Toilet paper with perforations

Abstract

The object of the present invention is to provide toilet paper with perforations that allow for easy separation and prevent unintentional tearing. [Solution] Toilet paper 10 has multiple perforations extending in the width direction of the sheet. The perforations are a single linear row of multiple cuts, and the multiple cuts include cut portion 3 having a predetermined length and cut portion 2 having a length longer than cut portion 3. There are more cut portions 3 than cut portions 2.

Description

[Technical Field]

[0001] The present invention relates to toilet paper with perforations. [Background technology]

[0002] Conventionally, various toilet papers with innovative perforations have been developed (for example, Patent Documents 1 and 2). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2017-77447 [Patent Document 2] Utility Model Registration No. 3190744 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in conventional perforations, all of the slits that make up a single perforation line are formed with approximately the same shape and dimensions. Therefore, if the slits are made small (the strength of the perforations is increased) to prevent unintentional tearing of the sheet, a problem arises in that the user needs a relatively large force to tear the sheet. Conversely, if the slits are made large (the strength of the perforations is reduced) so that the sheet can be torn with less force, the perforations may tear when the sheet rotates inside the dispenser or when even a small amount of tension is applied. As such, it has been difficult to achieve a high level of compatibility between the conflicting requirements of ease of tearing and prevention of unintentional tearing. The toilet paper in Patent Document 1 has perforations 8 arranged at regular intervals on the toilet paper 7, which are straight lines extending perpendicularly from the edges on both sides of the paper, and a tongue-shaped protrusion 9 in the center facing the direction the paper is pulled out. However, this does not allow for both ease of separation and prevention of unintentional tearing. The toilet paper in Patent Document 2 has perforations 8 arranged at regular intervals on the toilet paper 7, which are straight lines extending perpendicularly from the edges on both sides of the paper, and a tongue-shaped protrusion 9 in the center facing the direction the paper is pulled out. However, this does not allow for both ease of separation and prevention of unintentional tearing. The toilet paper in Patent Document 1 has perforations 8 arranged at regular intervals on the toilet paper 7, which are straight lines extending perpendicularly from the edges on both sides of the paper, and a tongue-shaped protrusion 9 in the center facing the direction the paper is pulled out. However, this does not allow for both ease of separation and prevention of unintentional tearing. The toilet paper in Patent Document 2 is a roll of toilet paper with straight perforations 5 that run perpendicular to the side edges from one side edge to the other at appropriate intervals along its entire length, and each perforation has a slit 6 that crosses diagonally, and the slits reach the side edge of the toilet paper on the side in the direction the toilet paper is pulled out, but it is not possible to achieve both ease of separation and prevention of unintentional tearing.

[0005] The present invention was made in consideration of the above, and aims to provide toilet paper with perforations that can be easily separated and prevent unintentional tearing. [Means for solving the problem]

[0006] The above objectives are: A toilet paper sheet having a plurality of perforations extending in the width direction of the sheet, The perforations are a plurality of cuts arranged in a straight line, The plurality of cuts include first cut portions having a predetermined length and second cut portions having a length longer than the first cut portions, and the number of the first cut portions is greater than the number of the second cut portions. This is achieved by: [Effects of the Invention]

[0007] According to the present invention, it is possible to provide toilet paper with perforations that can be easily separated and prevent unintentional tearing. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a diagram illustrating toilet paper 10 according to an embodiment of the present invention. [Figure 2] 1 is a diagram illustrating toilet paper 20 according to an embodiment of the present invention. [Figure 3] 1A and 1B are diagrams illustrating toilet paper rolls 10 and 20 according to an embodiment of the present invention. [Figure 4] 1A to 1C are diagrams illustrating a method for manufacturing toilet paper 10 according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0009] Below, toilet paper rolls 10 and 20 according to embodiments of the present invention will be explained using Figures 1 to 4. In all of the following drawings, the dimensions and proportions of each component may be shown differently as appropriate to make it easier to understand.

[0010] FIG. 1 is a front view of toilet paper 10 according to an embodiment of the present invention. Toilet paper 10 is toilet paper with multiple perforations a extending in the width direction of roll sheet 1, arranged at predetermined intervals. Perforations a are perforations consisting of multiple cutouts 3 and 2, and cutouts 2 are longer than cutouts 3. Perforations a in this embodiment are configured with multiple cutouts 3 and 2 in a single linear row, with cutouts 2 arranged at both ends and multiple (three or more) cutouts 3 between the cutouts 2. In this embodiment, perforations a have more cutouts 3 than cutouts 2. In this embodiment, when the length of cutout 3 is 1, it is preferable that the length of cutout 2 is approximately 1.5 to 3, but the length of both (cutout 2 / cutout 3) may be 1.1 to 1.4, or may be greater than 3.

[0011] With this configuration, when a user applies force to tear the toilet paper 10, stress is concentrated at the edges of the sheet. This allows the notches 2 on both ends of the sheet to function as tearing initiation points, allowing the sheet to begin tearing with extremely little force. Once tearing begins, the force causes adjacent notches 3 to break in a chain reaction, allowing the entire perforation a to be smoothly torn off.

[0012] FIG. 2 is a front view of toilet paper 20 according to an embodiment of the present invention. The toilet paper 20 is toilet paper with multiple perforations b arranged at predetermined intervals across the width of the roll sheet 1. The perforations b are made up of multiple cutouts 3 and 2, and the cutouts 2 are longer than the cutouts 3. The perforations b arranged on the toilet paper 20 of this embodiment are made up of a perforation extending from the left side to the lower right (hereinafter referred to as the "first perforation") and a perforation extending from the right side to the lower left (hereinafter referred to as the "second perforation"), with the first perforation and the second perforation connected in the middle. The first perforation and the second perforation are made up of multiple cutouts 3 and 2 arranged in a straight line, with cutouts 2 arranged at both ends and multiple (three or more) cutouts 3 between the cutouts 2. In the present embodiment, perforation b has more notch portions 3 than notch portions 2. In the present embodiment, when the length of notch portion 3 is 1, it is preferable that the length of notch portion 2 is about 1.5 to 3, but the length of both (notch portion 2 / notch portion 3) may be 1.1 to 1.4, or may be greater than 3. In the present embodiment, no notch portion is provided between the first and second perforations (center portion), but the notch portion 2 of the first perforation and the notch portion 2 of the second perforation may be connected in some cases.

[0013] With this configuration, when a user applies force to tear the toilet paper 20, stress is concentrated at the edge of the sheet (the right edge when tearing from the right, and the left edge when tearing from the left). This allows the notches 2 on both ends of the sheet to function as tearing initiation points, allowing tearing to begin with extremely light force. Furthermore, in the toilet paper 20 of this embodiment, the first and second perforations are not aligned in a straight line, so stress escapes when the connection between the first and second perforations is torn. However, in this embodiment, the notch 2 is positioned at the connection between the first and second perforations. Therefore, once tearing begins, the momentum causes the adjacent notch 3 to break in a chain reaction, allowing the connection between the first and second perforations to be smoothly torn, and the entire perforation b to be smoothly torn.

[0014] 3 is an enlarged view of the cutouts 2 and 3 arranged on the toilet paper 10 and 20 according to the embodiment of the present invention. In this embodiment, the cutout 2 is configured to be about 1.8 times longer than the cutout 3.

[0015] 4 is a schematic diagram of a front view of a perforation blade 100 used in a manufacturing device used to arrange perforations a and b in toilet paper 10, 20 according to an embodiment of the present invention. The perforation blade 100 has multiple protruding blades arranged at predetermined intervals. These blades consist of blade 2a for forming incision 2 and blade 3a for forming incision 3. Perforations a and b are formed by pressing the perforation blade 100 against the roll sheet at predetermined intervals.

[0016] The above-described embodiment is a preferred example of the present invention, and various technically preferable limitations are applied thereto, but the scope of the present invention is not unduly limited by the above description. Furthermore, not all of the configurations described in the above-described embodiment are essential components of the present invention. Furthermore, the configurations described in the above-described embodiment may be added to or combined with each other. [Industrial Applicability]

[0017] The present invention can be widely used in sheets with perforations (for example, various sheets such as toilet paper, kitchen paper, sheet-like packaging containers, medicine packaging sheets, etc.). [Explanation of symbols]

[0018] 10, 20 toilet paper a, b perforations 1 roll sheet 2, 3 Notches 100 perforation blade 2a, 3a blade

Claims

[Claim 1] A toilet paper sheet having a plurality of perforations extending in the width direction of the sheet, The perforations are a plurality of cuts arranged in a straight line, The plurality of cuts include first cut portions having a predetermined length and second cut portions having a length longer than the first cut portions, and the number of the first cut portions is greater than the number of the second cut portions.

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