Patents Assigned to Daio Paper Corporation
  • Publication number: 20230108153
    Abstract: An absorbent article includes: a top sheet constituting a usage-side surface; a liquid impervious sheet disposed on a back surface side; and an absorbent element interposed between the top sheet and the liquid impervious sheet. The top sheet is a perforated nonwoven fabric in which a large number of openings penetrating the nonwoven fabric from a front surface to a back surface are formed at intervals in a front-back direction and a width direction of a product. A liquid pervious intermediate sheet is bonded to a back surface side of the top sheet at a large number of bonding points by thermal bonding or ultrasonic bonding. The openings each have an area of 1 to 30 mm2. The bonding points each have an area of 0.12 to 20 mm2, the area being smaller than the area of the opening.
    Type: Application
    Filed: March 9, 2021
    Publication date: April 6, 2023
    Applicant: DAIO PAPER CORPORATION
    Inventor: Yurika Takagi
  • Patent number: 11617690
    Abstract: To certainly fix the peripheral portion of a hole to a support sheet without losing flexibility. The above problem is solved by providing a cover nonwoven fabric in which a plurality of holes penetrating front and back surfaces at intervals, and a liquid impervious sheet in which the cover nonwoven fabric is bonded via a hot melt adhesive, in the cover nonwoven fabric, the peripheral portions of the holes are warped portion warped toward the liquid impervious sheet side, at least a tip portion of the warped portion of the cover nonwoven fabric has an adhesive portion bonded to the liquid impervious sheet via the hot melt adhesive, and a portion of the cover nonwoven fabric other than the adhesive portion is not adhered to the liquid impervious sheet.
    Type: Grant
    Filed: May 11, 2017
    Date of Patent: April 4, 2023
    Assignee: Daio Paper Corporation
    Inventor: Yuichi Yamashita
  • Pad
    Patent number: 11612520
    Abstract: To provide a pad that folds in three in the front-back direction maintaining the shapes of a large number of convex portions protruding on a front-face sheet that prevents the deterioration of liquid diffusibility. The left front side portion and the left back side portion are folded inward with a first left side folding line which is extending in the front-back direction as the center for the folding and which is provided close to the left side with respect to the left side narrowing edge, and the right front side portion and the right back side portion are folded inward with a first right side holding line which is extending in the front-back direction and which is provided close to the right side with respect to the left side narrowing edge.
    Type: Grant
    Filed: July 19, 2017
    Date of Patent: March 28, 2023
    Assignee: Daio Paper Corporation
    Inventor: Aya Oshima
  • Patent number: 11612521
    Abstract: A waist portion W has a first portion P1 and a second portion P2 each including a waist elastic member. The first portion P1 includes an over sheet layer folded back at an edge of a waist opening WO extending to an inside of a waist inner sheet layer. The over sheet layer is formed of a sheet material having a portion folded back at an edge of the waist opening WO from a position outside the waist elastic member in the second portion P2 and extending to a position inside the waist elastic member in the second portion P2. In the first portion P1, the waist elastic member is not fixed to the sheet material. In the second portion P2, the waist elastic member is fixed to the sheet material, and the sheet material is contracted in a width direction WD together with the waist elastic member.
    Type: Grant
    Filed: May 11, 2018
    Date of Patent: March 28, 2023
    Assignee: Daio Paper Corporation
    Inventor: Yoshitake Ishikawa
  • Publication number: 20230089492
    Abstract: A disposable wearable article including a top sheet having a skin-touching region that is brought into contact with skin of a wearer, the top sheet being made from nonwoven fabric, wherein the skin-touching region has a lotion-bearing zone which bears a hydrophilic lotion containing water and glycerin, the lotion-bearing zone having a MD dimension of 30 mm or larger and a CD dimension of 5 mm or larger, wherein the lotion-bearing zone has a surface moisture percentage of 3 to 10%, wherein the hydrophilic lotion has a water activity value of 0.8 or less, and wherein the hydrophilic lotion is free of preservatives.
    Type: Application
    Filed: March 16, 2021
    Publication date: March 23, 2023
    Applicant: DAIO PAPER CORPORATION
    Inventors: Yuto Fujiwara, Wataru Nakamura
  • Publication number: 20230093348
    Abstract: A method for manufacturing a fibrous cellulose having a high resin reinforcing effect and a method for manufacturing a fibrous cellulose composite resin having high strength. A method for manufacturing a fibrous cellulose includes: a step of subjecting a cellulose raw material and at least one of urea and a derivative of urea to a heat treatment to replace a part or all of hydroxyl groups of the cellulose raw material with carbamate groups; and a step of defibrating the cellulose raw material within a range in which an average fiber width is 0.1 ?m or more. The heat treatment is performed under a condition that organic acid ions are added in an amount of 0.001 mmol or more with respect to 1 g of the urea and the derivative of urea. In addition, a fibrous cellulose thus obtained and a resin are kneaded to manufacture a fibrous cellulose composite resin.
    Type: Application
    Filed: March 2, 2021
    Publication date: March 23, 2023
    Applicant: DAIO PAPER CORPORATION
    Inventors: Takaaki Imai, Yu Ochiai
  • Patent number: 11607352
    Abstract: A method for producing an underpants-type disposable diaper including a stretchable region stretchable at least in one direction in an outer body. The stretchable region is formed by stacking an elastic film between a first sheet layer composed of a nonwoven fabric and a second sheet layer composed of a nonwoven fabric. When the elastic film is stretched in the stretching and contracting direction, the first sheet layer and the second sheet layer are joined via through holes formed in the elastic film at a large number of sheet bond portions arranged at intervals in each of a stretching and contracting direction and a direction orthogonal thereto, and in the sheet bond portions, the first sheet layer and the second sheet layer (20B) are joined at least by a melted and solidified material of the elastic film among the first sheet layer and the second sheet layer.
    Type: Grant
    Filed: June 30, 2020
    Date of Patent: March 21, 2023
    Assignee: DAIO PAPER CORPORATION
    Inventors: Aya Takahashi, Yukina Furuhashi
  • Patent number: 11584803
    Abstract: A fine cellulose fiber in which when the fine cellulose fiber is formed into a dispersion, the dispersion has very high light transmittance and viscosity, and a method for producing the fine cellulose fiber. The fine cellulose fiber has a fiber width of 1 to 200 nm. A part of hydroxy groups of the cellulose fiber are substituted with a predetermine functional group to introduce an ester of phosphorus-oxo acid, and the introduction amount of the functional group is more than 2.0 mmol per 1 g of the cellulose fiber. For producing the fine cellulose fiber, to cellulose fiber is added a solution having a pH of less than 3.0 and including an additive (A) containing at least one of a phosphorus-oxo acid and a phosphorus-oxo acid metal salt and an additive (B) containing at least one of urea and a urea derivative, and the mixture is heated to perform fibrillation.
    Type: Grant
    Filed: May 17, 2019
    Date of Patent: February 21, 2023
    Assignee: Daio Paper Corporation
    Inventor: Ikko Matsusue
  • Pad
    Patent number: 11583452
    Abstract: A pad capable of enhancing the fitting performance to a wearer. An absorber includes a front body portion, a back body portion, and a narrowing portion, whose width dimension is reduced, provided between the front body portion and the back body portion. A first groove extending in the front-back direction is formed in a central portion in the width direction of the absorber. A third groove extending in the width direction is formed in a central portion in the front-back direction of the narrowing portion. A second groove extending in the width direction is formed in a front side portion in the front-back direction of the narrowing portion. A fourth groove extending in the width direction is formed in a back side portion in the front-back direction of the narrowing portion.
    Type: Grant
    Filed: July 19, 2017
    Date of Patent: February 21, 2023
    Assignee: Daio Paper Corporation
    Inventor: Tatsuhiko Kashiwagi
  • Patent number: 11576826
    Abstract: A cover nonwoven fabric covers a back surface of an inner member from between a front side outer member and the inner member to between a back side outer member and the inner member. The cover nonwoven fabric extends from a back surface side of a base portion of one side gather to a back surface side of a base portion of the other side gather. The cover nonwoven fabric has holes penetrating the front and back surfaces at intervals from between the front side outer and inner members to between the back side outer and inner members. The side edges of the cover nonwoven fabric are located at the positions same as the side edges of the narrowest part of the absorber in the width direction or on the center side in the width direction with respect to the side edges of the narrowest part.
    Type: Grant
    Filed: May 11, 2017
    Date of Patent: February 14, 2023
    Assignee: Daio Paper Corporation
    Inventors: Akinori Fukae, Yosuke Mori, Aya Ide
  • Publication number: 20230042569
    Abstract: A household tissue storage container including a container main body and an open/close lid. The container main body includes an upper container main body, a lower container main body, a connector, and a button provided on an upper surface of the upper container main body, to open and close the open/close lid. The button includes a button side fitter projecting downward, and button side ribs projecting downward from the button in front of the button side fitter. The upper container main body includes a button attaching portion including a main body side fitter which projects upward and to which the button side fitter is be fitted, and main body side ribs projecting forward from an outer surface of the main body side fitter, and in attaching the button to the button attaching portion, the button side ribs are inserted and fitted between the adjacent main body side ribs.
    Type: Application
    Filed: February 4, 2021
    Publication date: February 9, 2023
    Applicant: DAIO PAPER CORPORATION
    Inventor: Akiteru MIURA
  • Publication number: 20230023990
    Abstract: An underpants-type disposable diaper wherein the end portions of elastic members are kept from being drawn in, and the bonding strength in side sealed portions is kept from deteriorating. The diaper has outer member defining front and back body sections, wherein side portions of the outer member in the front and back body sections are joined to form side sealed portions, which produce a waist opening and a pair of leg openings. The front and/or back body sections, are provided with a tortuous elastic member extending with curvature from one to the other of the side sealed portions, and bonded thereto with adhesive. The amount of adhesive applied to a zone neighbouring the inner zone of each side sealed portion is larger than that applied to the outer zone of each side sealed portion.
    Type: Application
    Filed: December 8, 2020
    Publication date: January 26, 2023
    Applicant: DAIO PAPER CORPORATION
    Inventor: Asako Sawai
  • Patent number: 11559183
    Abstract: A wet sheet for cleaning includes multiple layers and is impregnated with a chemical solution. The wet sheet includes hydrophobic fiber layers arranged in a front surface layer and a back surface layer, and a hydrophilic fiber layer arranged in an intermediate layer. The hydrophobic fiber layers have an interlaced part with a high fiber density where the hydrophobic fiber layers are interlaced with the hydrophilic fiber layer. The interlaced part has at least one slightly interlaced part and at least one highly interlaced part which is formed in a dent shape and which is interlaced with a higher fiber density. The highly interlaced part is formed in an area ratio of 10 to 20% to an area of the front surface layer or the back surface layer. Static friction resistance of the wet sheet for cleaning is lower than kinetic friction resistance of the wet sheet for cleaning.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: January 24, 2023
    Assignee: DAIO PAPER CORPORATION
    Inventor: Naoki Shintani
  • Patent number: 11540956
    Abstract: An elastic film stretchable structure in which an elastic film is stacked between a first sheet layer having air permeability and a second sheet layer having air permeability, the first sheet layer and the second sheet layer are bonded through bonding holes penetrating the elastic film at a number of sheet bonded portions arranged at intervals. A region having the elastic film stretchable structure has a stretchable region that is stretchable in a stretchable direction, and the stretchable region is contracted in the stretchable direction by a contraction force of the elastic film and is extensible in the stretchable direction, and vent holes are formed on the elastic film at sites where the elastic film does not overlap with the sheet bonded portions.
    Type: Grant
    Filed: July 19, 2017
    Date of Patent: January 3, 2023
    Assignee: Daio Paper Corporation
    Inventor: Tomonari Takeuchi
  • Publication number: 20220409448
    Abstract: A disposable diaper capable of providing good suppression of diaper rash. A disposable diaper including top sheet 30 constituting a surface for use, liquid-impervious sheet provided on the under face side, and absorbent element interposed therebetween, wherein the top sheet is formed of perforated nonwoven fabric having a number of holes arranged at intervals and each penetrating the two sides of the fabric, and a moisturizer M composed mainly of glycerin is applied to the top sheet.
    Type: Application
    Filed: November 18, 2020
    Publication date: December 29, 2022
    Applicant: DAIO PAPER CORPORATION
    Inventor: Yuki Okada
  • Publication number: 20220403590
    Abstract: A wiping sheet includes a patterned part of a fiber assembling base material and a non-patterned part of the fiber assembling base material. The patterned part includes cellulose nanofiber; and the non-patterned part does not include the cellulose nanofiber.
    Type: Application
    Filed: July 9, 2020
    Publication date: December 22, 2022
    Applicant: DAIO PAPER CORPORATION
    Inventor: Shoko YAMASHITA
  • Patent number: D979543
    Type: Grant
    Filed: June 4, 2021
    Date of Patent: February 28, 2023
    Assignee: DAIO PAPER CORPORATION
    Inventors: Takuro Shimada, Alina Bista, Curt Carrender
  • Patent number: D980200
    Type: Grant
    Filed: June 4, 2021
    Date of Patent: March 7, 2023
    Assignee: DAIO PAPER CORPORATION
    Inventors: Takuro Shimada, Alina Bista, Curt Carrender
  • Patent number: D980201
    Type: Grant
    Filed: December 17, 2021
    Date of Patent: March 7, 2023
    Assignee: DAIO PAPER CORPORATION
    Inventors: Takuro Shimada, Alina Bista, Curt Carrender
  • Patent number: D980419
    Type: Grant
    Filed: November 16, 2020
    Date of Patent: March 7, 2023
    Assignee: DAIO PAPER CORPORATION
    Inventor: Takahiko Adachi