Multi-layered absorbent article
AssigneeDSG Technology Holdings Ltd.
InventorsGene Varona, Patrick King Yu Tsang, Andrew Wright
Life of this patent
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Abstract
A thin absorbent composite is provided wherein a nonwoven support sheet is hydro-entangled with a carded fiber web to provide a nonwoven substrate. The nonwoven substrate is coated with an absorbent layer comprising microfibrillated cellulose-coated superabsorbent polymer particles. A cover layer is placed above the absorbent layer to provide the absorbent composite. A process for manufacturing the absorbent composite and an absorbent article containing the absorbent composite are also provided.
Claims20
An absorbent composite comprising, a nonwoven substrate, an absorbent layer, and a cover layer, wherein the nonwoven substrate comprises a nonwoven support sheet hydro-entangled with a carded fiber web;
- wherein the absorbent layer comprises super absorbent polymer particles coated with microfibrillated cellulose;
- wherein the cover layer substantially co-extensive with the absorbent layer and is not mechanically or chemically treated to adhere to the absorbent layer, and wherein no adhesive is used to bind the cover layer to the absorbent layer.
A method for producing an absorbent composite comprising carding of fibers to form a carded web, placing the carded web on top of a nonwoven support sheet, mechanically joining the carded web with the nonwoven supporting sheet through hydro-entanglement to form a nonwoven substrate, preparing an WC-coated SAP slurry by combining a mixture of SAP slurry with a mixture of WC slurry, applying the WC-coated SAP slurry to the nonwoven substrate, withdrawing excess liquid from the nonwoven substrate to form an absorbent layer, placing a cover layer on top of the WC-coated SAP surface of the absorbent layer, and drying the composite, wherein the cover layer is not mechanically or chemically treated to adhere to the absorbent layer.
An absorbent article comprising a fluid-permeable topsheet, a fluid-impermeable backsheet, and an acquisition distribution layer and absorbent composite disposed between the topsheet and backsheet, wherein the absorbent composite comprises a hydro-entangled nonwoven substrate, an absorbent layer, and a cover layer, wherein the cover layer is not mechanically or chemically treated to adhere to the absorbent layer, and wherein no adhesive is used to bind the cover layer to the absorbent layer.
Dependencies are inferred from the claim text.