorbent deodorant, the roll may be cut into sections at predetermined intervals along the axial direction of the roll with a cutter to obtain multiple paper tube base paper rolls 32A on which the long paper tube base paper 32 treated with the deodorant is wound. Alternatively, the wide paper tube base paper 32W treated with the chemical deodorant and the adsorbent deodorant may be wound up once, then unwound again, and continuously cut along the MD direction with a cutter to wind up multiple paper tube base paper rolls 32A on which the long paper tube base paper 32 is wound. Furthermore, since the paper tube base paper 32 is used in the paper tube manufacturing process (A), the width in the CD direction is preferably 50 to 150 mm, and more preferably 60 to 90 mm. Therefore, it is desirable that the cut width also be within this range.

[0098] In particular, if we consider the paper tube base paper 32 with the arrangement of chemical deodorizing regions 20 and adsorption deodorizing regions 23 as shown in Figure 8, the application of the chemical deodorizer and adsorption deodorizer to the wide paper tube base paper 32W is performed, for example, by coating the wide paper tube base paper 32W with a coating liquid containing the chemical deodorizer using a coating machine 61, which coats the coating liquid continuously or intermittently so that it extends in multiple rows in the MD direction with predetermined intervals in the CD direction, and then by coating the wide paper tube base paper 32W with a coating liquid containing the adsorption deodorizer using a coating machine 64, which coats each of the aforementioned intervals continuously or intermittently so that it extends in the MD direction. This coating process forms a wide paper tube base paper 32W in which the chemical deodorizing regions 20 and adsorption deodorizing regions 23 extending in the MD direction and adsorbing deodorizing regions 23 are alternately arranged in the CD direction, as shown in Figure 16.

[0099] Then, by continuously cutting the wide paper tube base paper 32W along the MD direction at positions y1-y1 to y4-y4 shown in Figure 16, for example, so that the chemical deodorizing region 20 and the adsorption deodorizing region 23 are included, and in particular so that the chemical deodorizing region 20 and the adsorption deodorizing region 23 are included in one row each, multiple paper tube base papers 32 with the arrangement of the chemical deodorizing region 20 and the adsorption deodorizing region 23 shown in Figure 8 can be obtained. In the case of the wide paper tube base paper 32W shown in Figure 16, five long paper tube base papers 32 can be obtained.

[0100] Furthermore, if the paper tube base paper 32 is arranged in the manner shown in Figure 9, with a first deodorizing region 21, a second deodorizing region 22, and an adsorption deodorizing region 23, then the application of the first deodorizer, the second deodorizer, and the adsorption type deodorizer to the wide paper tube base paper 32W is, for example, by continuously or intermittently coating the wide paper tube base paper 32W with a coating liquid containing the first deodorizer using a coating machine 61A, so that it extends in multiple rows in the MD direction with predetermined intervals in the CD direction; then, by continuously or intermittently coating the paper tube base paper 32W with a coating liquid containing the second deodorizer using a coating machine 61B, so that it extends in the MD direction in each of the gaps and so that uncoated portions are formed along the MD direction; and then, by continuously or intermittently coating the uncoated portions along the MD direction with a coating machine 64. This coating process forms a wide paper tube base paper 32W in which a first deodorizing region 21, a second deodorizing region 22, and an adsorption deodorizing region 23, which extend in the MD direction as shown in Figure 17, are alternately arranged in the CD direction.

[0101] Then, by continuously cutting the wide paper tube base paper 32W along the MD direction at positions y1-y1 to y4-y4 shown in Figure 17, for example, so that the first deodorizing region 21, the second deodorizing region 22 and the adsorption deodorizing region 23 are included, and in particular so that the first deodorizing region 21, the second deodorizing region 22 and the adsorption deodorizing region 23 are included in one row each, multiple paper tube base papers 32 with the arrangement of the first deodorizing region 21, the second deodorizing region 22 and the adsorption deodorizing region 23 shown in Figure 9 can be obtained. In the case of the wide paper tube base paper 32W shown in Figure 17, five long paper tube base papers 32 can be obtained.

[0102] On the other hand, if we consider the paper tube base paper 32 with the arrangement of chemical deodorizing regions 20 and adsorption deodorizing regions 23 as shown in Figure 10, the application of the chemical deodorizer and adsorption deodorizer to the wide paper tube base paper 32W is done by coating the wide paper tube base paper 32W with a coating liquid containing the chemical deodorizer using a coating machine 61, continuously or intermittently coating the wide paper tube base paper 32W with the coating liquid extending in the CD direction at predetermined intervals in the MD direction. Then, using a coating machine 64, which coats the coating liquid containing the adsorption deodorizer, the coating is applied continuously or intermittently to each of the aforementioned gaps, extending in the CD direction. As a result of this coating, the wide paper tube base paper 32W has the first deodorizer and the second deodorizer extending in the CD direction, as shown in Figure 18, arranged alternately in the MD direction.

[0103] Furthermore, with this wide paper tube base paper 32W, for example, by continuously cutting it with a cutter along the MD direction at the positions of the cutting lines y1-y1 to y4-y4 shown in Figure 18, a paper tube base paper 32 with the arrangement of the chemical deodorizing region 20 and the adsorption deodorizing region 23 shown in Figure 10 can be obtained. Even with the wide paper tube base paper 32W shown in Figure 18, five long paper tube base papers 32 can be obtained.

[0104] On the other hand, if the paper tube base paper 32 is arranged in the manner shown in Figure 11, with the first deodorizing region 21, the second deodorizing region 22, and the adsorption deodorizing region 23, then the application of the first deodorizing region 21, the second deodorizing region 22, and the adsorption deodorizing region 23 to the wide paper tube base paper 32W can be done, for example, by coating the wide paper tube base paper 32W with a coating liquid containing the first deodorizer using a coating machine 61A, continuously or intermittently coating it with the CD direction at predetermined intervals in the MD direction, and then by coating the second deodorizer using a coating machine 61B, continuously or intermittently coating each of the aforementioned intervals along the CD direction and forming uncoated portions along the CD direction, and then by coating the uncoated portions along the CD direction using a coating machine 64. This coating process forms a wide paper tube base paper 32W in which a first deodorizing region 21 and a second deodorizing region 22, and an adsorption deodorizing region 23, extending in the CD direction as shown in Figure 19, are alternately arranged in the MD direction.

[0105] Furthermore, with this wide paper tube base paper 32W, for example, by continuously cutting it with a cutter along the MD direction at the positions of the cutting lines y1-y1 to y4-y4 shown in Figure 19, a paper tube base paper 32 with the arrangement of the first deodorizing region 21, the second deodorizing region 22, and the adsorption deodorizing region 23 shown in Figure 11 can be obtained. Even with the wide paper tube base paper 32W shown in Figure 19, five long paper tube base papers 32 can be obtained.

[0106] (Log manufacturing process (B)) On the other hand, in this embodiment, the log 70 is manufactured in a log manufacturing process (Figure 8 (B)) in parallel with or after the manufacturing of the long paper tube 30. The log 70 is a common term in the industry and is an intermediate product that has the same diameter as the final product, the toilet roll 10, and a width equivalent to multiple units of the final product.

[0107] The log 70 is manufactured by continuously or in stages, by unwinding and winding toilet paper base paper 71,71, which is substantially the same width as the long paper tube 30, from rolls 71A,71A to form the log 70. A known winder device X2 can be used for this winding. In the illustrated example, toilet paper base paper 71,71 is unwound from two rolls 71A,71A, and after being joined at the overlapping section 81 to form a 2-ply toilet paper base paper 72, perforations are formed at the perforation line forming device 82, and then wound up at the winding means 83 to form a 2-ply structure. In the illustrated form, toilet paper base paper 71,71 is unwound from two rolls 71A,71A to form a 2-ply toilet paper base paper 72 with a laminated structure, but the toilet paper base paper according to the present invention is not limited to this 2-ply, and may be 1-ply or 3-ply or more. Furthermore, when using a multi-ply structure, the basis weight and physical properties of each base paper do not need to be the same. Alternatively, the laminated sheets may be unwound from a roll that has been wound with pre-laminated sheets and wound onto a long paper tube 30 to form the log 70.

[0108] In this illustrated embodiment, a perforation line forming device 82 is provided to create perforations, and the paper is wound up by a winding means 83. However, in this invention, a perforation line forming device and the creation of perforations are not necessarily required. In this embodiment, although not shown, a known contact embossing device may be provided before the perforation line forming device 82 to create contact embossing, or embossing may be applied to each toilet paper base paper 71, 71 with an embossing roll before the overlapping section 81, or adhesive may be applied to the tops of the raised parts of the embossed paper to laminate and integrate the papers together.

[0109] As described above, once the log 70 has been manufactured, multiple logs 70 are stored in a known log accumulator X3 and then moved to the subsequent log cutter equipment X4. Then, as shown in Figure 8(C), the log 70 is cut to the product width by a known log cutter 91 to form individual toilet rolls 10, 10... Simultaneously with the cutting of the logs, the long paper tubes are also cut, and these long paper tubes also become individual paper tubes. Thus, according to this embodiment, the toilet rolls 10 described in the "Toilet Roll" section above are manufactured.

[0110] In this embodiment, it is desirable that the toilet roll be packaged in a gas-barrier resin film to prevent the deodorizing function from deteriorating due to contact between odor components and the deodorizer, or unintentional volatilization of the deodorizer, before use in the toilet space, for example, during transportation to stores after manufacturing or while on display as a product in stores. For example, the oxygen permeability of the resin film should be 200 ml / m². 2 Preferably less than 100 ml / m² 2 It is less than or equal to one day. [Examples]

[0111] A test was conducted to determine the deodorizing effect of samples relating to the toilet roll according to the present invention (Examples 1-10) and samples relating to other toilet rolls (Comparative Examples 1-5). The inner surface area of ​​the paper tube used was 0.015 m². 2 That is the case.

[0112] The paper tube according to Example 1 has a first deodorizing region coated with an acidic deodorizer and an adsorption deodorizing region coated with adsorption-type deodorizer B formed on its inner surface. The acidic deodorizer mainly consists of organic acids and organic acid salts, has a pH of 4.0 to 5.0, and a coating amount of 4.0 g / m². 2 The area of ​​the first deodorizing zone is 0.0075 m². 2 Adsorbent deodorant B is an inorganic deodorant containing silica alumina and an inorganic compound including amphoteric oxides, and it operates at a pH of 6.5 to 10.5. The application rate is 4.0 g / m². 2 The area of ​​the adsorption and deodorization zone is 0.0075 m².2 Furthermore, the first deodorizing area and the adsorption-type deodorizing area do not overlap. The area ratio of the first deodorizing area to the adsorption-type deodorizing area is 50%:50%.

[0113] The paper tube according to Example 2 has a first deodorizing region coated with an acidic deodorizer and an adsorption deodorizing region coated with adsorption-type deodorizer B formed on its inner surface. The acidic deodorizer mainly consists of organic acids and organic acid salts, has a pH of 4.0 to 5.0, and a coating amount of 4.0 g / m². 2 The area of ​​the first deodorizing zone is 0.01005 m². 2 Adsorbent deodorant B is an inorganic deodorant containing silica alumina and an inorganic compound including amphoteric oxides, and it operates at a pH of 6.5 to 10.5. The application rate is 4.0 g / m². 2 The area of ​​the adsorption and deodorization zone is 0.00495 m². 2 Furthermore, the first deodorizing area and the adsorption-type deodorizing area do not overlap. The area ratio of the first deodorizing area to the adsorption-type deodorizing area is 67%:33%.

[0114] The paper tube according to Example 3 has a first deodorizing region coated with an acidic deodorizer and an adsorption deodorizing region coated with adsorption-type deodorizer B formed on its inner surface. The acidic deodorizer mainly consists of organic acids and organic acid salts, has a pH of 4.0 to 5.0, and a coating amount of 4.0 g / m². 2 The area of ​​the first deodorizing zone is 0.01125 m². 2 Adsorbent deodorant B is an inorganic deodorant containing silica alumina and an inorganic compound including amphoteric oxides, and it operates at a pH of 6.5 to 10.5. The application rate is 4.0 g / m². 2 The area of ​​the adsorption and deodorization zone is 0.00375 m². 2 Furthermore, the first deodorizing area and the adsorption-type deodorizing area do not overlap. The area ratio of the first deodorizing area to the adsorption-type deodorizing area is 75%:25%.

[0115] The paper tube according to Example 4 has a first deodorizing region coated with an acidic deodorizer and an adsorption deodorizing region coated with adsorption-type deodorizer B formed on its inner surface. The acidic deodorizer mainly consists of organic acids and organic acid salts, has a pH of 4.0 to 5.0, and a coating amount of 4.0 g / m².2 The area of ​​the first deodorizing zone is 0.012 m². 2 Adsorbent deodorant B is an inorganic deodorant containing silica alumina and an inorganic compound including amphoteric oxides, and it operates at a pH of 6.5 to 10.5. The application rate is 4.0 g / m². 2 The area of ​​the adsorption and deodorization zone is 0.003 m². 2 Furthermore, the first deodorizing area and the adsorption-type deodorizing area do not overlap. The area ratio of the first deodorizing area to the adsorption-type deodorizing area is 80%:20%.

[0116] The paper tube according to Example 5 has a second deodorizing region coated with an alkaline deodorizer and an adsorption deodorizing region coated with adsorption-type deodorizer B formed on its inner surface. The alkaline deodorizer contains sodium hydroxide and polyamine polycarboxylic acid, has a pH of 8.5 to 9.5, and a coating amount of 4.0 g / m². 2 The area of ​​the first deodorizing zone is 0.0075 m². 2 Adsorbent deodorant B is an inorganic deodorant containing silica alumina and an inorganic compound including amphoteric oxides, and it operates at a pH of 6.5 to 10.5. The application rate is 4.0 g / m². 2 The area of ​​the adsorption and deodorization zone is 0.0075 m². 2 Furthermore, the second deodorizing area and the adsorption-type deodorizing area do not overlap. The area ratio of the second deodorizing area to the adsorption-type deodorizing area is 50%:50%.

[0117] The paper tube according to Example 6 has a first deodorizing region coated with an acidic deodorizer, a second deodorizing region coated with an alkaline deodorizer, and an adsorption deodorizing region coated with adsorption-type deodorizer B formed on its inner surface. The acidic deodorizer mainly consists of organic acids and organic acid salts, has a pH of 4.0 to 5.0, and a coating amount of 4.0 g / m². 2 The area of ​​the first deodorizing zone is 0.005 m². 2 The alkaline deodorant contains sodium hydroxide and polyamine polycarboxylic acid, has a pH of 8.5-9.5, and a coating weight of 4.0 g / m². 2 The area of ​​the first deodorizing zone is 0.005 m². 2Adsorbent deodorant B is an inorganic deodorant containing silica alumina and an inorganic compound including amphoteric oxides, and it operates at a pH of 6.5 to 10.5. The application rate is 4.0 g / m². 2 The area of ​​the adsorption and deodorization zone is 0.005 m². 2 Furthermore, the first deodorizing area, the second deodorizing area, and the adsorption deodorizing area do not overlap. The area ratio of the first deodorizing area, the second deodorizing area, and the adsorption deodorizing area is 33.3%:33.3%:33.3%.

[0118] The paper tube according to Example 7 has a first deodorizing region coated with an acidic deodorizer and an adsorption deodorizing region coated with adsorption-type deodorizer B formed on its inner surface. The acidic deodorizer mainly consists of organic acids and organic acid salts, has a pH of 4.0 to 5.0, and a coating amount of 4.0 g / m². 2 The area of ​​the first deodorizing zone is 0.015 m². 2 Adsorbent deodorant B is an inorganic deodorant containing silica alumina and an inorganic compound including amphoteric oxides, and it operates at a pH of 6.5 to 10.5. The application rate is 4.0 g / m². 2 The area of ​​the adsorption and deodorization zone is 0.015 m². 2 Furthermore, the first deodorizing area and the adsorption-type deodorizing area overlap completely. The area ratio of the first deodorizing area to the adsorption-type deodorizing area is 100%:100%.

[0119] The paper tube according to Example 8 has a second deodorizing region coated with an alkaline deodorizer and an adsorption deodorizing region coated with adsorption-type deodorizer B formed on its inner surface. The alkaline deodorizer contains sodium hydroxide and polyamine polycarboxylic acid, has a pH of 8.5 to 9.5, and a coating amount of 4.0 g / m². 2 The area of ​​the second deodorizing zone is 0.015 m². 2 Adsorbent deodorant B is an inorganic deodorant containing silica alumina and an inorganic compound including amphoteric oxides, and it operates at a pH of 6.5 to 10.5. The application rate is 4.0 g / m². 2 The area of ​​the adsorption and deodorization zone is 0.015 m². 2Furthermore, the second deodorizing area and the adsorption-type deodorizing area overlap completely. The area ratio of the second deodorizing area to the adsorption-type deodorizing area is 100%:100%.

[0120] The paper tube according to Example 9 has a first deodorizing region coated with an acidic deodorizer and an adsorption deodorizing region coated with adsorption-type deodorizer B formed on its inner surface. The acidic deodorizer mainly consists of organic acids and organic acid salts, has a pH of 4.0 to 5.0, and a coating amount of 4.5 g / m². 2 The area of ​​the first deodorizing zone is 0.0075 m². 2 Adsorbent deodorant B is an inorganic deodorant containing silica alumina and an inorganic compound including amphoteric oxides, and it operates at a pH of 6.5 to 10.5. The application rate is 4.5 g / m². 2 The area of ​​the adsorption and deodorization zone is 0.0075 m². 2 Furthermore, the first deodorizing area and the adsorption-type deodorizing area do not overlap. The area ratio of the first deodorizing area to the adsorption-type deodorizing area is 50%:50%.

[0121] The paper tube according to Example 10 has a first deodorizing region coated with an acidic deodorizer, a second deodorizing region coated with an alkaline deodorizer, and an adsorption deodorizing region coated with adsorption-type deodorizer B formed on its inner surface. The acidic deodorizer mainly consists of organic acids and organic acid salts, has a pH of 4.0 to 5.0, and a coating amount of 4.5 g / m². 2 The area of ​​the first deodorizing zone is 0.005 m². 2 The alkaline deodorant contains sodium hydroxide and polyamine polycarboxylic acid, has a pH of 8.5-9.5, and a coating amount of 4.5 g / m². 2 The area of ​​the first deodorizing zone is 0.005 m². 2 Adsorbent deodorant B is an inorganic deodorant containing silica alumina and an inorganic compound including amphoteric oxides, and it operates at a pH of 6.5 to 10.5. The application rate is 4.5 g / m². 2 The area of ​​the adsorption and deodorization zone is 0.005 m². 2 Furthermore, the first deodorizing area, the second deodorizing area, and the adsorption deodorizing area do not overlap. The area ratio of the first deodorizing area, the second deodorizing area, and the adsorption deodorizing area is 33.3%:33.3%:33.3%.

[0122] The paper tube in Comparative Example 1 has an acidic deodorant applied only to the first deodorizing region on its inner surface. The acidic deodorant mainly consists of organic acids and organic acid salts, has a pH of 4.0 to 5.0, and a coating amount of 4.0 g / m². 2 The area of ​​the first deodorizing zone is 0.015 m². 2 That is the case.

[0123] The paper tube in Comparative Example 2 has an alkaline deodorizing agent applied only to the inner surface of the second deodorizing region. The alkaline deodorizing agent contains sodium hydroxide and polyamine polycarboxylic acid, has a pH of 8.5 to 9.5, and a coating amount of 4.0 g / m². 2 The area of ​​the second deodorizing zone is 0.015 m². 2 That is the case.

[0124] The paper tube in Comparative Example 3 has an adsorption-type deodorizing region formed only on its inner surface, to which the adsorption-type deodorizer A is applied. The adsorption-type deodorizer A mainly consists of an inorganic compound containing a silver ion zeolite support and operates at a pH of 7.0 to 10.5. The coating amount is 4.0 g / m². 2 The area of ​​the second deodorizing zone is 0.015 m². 2 That is the case.

[0125] The paper tube in Comparative Example 4 has an adsorption-type deodorizing region formed only on its inner surface, to which the adsorption-type deodorizer B is applied. The adsorption-type deodorizer B mainly consists of an inorganic compound containing silica alumina and amphoteric oxides, and operates at a pH of 6.5 to 10.5. The coating amount is 4.0 g / m². 2 The area of ​​the second deodorizing zone is 0.015 m². 2 That is the case.

[0126] The paper tube in Comparative Example 5 is a blank sample that has not been treated with a deodorant.

[0127] Furthermore, it has been confirmed that mixing the acidic and alkaline deodorizers used results in a neutralization reaction, leading to a decrease in their deodorizing effect.

[0128] The test procedure is described below. The test was conducted in a constant temperature room maintained at 23°C and 55% relative humidity. For each example, a paper tube was placed in an airtight bag (a 5L Tedlar bag manufactured by AS ONE Corporation), and gaseous ammonia and hydrogen sulfide were injected into the bag as odors. The initial concentration of ammonia in the bag was adjusted to 260 ppm and the initial concentration of hydrogen sulfide to 4.4 ppm, the bag was sealed, and left to stand.

[0129] The concentration of odors inside the bag was measured using a gas detection tube (a product of Gastec Co., Ltd.) 10 minutes and 2 hours after standing. The deodorization rate of each odor was calculated from the measurement results using the following formula 1. (Deodorization rate (%)) = [(Initial odor concentration (ppm)) - (Odor concentration after 10 minutes or after 2 hours (ppm))] / (Initial odor concentration (ppm)) × 100 ... Formula 1 Furthermore, the detection limit for hydrogen sulfide is 88.6%.

[0130] The results are shown in Table 1.

[0131] [Table 1]

[0132] Comparing Comparative Example 1, which used only an acidic deodorant, with Comparative Example 5, which was a blank sample, Comparative Example 1, which used only an acidic deodorant, was hardly able to deodorize hydrogen sulfide. Similarly, comparing Comparative Example 2, which used only an alkaline deodorant, with Comparative Example 5, which was a blank sample, Comparative Example 2, which used only an alkaline deodorant, was hardly able to deodorize ammonia. In contrast, Examples 1 to 7 of the present invention showed effective results against each malodorous component of ammonia and hydrogen sulfide. Furthermore, the results were superior to those of Comparative Examples 3 and 4, which used only adsorption-type deodorants. It was confirmed that a high deodorizing effect can be achieved by using a combination of a chemical deodorant and an adsorption-type deodorant.

[0133] Furthermore, comparing Examples 1-6 with Examples 7 and 8, it was found that the effect of the non-overlapping deodorizing areas was greater than that of the amount of deodorizer applied, confirming that it is useful to ensure that the deodorizing areas do not overlap. Moreover, from Examples 1, 5 and 6, it is considered particularly effective when a first and second deodorizing area are applied as chemical deodorizing areas, with the first deodorizing area being the area where an acidic deodorizer is applied and the second deodorizing area being the area where an alkaline deodorizer is applied, and the second deodorizing area being larger than or equal to the area of ​​the first deodorizing area. In Comparative Example 1, the hydrogen sulfide deodorization rate tended to increase slightly over time, and in Comparative Example 2, the ammonia deodorization rate tended to increase slightly over time. However, compared to Comparative Example 5, which was a blank sample, this is due to the temporary absorption of ammonia and hydrogen sulfide by the paper itself, and is not due to the deodorizing effect of the deodorizer in a state where re-release is possible.

[0134] Furthermore, the amount of deodorant applied differed between Example 1 and Example 9, and between Example 6 and Example 7, and the deodorizing effect increased slightly with increasing the amount of deodorant applied. However, when comparing the change in effect between Example 1 and Example 9 with the change in effect between Example 1 and Example 2, the division into the first and second deodorizing regions had a greater impact on the deodorizing effect. [Explanation of Symbols]

[0135] 10...Toilet roll, 11...Paper tube, 11B...Inner circumference of paper tube, 12...Toilet paper, L1...Width of toilet roll, L2...Diameter of toilet roll, L3...Inner diameter of paper tube, 20...Chemical deodorization area, 21...First deodorization area, 22...Second deodorization area, 23...Adsorption deodorization area, 30...Long paper tube, 31,32...Long paper tube base paper, 31A,32A,32a,32a′...Base roll, 51...Gluing roll, 52...Mandrel shaft, 53...Pulley, 54...Flat belt, 58...Cutter, 61, 64...Coating machine, 62, 65...Heater, 63, 66...Heater roll, 70...Log, 71...Toilet paper base paper, 71A...Roll, 72...2-ply toilet paper base paper, 81...Overlapping section, 82...Perforation line forming device, 83...Winding means, 91...Log cutter, C...Axial direction of the paper tube.

Claims

1. A toilet roll in which a strip of toilet paper is wound around a paper tube, The inner surface of the paper tube has a chemical deodorizing region to which a chemical deodorizing agent is applied for chemically deodorizing odors, and an adsorption deodorizing region to which an adsorption type deodorizing agent is applied for deodorizing odors by adsorbing them. A toilet roll characterized by the following features.

2. The toilet roll according to claim 1, wherein the chemical deodorizing region comprises a first deodorizing region to which a first deodorizing agent for chemically deodorizing a first odor is applied, a second deodorizing region to which a second deodorizing agent for chemically deodorizing a second odor different from the first odor is applied, and the first deodorizing region and the second deodorizing region have regions that do not overlap with each other.

3. The toilet roll according to claim 2, wherein the first odor is derived from an alkaline substance, and the second odor is derived from an acidic substance.

4. The toilet roll according to claim 2, wherein the first deodorant and the second deodorant, upon contact with each other, cause the deodorizing function of at least one of the deodorants to be reduced or lost.

5. The toilet roll according to claim 3 or 4, wherein the first deodorant is an acidic deodorant and the second deodorant is an alkaline deodorant.

6. The toilet roll according to claim 1, wherein the chemical deodorizing region and the adsorption deodorizing region have areas that do not overlap with each other, and the ratio of the area of ​​the areas where the chemical deodorizing region and the adsorption deodorizing region do not overlap with each other to the area of ​​the inner circumferential surface of the paper tube is 80% or more.

7. The toilet roll according to claim 2, wherein the area of ​​the chemical deodorizing region in which the first deodorizing region and the second deodorizing region do not overlap is 80% or more.

8. The toilet roll according to claim 6, wherein the percentage of the area of ​​the portion of the chemical deodorizing region that does not overlap with the adsorption-type deodorizing region relative to the area of ​​the inner circumference of the paper tube is 50 to 80%, and the percentage of the area of ​​the portion of the adsorption-type deodorizing region that does not overlap with the chemical deodorizing region is 20 to 50%.

9. A paper tube that forms the core of a toilet roll, which is made by winding a strip of toilet paper around it. The inner surface of the paper tube has a chemical deodorizing region to which a chemical deodorizing agent is applied to chemically deodorize odors, and an adsorption deodorizing region to which an adsorption type deodorizing agent is applied to which odors are adsorbed and deodorized. A paper tube characterized in that the chemical deodorizing region and the adsorption deodorizing region have regions that do not overlap with each other.

10. The paper tube according to claim 9, wherein the chemical deodorizing region comprises a first deodorizing region to which a first deodorizing agent for chemically deodorizing a first odor is applied, a second deodorizing region to which a second deodorizing agent for chemically deodorizing a second odor different from the first odor is applied, and regions in which the first deodorizing region and the second deodorizing region do not overlap with each other.

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