Hygienic tissue paper

Patent metadata

Field	Value
Publication number	US-11525219-B2
Application number	US-201816970022-A
Country	US
Kind code	B2
Filing date	Nov 29, 2018
Priority date	Mar 26, 2018
Publication date	Dec 13, 2022
Grant date	Dec 13, 2022

Abstract

A hygienic tissue paper includes first slits that are disposed in a longitudinal direction at predetermined intervals, the first slits extending in a width direction intersecting the longitudinal direction, wherein the first slits each include perforations, and wherein a cut length of each of the perforations increases from at least one end in the width direction toward a central portion in the width direction.

First claim

The invention claimed is:

1. A hygienic tissue paper comprising
first slits that are disposed in a longitudinal direction at predetermined intervals, the first slits extending in a width direction intersecting the longitudinal direction,
wherein the first slits each include perforations,
wherein a cut length of each of the perforations increases from at least one end in the width direction toward a central portion in the width direction,
wherein the first slits each include a first perforation formed on at least one end side and a second perforation formed on the central portion,
wherein a cut length of the second perforation is greater than a cut length of the first perforation,
wherein the second perforation is an only perforation formed on the central portion, and
wherein the cut length of the first perforation is 5 mm to 7.5 mm, and the cut length of the second perforation is 10 mm to 15 mm.

2. The hygienic tissue paper as claimed in claim 1 ,
wherein a cut-tie ratio of the first perforation is 80.0 to 96.0.

3. The hygienic tissue paper as claimed in claim 1 ,
wherein a cut-tie ratio of the second perforation is 87.0 to 99.0.

4. The hygienic tissue paper as claimed in claim 1 ,
wherein the first perforation includes at least an edge cut portion that continues from an edge of the one end.

5. The hygienic tissue paper as claimed in claim 4 ,
wherein a ratio of an edge cut length of the edge cut portion to the cut length of the first perforation is 0.02 to 0.16.

6. The hygienic tissue paper as claimed in claim 1 ,
wherein the cut length of each of the perforations increases from another end toward the central portion, the another end facing the one end in the width direction.

7. The hygienic tissue paper as claimed in claim 1 , comprising
a second slit that is alternately disposed with each of the first slits in the longitudinal direction at a predetermined interval, the second slit extending in the width direction intersecting the longitudinal direction,
wherein the second slit includes a third perforation, and
wherein a cut length of the third perforation is equal to or shorter than the cut length of the first perforation in each of the first slits.

Assignees

• Daio Seishi Kk

Inventors

• Warashina Shinichi

Classifications

• Y10T428/15

  Sheet, web, or layer weakened to permit separation through thickness · CPC title

• A47K10/16 Primary

  Paper towels; Toilet paper; Holders therefor · CPC title

• D21H27/002 Primary

  Tissue paper; Absorbent paper (D21H21/22, D21H27/02, D21H27/20 take precedence; toilet paper A47K10/00; absorbent pads for physiological fluids A61L15/16; making on paper-making machines D21F11/00) · CPC title

• A47K7/00

  Body washing or cleaning implements · CPC title

• B26F1/18

  Perforating by slitting, i.e. forming cuts closed at their ends without removal of material · CPC title