10.13.15
Masashi Uda, Kagawa, Japan; Toru Oba, Kagawa, Japan; and Satoshi Mizutani, Kagawa, Japan. Assigned to Unicharm Corporation, Ehime, Japan.
Filed: 3/17/11
Issued: 9/8/15
Patented is an absorbent article comprising: an absorber capable of absorbing a body fluid of a user, a liquid-permeable sheet covering one surface of said absorber and allowing a body fluid of the user to pass through, and a liquid-impermeable sheet covering another surface of said absorber and disallowing a body fluid of the user to pass through, wherein the color of said liquid-permeable sheet has an L* value of 88 or more, an a* value of 0 to 0.3 and a b* value of −8 to 0 in the L*a*b* color system, and the color of said absorber has a b* value of 1 to 5 and an L* value of 93 or more in the L*a*b* color system, wherein said liquid permeable sheet is a nonwoven fabric comprising fibers having a three-dimensional crimp shape and having an average fiber angle of 75° or less, wherein the average fiber angle is an average value of acute intersection angles out of acute intersection angles inclusive of 90° and obtuse intersection angles larger than 90° at the intersection with a line perpendicular to the horizontal plane, wherein the fibers have a blue tint controlled by controlling an amount of a blue pigment attached to the fibers or by causing a blue pigment and a pigment except for blue color pigment to attach to and/or be contained in the fibers, and wherein the fibers are annealed.
Filed: 3/17/11
Issued: 9/8/15
Patented is an absorbent article comprising: an absorber capable of absorbing a body fluid of a user, a liquid-permeable sheet covering one surface of said absorber and allowing a body fluid of the user to pass through, and a liquid-impermeable sheet covering another surface of said absorber and disallowing a body fluid of the user to pass through, wherein the color of said liquid-permeable sheet has an L* value of 88 or more, an a* value of 0 to 0.3 and a b* value of −8 to 0 in the L*a*b* color system, and the color of said absorber has a b* value of 1 to 5 and an L* value of 93 or more in the L*a*b* color system, wherein said liquid permeable sheet is a nonwoven fabric comprising fibers having a three-dimensional crimp shape and having an average fiber angle of 75° or less, wherein the average fiber angle is an average value of acute intersection angles out of acute intersection angles inclusive of 90° and obtuse intersection angles larger than 90° at the intersection with a line perpendicular to the horizontal plane, wherein the fibers have a blue tint controlled by controlling an amount of a blue pigment attached to the fibers or by causing a blue pigment and a pigment except for blue color pigment to attach to and/or be contained in the fibers, and wherein the fibers are annealed.