Three dimensional structures useful as cleaning sheets
First Claim
1. A macroscopically three-dimensional cleaning sheet comprising:
- at least one layer of a nonwoven substrate, said cleaning sheet having first and second outward surfaces, capable of contacting a surface to be cleaned, wherein said first outward surface has a macroscopic three-dimensional pattern, said macroscopic three-dimensional pattern being defined by peaks and valleys such that said first outward surface has an Average Peak to Peak Distance of from about 1 mm to about 20 mm and a Surface Topography Index from about 0.01 to about 10 and an Average Height Differential of at least about 1 mm, said cleaning sheet comprising an additive for providing improved adhesion of soil to said cleaning sheet.
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Abstract
Disclosed are cleaning sheets having substantial macroscopic three-dimensionality. Optionally, the macroscopically three-dimensional cleaning sheets can comprise a contractable material (e.g., a scrim material), which when heated and then cooled contracts so as to provide a macroscopic, three-dimensional structure. Macroscopic three-dimensionality is described in terms of “average peak-to-peak distance” and “surface topography index”, as well in terms of “average height differential”. Also disclosed are cleaning implements comprising a handle and the described cleaning sheets. Processes for the sheets, benefits of the processes, and articles of manufacture are also disclosed.
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Citations
72 Claims
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1. A macroscopically three-dimensional cleaning sheet comprising:
at least one layer of a nonwoven substrate, said cleaning sheet having first and second outward surfaces, capable of contacting a surface to be cleaned, wherein said first outward surface has a macroscopic three-dimensional pattern, said macroscopic three-dimensional pattern being defined by peaks and valleys such that said first outward surface has an Average Peak to Peak Distance of from about 1 mm to about 20 mm and a Surface Topography Index from about 0.01 to about 10 and an Average Height Differential of at least about 1 mm, said cleaning sheet comprising an additive for providing improved adhesion of soil to said cleaning sheet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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35. A macroscopically three-dimensional cleaning sheet for removing particulates from a hard surface said cleaning sheet comprising:
- a layer of a nonwoven substrate said layer of nonwoven substrate having first and second outward surfaces capable of contacting a hard surface to be cleaned, wherein said first outward surface has a macrosconic three-dimensional pattern, said macrosconic three-dimensional pattern being defined by peaks and valleys such that said first outward surface has an Average Peak to Peak Distance of from about 1 to about 20 mm and an Average Height Differential of at least about 1 mm.
- View Dependent Claims (36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56)
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57. A macroscopically three-dimensional, hydroentangled, nonwoven cleaning sheet comprising
at least two fibrous layers; - wherein said fibrous layers are hydroentangled with each other and wherein said fibrous layers comprise fibers made of a material selected from the group consisting of natural cellulosic fibers, polyolefins, polyesters, polyamides, synthetic cellulosic fibers, cotton fibers, and mixtures thereof;
wherein said cleaning sheet has first and second outward surfaces capable of contacting a surface to be cleaned, wherein said first outward surface has a macroscopic three-dimensional pattern, said macroscopic three-dimensional pattern being defined by peaks and valleys such that said first outward surface has an Average Peak to Peak Distance of from about 3 mm to about 16 mm, and an Average Height Differential of at least about 1 mm. - View Dependent Claims (58, 59, 60, 61, 62, 63, 64, 65)
- wherein said fibrous layers are hydroentangled with each other and wherein said fibrous layers comprise fibers made of a material selected from the group consisting of natural cellulosic fibers, polyolefins, polyesters, polyamides, synthetic cellulosic fibers, cotton fibers, and mixtures thereof;
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66. A macroscopically three-dimensional, hydroentangled, nonwoven cleaning sheet comprising:
at least two fibrous layers and a scrim material;
wherein said fibrous layers are hydroentangled with said scrim material and wherein said fibrous layers comprise fibers made of a material selected from the group consisting of natural cellulosic fibers, polyolefins, polyesters, polyamides, synthetic cellulosic fibers, cotton fibers, and mixtures thereof;
wherein said cleaning sheet has first and second outward surfaces capable of contacting a surface to be cleaned, wherein said first outward surface has a macroscopic three-dimensional pattern, said macroscopic three-dimensional pattern being defined by peaks and valleys such that said first outward surface has an Average Peak to Peak Distance of from about 4 mm to about 12 mm, and an Average Height Differential of from about 1 to about 3 mm.- View Dependent Claims (67, 68, 69, 70, 71, 72)
Specification