Toilet rolls and paper tubes

Abstract

This invention provides toilet rolls and paper tubes that can effectively deodorize multiple types of odors using two types of deodorizers. [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 11A of the paper tube 11 has a first deodorizing region to which a first deodorizing agent 21 that chemically deodorizes the first odor in the toilet space is applied, and a second deodorizing region to which a second deodorizing agent 22 that chemically deodorizes the second odor is applied, and the first deodorizing region and the second deodorizing region have regions that do not overlap with each other.

Description

[Technical Field]

[0001] This invention relates to a toilet roll and a paper tube, which are made by winding strip-shaped toilet paper onto a paper tube. [Background technology]

[0002] Conventionally, technologies have been proposed to deodorize malodorous components in toilet spaces. For example, there are technologies to reduce malodorous components by coating the inner surface of the toilet roll core with a deodorant (Patent Documents 1 and 3), and technologies to include a deodorant in the tail seal adhesive used to bond the end of the toilet paper roll (Patent Document 2).

[0003] The unpleasant odors in a toilet space consist of several components, the most common being urine odor and fecal odor. The main cause of urine odor is ammonia, and the main cause of fecal odor is hydrogen sulfide. Because these substances have different properties, a deodorizer that exhibits a deodorizing effect on each specific substance must be selected.

[0004] Patent Document 3 describes a technology for deodorizing urine odor, and aims to deodorize ammonia derived from urine, which is one of the malodorous components in toilet spaces. It proposes a technology that involves applying a polyphenol-based deodorant containing organic acids and organic acid salts, which have a high deodorizing function against ammonia, to toilet rolls.

[0005] On the other hand, Patent Document 4 is a technology for deodorizing fecal odor, and in particular proposes a technology relating to a deodorant aimed at deodorizing hydrogen sulfide and other substances derived from feces. [Prior art documents] [Patent Documents]

[0006] [Patent Document 1] Japanese Utility Model Publication No. Showa 62-197660 [Patent Document 2] Japanese Utility Model Publication No. 7-36887 [Patent Document 3] Japanese Patent Publication No. 2018-166863

Patent Document 4

Summary of the Invention

Problems to be Solved by the Invention

[0007] However, since the malodor components consist of several odors, when a specific deodorant is used, only the odor corresponding to the deodorant is deodorized, and there is a problem that the other odors remain undeodorized.

[0008] Therefore, the main object of the present invention is to provide a toilet roll and a paper tube capable of effectively deodorizing a plurality of types of odors.

Means for Solving the Problems

[0009] The present invention that solves the above problems and its effects are as follows. 〔First Aspect〕 A toilet roll in which a strip of toilet paper is wound around a paper tube, The inner peripheral surface of the paper tube has a first deodorant region provided with a first deodorant that chemically deodorizes a first odor in the toilet space, and a second deodorant region provided with a second deodorant that chemically deodorizes a second odor in the toilet space different from the first odor, The first deodorant region and the second deodorant region have regions that do not overlap with each other, A toilet roll characterized by the above.

[0010] The toilet roll according to the first aspect can deodorize different types of odors, namely the first odor and the second odor, since the first deodorant and the second deodorant are provided. Also, since the first deodorant region and the second deodorant region have regions that do not overlap with each other, the deodorizing effect by one deodorant is less likely to be suppressed by the deodorizing effect by the other deodorant.

[0011] 〔Second Aspect〕 The first odor is an odor generated from an alkaline substance, and the second odor is an odor emitted from an acidic substance. The toilet roll of the first aspect.

[0012] In the case of the toilet roll of this aspect, 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, can be effectively deodorized, and they are odors that frequently occur in the toilet space. It can effectively deodorize the urine odor and fecal odor, and the discomfort felt in the toilet space can be reduced.

[0013] 〔The third aspect〕 When the first deodorant and the second deodorant come into contact with each other, the deodorizing function of at least one of the deodorants decreases or is lost. The toilet roll of the first aspect.

[0014] Even in the case of the toilet roll of this aspect, since there is a region where they do not overlap with each other, the deodorizing function is sufficiently exerted in this region. <0000s110>

[0015] 〔The fourth aspect〕 The first deodorant is an acidic deodorant, and the second deodorant is an alkaline deodorant. The toilet roll of the first aspect.

[0016] In the case of the toilet roll of this aspect, it has the effect of selectively deodorizing those that chemically react with the acidic deodorant and those that chemically react with the alkaline deodorant among the odors.

[0017] 〔The fifth aspect〕 The ratio of the area of the region where the first deodorizing region and the second deodorizing region do not overlap with each other to the area of the inner peripheral surface of the paper tube is 80% or more. The toilet roll of the first aspect.

[0018] With this type of toilet roll, there is ample space that does not overlap, allowing for effective odor elimination.

[0019] [Sixth aspect] The percentage of the area of ​​the portion of the first deodorizing region that does not overlap with the second deodorizing region, relative to the total area of ​​the inner surface of the paper tube, is 20-67%, and the percentage of the area of ​​the portion of the second deodorizing region that does not overlap with the first deodorizing region is 33-80%. A toilet roll in the first embodiment.

[0020] 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.

[0021] [Seventh 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 first deodorizing region to which a first deodorizing agent is applied to chemically deodorize the first odor in the toilet space, and a second deodorizing region to which a second deodorizing agent is applied to chemically deodorize the second odor. A paper tube characterized in that the first deodorizing region and the second deodorizing region have regions that do not overlap with each other.

[0022] It produces the same effects as the first embodiment. [Effects of the Invention]

[0023] As described above, the present invention provides toilet rolls and paper tubes that can effectively deodorize multiple types of odors. [Brief explanation of the drawing]

[0024] [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 figure shows an example of applying a deodorizer to a long paper tube base paper according to an embodiment of the present invention. [Figure 7] 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 8] This figure shows an overview of a method for manufacturing toilet roll according to an embodiment of the present invention. [Figure 9] 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 10] This figure shows an example of manufacturing long-length paper tube base paper according to an embodiment of the present invention. [Figure 11] This figure shows an embodiment of the present invention in which a deodorant is applied to a wide paper tube base paper. [Figure 12] 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. [Modes for carrying out the invention]

[0025] Embodiments of the present invention will now be described below with reference to Figures 1 to 12. However, the present invention is not limited to these embodiments.

[0026] (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.

[0027] The toilet roll 10 according to the present invention is characterized in that, as shown in Figure 2 which shows a cross-sectional view of the paper tube 11, the inner circumferential surface 11A of the paper tube 11 is provided with a first deodorizing region 21 to which a first deodorizing agent is applied to chemically deodorize a first odor in the toilet space, and a second deodorizing region 22 to which a second deodorizing agent is applied to chemically deodorize a second odor in the toilet space that is different from the first odor, and the first deodorizing region 21 and the second deodorizing region 22 have areas that do not overlap with each other.

[0028] When considering applying a deodorant to a paper tube 11, one can consider applying it to the inner and / or outer surfaces of the paper tube 11. However, in the case of a toilet roll 10 in which toilet paper 12 is wound around a paper tube 11, even if a deodorant is applied to the outer surface of the paper tube 11, the deodorant function will not be fully exerted because the outer surface is covered by the toilet paper 12. On the other hand, the inner surface 11A of the paper tube 11 of a toilet roll 10 is not covered by the toilet paper 12, so the deodorant function of the deodorant will not be fully exerted.

[0029] 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.

[0030] 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.

[0031] Basis weight is measured according to the basis weight measurement method of JIS P 8124 (1998), and 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.

[0032] In this embodiment, the paper tube 11 is preferably a layered spiral paper tube in which multiple sheets of paper tube base paper are wound in a spiral shape. The basis weight per sheet of paper tube base paper is 100 to 220 g / m². 2 The paper thickness should preferably be between 100 and 500 μm. This will allow for sufficient strength to be obtained.

[0033] (Deodorizer) Next, the first and second deodorants according to this embodiment will be described. The first and second deodorants are also called chemical deodorants, and their deodorizing mechanism is that when malodorous components come into contact with the deodorant in the deodorizing area, a chemical reaction occurs and they are transformed into odorless components or components that do not emit malodorous odors, thereby deodorizing them. Furthermore, if the deodorant is volatilized from the 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 first and second deodorants can be applied to the paper tube 11 in liquid form, liquid-gel form, powder form, granular form, or the like.

[0034] A binder may be used when applying the first and second deodorants to the inner surface of the paper tube. The binder is not particularly limited as long as it does not hinder the effect of the deodorants. 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.

[0035] Here, the first odor eliminated by the first deodorant and the second odor eliminated by the second deodorant are different odors, and factors that distinguish them include differences in pH and differences in acidity / alkaliness. For example, the first odor in a toilet space can be classified as an odor emitted mainly from substances with a pH of 7 or higher, while the second odor can be classified as an odor emitted mainly from substances with a pH of less than 7. Furthermore, the first odor can be classified as an odor emitted mainly from alkaline substances, while the second odor can be classified as an odor emitted mainly 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.

[0036] 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.

[0037] If the primary odor is mainly derived from alkaline substances such as amines, which are urine odors, and the secondary odor is mainly derived from acidic substances such as sulfides, which are fecal odors, then it is desirable to use an acidic deodorant as the first deodorant and an alkaline deodorant as the second 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 first deodorant and a weakly alkaline deodorant as the second 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.

[0038] 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.

[0039] 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.

[0040] Specific examples of organic acids and organic salts are preferably those that are highly safe for the human body. Examples include lactic acid, tartaric acid, malic acid, fumaric acid, succinic acid, citric 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.

[0041] The amount of acidic deodorant applied to the paper tube is not necessarily limited, but the content on the inner surface 11A 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 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.

[0042] 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.

[0043] The amount of alkaline deodorant applied to the paper tube is not necessarily limited, but the content on the inner surface 11A of the paper tube 11 should be between 1 and 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.

[0044] 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.

[0045] Here, the first and second deodorants of the above-described embodiment of the present invention are 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 types of odors in a toilet space, but for example, as described above, if one odor-causing substance is alkaline and the other odor-causing substance is acidic, then a deodorant capable of deodorizing each of the causative substances would be selected. In this case, the deodorizing function of one selected deodorant and the other deodorant may be reduced or lost due to contact with each other. 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.

[0046] 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.

[0047] (Deodorizing area) Next, the deodorizing areas in the toilet roll 10 of this embodiment will be described. As described above, the first deodorizing area 21 is the area to which the first deodorizing agent is applied, and the second deodorizing area 22 is the area to which the second deodorizing agent is applied. The first deodorizing area and the second deodorizing area may overlap, but in order for the first deodorizing agent and the second deodorizing agent to easily come into contact with the malodorous odor and exert their deodorizing function, it is desirable that there be a large area that does not overlap with each other. In addition, the toilet roll 10 of this embodiment may have a third area on the inner circumferential surface 11A to which no deodorizing agent is applied.

[0048] The deodorizing region may consist of a deodorizer provided in layers on the inner surface of the paper tube, or the deodorizer may be impregnated into the base paper layer 20. A portion of the deodorizer may be formed in layers on the inner surface of the paper tube, while the remainder is impregnated into the base paper layer 20. If the deodorizer is formed in layers, deodorization 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 base paper layer 20, deodorization proceeds relatively gently, and a long-term deodorizing effect can be obtained. When the first and second deodorizers are applied to the inner surface of the paper tube and formed in layers, the thickness of the first and second deodorizer layers is not necessarily limited, but is preferably 0.01 to 2.0 μm, more preferably 0.7 to 1.7 μm, respectively. Within this thickness range, the deodorizing effect can be sufficiently sustained.

[0049] In the toilet roll 10 according to this embodiment, since the inner surface 11A of the paper tube 11 according to this embodiment has a limited area, the wider the first deodorizing region 21 and the second deodorizing region 22, and the narrower the third region, the wider the contact area between the deodorant and the malodorous odor and the wider the area where the deodorant volatilizes, which tends to enhance the deodorizing effect. In particular, for an area of ​​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 malodorous odor and the deodorant. Therefore, the proportion of the area of ​​the inner surface 11A of the paper tube 11 according to this embodiment 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%.

[0050] Furthermore, the larger the area of ​​the region 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 ​​the overlapping region be small. Therefore, the ratio of the area of ​​the region where the first deodorizing region 21 and the second deodorizing region 22 overlap to the area of ​​the inner surface 11B of the paper tube 11 is preferably 10% or less, more preferably 5% or less, and particularly preferably 0%. In other words, it is desirable that the inner surface 11B of the paper tube consists only of the first deodorizing region 21 and the second deodorizing region 22, with no overlapping region.

[0051] 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 first deodorant region 21 that does not overlap with the second deodorant region 22 relative to the area of ​​the inner surface 11A of the paper tube 11 be 20-66%. Also, it is desirable that the percentage of the area of ​​the second deodorant region 22 that does not overlap with the first deodorant region 21 relative to the area of ​​the inner surface 11A of the paper tube 11 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 area of ​​the portion of the first deodorizing region 21 that does not overlap with the second deodorizing region 22 be 20-50%, and that the area of ​​the portion of the second deodorizing region 22 that does not overlap with the first deodorizing region 21 be 50-80% of the area of ​​the inner surface 11A of the paper tube 11, so that the area of ​​the second deodorizing region is greater than or equal to the area of ​​the first deodorizing region.

[0052] Next, the specific arrangement of the deodorizing areas will be explained with reference to Figures 3, 4, and 5. Figure 3 is a spiral paper tube, and Figures 4 and 5 show the spiral paper tube 30 of Figure 3 cut open in the axial direction C and unfolded. The arrangement of the first deodorizing area 21 and the second deodorizing area 22 on the inner circumferential surface 11A of the paper tube 11 is preferably such that, as shown in Figure 4, the first deodorizing area 21 and the second deodorizing area 22 extend in the MD direction of the paper tube base paper 32 constituting the inner circumferential surface 11A, and the first deodorizing area 21 and the second deodorizing area 22 are aligned 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 6, a spiral paper tube can be formed using paper tube base 32 that constitutes the inner circumferential surface 11A, such that the first deodorizing region 21 and the second deodorizing region 22 extend in the MD direction, and the first deodorizing region 21 and the second deodorizing region 22 are aligned in the CD direction, preferably parallel to each other. In this arrangement shown in Figure 4, the ratio of the amount of first deodorizer applied to the second deodorizer, and the area ratio of the first deodorizing region 21 to the second deodorizing region 22 can be adjusted by adjusting the width of the first deodorizing region 21 and the second deodorizing region 22 in the CD direction.

[0053] On the other hand, as shown in Figure 5, it is also desirable to have an arrangement in which, in the paper tube base paper constituting the inner circumferential surface 11A, multiple first deodorizing regions are provided intermittently at intervals in the MD direction, and second deodorizing regions are provided in areas where the first deodorizing regions are not provided to fill the gaps. To achieve this arrangement, for example, as shown in Figure 7, the paper tube base paper 32 constituting the inner circumferential surface 11B can be made in which multiple first deodorizing regions 21 are provided intermittently at intervals in the MD direction, and second deodorizing regions 22 are provided in areas where the first deodorizing regions 21 are not provided to fill the gaps. With this arrangement, the ratio of the amount of first deodorizer to the second deodorizer applied, and the area ratio of the first deodorizing region 21 to the second deodorizing region 22 can be adjusted by adjusting the width of the first deodorizing region 21 and the second deodorizing region 22 in the MD direction.

[0054] The arrangement of the deodorizing areas is not limited to the arrangements shown in Figures 4 and 5 above. Each area 21, 22 can be formed and arranged in an appropriate shape or pattern, such as linear, dotted, circular, or block-like. The total area of ​​the first deodorizing area 21 and the second deodorizing area 22, and the area of ​​each area of ​​the first deodorizing area 21 and the second deodorizing area 22, can be adjusted as appropriate depending on the duration of the deodorizing effect.

[0055] (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.

[0056] As shown in Figure 8, the manufacturing method for the toilet roll 10 of this embodiment mainly comprises a step (A) of manufacturing a long spiral paper tube 30, a log manufacturing step (B) of manufacturing a log using the long spiral paper tube, and a cutting step (C) of cutting the log into individual toilet rolls.

[0057] (Paper tube manufacturing process (A)) In this embodiment, the paper tube manufacturing process, as shown in Figures 8(A) and 9, involves applying glue to one side of one of the two strip-shaped long paper tube bases 31 and 32 unwound from the raw material rolls 31A and 32A using a gluing roll 51. Then, the other long paper tube base 32 is partially overlapped in the width direction with the glued surface of the first long paper tube base 31. The side of the second long paper tube base 32 that does not come into contact with the glued surface faces the mandrel shaft 52, i.e., becomes the outer circumference of the paper tube. Each long paper tube base 31 and 32 is then spirally wound around the mandrel shaft 52 to form a continuous cylindrical portion 29. This cylindrical portion 29 is then cut with a cutter 58 to a width several times or more the width of a kitchen roll to form a long spiral paper tube 30 (also called a spiral-type paper tube). This spiral paper tube has a two-layer laminated structure in which one long paper tube base paper 31 faces the outer surface of the paper tube and the other long paper tube base paper 32 faces the outer surface of the paper tube. In this embodiment, two long paper tube base papers 31 and 32 are spirally wound, but a long paper tube may be formed by spirally winding three or more long paper tube base papers.

[0058] The amount of adhesive 44 applied to the long paper tube base paper 31 is not particularly limited, but is generally 10-25 g / m². 2 To that extent. Furthermore, any adhesive known for use with paper tubes can be used as long as it does not hinder the effects of the present invention, and examples include acrylic adhesives, hot melt adhesives, starch pastes, and polyvinyl alcohol.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] For long-length paper tubes without a deodorizer applied, the deodorizer can be mixed with a binder or solvent to create a deodorizing liquid suitable for coating, which can then be applied. The order in which the first and second deodorizers are applied is not limited. The coating machine used for applying the deodorizing 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 screen ruling of 100 to 400 lines / inch. This allows for uniform and even application of the deodorizer to the area to be coated. While a 100% coverage area (solid printing) is desirable, it is also possible to increase the screen ruling and decrease the coverage area, and this can be combined with print design to enhance aesthetic appeal. Furthermore, drying means such as heaters or heat rolls may be provided downstream of the coating machine to allow for faster drying of the deodorizing liquid. Multiple drying methods may be provided.

[0065] The coating amount of the deodorant liquid can be appropriately adjusted in consideration of the type of deodorant, deodorizing effect, properties of the coating liquid, drying time, etc. If the deodorant is the above acidic deodorant, the coating amount in a preferred embodiment is 1 to 15 g / m 2 is. If it is an alkaline deodorant, the coating amount in a preferred embodiment is 1 to 15 g / m 2 is.

[0066] When providing a first deodorizing region with a first deodorant and a second deodorizing region with a second deodorant on the base paper of the paper tube, for example, for the long base paper of the paper tube 31, 32, a first coating liquid containing the first or second deodorant is applied along the MD direction within a predetermined range from one edge, and then a second coating liquid containing a first or second deodorant different from the deodorant contained in the first coating liquid is applied along the MD direction within a predetermined range from the other edge opposite to the one edge. By adjusting the width in the CD direction of the portion where the first coating liquid is applied and the width in the CD direction of the portion where the second coating liquid is applied, the area of the first deodorizing region and the second deodorizing region and their area ratio can be adjusted.

[0067] Also, as another example when providing a first deodorizing region with a first deodorant and a second deodorizing region with a second deodorant on the base paper of the paper tube, for the long base paper of the paper tube 31, 32, a plurality of lines are continuously or intermittently applied so as to extend in the CD direction with a predetermined interval in the MD direction. Then, the second coating liquid is continuously or intermittently applied so as to extend in the CD direction for each of the intervals left empty. By adjusting the interval where the first coating liquid is not applied and the width in the MD direction of the second coating liquid applied to the intervals left empty, the area of the first deodorizing region and the second deodorizing region and their area ratio can be adjusted.

[0068] (Paper tube base paper manufacturing process) In particular, when using a long paper tube base paper 32 that has been pre-treated with a deodorant, the long paper tube base paper 32 can be manufactured by applying a deodorant solution as follows. That is, as shown in Figure 10, first, the wide paper tube base paper 32W, which is untreated with a deodorant and has a width several times or more than the width of the long paper tube base paper 32, is unwound from a roll of raw material 32a', and the first deodorant is applied using a coating machine 61. The application of the first deodorant can be done by applying a first coating solution, which is a mixture of the first deodorant with an appropriate binder or solvent, using a known printing press or coating machine. The amount of the first coating solution 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.

[0069] After applying the first deodorant in this manner, the second coating liquid is applied by the coating machine 64. This coating process results in a state where both the first and second deodorants are applied, and the roll is wound up to obtain a roll 32a' of wide paper tube base paper. The amount of the second coating liquid 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.

[0070] On the other hand, in the illustrated embodiment, after applying the first deodorant to the wide paper tube base paper 32W, the coated portion of the deodorant liquid is preferably dried via a heater (dryer) 62 and a heat roll 63 before applying the second deodorant in the next step. Furthermore, after applying the second deodorant, the coated portion of the deodorant liquid is preferably dried via a heater (dryer) 65 and a heat roll 66. These drying steps prevent the coating agent from deteriorating due to unintentional contact between the undried first coating liquid and the second coating liquid, and prevent sticking due to wetting in subsequent processes.

[0071] 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.

[0072] The coating machine 61 for applying the first deodorant to the wide paper tube base paper 32W and the coating machine 64 for applying the second 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. 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 the first and second coating liquids, which have high viscosity and contain 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.

[0073] The wide paper tube base paper 32W to which the first and second deodorizers have been applied is cut continuously with a cutter 68 along the MD direction with spacing 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 to which the deodorizers have been applied is wound up. However, the cutting method is not limited to this, and for example, after winding up the wide paper tube base paper 32W to which the first and second deodorizers have been applied, the roll may be cut into sections with a cutter at predetermined intervals in the axial direction of the roll to obtain multiple paper tube base paper rolls 32A on which the long paper tube base paper 32 to which the deodorizers have been applied is wound up. Alternatively, the wide paper tube base paper 32W to which the first and second deodorizers have been applied may be wound up once, then unwound again, and cut continuously with a cutter along the MD direction to wind up multiple paper tube base paper rolls 32A on which the long paper tube base paper 32 is wound up. 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.

[0074] In particular, if we consider the paper tube base paper 32 with the arrangement of the first deodorizing region 21 and the second deodorizing region 22 shown in Figure 6, the application of the first and second deodorizers to the wide paper tube base paper 32W is performed by coating the wide paper tube base paper 32W with the first coating liquid in a coating machine 61 that coats the first coating liquid, continuously or intermittently, so as to extend in multiple rows in the MD direction with predetermined intervals in the CD direction, and then coating the second coating liquid in a coating machine 64 that coats the second coating liquid, continuously or intermittently, so as to extend in the MD direction in each of the aforementioned gaps. This coating process forms a wide paper tube base paper 32W in which the first deodorizing region 21 and the second deodorizing region 22, which extend in the MD direction as shown in Figure 11, are alternately arranged in the CD direction.

[0075] 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 11, for example, so that the first deodorizing region 21 and the second deodorizing region 22 are included, and in particular so that the first deodorizing region 21 and the second deodorizing region 22 are included in one row each, multiple paper tube base papers 32 with the arrangement of the first deodorizing region 21 and the second deodorizing region 22 shown in Figure 6 can be obtained. In the case of the wide paper tube base paper 32W shown in Figure 11, five long paper tube base papers 32 can be obtained.

[0076] On the other hand, if we consider the paper tube base paper 32 with the arrangement of the first deodorizing region 21 and the second deodorizing region 22 as shown in Figure 7, the application of the first and second deodorizers to the wide paper tube base paper 32W is done by continuously or intermittently coating the first coating liquid with the coating machine 61 at predetermined intervals in the MD direction of the wide paper tube base paper 32W, extending in the CD direction. Then, the coating machine 64 coats each of the aforementioned gaps continuously or intermittently, extending in the CD direction. As a result of this coating, the wide paper tube base paper 32W has the first and second deodorizers, which extend in the CD direction as shown in Figure 12, arranged alternately in the MD direction.

[0077] 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 12, multiple paper tube base papers 32 with the arrangement of the first deodorizing region 21 and the second deodorizing region 22 shown in Figure 7 can be obtained. Even with the wide paper tube base paper 32W shown in Figure 12, five long paper tube base papers 32 can be obtained.

[0078] (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.

[0079] 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 to form a 2-ply toilet paper base paper 72 at the overlapping section 81, then perforations are formed by a perforation forming device 82, and finally wound up by a 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 or more plies. Furthermore, in the case of 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.

[0080] In this illustrated embodiment, a perforation 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 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 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.

[0081] 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.

[0082] 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]

[0083] Tests were conducted to determine the deodorizing effect of samples relating to the toilet roll according to the present invention (Examples 1-4) and samples relating to other toilet rolls (Comparative Examples 1-4).

[0084] The paper tube according to Example 1 has a first deodorizing region coated with an acidic deodorizer and a second deodorizing region coated with an alkaline deodorizer 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 0.007 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 second deodorizing zone is 0.007 m². 2Furthermore, the first and second deodorizing areas do not overlap. The area ratio between the first and second deodorizing areas is 20%:80%.

[0085] The paper tube according to Example 2 has a first deodorizing region coated with an acidic deodorizer and a second deodorizing region coated with an alkaline deodorizer 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 0.007 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 second deodorizing zone is 0.007 m². 2 Furthermore, the first and second deodorizing areas do not overlap. The area ratio between the first and second deodorizing areas is 33%:67%.

[0086] The paper tube according to Example 3 has a first deodorizing region coated with an acidic deodorizer and a second deodorizing region coated with an alkaline deodorizer 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 0.007 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 second deodorizing zone is 0.007 m². 2 Furthermore, the first and second deodorizing areas do not overlap. The area ratio between the first and second deodorizing areas is 50%:50%.

[0087] The paper tube according to Example 4 has a first deodorizing region coated with an acidic deodorizer and a second deodorizing region coated with an alkaline deodorizer 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 0.007 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 second deodorizing zone is 0.007 m². 2 Furthermore, the first and second deodorizing areas do not overlap. The area ratio between the first and second deodorizing areas is 67%:33%.

[0088] 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.

[0089] 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.

[0090] The paper tube in Comparative Example 3 has only an adsorption-type deodorizing region formed on its inner surface by applying an adsorption-type deodorizer. The adsorption-type deodorizer mainly consists of inorganic compounds containing silica alumina and amphoteric oxides, and operates at a pH of 6.5 to 10.5. The coating amount is 2.0 g / m². 2 The area of ​​the adsorption and deodorization zone is 0.015 m². 2 Regarding the amount of coating, since adsorbent deodorants are more expensive than chemical deodorants that achieve their deodorizing effect through neutralization reactions, such as acidic and alkaline deodorants, the amount of coating was adjusted to be roughly equivalent in cost.

[0091] The paper tube in Comparative Example 4 is a blank sample that has not been treated with a deodorant.

[0092] 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.

[0093] 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.

[0094] 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

[0095] The results are shown in Table 1.

[0096] [Table 1] The embodiment of the present invention, which has a first deodorizing region and a second deodorizing region, was effective against ammonia and hydrogen sulfide, respectively. In particular, it showed superior ammonia deodorizing effect compared to Comparative Example 1, which used only the first deodorizing region with an acidic deodorizer, and superior hydrogen sulfide deodorizing effect compared to Comparative Example 2, which used only the second deodorizing region with an alkaline deodorizer. Furthermore, it showed superior deodorizing effects against ammonia and hydrogen sulfide compared to Comparative Example 3, which used only the second deodorizing region with an adsorbent deodorizer having deodorizing effects derived from both acid and alkali. It was confirmed that a high deodorizing effect can be achieved by using an acidic deodorizer and an alkaline deodorizer in combination, such as by creating a first deodorizing region and a second deodorizing region. It was also found that the division of the region into the first and second deodorizing regions had a greater influence on the deodorizing effect than the amount of deodorizer applied. In particular, it was found that when the first deodorizing region was the region to which the acidic deodorizer was applied and the second deodorizing region was the region to which the alkaline deodorizer was applied, the effect was higher when the area of ​​the second deodorizing region was larger than that of the first deodorizing region. In Comparative Example 1, a slight increase in the hydrogen sulfide deodorization rate was observed over time, and in Comparative Example 2, a slight increase in the ammonia deodorization rate was observed over time. However, compared to Comparative Example 4, 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 deodorant in a state where re-release is possible. [Explanation of Symbols]

[0097] 10...Toilet roll, 11...Paper tube, 11A...Inner surface of paper tube, 12...Toilet paper, L1...Width of toilet roll, L2...Diameter of toilet roll, L3...Inner diameter of paper tube, 20...Base paper layer, 21...First deodorizing area, 22...Second deodorizing area, 30...Long paper tube, 31,32...Long paper tube base paper, 32W...Wide paper tube base paper, 31A,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, 68...Cutter, 70...Log, 71...Toilet paper base paper, 71A...Roll, 72...2-ply toilet paper base paper, 81...Overlapping section, 82...Perforation 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 first deodorizing region to which a first deodorizing agent is applied to chemically deodorize the first odor in the toilet space, and a second deodorizing region to which a second deodorizing agent is applied to chemically deodorize a second odor in the toilet space that is different from the first odor. The first deodorizing region and the second deodorizing region have areas that do not overlap with each other. A toilet roll characterized by the following features.

2. The first odor is an odor generated from an alkaline substance, and the second odor is an odor emitted from an acidic substance. The toilet roll according to claim 1.

3. When the first deodorant and the second deodorant come into contact with each other, the deodorizing function of at least one of them is reduced or lost. The toilet roll according to claim 1.

4. The first deodorant is an acidic deodorant, and the second deodorant is an alkaline deodorant. The toilet roll according to claim 1 or 3.

5. The toilet roll according to claim 1, wherein the ratio of the area of ​​the region in which the first deodorizing region and the second deodorizing region do not overlap with each other to the area of ​​the inner surface of the paper tube is 80% or more.

6. The toilet roll according to claim 1, wherein the percentage of the area of ​​the portion of the first deodorizing region that does not overlap with the second deodorizing region, relative to the area of ​​the inner circumferential surface of the paper tube, is 20 to 67%, and the percentage of the area of ​​the portion of the second deodorizing region that does not overlap with the first deodorizing region is 33 to 80%.

7. 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 first deodorizing region to which a first deodorizing agent is applied to chemically deodorize the first odor in the toilet space, and a second deodorizing region to which a second deodorizing agent is applied to chemically deodorize the second odor. A paper tube characterized in that the first deodorizing region and the second deodorizing region have regions that do not overlap with each other.

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