JP7669061B2 - toilet paper - Google Patents

Description

This disclosure relates to toilet paper that has markings that indicate the position of perforations.

Some toilet paper rolls, which are made by winding a strip of paper, have perforations at regular intervals along the length of the strip of paper to make it easier to separate the strip of paper that is pulled out from the toilet paper.
Because standard toilet paper is manufactured to be a uniform white color, it is difficult for the naked eye to quickly spot where the perforations are located, and as a result, the paper can tear in places where there are no perforations.
Therefore, there is toilet paper that is colored to make it easier to find the location of the perforations.

For example, Japanese Patent Application Publication No. 2006-236663 discloses colored toilet paper with a colored portion around a cut line (perforation) on a strip of paper. This colored portion includes a strip of colored portion that is arranged to include the cut line, and dot-shaped colored portions that are arranged above and below the cut line and parallel to the cut line. Japanese Patent Application Publication No. 2006-236663 also discloses toilet paper with blue lines, letters, or patterns printed parallel to the perforations.

Also disclosed is toilet paper that has a mark and a through hole so that even the visually impaired and elderly can easily find the position of the perforation (Patent Document 3). This toilet paper is configured such that, for example, a green-colored mark is printed at the position of the perforation, and a notch or through hole is provided at the position of the perforation, so that a certain length of paper can be pulled out by using the notch or through hole as a guide.

Registered Utility Model No. 3140786 JP 2012-130636 A Registered Utility Model No. 3093320

Conventional toilet paper has markers near the perforations, so it is possible to grasp the approximate location of the perforations, but it is difficult to recognize the exact location of the perforations. If a user tears the toilet paper at a position that is different from the perforations, the tear will not follow the perforations, and the toilet paper will not be of the desired size or shape.

In addition, since the conventional toilet paper has lines or multiple characters printed around and along the perforations as described above, a considerable amount of ink is applied to the paper. When the ink is applied in this manner, a considerable amount of moisture penetrates the ink-applied portion, weakening the fiber bond. Therefore, a process of drying the applied ink is required before winding the strip-shaped paper into a roll. Therefore, it is necessary to dry the strip-shaped paper between both ends in the width direction. In addition, when a notch or a through hole is provided at the position of the perforation, it is necessary to provide the manufacturing device with a cutter for forming the notch or the through hole in addition to the perforation cutter. For these reasons, it is difficult to reduce costs in the manufacture of toilet paper with marks indicating the positions of the perforations, and the selling price is high.

This disclosure was made in consideration of the above problems, and aims to provide toilet paper that allows the precise position of the perforations to be identified.

The toilet paper disclosed herein is a toilet paper made by winding a strip of paper into a roll, and is characterized in that it has perforations extending in the width direction of the roll and marks formed on the perforations to indicate the position of the perforations, and that the marks are formed on both ends of the paper in the width direction.

The toilet paper disclosed herein is also characterized in that the markings are colored.

The toilet paper disclosed herein is also characterized in that overlapping pieces of paper are adhered together by the mark, and when the paper is pulled out of the roll-shaped toilet paper and the pieces of paper separate, resistance is generated by the adhesive force of the mark.

The toilet paper disclosed herein is also characterized in that the markings are formed only on both ends of the paper in the width direction.

The toilet paper disclosed herein is also characterized in that the markings are formed on both edges of the paper in the width direction.

The manufacturing method of toilet paper according to the present disclosure includes a first step of forming perforations extending in the width direction of the strip of base paper pulled out from a base paper roll, a second step of applying a predetermined liquid to the positions of the base paper where the perforations are formed, and a third step of rolling up the base paper to which the predetermined liquid has been applied, and then cutting the base paper into a plurality of roll-shaped toilet paper sheets, the second step being characterized in that it forms markers by applying the predetermined liquid to each position that will be on both ends in the width direction of the toilet paper when the toilet paper is formed by cutting in the third step.

The toilet paper manufacturing method according to the present disclosure is also characterized in that in the second process, the specified liquid is dispensed from multiple nozzles arranged in the width direction of the base paper, and the specified liquid is applied to each of the positions.

The toilet paper manufacturing method according to the present disclosure is also characterized in that in the second process, the specified liquid is used to color the base paper with any color.

The toilet paper disclosed herein has markers formed on the perforations and on both ends of the strip of paper, allowing users to easily identify the position of the perforations.

The toilet paper manufacturing method disclosed herein reduces manufacturing costs and produces toilet paper with easily identifiable perforation positions.

FIG. 1 is an explanatory diagram showing a schematic configuration of a toilet paper manufacturing device that manufactures the toilet paper according to the present disclosure. 1 is an explanatory diagram showing a portion equipped with a mark forming nozzle for forming a mark on the stencil paper transported from the stencil paper supply section to the winding section; FIG. FIG. 2 is an explanatory diagram showing a roll produced by winding the base paper by a winding section. FIG. 1 is a perspective view showing the appearance of toilet paper according to the present disclosure. FIG. 2 is a perspective view showing another example of the appearance of the toilet paper according to the present disclosure.

An embodiment of the present invention will now be described.
[Embodiment]
Fig. 1 is an explanatory diagram showing the schematic configuration of a toilet paper manufacturing device 1 that manufactures toilet paper according to an embodiment of the present invention. Fig. 1 shows the part of the toilet paper manufacturing device 1 that uses a base paper roll 10 manufactured in a part not shown in the figure to wind up paper with perforations and markers.
The toilet paper manufacturing device 1 includes a base paper supply section 2, a winding section 3, a perforation cutter 4, and a mark forming nozzle 5 in the areas shown in FIG.

The base paper roll 10 is formed by winding up base paper 10a having a width corresponding to multiple pieces of toilet paper 21, etc., which will be described later, and is installed in the base paper supply section 2 of the toilet paper manufacturing apparatus 1.
The base paper supply unit 2 supports the base paper roll 10 around which a strip-shaped base paper 10a is wound, and the base paper 10a is pulled out while rotating the base paper roll 10. Specifically, the base paper supply unit 2 includes feed rollers 11 and 12, rollers and guides, and the base paper 10a pulled out from the base paper roll 10 is transported by a transport means (not shown) in the direction indicated by the arrow a (hereinafter, the transport direction) via the feed rollers 11 and 12.
The transport means transports the base paper 10a unwound from the base paper roll 10 from the position where the base paper supply unit 2 is installed to the position where the winding unit 3 is installed.

The toilet paper manufacturing apparatus 1 is equipped with a perforation cutter 4 that forms perforations extending in the width direction X of the base paper 10a in the base paper 10a being transported by the transport means described above. The toilet paper manufacturing apparatus 1 also includes a mark forming nozzle 5 that forms a mark on the base paper 10a at a position where the transported base paper 10a reaches after passing through the perforation cutter 4.
The toilet paper manufacturing device 1 also includes a winding unit 3 that winds up the base paper 10a at a position where the transported base paper 10a reaches after passing through the mark forming nozzle 5.
Furthermore, the toilet paper manufacturing apparatus 1 is equipped with a paper cutter (not shown) between the mark forming nozzle 5 and the winding unit 3 in the conveying direction, which cuts the base paper 10a to be wound by the winding unit 3 to form a winding end.

The winding section 3 is equipped with a winding shaft 30 that winds the base paper 10a transported by the transport means. The winding section 3 is disposed below the winding shaft 30 and is equipped with a winding guide roller 32 and a winding guide roller 33 that wind the base paper 10a onto the winding shaft 30.

The winding unit 3 also includes a pressure roller 31 that is disposed above the winding shaft 30 and presses the base paper 10a (roll 20) being wound by the winding shaft 30, applying an appropriate tension to the base paper 10a and winding it up. The pressure roller 31 is supported by a support means and can apply a predetermined pressure in response to the outer diameter of the roll, which changes as the winding of the roll 20 progresses.

The toilet paper manufacturing device 1 is equipped with a cutting means for cutting the roll 20 wound in the winding section 3 into rings at multiple locations.

Fig. 2 is an explanatory diagram showing a portion equipped with a mark forming nozzle 5 for forming a mark 50 on the base paper 10a being transported from the base paper supply section 2 to the winding section 3. Fig. 2 shows the state of the base paper 10a being transported by the transport means as viewed from above.
The toilet paper manufacturing device 1 is equipped with a plurality of mark forming nozzles 5 fixed, for example, by a mounting member, above the base paper 10a transported by the transport means.

The multiple mark-forming nozzles 5 are arranged facing the width direction X of the base paper 10a being transported. The mark-forming nozzles 5 are arranged at intervals from adjacent mark-forming nozzles 5 so that when the base paper 10a is wound up into a roll 20 by the winding unit 3 and this roll 20 is cut by cutting means to form each of the toilet paper sheets 21, 22, 23, 24, a predetermined liquid can be applied to each position on both ends of each of the toilet paper sheets 21, 22, 23, 24 in the width direction X.
The number of mark forming nozzles 5 to be arranged is, for example, twice the number of toilet paper sheets 21, 22, 23, 24 formed by cutting the roll 20. Note that the number of mark forming nozzles 5 provided in the toilet paper manufacturing apparatus 1 is not limited to the number shown in FIG.

The toilet paper manufacturing device 1 is equipped with piping (not shown) that supplies a predetermined liquid to each mark-forming nozzle 5, a compressor (not shown) that sends the predetermined liquid from a tank (not shown) through piping to each mark-forming nozzle 5, and a control means (not shown) that controls the operation of the compressor and the mark-forming nozzle 5 to adjust the amount of liquid sprayed from the mark-forming nozzle 5 and the timing of spraying.

Next, the operation of the toilet paper manufacturing device 1 will be described.
The toilet paper manufacturing device 1 uses, for example, a papermaking machine and a dryer to produce a strip-shaped base paper 10a from paper stock, and further produces a base paper roll 10 by rolling up this strip-shaped base paper 10a.
Thereafter, the base paper roll 10 is placed in the base paper supply section 2, and the strip-shaped base paper 10a unwound from the base paper roll 10 is transported to the winding section 3 by a transport means.
During this conveyance, the perforation cutter 4 is operated to form perforations 40 extending in the width direction X of the strip of base paper 10a at predetermined intervals in the conveyance direction. The perforations 40 are provided so as to connect both ends of the base paper 10a in the width direction X.

In the toilet paper manufacturing device 1, a sensor is used to detect the position of the perforation 40 of the base paper 10a being transported. When the portion of the base paper 10a with the perforation 40 is transported below the mark forming nozzle 5, the toilet paper manufacturing device 1 controls the compressor, the mark forming nozzle 5, etc. to spray an appropriate amount of a predetermined liquid from the mark forming nozzle 5 toward the perforation 40.
The predetermined liquid is, for example, water containing a dye, and this liquid gives the base paper 10a a color different from the color of the base paper 10a. The base paper 10a with the predetermined liquid applied thereto is transported to the winding unit 3 by the transport means.

FIG. 3 is an explanatory diagram showing a roll 20 produced by winding the base paper 10 a by the winding unit 3 .
The base paper 10 a transported to the winding section 3 is guided by winding guide rollers 32 and 33 and wound around a winding shaft 30 .
The winding shaft 30 sequentially winds up the conveyed base paper 10a to form a roll 20 having the same width as the base paper 10a.

In the winding section 3, when the winding shaft 30 winds the base paper 10a to form the roll 20, an appropriate pressure is applied to the outer periphery of the roll 20 using a pressure roller 31, so that the winding is performed without causing slack or wrinkles.
When a predetermined length of base paper 10a has been wound around the winding section 3, the toilet paper manufacturing device 1 uses a paper cutter positioned between the winding guide roller 32 and the mark forming nozzle 5 to cut the base paper 10a being transported by the transport means, and stops winding of the base paper 10a and production of the roll 20.

The roll 20 is removed from the winding shaft 30 and cut into round pieces using a round cutter at a cutting station 60 shown in FIG. 3 to form roll-shaped toilet paper pieces 21, 22, 23, and 24.
FIG. 3 shows four toilet paper sheets 21, 22, 23, and 24 formed from the roll 20, but the number of toilet paper sheets 21, 22, 23, and 24 formed from the roll 20 is not limited to four.

FIG. 4 is a perspective view showing the appearance of the toilet paper 21.
The toilet paper 21 is formed of paper 21a wound into a roll shape. The paper 21a is made by cutting the base paper 10a to a predetermined size.
When the roll 20 is sliced at the cutting position 60 in Fig. 3, the toilet paper 21 shown in Fig. 4 is formed. This toilet paper 21 has perforations 40 extending in the width direction of the roll shape, and marks 50 formed on the perforations 40 to indicate the position of the perforations 40.
Also, like toilet paper 21, toilet paper 22, 23, and 24 have perforations 40 and markings 50.
Each mark 50 is provided on either end of each of the toilet paper sheets 21, 22, 23, 24 in the width direction X or in the vicinity thereof, sandwiching the cutting position 60 therebetween.

Next, a manufacturing process for forming the mark 50 on the base paper 10a will be described.
The mark forming nozzle 5 sprays or drops a predetermined liquid onto the base paper 10 a moving below the mark forming nozzle 5 .
At this time, when the roll 20 is cut into slices to form toilet paper 21, 22, 23, 24, the mark forming nozzle 5 applies a predetermined liquid to both ends or positions near each end of each toilet paper 21, 22, 23, 24 in the width direction X, thereby forming a mark 50.

The marking nozzle 5 deposits a predetermined liquid onto a predetermined area of the base paper 10a so that, for example, with one spray or drop, a marking 50 measuring 5 mm to 10 mm in size is formed in the width direction X of each toilet paper 21, 22, 23, 24. By forming the marking 50 to the above size, it becomes easier for the user to recognize the position of the perforation 40.

In addition, a specific liquid that widens the gaps between the paper fibers may be applied to the positions of each edge portion of each toilet paper 21, 22, 23, and 24 in the width direction X, i.e., the cutting positions 60 shown in Figure 3, to form marks 50, making it easier to cut them off at the perforations 40.
When the mark 50 is formed on the edge portion in the width direction X of the roll-shaped toilet paper 21, a specific liquid applied to the edge portion during the manufacturing process penetrates into the paper fibers of the edge portion. This results in toilet paper 21 with the mark 50 formed only on the perforation 40 and on both edge portions, as shown in Figure 5. This toilet paper 21 is more likely to tear than other portions after the specific liquid dries. This makes it easier to start cutting off the paper 21a from the edge portion of the paper 21a at the perforation 40.

When the base paper 10a with the predetermined liquid applied thereto is wound into a roll shape by the winding unit 3 to produce the roll 20, the mark forming nozzle 5 sprays an appropriate amount of the predetermined liquid to prevent the predetermined liquid applied to the base paper 10a from seeping into the parts where the perforations 40 are not formed while the base paper 10a is in the rolled state. After the mark forming nozzle 5 applies the predetermined liquid to the base paper 10a, it is preferable to dry the predetermined liquid applied to the base paper 10a using an appropriate drying means, and then wind the base paper 10a in the winding unit 3.

It is preferable to use a liquid having a weak adhesive force as the predetermined liquid sprayed from the mark formation nozzle 5. When using a predetermined liquid having a weak adhesive force, the base paper 10a is made to reach the winding section 3 and wound into a roll before the predetermined liquid attached to the base paper 10a is completely dried (within the time period during which lamination and adhesion are possible).
The adhesive strength of this specified liquid is, for example, strong enough that when the paper sheets 21a forming the toilet paper 21 in Figure 4 are overlapped and adhered together and then peeled away, each of the paper sheets 21a will not be torn unexpectedly.

Furthermore, when using a specific liquid having adhesive properties, the specific liquid is applied to the base paper 10a so that adhesive properties are generated on the surface that will become the inside of the roll when the base paper 10a is wound into a roll.
When adhesion is performed on the inner surface of the roll as described above, for example, in the toilet paper 21 of Figure 4, when the outermost paper 21a of the roll is pulled out, the paper 21a located on the outside of the roll is adhered to the paper 21a on the inside of the roll at the position of the mark 50.
In this way, when the mark 50 is adhered to the paper 21a on the inside of the roll, when the user pulls out the paper 21a on the outside of the roll, resistance is encountered in the pulling action at the position of the mark 50 provided on the paper 21a on the outside of the roll, and the user can recognize the position of the perforation 40 by senses other than sight.

The toilet paper of the present disclosure has a mark 50 formed on the perforation 40, so that the user can easily recognize the position of the perforation 40 and can easily separate the paper 21a from the toilet paper 21 at the position of the perforation 40.

In addition, the toilet paper of the present disclosure has the mark 50 formed by applying a specific liquid with weak adhesive power, so that, for example, when a user pulls out the paper 21a from the toilet paper 21 and the overlapping pieces of paper 21a separate, resistance occurs at the position of the mark 50. This allows the user to easily recognize the position of the perforation 40. Furthermore, if the mark 50 is colored, even a user with poor eyesight can easily recognize the position of the perforation 40.

Furthermore, according to the toilet paper manufacturing method of the embodiment of the present disclosure, a predetermined liquid is applied to the base paper 10a pulled out from the base paper roll 10 to form a mark 50 while the base paper 10a is being transported to the winding section 3, thereby simplifying the manufacturing process of the toilet paper manufacturing apparatus 1 and forming the mark 50 indicating the position of the perforation 40.
Therefore, it is possible to produce toilet paper 21 having mark 50 formed thereon while keeping production costs down.

REFERENCE SIGNS LIST 1 Toilet paper manufacturing device 2 Base paper supply section 3 Winding section 4 Perforation cutter 5 Marking nozzle 10 Base paper roll 10a Base paper 11, 12 Feeding guide roller 20 Roll 21, 22, 23, 24 Toilet paper 21a Strip of paper 30 Winding shaft 31 Pressure roller 32, 33 Winding guide roller 40 Perforation 50 Marking 60 Cutting position X Width direction

Claims (3)

This toilet paper is made by winding a strip of paper into a roll,
Perforations extending in the width direction of the roll shape;
A mark formed on the perforation and indicating a position of the perforation;
The mark widens the gaps between the paper fibers of the paper.
The toilet paper is characterized by the above. The indicia is colored.
2. The toilet paper according to claim 1 . The mark is formed only on both edges of the paper in the width direction.
The toilet paper according to claim 1 or 2.

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