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US 12,285,143 B2Granted
Wiping sheet and method for producing wiping sheet
AssigneeDaio Paper Corporation
InventorShoko Yamashita
Life of this patent
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Abstract
A wiping sheet having a plurality of nonwoven fabrics that are stacked and bonded together includes cellulose nanofiber that is included in an applied part where adjacent nonwoven fabrics among the nonwoven fabrics are bonded. At least one of the adjacent nonwoven fabrics is a spunlace nonwoven fabric.
Claims8
A wiping sheet, comprising:
- a plurality of nonwoven fabrics that are stacked and bonded together, wherein adjacent nonwoven fabrics are bonded at an applied part,
- a bond layer applied between adjacent nonwoven fabrics that is provided in the applied part, wherein the bond layer comprises cellulose nanofiber, wherein the cellulose nanofiber contains an anti-aggregation agent,
- wherein at least one of the adjacent nonwoven fabrics is a spunlace nonwoven fabric.
A method for producing a wiping sheet, comprising:
- applying cellulose nanofiber solution of a concentration of 0.5% to 2.0% to a portion of a surface of a first nonwoven fabric including at least a periphery of the first nonwoven fabric;
- superposing the first nonwoven fabric to which the cellulose nanofiber solution is applied and a second nonwoven fabric such that the surface is in contact with the second nonwoven fabric;
- and
- drying including thermal drying and bonding of the first nonwoven fabric and the second nonwoven fabric that have been superposed in the superposing,
- wherein at least one of the first nonwoven fabric and the second nonwoven fabric is a spunlace nonwoven fabric.
2 more elements
Dependencies are inferred from the claim text.