US 7,473,817 B1
Absorbent article
Masahito Tanaka, Tochigi-ken (Japan); Mitsugu Hamajima, Tochigi-ken (Japan); Noriko Sakamoto, Tochigi-ken (Japan); Futoshi Teranishi, Tochigi-ken (Japan); and Minoru Nakanishi, Tochigi-ken (Japan)
Assigned to Kao Corporation, Tokyo (Japan)
Filed on May 19, 2000, as Appl. No. 9/573,893.
Claims priority of application No. 11-140652 (JP), filed on May 20, 1999; and application No. 2000-013558 (JP), filed on Jan. 21, 2000.
Int. Cl. A61F 13/15 (2006.01); B32B 27/12 (2006.01); B32B 5/18 (2006.01); B32B 5/24 (2006.01); B32B 5/26 (2006.01)
U.S. Cl. 604—358  [604/359; 604/365; 604/378; 604/385.23; 442/121; 442/370; 442/373; 442/381; 442/389] 28 Claims
OG exemplary drawing
 
1. An absorbent article comprising a liquid permeable top layer, a liquid impermeable leakproof layer, and a liquid retentive absorbent layer disposed there between, wherein said liquid retentive absorbent layer comprises an odor-controlling member containing components (a), (b) and (c):
(a) a synthetic hydrophilic fiber having an average fiber diameter of 0.1 to 10 μm that does not swell with water, or a crosslinked cellulose fiber that has a centrifugal water retention of 0.7 g/g or less as measured after equilibrium water absorption and swelling followed by centrifugation,
(b) an odor-controlling agent and
(c) a superabsorbent polymer, and
wherein said odor-controlling member contains a layer or web of component (a) having dispersed therein said superabsorbent polymer (c), wherein the odor-controlling agent (b) is fixedly adhered to the component (a) layer via the superabsorbent polymer (c);
wherein said odor-controlling member is an odor-controlling sheet comprising 20 to 80% by weight of said component (a), 10 to 60% by weight of said component (b), and 10 to 60% by weight of said component (c) superabsorbent polymer, and
wherein said odor-controlling sheet has a Klemm's water absorption at 1 minute of 40 mm or more as measured according to JIS P 8141 using physiological saline.