The invention relates to a method of forming a biodegradable nonwoven fabric, the nonwoven fabric obtained by this method, and a system of devices for carrying out this method, to be used for the manufacture of cellulosic articles for clean-up work and sanitary products, and medical uses.

The present invention relates to a multipurpose functional nonwoven fabric, and more particularly, to a multipurpose functional nonwoven fabric which is manufactured by performing a pretreatment process on carbonized fiber cotton, and stacking the pretreated carbonized fiber on natural cotton, mixing the pretreated carbonized fiber cotton with the natural cotton and scutching the mixed cotton, or introducing the natural cotton and stacking the natural cotton on an intermediate layer of the pretreated carbonized fiber, and a method for manufacturing same. Web formation and stacking at a cutting machine can be easily performed by performing the pretreatment process on the carbonized fiber. Also, excellent heat resistance and conductivity can be obtained by stacking the carbonized fiber cotton on natural cotton, mixing the carbonized fiber cotton with the natural cotton, scutching the mixed carbonized fiber cotton and the natural cotton and stacking the scutched cotton, or introducing natural cotton into an intermediate layer of the carbonized fiber cotton, stacking the natural cotton on the intermediate layer of the carbonized fiber cotton, and subjecting the stacked cotton to needle punching. Since a surface temperature of the nonwoven fabric can be lowered and the loss of heat can be reduced through dissipation and dispersion of heat, thermal retention and insulation properties of the entangled natural cotton can be enhanced, and carbonization prevention and incombustiblization of the natural cotton can be achieved. Also, the multipurpose functional nonwoven fabric can be manufactured at a low production cost and exhibit environmentally friendly characteristics, and a waste material can be recycled.

The present invention relates to a multipurpose functional nonwoven fabric, and more particularly, to a multipurpose functional nonwoven fabric which is manufactured by performing a pretreatment process on carbonized fiber cotton, and stacking the pretreated carbonized fiber on natural cotton, mixing the pretreated carbonized fiber cotton with the natural cotton and scutching the mixed cotton, or introducing the natural cotton and stacking the natural cotton on an intermediate layer of the pretreated carbonized fiber, and a method for manufacturing same. Web formation and stacking at a cutting machine can be easily performed by performing the pretreatment process on the carbonized fiber. Also, excellent heat resistance and conductivity can be obtained by stacking the carbonized fiber cotton on natural cotton, mixing the carbonized fiber cotton with the natural cotton, scutching the mixed carbonized fiber cotton and the natural cotton and stacking the scutched cotton, or introducing natural cotton into an intermediate layer of the carbonized fiber cotton, stacking the natural cotton on the intermediate layer of the carbonized fiber cotton, and subjecting the stacked cotton to needle punching. Since a surface temperature of the nonwoven fabric can be lowered and the loss of heat can be reduced through dissipation and dispersion of heat, thermal retention and insulation properties of the entangled natural cotton can be enhanced, and carbonization prevention and incombustiblization of the natural cotton can be achieved. Also, the multipurpose functional nonwoven fabric can be manufactured at a low production cost and exhibit environmentally friendly characteristics, and a waste material can be recycled.

A nanofiber sheet includes: a substrate layer; and a nanofiber layer located on one surface side of the substrate layer and containing nanofibers of a polymer compound. A peripheral edge of the nanofiber layer has a thickness of from 0.1 to 10 μm. The nanofiber layer includes a gradation region having a thickness that gradually increases inward from the peripheral edge. The distance W1 between the peripheral edge of the nanofiber layer and a maximum thickness portion where the thickness becomes the greatest in the gradation region is at least 3 mm. A nanofiber sheet manufacturing method involves depositing nanofibers onto a collecting unit by moving at least either a nozzle or the collecting unit, to thereby manufacture a predetermined nanofiber sheet including a gradation region.

A nanofiber sheet includes: a substrate layer; and a nanofiber layer located on one surface side of the substrate layer and containing nanofibers of a polymer compound. A peripheral edge of the nanofiber layer has a thickness of from 0.1 to 10 μm. The nanofiber layer includes a gradation region having a thickness that gradually increases inward from the peripheral edge. The distance W1 between the peripheral edge of the nanofiber layer and a maximum thickness portion where the thickness becomes the greatest in the gradation region is at least 3 mm. A nanofiber sheet manufacturing method involves depositing nanofibers onto a collecting unit by moving at least either a nozzle or the collecting unit, to thereby manufacture a predetermined nanofiber sheet including a gradation region.

An article including one or more moisture wicking layers and one or more fibrous layers. The fibrous layers may have generally vertically oriented fibers, which may be oriented generally perpendicularly to a surface having or producing moisture. The article may be adapted to remove moisture form the surface having or producing moisture. The article may be breathable. The article may be quick drying. The article may provide cushioning. The article may be a wearable item.

An article including one or more moisture wicking layers and one or more fibrous layers. The fibrous layers may have generally vertically oriented fibers, which may be oriented generally perpendicularly to a surface having or producing moisture. The article may be adapted to remove moisture form the surface having or producing moisture. The article may be breathable. The article may be quick drying. The article may provide cushioning. The article may be a wearable item.

An article including one or more moisture wicking layers and one or more fibrous layers. The fibrous layers may have generally vertically oriented fibers, which may be oriented generally perpendicularly to a surface having or producing moisture. The article may be adapted to remove moisture form the surface having or producing moisture. The article may be breathable. The article may be quick drying. The article may provide cushioning. The article may be a wearable item.

An article including one or more moisture wicking layers and one or more fibrous layers. The fibrous layers may have generally vertically oriented fibers, which may be oriented generally perpendicularly to a surface having or producing moisture. The article may be adapted to remove moisture form the surface having or producing moisture. The article may be breathable. The article may be quick drying. The article may provide cushioning. The article may be a wearable item.

The apparel is constructed from various combinations of layers of materials with moisture transfer properties. A first liner of moisture transfer fabrics abuts a second layer of structural material such as open-cell foam. The second layer can abut a breathable membrane and/or an insulating material. Finally, carefully selected outer fabric completes the combination to provide apparel with improved performance characteristics. The outer fabrics are treated in various ways to enhance performance.