The present invention provides a laminated nonwoven fabric achieving both handling properties during manufacturing and use and adherence to a skin surface at a high level particularly when used for a face mask. The laminated nonwoven fabric includes a nonwoven fabric layer (A) and a nonwoven fabric layer (B). The nonwoven fabric layer (A) is formed from a fiber A having a single fiber diameter of 50 nm or more and 800 nm or less, and the nonwoven fabric layer (B) is formed from a fiber B having a single fiber diameter of 3 μm or more and 30 μm or less. The nonwoven fabric layer (B) includes 15 to 40% by mass of a fiber B1 to all of the fibers constituting the nonwoven fabric layer (B), the fiber having tensile strength of 2.0 cN/dtex or less as measured based on JIS L 1015: 2010 8.7.2. The nonwoven fabric layer (B) Includes a fiber B2 having tensile strength exceeding 2.0 cN/dtex as measured based on JIS L 1015: 2010 8.7.2. The nonwoven fabric layer (A) is disposed as an outermost layer of at least one surface.

A dual layer filter material for separating fluid or particulates from flowing air streams that is comprised of connected layers of nonwoven batting with one layer having a convoluted surface.

A dual layer filter material for separating fluid or particulates from flowing air streams that is comprised of connected layers of nonwoven batting with one layer having a convoluted surface.

A dual layer nonwoven acoustic insulating material having a more densified layer and a less densified layer that is comprised of shoddy fibers and other fibers.

A kit including first and second fabric wherein the first fabric sheet has a length in a range of from 40 to 90 inches and a width in a range of from 30 to 80 inches, wherein the first fabric sheet is folded; a second fabric sheet, wherein the second fabric sheet has a length in a range of from 10 to 30 inches and a width in a range of from 10 to 20 inches, wherein the second fabric sheet is folded; a package containing the folded first sheet and the folded second sheet, wherein the package has a package length in a range of from 6 inches to 36 inches and a package width in a range of from 4 inches to 24 inches, and wherein the package is sealed so as to enclose the folded first sheet and the folded second sheet.

A kit including first and second fabric wherein the first fabric sheet has a length in a range of from 40 to 90 inches and a width in a range of from 30 to 80 inches, wherein the first fabric sheet is folded; a second fabric sheet, wherein the second fabric sheet has a length in a range of from 10 to 30 inches and a width in a range of from 10 to 20 inches, wherein the second fabric sheet is folded; a package containing the folded first sheet and the folded second sheet, wherein the package has a package length in a range of from 6 inches to 36 inches and a package width in a range of from 4 inches to 24 inches, and wherein the package is sealed so as to enclose the folded first sheet and the folded second sheet.

There is disclosed a leukocyte removal filter material comprising a nonwoven fabric having polybutylene terephthalate fiber. The average fiber diameter of the nonwoven fabric is 0.9 to 1.5 μm, the formation index corresponding to a thickness of 0.3 mm of the nonwoven fabric is 15 to 70, and when the average fiber diameter of the nonwoven fabric is X and the specific surface area of the nonwoven fabric is Y, X and Y satisfy the following relational expression (1):
Y≥−0.65×X+1.75  (1).

There is disclosed a leukocyte removal filter material comprising a nonwoven fabric having polybutylene terephthalate fiber. The average fiber diameter of the nonwoven fabric is 0.9 to 1.5 μm, the formation index corresponding to a thickness of 0.3 mm of the nonwoven fabric is 15 to 70, and when the average fiber diameter of the nonwoven fabric is X and the specific surface area of the nonwoven fabric is Y, X and Y satisfy the following relational expression (1):
Y≥−0.65×X+1.75  (1).

A ball-shaped light heat generating fiber aggregate and a method for producing the same include a light heat generating material that is sprayed and applied to any one filament or a mixture of two or more filaments selected from the group consisting of a polyamide-based filament, a polyester-based filament, and a polypropylene-based filament, opening and mixing the same to separate the filaments, and producing a ball-shaped fiber aggregate.

A ball-shaped light heat generating fiber aggregate and a method for producing the same include a light heat generating material that is sprayed and applied to any one filament or a mixture of two or more filaments selected from the group consisting of a polyamide-based filament, a polyester-based filament, and a polypropylene-based filament, opening and mixing the same to separate the filaments, and producing a ball-shaped fiber aggregate.