Tissue paper and method of evaluating the same

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United States of America Patent

PATENT NO 11692993
APP PUB NO 20210172925A1
SERIAL NO

16762896

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Abstract

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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 μm, 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.

description='In-line Formulae' end='lead'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)description='In-line Formulae' end='tail'

description='In-line Formulae' end='lead'Slip sensory evaluation value Es=−8.80×(dynamic friction coefficient)−0.41×(arithmetic mean surface roughness)+13.58  (Equation 2)description='In-line Formulae' end='tail'

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Patent Owner(s)

Patent OwnerAddress
TOHOKU UNIVERSITY2-1-1 KATAHIRA AOBA-KU SENDAI-SHI MIYAGI 9808577 ?9808577
DAIO PAPER CORPORATION2-60 MISHIMAKAMIYA-CHO SHIKOKUCHUO-SHI EHIME 7990492 ?7990492

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hokkirigawa, Kazuo Sendai, JP 50 304
Nakane, Risa Sendai, JP 1 1
Shibata, Kei Sendai, JP 10 22
Yamaguchi, Takeshi Sendai, JP 387 3360
Yamai, Naoya Sendai, JP 1 1
Yasui, Shuta Fujinomiya, JP 20 56
Yorozu, Hidenori Tokyo, JP 27 454

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