JP3504563B2 - Toilet paper roll - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a toilet paper roll having a thick tube core which can be mounted on a thick shaft portion of a toilet paper roll holder for general households, in which rewinding noise is remarkably reduced. The present invention relates to a toilet paper roll that can take good measures to remove dust from the core, can manufacture a thick tube core at low cost, and can also reduce the manufacturing cost of the toilet paper roll.

[0002]

2. Description of the Related Art In a conventional general toilet paper roll, a toilet paper and a paper tube core are separately provided, and the core is made of cardboard cardboard material and has a diameter of about 3.8 cm. It is a cylindrical body of about 4.5 cm. On the other hand, in recent years, the above-mentioned toilet paper and a so-called coreless toilet paper roll having a part on the center side of the roll around which the toilet paper is wound as a core have been researched and developed and are on the market.

There are two types of coreless illette paper rolls, one of which has a particularly small hole inside diameter at the center of the roll and the other of which has a large hole inside diameter which can be mounted on the thick shaft portion of a toilet paper roll holder for general household use. There is. The type with a small hole inner diameter, because the shaft part of the holder has a small diameter, it cannot be used for the thick shaft part of the toilet paper roll holder used in general households, It was unsuitable.

[0004]

SUMMARY OF THE INVENTION The coreless millet paper roll has a small hole inner diameter at the center of the roll.
Regardless of size, all of them were wound almost hard from the beginning to the end, and none were wound softly. This is because, in order to form a part of the center of the roll around which the toilet paper is wound as the core, it is essential to wind the toilet paper from the beginning to the end (see Japanese Utility Model Publication No. 6-47356). For this reason, the general market or users have been demanded to develop a softly wound soft type coreless illette paper roll.

The soft type coreless illette paper roll developed on the basis of these demands is wound in a substantially soft manner as a whole, and the toilet paper on the roll center side at the beginning of the winding is adhered with an adhesive to form a tubular core. Parts are formed. Although it is not specified as a soft type, the presence of a bonded tubular core portion is disclosed in Japanese Patent Laid-Open No. Hei 7 (1999) -1999.
No. 2395. The tubular core portion is formed by bonding the portion of the toilet paper, which is softly rolled, with an adhesive, but none of them is formed orderly. The outer appearance of the tubular core portion is generally in an irregular shape at the inner diameter of the hole so that it is in a damaged state at the beginning of winding, and it is difficult to fit in the market. It was technically difficult to form the roll center part of the soft type coreless illette paper roll at the beginning of winding in an orderly manner. Furthermore, the manufacturing machine for manufacturing this soft type coreless illette paper roll is a special-purpose machine and has a drawback that it is extremely expensive as a toilet paper roll product.

In recent years, women and the like tend to be extremely reluctant to generate a rewinding sound such as rattle when using a toilet paper roll. For this reason,
It is required to develop the rewinding sound when using the toilet paper roll so that the rewinding sound does not occur or has an extremely low rewinding sound.

In the toilet paper rolls on the market, the treatment of the core of the paper tube, which is the core at the center of the roll, is particularly problematic after use. That is, since the core is made of cardboard made of cardboard, it cannot be easily crushed by women and children, and it has a drawback that it is bulky to be thrown away as garbage. Furthermore, in public toilets, etc., the paper tube core of the toilet paper roll is often thrown into the toilet bowl, which often causes clogging of the toilet.The applicant also developed the coreless type to prevent the paper tube core. There is.

[0008]

Therefore, as a result of intensive studies, the inventor of the present invention has found that the present invention is about 30 (g / m ² ) to about 4 cm in diameter and outside. 100
(G / m ² ) A toilet paper roll made of a thin paper core made of a thin paper different in material from the toilet paper, and the toilet paper wound around the thick core substantially softly from the beginning to the end. Therefore, by using this by attaching it to the thick shaft part of a toilet paper roll holder for general household use, the rewinding noise is significantly reduced, the dust disposal measure of the thick tube core can be improved, and the thick tube core The present invention solves the above-mentioned problems by making it possible to manufacture the toilet paper roll at a low cost and, in turn, the manufacturing cost of the toilet paper roll.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings. In the first embodiment, as shown in FIGS. 1 and 2, the toilet paper roll has a diameter of about 4 cm.
The inner and outer thick tube cores 1 are made of thin paper, and the toilet paper 2 is wound around the thick tube core 1 from the beginning to the end in a substantially soft manner. 1 (A), (C) and FIG. 2 (A)
Although the thickness of the thick core 1 is thicker than the thickness of the toilet paper 2, it is shown only as a line because it is made of thin paper. This also applies to the second and third embodiments. Figure 1
(B) particularly indicates that the paper thickness of the thick core 1 is thicker than the paper thickness of the toilet paper 2. The toilet paper roll is a completed product obtained by rolling the toilet paper 2 and the toilet paper 2 has an appropriate length including a rolled state or a non-rolled state. As shown in FIG. 1 (A), the finished toilet paper roll may be sold while maintaining a circular cross section, and as shown by the chain line in FIG. 1 (C), it is a flat ellipse because it is soft as a whole. It may be sold in the form of a sheet. Further, FIG. 2C is a partial schematic view of FIG. 2A, and shows that the entire height H ₀ (when no load is applied) around which the toilet paper 2 is wound is wound substantially softly. Is. That is, a gap is formed between the wound and laminated toilet papers 2 and 2.

The thick core 1 is made of thin paper having an inner diameter of about 4 cm inside and outside (actually, a diameter of about 3.8 cm to about 4.5 cm), and is usually about 30 (g / m ² ) (1 m It is manufactured by stacking a plurality of thin papers having a weight of paper per ² g) to about 100 (g / m ² ) so as to be twisted and interleaving with an adhesive.
Since it is not possible to measure with the weight of ordinary paper like this,
The weight per one of the width length (about 11 cm) of one toilet paper roll of the thick core 1 having the inner diameter of about 4 cm and the outer diameter was measured. According to this, about 1 including the weight of glue etc.
(G / piece) to about 3 (g / piece). Examples of the material of the thin paper of the thick tube core 1 include water-soluble no-size paper and water-insoluble size paper. The toilet paper 2 is usually about 16 (g / m ² ) to about 23 (g / m ² ).
It is a no-size paper of the weight of. The inside and outside of the diameter of about 4 cm includes the diameter of about 3 cm to about 5 cm. The material of the thick core 1 is generally different from the material of the toilet paper 2. Here, the thick tube core 1 is made of thin paper, but is about 70 (g / m ² ) to about 100.
(G / m ² ) is generally not a concept of thin paper. Particularly, in the present specification, a cardboard as a material for a commercially available paper tube core, that is, about 200 (g / m ² ) of a cardboard is usually used.
To the weight of about 220 (g / m ² ), the thick tube core 1 is usually high quality paper such as about 30 (g / m ² ) to about 100 (g / m ² ).
Is called thin paper.

In the second embodiment, as shown in FIG. 3, a toilet paper roll is composed of a thin paper core 1 made of thin paper with a diameter of about 4 cm, and a toilet paper 2 is hard for the first few windings and then to the end. It is a toilet paper roll that is almost soft and is wound as a whole. The phrase “wound as a whole as a whole” is equivalent to the above-mentioned “wrapped as a softness from the beginning to the end”. Further, FIG. 3C is a partial schematic view of FIG. 3A, and at the total height H ₀ around which the toilet paper 2 is wound (when no load is applied), the portion H _{2 that} is tightly wound and the portion H _{2 that} is substantially soft are wound. It shows the wound portion H ₃ . H ₂ + H ₃ = H ₀ .

In the third embodiment, the toilet paper roll comprises a thin paper core 1 having a diameter of about 4 cm and made of thin paper.
The toilet paper roll is composed of a toilet paper 2 wound around the thick tube core 1 so that a part of the wound roll is hard, except for the first roll, and is generally soft, and is wound as a whole. Specifically, as shown in FIG. 4, the last few turns are wound tightly, and all other positions are turned softly. Even such a winding is “wound as a whole as a whole” and is equivalent to the above-mentioned “wrapped as a whole from the beginning to the end”. In addition, although not shown, some of the intermediate positions of the toilet paper roll may be wound tightly and all other positions may be wound substantially soft. Even in this case, it is "wound substantially softly as a whole" and is equivalent to the above-mentioned "wrapped substantially softly from the beginning to the end". Also, FIG.
FIG. 4C is a schematic view of a part of FIG. 4A, showing a portion H ₄ wound substantially softly and a portion tightly wound at a total height H ₀ (without load) around which the toilet paper 2 is wound. It represents H ₅ . H ₄ + H ₅
= H ₀ .

[0013]

Example 1 In the present specification, "substantially softly wrapped" means a toilet paper roll.
When the measuring weight 21 having a load of 13 kg is applied, the load change rate is about 36% or more. This was based on the experiment described below.

Load change rate = (H ₀ −H ₁ ) / H ₀ × 100 H ₀ : Height without load H ₁ : Height test with load of 13 kg of measuring weight 21 As shown in (B), the measuring shaft 20 is inserted into the thick core 1 of the manufactured toilet paper roll of the present invention or the paper core or the toilet paper roll core of a commercially available toilet paper roll, and the thick cylinder Set so that the maximum upper position of the outer circumference of the core 1 etc. becomes 0 height,
This was taken as the reference height position, and the height of the unloaded toilet paper roll to the maximum apex position on the outer circumference of the toilet paper 2, that is, the height when no load was applied was defined as H ₀ . Further, a measuring weight 21 having a weight of 13 kg was placed on the unloaded toilet paper roll, and at this time, the gap between the toilet paper 2 was narrowed by the measuring weight 21 and the height was reduced. At this time, the height to the maximum top position on the outer circumference of the toilet paper 2, that is, the height when a load of 13 kg was applied was defined as H ₁ .

In the experiment, as the measurement data of the rate of change of load,
The product of the present invention (see FIG. 10), and a center-wrapped softly wound core soft core A (see FIG. 11) and core soft core B (see FIG. 12) that are appropriately selected based on the feel.
And a surface-rolled medium-hardness cored ordinary winding (see FIG. 13), a slightly hard wound cored hard winding (see FIG. 14), and a hard wound coreless hard winding (see FIG. 15). Then, H ₀ and H ₁ of these plural samples were measured. The measured data are shown in FIGS. 10 to 15, and only the maximum load change rate, average change rate, and minimum change rate are shown in FIG.
(A). When this is made into a comparison graph as shown in FIG. 9C, it becomes as follows.

That is, "hardly wrapped" means
The load change rate is 0% to about 9%, "winded slightly hard" means that the load change rate is about 9% to about 21%, and "wrapped to an ordinary hardness" means the load The rate of change is about 21% to about 36%, "slightly wrapped" means a load change rate of about 36% to about 49%, and "softly wrapped" means a load change rate of about 49%. % Or more. As described above, "substantially softly wrapped" includes "softly wrapped" and "slightly softly wrapped". Therefore, "substantially softly wrapped" as described above means at a load of 13 kg. , The load change rate is about 36% or more. This value may change about 10% inside or outside depending on temperature, humidity, atmospheric pressure, etc. under the condition that the toilet paper roll is placed.

Further, (H ₀ −H ₁ ) according to the above equation is
It also represents the amount of void between the laminated toilet papers 2 and 2 in the toilet paper roll,
It can be said that the rate of change in load according to the above equation is almost equal to the porosity. Therefore, when the porosity is about 36% or more,
It can be said that "it was wrapped around softly." The point to be noted here is when the load is 13 kg in the table. For example, in the 18 kg weight 21 for measurement, the value of (H ₀ −H ₁ ) becomes large, so that the load change rate becomes large regardless of the winding type, and about 40% or more of the load change rate is “ For example, in the measuring weight 21 with a load of 7 kg, the value of (H ₀ −H ₁ ) becomes small, so the load change rate becomes small regardless of the winding type. About 30% or more of the load change rate is "substantially softly wrapped".

[0018]

Example 2 Further, in the experiment for measuring the unwinding sound of the toilet paper roll of the present invention product shown in FIG. 16, the toilet paper roll of the present invention product has a conventional ordinary paperboard core. It is clearly much quieter than toilet paper rolls. In a specific experiment, the thick core 1 relating to the product of the present invention is made of thin paper having an inner diameter of about 3.8 cm, and the weight of each toilet paper roll length (about 11 cm) is: About 1.
It is 6 (g / piece), which is formed by appropriately twisting and stacking two thin paper sheets having a weight of about 50 (g / m ² ). As the material for the thin paper of the thick core 1, water-soluble no-size paper was used. As a conventional product, the inner diameter is about 3.
A so-called cored ordinary roll toilet paper roll was used in which the hardness was normally wound on a paper tube core made of 8 cm cardboard. Further, both the toilet paper roll of the present invention manufactured by the "softly wrapped" toilet paper 2 and the conventional cored ordinary roll of toilet paper roll have an outer diameter of about 110 mm, and are used for general household use. It is attached to the thick shaft portion 10 of the one-touch type toilet paper roll holder for use, the lid of the toilet paper roll holder is removed to eliminate the contact sound between the lid and the toilet paper, and the winding generated when the toilet paper is pulled out. The return sound was measured. About 50 cm, 1 m from the toilet paper roll holder
A sound collecting sensor was installed at a position of 1.5 m for measurement. At this time, even if the speed at which the toilet paper is rewound is constant, the toilet paper roll is rewound from the outer peripheral side. Since the speed gradually increased, measurement was performed at three locations, the outer peripheral portion, the intermediate portion, and the central portion (on the side of the thick cylinder core).

As shown in the table of FIG. 16, 12d is provided at any of the outer peripheral portion, the intermediate portion, and the central portion (on the side of the thick cylinder core).
B (decibels) to 17 dB also became quiet. In particular, in a toilet or the like, it is usually 1 m or more away from other people, and when these two are averaged, the conventional cored ordinary winding is about 65 dB, and the product of the present invention is about 53 dB. there were. Although only 12 dB is small, dB is the logarithm of the loudness of the sound, and the difference of 10 dB is 10 times different in the loudness of the sound. That is, the difference of 12 dB is about 16 times as loud as the sound level, and about 2 dB at 13 dB.
0 times, about 25 times at 14 dB, about 32 times at 15 dB,
There is a marked difference between 16 dB and 40 times, and 17 dB and 50 times. FIG. 17 is a graph of the table of FIG. 16, and the difference in the unwinding sound of the toilet paper roll between the conventional product and the product of the present invention is clear. Furthermore, FIG.
As shown in FIG. 8, referring to a comparison table of noise level and familiar sounds, about 65 dB is an intermediate position between normal conversation and noisy office or telephone sounds. Of about 53 dB is a sound close to that of a quiet office, and the difference in the size is extremely remarkable from the viewpoint of the size of only the sound.
For this reason, when the product of the present invention is used, the rewinding sound of the toilet paper roll becomes extremely small, and even a woman can feel free to use it without anxiety.

[0020]

[Embodiment 3] FIG. 19 is a compression load displacement diagram of a paper tube (paper tube core, thick tube core 1 of the present invention, etc.) of a toilet paper roll. The thick tube core 1 of the product of the present invention has an inner diameter of about 3.8.
cm, and the weight per one roll of the toilet paper roll (about 11 cm) is 1.0 (g / roll), 1.
6 (g / piece), 2.0 (g / piece), 2.4 (g / piece),
3.0 (g / book) was used. In addition, the conventional cardboard paper tube cores used are 5.9 (g / piece) and 6.4 (g / piece), and the thin paper of the thick tube core 1 is made of a water-soluble no-size paper. I used paper. 1.0 (g / piece), 1.6
(G / piece), 2.0 (g / piece), 2.4 (g / piece),
3.0 (g / piece) is about 30 (g / m ² ) and about 5 respectively
0 (g / m ² ), about 65 (g / m ² ), about 80 (g / m ² ),
Two sheets of thin paper having a weight of about 100 (g / m ² ) are appropriately twisted and stacked. Furthermore, 5.9 (g /
Book) and 6.4 (g / book) are about 200 (g / book).
m ² ), ^two cardboards having a weight of about 220 (g / m ² ) are appropriately twisted and stacked. In this experiment, a displacement chart of a paper tube compression load of a toilet paper roll was obtained when a load was applied to a thick tube core 1 or a paper tube core having an inner diameter of about 3.8 cm and the height changed from 0 to 15 mm. .

As a result, as shown in the table of FIG.
With the thick tube core 1 of the present invention of 0 (g / piece), 6.4 (g / piece)
It can be pressed with a pressure (N) of about 1/20 of that of the conventional paper tube core made of cardboard. As described above, it is possible to easily crush the thick tube core 1 with extremely little force as compared with the conventional cardboard paper tube core (see FIG. 8). Further, from FIG. 19, about 3 (g / piece) of high-quality paper is considered to be in the category of the thin tube core 1 made of thin paper of the present invention. In addition, the weight of the thick core 1 is approximately 1 to 1 depending on the amount of glue.
There is a case where high-quality paper, which changes by 20% and is about 4 (g / piece), is also included in the thin paper core 1 of the present invention.

[0022]

The above-described product of the present invention is mounted on the thick shaft portion 10 of the toilet paper roll holder for use. The above-mentioned "substantially softly wrapped from the beginning to the end" or "substantially softly wrapped as a whole" means that the amount of voids between the laminated toilet papers 2, 2 in the toilet paper roll is increased. When the toilet paper attached to the thick shaft portion 10 of the toilet paper roll holder is pulled out due to the increase in the void amount, the toilet paper roll rotates, and in particular, the thick tube core 1 and the toilet paper roll holder are Even if the thick shaft portion 10 of the thick paper comes into irregular contact with the unwinding sound of the toilet paper roll, the outer periphery of the thick tubular core 1 is "wound substantially softly from the beginning to the end" or "whole". Was wrapped around as soft as
The toilet paper 2 is present, and the sound is not transmitted to the outside due to the gaps between the laminated toilet papers to mute or reduce the sound [see (a) part of FIG. 5 (A) and FIG. 5 (b)]. ].

Further, the thick cylinder core 1 is made of thin paper, and there is a toilet paper 2 "which is substantially softly wound from the beginning to the end" or "generally softly wound as a whole". Therefore, when the toilet paper 2 is rewound (pulled), one portion of the thick core of the toilet paper roll becomes elliptical [Fig. 5 (A)].
As shown in FIG. 6 (A), at the present, the shaft side point Pc ₂ and the cylinder side point Po ₂ where the thick shaft portion 10 and the thick cylinder core 1 are in close contact with each other,
There are a shaft side point Pc ₁ and a cylinder side point Po ₁ which are not in contact with each other, and at the next moment, the shaft side point Pc ₁ and the cylinder side are in contact with the shaft side point Pc ₂ and the cylinder side point Po _2. The point Po ₁ also comes into contact with each other, and comes into contact as a surface when it is rotated. As described above, because of the softness, no sound is produced or a very small sound is produced when the surface contacts.
However, as shown in FIG. 7, in the case of the cardboard tube core a of the conventional toilet paper roll, the thick shaft portion 1 is currently used.
If there is a point that is in contact with 0, and a shaft side point Pc and a cylinder side point Po that are not yet in contact, at the next moment, the shaft side point Pc and the cylinder side point Po will contact each other. However, the points that have been in contact with each other are separated from each other, and in the rotating state, they are in point contact, and under this point contact state, the rewinding sound of the toilet paper roll is largely generated. Such a defect was solved by the operation of the present invention by the surface contact shown in FIG.

As described above, in the product of the present invention, the unwinding sound of the toilet paper roll can be remarkably reduced because of the increase in the void amount between the toilet papers 2 and 2 and the surface contact on the soft surface. Because they act synergistically.

[0025]

According to the invention of claim 1, the diameter is about 4 cm.
Inside and outside, a thick paper core 1 made of a thin paper and made of a material different from that of the toilet paper 2 with a weight of about 30 (g / m ² ) to about 100 (g / m ² ), and the thick cylinder core 1 from the beginning to the end Since it is a toilet paper roll consisting of the toilet paper 2 wound substantially softly, the thick shaft portion 10 of the toilet paper roll holder for general households is used.
Firstly, the rewinding sound can be remarkably reduced, secondly, the dust-disposal countermeasure of the thick cylinder core 1 can be favorably performed, and thirdly, the thick cylinder core 1 can be manufactured at low cost, and by extension, The manufacturing cost of toilet paper rolls can be reduced,
Moreover, the product value can be significantly improved as compared with the toilet paper roll in which all the cores are softly wound.

Among these effects, the effect capable of remarkably reducing the rewinding sound will be described in detail. The toilet paper roll of the present invention is attached to the thick shaft portion 10 of a toilet paper roll holder for general households, etc., and the thick shaft portion 10 and the thick cylinder core 1 make contact while rotating, and a contact sound or a rubbing sound is generated from there. And the like, since the thick tube core 1 is made of thin paper, the thick tube core 1 rotates and makes surface contact so that it fits, and the outer periphery of the thick tube core 1 has a "generally softly wound" toilet paper 2 Exists, and the sound is not transmitted to the outside due to the existence of the gap between the laminated toilet papers 2 and 2, so that the sound is muted or reduced. This can be clearly demonstrated in the experiments of FIGS. 16 and 17. In this experiment, there is a reduction in the rewinding sound of about 12 dB to about 17 dB, but in reality, it can be made almost inaudible. By this, in particular,
The greatest advantage is that it can eliminate the rewinding noise of rattling and the like during the use of toilet paper in the toilet, and can provide a quiet toilet paper roll that can be used with peace of mind, especially for women.

Further, since the thick core 1 is made of thin paper which is different from the toilet paper 2 in weight of about 30 (g / m ² ) to about 100 (g / m ² ), the conventional cardboard is used. Since the strength is extremely weak unlike the paper core made of paper, the thick cylinder left on the thick shaft portion 10 of the toilet paper roll holder for general households after using the toilet paper roll even for women and children. Easily crush core 1 (Fig. 8
(Refer to), there is an advantage that household waste can be reduced and can be disposed of as general waste.

Furthermore, the thin cylinder core 1 made of thin paper as described above.
Therefore, in comparison with the conventional cardboard-made paper tube core, the paper thickness is thin and the amount of paper is small, so that the unit price of the tube core itself can be reduced. This has the advantage that the toilet paper roll as a whole can be made cheaper.

Although soft type coreless illette paper rolls exist in some markets, the glued cylinder core has a damaged appearance and is difficult to penetrate into the general public. Or, the manufacturing machine for manufacturing this soft type coreless illette paper roll is a special machine with special specifications, and there was a drawback that it was extremely expensive as a toilet paper roll product, but in the present invention, in appearance it is usually It has substantially the same shape as that of the paper cylinder core, and its product value can be remarkably improved, and, as described above, not only the sound deadening effect and good measures against dust but also the effect of reducing the unit price of the product can be achieved.

Further, in the invention of claim 2, it is made of a thin paper having a diameter of about 4 cm and a weight of about 30 (g / m ² ) to about 100 (g / m ² ) and made of a material different from that of the toilet paper 2. The toilet paper roll comprising a thick tubular core 1 and the toilet paper 2 wound around the thick tubular core 1 after being hardened for the first few turns and then substantially soft until the end, and the toilet paper roll 2 being wound as a whole. Has the same effect as. According to the second aspect of the present invention, in particular, even if the thick cylindrical core 1 is wound to be soft until the end after being hardened for the first few turns, it is wound as a whole as a whole from the beginning of claim 1. The structure is substantially the same as when wound to the end, and the same effect is obtained.

Further, in the invention of claim 3, the diameter is about 4 cm.
Inside and outside, a thick tubular core 1 made of a thin paper and having a weight of approximately 30 (g / m ² ) to approximately 100 (g / m ² ) and different from the toilet paper 2, and the thick tubular core 1 except the first The same effect as in claim 1 can be obtained by using the toilet paper roll including the toilet paper 2 wound so as to be substantially soft after being hardened for a part of a few rolls and substantially soft as a whole. In the invention of claim 3 as well, particularly, even if some of the windings other than the first one are hard and wound substantially soft after being wound around the thick tubular core 1, it is equivalent to being substantially softly wound from the beginning to the end of claim 1. With this configuration, the same effect can be obtained.

[Brief description of drawings]

1A is a perspective view of a toilet paper roll according to a first embodiment of the present invention, FIG. 1B is a partially enlarged perspective view of FIG. 1A, and FIG. 1C is a side view of FIG. Imaginary diagram that can be flat elliptical

FIG. 2A is a side view of the first embodiment of the present invention. (B) is a partially enlarged view of (A) (C) is a partial schematic diagram of (A)

FIG. 3A is a side view of a second embodiment of the present invention. (B) is a partially enlarged view of (A) (C) is a partial schematic diagram of (A)

FIG. 4A is a side view of a third embodiment of the present invention. (B) is a partially enlarged view of (A) (C) is a partial schematic diagram of (A)

FIG. 5A is a state diagram in which the present invention is rewound, and FIG. 5B is an enlarged cross-sectional view of (A) in (A) in which a sound source disappears or decreases.

6 (A) and (B) are state diagrams of the center of the toilet paper roll in the process of rewinding the present invention.

7 (A) and (B) are state diagrams of the center of the toilet paper roll in the process of rewinding the conventional product.

8A is a state diagram of a step of crushing a normal thick tube core of the present invention, FIG. 8B is another state diagram of crushing a thick tube core of the present invention, and FIG. 8C is a state diagram of the thick tube core of the present invention. Another crushed state diagram

FIG. 9 (A) is a load change rate table for each winding method. (B) Schematic diagram of the measuring method for measuring the rate of change of load (C) is a comparison graph of the load change rate for each winding type

FIG. 10 is a measurement data table of the load change rate of the product of the present invention.

[Fig. 11] Measurement data table of load change rate of a slightly soft toilet paper roll

FIG. 12: Measurement data table of load change rate of another soft toilet paper roll

FIG. 13 is a measurement data table of the load change rate of a normal hardness toilet paper roll.

FIG. 14: Measurement data table of load change rate of slightly hard toilet paper roll

FIG. 15: Measurement data table of load change rate of hard toilet paper roll

FIG. 16: Comparison table of measurement of rewinding sound of toilet paper roll

FIG. 17: Comparison graph of rewound sound measurement of toilet paper roll

FIG. 18: Comparison table of noise level and familiar sounds

FIG. 19 is a compression load displacement diagram of a paper tube of a toilet paper roll comparing the product of the present invention with a conventional product.

[Explanation of symbols]

1 ... Thick tube core 2 ... Toilet paper

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) A47K 10/16

Claims (3)

(57) [Claims] 1. A diameter of about 4 cm and an outside diameter of about 30 (g / m ² )
Weighing about 100 (g / m ² ) is toilet paper
A toilet paper roll, comprising a thick paper core made of a different material and a thin paper core, and the toilet paper wound around the heavy cylinder core substantially softly from the beginning to the end. 2. A diameter of about 4 cm and an outside diameter of about 30 (g / m ² )
Weighing about 100 (g / m ² ) is toilet paper
A toilet paper roll comprising a thick paper core made of a different material and a thin paper core, and the toilet paper wound around the thick cylinder core so that the first few rolls are hard, and then the whole is substantially soft, and is generally soft. . 3. A diameter of about 4 cm and an outside diameter of about 30 (g / m ² )
Weighing about 100 (g / m ² ) is toilet paper
Toilet characterized by comprising a thick tube core made of thin paper of different material , and the toilet paper wound around the thick tube core so as to be soft after being hardened for a part of several rolls except the first, and generally soft as a whole. Paper roll.