Patents by Inventor Shuta YASUI
Shuta YASUI has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11692993Abstract: To provide tissue paper excellent in softness and smoothness. In tissue paper that is two-ply non-moisturizing tissue paper to which no chemical solution is applied, a basis weight per sheet is 10.0 to 18.0 g/m2, the thickness of two plies is 100 to 240 ?m, a dry tensile strength in the paper horizontal direction is 70 to 180 cN/25 mm, a wet tensile strength in the paper horizontal direction is 25 to 55 cN/25 mm, and a free sensory evaluation value Ef calculated according to the following Equation 1 is 3.7 to 6.6, and a slip sensory evaluation value Es calculated according to the following Equation 2 is 5.0 to 8.2. Free sensory evaluation value Ef=?2.879×(dry tensile strength in paper horizontal direction)+6.55×(wet tensile strength in paper horizontal direction)+5.36??(Equation 1) Slip sensory evaluation value Es=?8.80×(dynamic friction coefficient)?0.41×(arithmetic mean surface roughness)+13.Type: GrantFiled: October 29, 2018Date of Patent: July 4, 2023Assignees: DAIO PAPER CORPORATION, TOHOKU UNIVERSITYInventors: Shuta Yasui, Hidenori Yorozu, Kazuo Hokkirigawa, Takeshi Yamaguchi, Kei Shibata, Naoya Yamai, Risa Nakane
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Patent number: 11686046Abstract: Provided is a moisturized tissue excellent in strength and snot wiping property. In the moisturized tissue paper, a paper thickness is 220 to 330 ?m, a basis weight is 15 to 18 g/m2 per ply, a proportion of NBKP in the pulp combination is more than 70 mass %, a chemical solution content is 26 to 32 mass %, an arithmetic mean curvature at a peak point of an outer surface in an unpressurized state (Spc (1)) is 4.0 to 4.8 (1/mm), and a developed area ratio at an interface on the outer surface (Sdr) is 0.020 to 0.030 (?).Type: GrantFiled: November 22, 2019Date of Patent: June 27, 2023Assignee: Daio Paper CorporationInventors: Shuta Yasui, Minoru Iwasaki
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Patent number: 11519133Abstract: To provide tissue paper with an excellent “moist texture” and high “smooth texture.” 2-ply tissue paper is characterized by the basis weight per ply being less than 13 g/m2, the 2-ply paper thickness being less than 135 ?m, and containing above 1.4 g/m2 and less than 4.9 g/m2 of chemical agent which contains glycerin and 1,3-propanediol in a total amount of 83 mass % or more, wherein the mass ratio of glycerin and 1,3-propanediol is above 1:0.18 and less than 1:5.11.Type: GrantFiled: March 15, 2016Date of Patent: December 6, 2022Assignee: DAIO PAPER CORPORATIONInventor: Shuta Yasui
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Publication number: 20220372710Abstract: Provided is 3-ply tissue paper suitable for performing “tissue off” and excellent in softness and smoothness. In the 3-ply tissue paper containing an aqueous moisturizer, a paper thickness for three plies is 176 to 230 ?m, an arithmetic mean roughness Sa is 0.007 to 0.020 mm, and a compression work is 1.70 to 2.40 gf·cm/cm2 and a compression recovery rate is 46.0 to 54.5% for four sets of three plies, twelve plies in total.Type: ApplicationFiled: September 29, 2020Publication date: November 24, 2022Applicant: Daio Paper CorporationInventors: Shuta YASUI, Minoru IWASAKI
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Publication number: 20220354315Abstract: To provide an antibacterial and water-disintegrable toilet paper. A toilet paper includes three or four sheet layers. Each sheet has a basis weight of 12.0 to 16.0 g/m2. Each sheet has a paper thickness of 80 to 140 ?m. At least one pair of adjacent sheets are bonded to each other at a large number of bonding points with an adhesive 10. The adhesive 10 is polyvinyl alcohol, and contains benzalkonium chloride.Type: ApplicationFiled: July 30, 2021Publication date: November 10, 2022Applicant: Daio Paper CorporationInventors: Kenya TANIKAWA, Shuta YASUI
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Patent number: 11473246Abstract: A moisturizing tissue product that can be packaged in the same way as a non-moisturizing tissue product. With this tissue paper product, in which a web obtained by folding and laminating in a pop-up configuration a plurality of sheets of tissue paper containing a moisturizing agent is stored in a rectangular-shaped paper box having an outlet on an upper surface thereof, the problem of the tissue paper is solved by this tissue paper product in which the number of plies is 2.Type: GrantFiled: August 31, 2018Date of Patent: October 18, 2022Assignee: DAIO PAPER CORPORATIONInventor: Shuta Yasui
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Patent number: 11459166Abstract: A moisturizing tissue product that can be packaged in the same way as a non-moisturizing tissue product. With this tissue paper product in which a web obtained by folding and laminating in a pop-up configuration a plurality of sheets of tissue paper containing a moisturizing agent is stored in a rectangular-shaped paper box having an outlet on an upper surface thereof, the problem of the tissue paper is solved by this tissue paper product in which the number of plies is 2.Type: GrantFiled: August 31, 2018Date of Patent: October 4, 2022Assignee: DAIO PAPER CORPORATIONInventor: Shuta Yasui
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Publication number: 20220127790Abstract: To provide a toilet paper that provides an excellent thick feeling, has excellent water-disintegrability, has sufficient softness, provides a security feeling to a human body during use, and is environmentally friendly. The problem is solved by a 3-ply or 4-ply toilet paper, each ply having a basis weight of 10.5 to 12.5 g/m2, containing oxygen-pulped and non-chlorine-bleached softwood kraft pulp in an amount of 50 to 100% by mass of fibers, containing a cationic fatty acid amide-based softener, each ply having a paper thickness of 80 to 100 ?m, having a paper thickness of 320 to 400 ?m as the entire toilet paper, and having water-disintegrability of 10 seconds or less.Type: ApplicationFiled: February 12, 2020Publication date: April 28, 2022Applicant: Daio Paper CorporationInventors: Shuta YASUI, Minoru IWASAKI
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Publication number: 20220106740Abstract: To provide a non-moisturizing high-grade type tissue paper having excellent softness. The problem is solved by a 3-ply tissue paper having a basis weight of 12.0 g/m2 or more per ply, having a paper thickness of 200 to 265 ?m for three plies, having a water content of 4.0 to 9.0% by mass, containing 0.15 to 0.45% by mass of an oily component to be extracted with diethyl ether, and having a bending rigidity of less than 0.006 gf·cm/cm in CD (Cross Direction) and a bending recovery force of less than 0.005 gf·cm/cm in CD.Type: ApplicationFiled: January 30, 2020Publication date: April 7, 2022Inventors: Noritada TOMIOKA, Minoru IWASAKI, Shuta YASUI, Sachiko TAKAHASHI, Kazuo HOKKIRIGAWA, Takeshi YAMAGUCHI, Kei SHIBATA
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Patent number: 11280050Abstract: The present invention is directed to a two-ply tissue paper including a polyol-containing moisturizer and having excellent softness, smoothness, and strength. In various embodiment, the two-ply tissue paper of the present invention has a basis weight of 16.0 to 25.0 g/m2 per ply, a two-ply paper thickness of 145 to 180 ?m, a dry tensile strength of 120 to 200 cN/25 mm in a lateral direction, a dry tensile strength of 275 to 450 cN/25 mm in a longitudinal direction, a wet tensile strength of 60 to 130 cN/25 mm in the lateral direction, a difference of 40 cN/25 mm or more between the dry tensile strength in the lateral direction and the wet tensile strength in the lateral direction and a value of (wet tensile strength in lateral direction)/(dry tensile strength in lateral direction) of 0.60 to 0.75, and an elongation percentage of 13.0 to 18.0% in the longitudinal direction.Type: GrantFiled: February 20, 2019Date of Patent: March 22, 2022Assignee: Daio Paper CorporationInventor: Shuta Yasui
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Publication number: 20220049426Abstract: Provided is a moisturized tissue excellent in strength and snot wiping property. In the moisturized tissue paper, a paper thickness is 220 to 330 ?m, a basis weight is 15 to 18 g/m2 per ply, a proportion of NBKP in the pulp combination is more than 70 mass %, a chemical solution content is 26 to 32 mass %, an arithmetic mean curvature at a peak point of an outer surface in an unpressurized state (Spc (1)) is 4.0 to 4.8 (1/mm), and a developed area ratio at an interface on the outer surface (Sdr) is 0.020 to 0.030 (?).Type: ApplicationFiled: November 22, 2019Publication date: February 17, 2022Applicant: Daio Paper CorporationInventors: Shuta YASUI, Minoru IWASAKI
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Publication number: 20210401242Abstract: Provided is toilet paper which is excellent in thickness feeling and water disintegrability, has sufficient softness, gives a sense of security for human bodies during use, and is environmentally friendly. Toilet paper has three or four plies. The basis weight is 12.5 to 15.5 g/m2 per ply. 80 to 100 mass % of fiber is softwood kraft pulp that is subjected to oxygen pulping and is not bleached with chlorine. The toilet paper contains a cationic fatty acid amide-based softener, and has a paper thickness of 120 to 150 ?m per ply, a paper thickness of 400 to 600 ?m as a whole of the toilet paper, and a water disintegrability of 10 seconds or less.Type: ApplicationFiled: November 22, 2019Publication date: December 30, 2021Applicant: Daio Paper CorporationInventors: Shuta YASUI, Minoru IWASAKI
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Publication number: 20210261289Abstract: A sanitary tissue package comprising a bundle of folded sanitary tissues stacked in a pop-up type and a film overwrap-wrapping the bundle of the folded sanitary tissues, where the sanitary tissue package is excellent in sanitary tissue take-out property and prevention of falling.Type: ApplicationFiled: June 12, 2019Publication date: August 26, 2021Inventor: Shuta YASUI
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Publication number: 20210172925Abstract: To provide tissue paper excellent in softness and smoothness. In tissue paper that is two-ply non-moisturizing tissue paper to which no chemical solution is applied, a basis weight per sheet is 10.0 to 18.0 g/m2, the thickness of two plies is 100 to 240 ?m, a dry tensile strength in the paper horizontal direction is 70 to 180 cN/25 mm, a wet tensile strength in the paper horizontal direction is 25 to 55 cN/25 mm, and a free sensory evaluation value Ef calculated according to the following Equation 1 is 3.7 to 6.6, and a slip sensory evaluation value Es calculated according to the following Equation 2 is 5.0 to 8.2. Free sensory evaluation value Ef=?2.879×(dry tensile strength in paper horizontal direction)+6.55×(wet tensile strength in paper horizontal direction)+5.36??(Equation 1) Slip sensory evaluation value Es=?8.80×(dynamic friction coefficient)?0.41×(arithmetic mean surface roughness)+13.Type: ApplicationFiled: October 29, 2018Publication date: June 10, 2021Inventors: Shuta YASUI, Hidenori YOROZU, Kazuo HOKKIRIGAWA, Takeshi YAMAGUCHI, Kei SHIBATA, Naoya YAMAI, Risa NAKANE
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Publication number: 20210059484Abstract: To provide toilet paper which is hardly torn in wiping other than the human body and is excellent in texture at the time of wiping humans. To solve such problem, in three or four-ply toilet paper, a basis weight per ply of the toilet paper is 14.9 g/m2 or more and 16.2 g/m2 or less, an overall paper thickness is 297 ?m or more and 435 ?m or less, a dry tensile strength in a longitudinal direction is 451 cN/25 mm or more and 1001 cN/25 mm or less, and a ratio of a wet tensile strength in a horizontal direction to a dry tensile strength in a horizontal direction is 0.09 or more.Type: ApplicationFiled: December 11, 2018Publication date: March 4, 2021Applicant: Daio Paper CorporationInventor: Shuta YASUI
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Publication number: 20200407922Abstract: To provide a moisturizing type tissue paper having excellent softness, smoothness, and strength. The problem is solved by a two-ply tissue paper containing a polyol-containing moisturizer. The two-ply tissue paper has a basis weight of 16.0 to 25.0 g/m2 per ply, a two-ply paper thickness of 145 to 180 ?m, a dry tensile strength of 120 to 200 cN/25 mm in a lateral direction, a dry tensile strength of 275 to 450 cN/25 mm in a longitudinal direction, a wet tensile strength of 60 to 130 cN/25 mm in the lateral direction, a difference of 40 cN/25 mm or more between the dry tensile strength in the lateral direction and the wet tensile strength in the lateral direction and a value of (wet tensile strength in lateral direction)/(dry tensile strength in lateral direction) of 0.60 to 0.75, and an elongation percentage of 13.0 to 18.0% in the longitudinal direction.Type: ApplicationFiled: February 20, 2019Publication date: December 31, 2020Applicant: Daio Paper CorporationInventor: Shuta YASUI
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Patent number: 10844549Abstract: In one or more embodiments, the present invention is directed to a moisturizing tissue paper having excellent softness, smoothness, and strength. In various embodiments, the present invention provides a two-ply tissue paper containing a moisturizing agent having a basis weight per ply of 16.6 to 17.9 g/m2, a two-ply paper thickness of 143 to 159 ?m, and containing a polyol, hyaluronic acid, a fatty acid ester-based compound, and a fatty acid amide-based compound.Type: GrantFiled: May 23, 2017Date of Patent: November 24, 2020Assignee: Daio Paper CorporationInventor: Shuta Yasui
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Publication number: 20200299901Abstract: A moisturizing agent-containing tissue paper having excellent “soft texture” and “fullness” and hardly causing a user to feel a feeling of applied chemicals, at the low production cost. The solution is a two-ply tissue paper having a basis weight of 11.8 g/m2 or more and less than 13.2 g/m2 per ply, having a paper thickness of more than 122 ?m and less than 138 ?m for the two-ply, and containing chemicals having a mass ratio of more than 1:0.03 and less than 1:0.25 between glycerin and 1,3-propanediol in an amount of 1.0 g/m2 or more and less than 2.2 g/m2.Type: ApplicationFiled: December 21, 2016Publication date: September 24, 2020Applicant: Daio Paper CorporationInventor: Shuta Yasui
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Publication number: 20200290792Abstract: A moisturizing tissue product that can be packaged in the same way as a non-moisturizing tissue product. With this tissue paper product in which a web obtained by folding and laminating in a pop-up configuration a plurality of sheets of tissue paper containing a moisturizing agent is stored in a rectangular-shaped paper box having an outlet on an upper surface thereof, the problem of the tissue paper is solved by this tissue paper product in which the number of plies is 2.Type: ApplicationFiled: August 31, 2018Publication date: September 17, 2020Applicant: DAIO PAPER CORPORATIONInventor: Shuta YASUI
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Publication number: 20200277736Abstract: A moisturizing tissue product that can be packaged in the same way as a non-moisturizing tissue product. With this tissue paper product, in which a web obtained by folding and laminating in a pop-up configuration a plurality of sheets of tissue paper containing a moisturizing agent is stored in a rectangular-shaped paper box having an outlet on an upper surface thereof, the problem of the tissue paper is solved by this tissue paper product in which the number of plies is 2.Type: ApplicationFiled: August 31, 2018Publication date: September 3, 2020Applicant: DAIO PAPER CORPORATIONInventor: Shuta YASUI