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US 11,229,583 B2Granted
Multilayer nanofiber sheet and adhesion method for same
AssigneeKao Corporation
InventorsNaomi Amari, Takahiro Hirano
Life of this patent
Estimating the term…
Abstract
A multilayer nanofiber sheet (10) includes: a nanofiber layer (11) including nanofibers which comprise a water-soluble polymer compound; a substrate layer (12) arranged on one surface side of the nanofiber layer (11); and a water-insoluble porous layer (13) arranged on the other surface side of the nanofiber layer (11). The three layers are layered, and the multilayer nanofiber sheet is used in a state in which a surface thereof on the porous layer side is arranged so as to face a surface of an object. Preferably, the three layers are layered in a fixed state. Preferably, the porous layer (13) has a thickness of from 3 to 1000 μm.
Claims20
A multilayer nanofiber sheet comprising:
- a water-soluble nanofiber layer including nanofibers which comprise a water-soluble polymer compound;
- a substrate layer arranged on one surface side of the water-soluble nanofiber layer;
- and
- a water-insoluble porous layer having a thickness of from 3 to 1000 μm arranged on the other surface side of the water-soluble nanofiber layer, the porous layer having a multitude of pores, the pores of the porous layer have an open-cell structure,
- wherein:
- the three layers are layered;
- the multilayer nanofiber sheet is used in a state in which a surface thereof on the porous layer side is arranged so as to face a surface of an object;
- and
- the water-soluble polymer compound is pullulan, mucopolysaccharide, pectin, xylan, lignin, glucomannan, galacturonic acid, psyllium seed gum, tamarind seed gum, gum arabic, tragacanth gum, water-soluble soybean polysaccharides, alginic acid, carrageenan, laminaran, agar (agarose), fucoidan, or methyl cellulose that dissolves by water, and
- adhesion of the multilayer nanofiber sheet to the object is achieved as the water-soluble polymer dissolves and penetrates through the water-insoluble porous layer, by moistening the multilayer nanofiber sheet with a lotion, thereby allowing the nanofiber sheet to adhere to the surface of the object;
- wherein the water-soluble nanofiber layer and the water-insoluble porous layer are in direct contact with one another;
- wherein the outer surface of the water-insoluble porous layer constitutes an outer surface of the multilayer nanofiber sheet;
- wherein the substrate layer is water-insoluble;
- and
- wherein a value of the air permeability of the substrate layer in air resistance is 30 s/100 ml or greater.
12 more elements
A multilayer nanofiber sheet comprising:
- a water-soluble nanofiber layer including nanofibers which comprise a water-soluble polymer compound;
- is pullulan, mucopolysaccharide, pectin, xylan, lignin, glucomannan, galacturonic acid, psyllium seed gum, tamarind seed gum, gum arabic, tragacanth gum, water-soluble soybean polysaccharides, alginic acid, carrageenan, laminaran, agar (agarose), fucoidan, or methyl cellulose,
- a substrate layer arranged on one surface side of the water-soluble nanofiber layer;
- and
- a water-insoluble porous layer having a thickness of from 3 to 1000 μm arranged on the other surface side of the water-soluble nanofiber layer, the porous layer having a multitude of pores, the pores of the porous layer have an open-cell structure,
- wherein:
- the three layers are layered;
- the multilayer nanofiber sheet is used in a state in which a surface thereof on the porous layer side is arranged so as to face a surface of an object;
- and
- the fixed state of the three layers constituting the multilayer nanofiber sheet is maintained (a) before use of the multilayer nanofiber sheet, and (b) after the multilayer nanofiber sheet has been moistened with a lotion and the water-soluble nanofiber layer has dissolved;
- wherein a basis weight of the water-soluble nanofiber layer is 100 g/m2 or less;
- and
- wherein a lotion is applied on the multilayer nanofiber sheet in an amount of 0.2 g/800 mm2 or greater.
10 more elements
A multilayer nanofiber sheet comprising:
- wherein the multilayer nanofiber sheet comprises:
- a water-soluble nanofiber layer including nanofibers which comprise a water-soluble polymer compound, is pullulan, mucopolysaccharide, pectin, xylan, lignin, glucomannan, galacturonic acid, psyllium seed gum, tamarind seed gum, gum arabic, tragacanth gum, water-soluble soybean polysaccharides, alginic acid, carrageenan, laminaran, agar (agarose), fucoidan, or methyl cellulose, a substrate layer arranged on one surface side of the water-soluble nanofiber layer, and a water-insoluble porous layer having a thickness of from 3 to 1000 μm arranged on the other surface side of the water-soluble nanofiber layer,
- wherein:
- the three layers are layered, and the multilayer nanofiber sheet is used in a state in which a surface thereof on the porous layer side is arranged so as to face a surface of an object, and
- whereupon, bringing a surface of the multilayer nanofiber sheet on the porous layer side into contact with a surface of an object in a state where the multilayer nanofiber sheet's surface on the porous layer side is moistened with a liquid substance, the multilayer nanofiber sheet's surface adheres to the object's surface as the water-soluble polymer dissolves and penetrates through the water-insoluble porous layer, thereby allowing the nanofiber sheet to adhere to the surface of the object;
- OR
- wherein the multilayer nanofiber sheet comprises:
- a water-soluble nanofiber layer including nanofibers which comprise a water-soluble polymer compound, is pullulan, mucopolysaccharide, pectin, xylan, lignin, glucomannan, galacturonic acid, psyllium seed gum, tamarind seed gum, gum arabic, tragacanth gum, water-soluble soybean polysaccharides, alginic acid, carrageenan, laminaran, agar (agarose), fucoidan, or methyl cellulose, a substrate layer arranged on one surface side of the water-soluble nanofiber layer, and a water-insoluble porous layer having a thickness of from 3 to 1000 μm arranged on the other surface side of the water-soluble nanofiber layer,
- wherein:
- the three layers are layered, and the multilayer nanofiber sheet is used in a state in which a surface thereof on the porous layer side is arranged so as to face a surface of an object, and
- whereupon, bringing a surface of the multilayer nanofiber sheet on the porous layer side into contact with a surface of an object in a state where the object's surface is moistened with a lotion, the multilayer nanofiber sheet's surface adheres to the object's surface as the water-soluble polymer dissolves and penetrates through the water-insoluble porous layer, thereby allowing the nanofiber sheet to adhere to the surface of the object;
- wherein a basis weight of the water-soluble nanofiber layer is 100 g/m2 or less;
- and
- wherein a lotion is applied on the multilayer nanofiber sheet in an amount of 0.2 g/800 mm2 or greater.
11 more elements
A multilayer nanofiber sheet comprising:
- wherein the multilayer nanofiber sheet comprises:
- a water-soluble nanofiber layer including nanofibers which comprise a water-soluble polymer compound, is pullulan, mucopolysaccharide, pectin, xylan, lignin, glucomannan, galacturonic acid, psyllium seed gum, tamarind seed gum, gum arabic, tragacanth gum, water-soluble soybean polysaccharides, alginic acid, carrageenan, laminaran, agar (agarose), fucoidan, or methyl cellulose, a substrate layer arranged on one surface side of the water-soluble nanofiber layer, and a water-insoluble porous layer having a thickness of from 3 to 1000 μm arranged on the other surface side of the water-soluble nanofiber layer,
- wherein:
- the three layers are layered, and the multilayer nanofiber sheet is used in a state in which a surface thereof on the porous layer side is arranged so as to face a surface of an object;
- and
- whereupon, bringing a surface of the multilayer nanofiber sheet on the porous layer side into contact with a surface of an object in a state where the multilayer nanofiber sheet's surface on the porous layer side is moistened with a lotion, the multilayer nanofiber sheet's surface adheres to the object's surface as the water-soluble polymer dissolves and penetrates through the water-insoluble porous layer, thereby allowing the nanofiber sheet to adhere to the surface of the object, and
- wherein the fixed state of the three layers constituting the multilayer nanofiber sheet is maintained (a) before use of the multilayer nanofiber sheet, and (b) after the multilayer nanofiber sheet has been moistened with a lotion and the water-soluble nanofiber layer has dissolved;
- OR
- wherein the multilayer nanofiber sheet comprises:
- a water-soluble nanofiber layer including nanofibers which comprise a water-soluble polymer compound, is pullulan, mucopolysaccharide, pectin, xylan, lignin, glucomannan, galacturonic acid, psyllium seed gum, tamarind seed gum, gum arabic, tragacanth gum, water-soluble soybean polysaccharides, alginic acid, carrageenan, laminaran, agar (agarose), fucoidan, or methyl cellulose, a substrate layer arranged on one surface side of the water-soluble nanofiber layer, and a water-insoluble porous layer having a thickness of from 3 to 1000 μm arranged on the other surface side of the water-soluble nanofiber layer,
- wherein:
- the three layers are layered, and the multilayer nanofiber sheet is used in a state in which a surface thereof on the porous layer side is arranged so as to face a surface of an object, and
- whereupon, bringing a surface of the multilayer nanofiber sheet on the porous layer side into contact with a surface of an object in a state where the object's surface is moistened with a lotion, the multilayer nanofiber sheet's surface adheres to the object's surface as the water-soluble polymer dissolves and penetrates through the water-insoluble porous layer, thereby allowing the nanofiber sheet to adhere to the surface of the object, and
- wherein the fixed state of the three layers constituting the multilayer nanofiber sheet is maintained (a) before use of the multilayer nanofiber sheet, and (b) after the multilayer nanofiber sheet has been moistened with a lotion and the water-soluble nanofiber layer has dissolved,
- wherein a basis weight of the water-soluble nanofiber layer is 100 g/m2 or less;
- and
- wherein a liquid substance is applied on the multilayer nanofiber sheet in an amount of 0.2 g/800 mm2 or greater.
14 more elements
A multilayer nanofiber sheet comprising:
- wherein the multilayer nanofiber sheet comprises:
- a water-soluble nanofiber layer including nanofibers which comprise a water-soluble polymer compound, is pullulan, mucopolysaccharide, pectin, xylan, lignin, glucomannan, galacturonic acid, psyllium seed gum, tamarind seed gum, gum arabic, tragacanth gum, water-soluble soybean polysaccharides, alginic acid, carrageenan, laminaran, agar (agarose), fucoidan, or methyl cellulose, a substrate layer arranged on one surface side of the water-soluble nanofiber layer, and a water-insoluble porous layer having a thickness of from 3 to 1000 μm arranged on the other surface side of the water-soluble nanofiber layer,
- wherein:
- the three layers are layered, and the multilayer nanofiber sheet is used in a state in which a surface thereof on the porous layer side is arranged so as to face a surface of an object, and
- whereupon, bringing a surface of the multilayer nanofiber sheet on the porous layer side into contact with a surface of an object in a state where the multilayer nanofiber sheet's surface on the porous layer side is moistened with a lotion, the multilayer nanofiber sheet's surface adheres to the object's surface as the water-soluble polymer dissolves and penetrates through the water-insoluble porous layer, thereby allowing the nanofiber sheet to adhere to the surface of the object, while preventing excessive solution from being supplied to the surface of the object in order to promote a comfortable feel;
- OR
- wherein the multilayer nanofiber sheet comprises:
- a water-soluble nanofiber layer including nanofibers which comprise a water-soluble polymer compound, is pullulan, mucopolysaccharide, pectin, xylan, lignin, glucomannan, galacturonic acid, psyllium seed gum, tamarind seed gum, gum arabic, tragacanth gum, water-soluble soybean polysaccharides, alginic acid, carrageenan, laminaran, agar (agarose), fucoidan, or methyl cellulose, a substrate layer arranged on one surface side of the water-soluble nanofiber layer, and a water-insoluble porous layer having a thickness of from 3 to 1000 μm arranged on the other surface side of the water-soluble nanofiber layer,
- wherein:
- the three layers are layered, and the multilayer nanofiber sheet is used in a state in which a surface thereof on the porous layer side is arranged so as to face a surface of an object, and
- whereupon, bringing a surface of the multilayer nanofiber sheet on the porous layer side into contact with a surface of an object in a state where the object's surface is moistened with a lotion, the multilayer nanofiber sheet's surface adheres to the object's surface as the water-soluble polymer dissolves and penetrates through the water-insoluble porous layer, thereby allowing the nanofiber sheet to adhere to the surface of the object, while preventing excessive solution from being supplied to the surface of the object in order to promote a comfortable feel;
- wherein a basis weight of the water-soluble nanofiber layer is 100 g/m2 or less;
- and
- wherein a lotion is applied on the multilayer nanofiber sheet in an amount of 0.2 g/800 mm2 or greater.
11 more elements
Dependencies are inferred from the claim text.