US 12,390,376 B2
Multi-layer absorbent cores and methods of manufacture
Man Li, Beijing (CN); TongTong Zhang, Beijing (CN); Yan Wang, Beijing (CN); JinHee Lee, Shanghai (CN); and Qingchun Lu, Beijing (CN)
Assigned to Kimberly-Clark Worldwide, Inc., Neenah, WI (US)
Appl. No. 16/969,221
Filed by KIMBERLY-CLARK (CHINA) CO., LTD., Shanghai (CN)
PCT Filed Feb. 28, 2018, PCT No. PCT/CN2018/077509
§ 371(c)(1), (2) Date Aug. 12, 2020,
PCT Pub. No. WO2019/165590, PCT Pub. Date Sep. 6, 2019.
Prior Publication US 2020/0405548 A1, Dec. 31, 2020
Int. Cl. A61F 13/539 (2006.01); A61F 13/45 (2006.01); A61F 13/496 (2006.01); A61F 13/53 (2006.01)
CPC A61F 13/539 (2013.01) [A61F 2013/4587 (2013.01); A61F 13/4963 (2013.01); A61F 2013/530182 (2013.01); A61F 2013/530481 (2013.01); A61F 2013/53908 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An absorbent product comprising:
a liquid permeable bodyside liner;
a liquid impermeable barrier layer; and
an absorbent body positioned between the liquid permeable bodyside and the liquid impermeable barrier layer, the absorbent body comprising:
a top nonwoven layer comprising synthetic fibers forming a liquid permeable web material;
a bottom nonwoven layer comprising synthetic fibers forming a web material;
a fibrous nonwoven through-air-bonded-carded web (TABCW) reinforcement layer disposed between the top layer and the bottom layer where the top layer and the bottom layer are bonded directly together and enclose the reinforcement layer, the reinforcement layer having absorbent material embedded within fibers of the reinforcement layer;
a first absorbent layer disposed between the reinforcement layer and the bottom layer, the first absorbent layer comprising absorbent material which comprises substantially only superabsorbent material;
a second absorbent layer disposed between the top layer and the reinforcement layer, the second absorbent layer comprising a mixed layer of superabsorbent material and fibrous absorbent material; and
adhesive disposed between the top layer and the second absorbent layer, between the second absorbent layer and the reinforcement layer, and between the first absorbent layer and the bottom layer.