Abstract: Provided is a fiber structure having a high dust holding capacity. The fiber structure includes a thick fiber group composed of fibers A each having a single fiber diameter larger than 5 ?m and a thin fiber group composed of fibers B each having a single fiber diameter of 5 ?m or smaller, and has an intermingled region in which the thick fiber group and the thin fiber group are intermingled.

Abstract: The present invention relates to a patterned fiber substrate comprising: a fiber substrate; and a pattern consisting of a functional material and formed on the fiber substrate, wherein at least a part of the functional material that constitutes the pattern is present in inside of the fiber substrate, the fiber substrate has a contact angle of 100 to 170° with pure water on its surface, and the pattern has a narrowest line width of 1 to 3000 ?m.

Abstract: A current collector, an electrode, and a non-aqueous electrolyte battery are provided. The current collector includes a conductive body having a three-dimensional porous structure. The current collector has an air permeability of 0.1 to 600 cc/cm2/sec and a thickness of less than 100 ?m. Also, the electrode includes the current collector and an electrode material layer disposed on at least one surface of the current collector. The non-aqueous electrolyte battery includes the electrode.

Abstract: Provided is a fiber structure which can have both a high filtering efficiency and a small pressure loss. The fiber structure comprises ultrafine fibers having a number average single fiber diameter of 4.5 ?m or smaller and non-ultrafine fibers having a number average single fiber diameter of 5.5 ?m or larger, wherein the ultrafine fibers and the non-ultrafine fibers are unitedly intermingled, and the fiber structure includes projections on at least one surface thereof. For example, in the fiber structure, the ultrafine fibers may be heat-resistant ultrafine fibers, and the non-ultrafine fibers may be heat-resistant non-ultrafine fibers.

Abstract: The present invention relates to a patterned fiber substrate comprising: a fiber substrate; and a pattern consisting of a functional material and formed on the fiber substrate, wherein at least a part of the functional material that constitutes the pattern is present in inside of the fiber substrate, the fiber substrate has a contact angle of 100 to 170° with pure water on its surface, and the pattern has a narrowest line width of 1 to 3000 ?m.

Abstract: Provided are a continuous-fiber nonwoven fabric having excellent denseness, a composite material including the nonwoven fabric and having good appearance, and a method for producing the composite material. The continuous-fiber nonwoven fabric includes fibers containing an amorphous thermoplastic phenoxy resin as a main component, wherein the thermoplastic phenoxy resin has a weight-average molecular weight in a range of from 10,000 to 100,000 and a glass transition temperature equal to or lower than 100° C. For example, the continuous-fiber nonwoven fabric may be a melt-blown nonwoven fabric or a spunbonded nonwoven fabric.

Abstract: Provided is a fiber structure in which an extra-fine fiber layer and a substrate layer are integrated deeply. The fiber structure includes an extra-fine fiber layer 10 spreading in a plane direction, and a substrate layer 20 adjoining the extra-fine fiber layer, wherein the extra-fine fiber layer 10 includes extra-fine fibers having a number average single fiber diameter of 5 ?m or less; the substrate layer 20 includes non-extra-fine fibers having a number average single fiber diameter of 7 ?m or more; and in a cross section along a thickness direction of the fiber structure, the substrate layer 20 contains mixture portions 12 in each of which some of the extra-fine fibers pushed between the non-extra-fine fibers are widened in a crosswise direction.

Abstract: A nonwoven fabric containing a polyvinyl butyral fiber is provided. In particular, continuous fiber nonwoven fabrics, such as a melt-blown nonwoven fabric and a spunbonded nonwoven fabric, are preferred. By laminating a plurality of layers via an adhering layer made of such a nonwoven fabric and then heating, a laminate is obtained by a simple process. In particular, an interior material in which an inorganic fiber layer, a foam layer and a surface material layer are adhered together via the aforementioned type of adhering layers is a desirable embodiment. Such an interior material is excellent in rigidity, sound absorbency and thermal deformation resistance, and therefore is useful as an interior material to be used for cars, railway vehicles, vessels, and the like.

Abstract: A nonwoven fabric containing a polyvinyl butyral fiber is provided. In particular, continuous fiber nonwoven fabrics, such as a melt-blown nonwoven fabric and a spunbonded nonwoven fabric, are preferred. By laminating a plurality of layers via an adhering layer made of such a nonwoven fabric and then heating, a laminate is obtained by a simple process. In particular, an interior material in which an inorganic fiber layer, a foam layer and a surface material layer are adhered together via the aforementioned type of adhering layers is a desirable embodiment. Such an interior material is excellent in rigidity, sound absorbency and thermal deformation resistance, and therefore is useful as an interior material to be used for cars, railway vehicles, vessels, and the like.

Abstract: A porous sheet suitable for use in first-aid sticking plasters, poultices, etc. as the substrate is described. The porous sheet comprises a thermoplastic polymer, and an arbitrary cross section of the porous sheet has a polymer packing of 30 to 90% and contains 2 to 100 polymer sections having a sectional area of 0.001 mm2 or less per millimeter along the surface of the porous sheet. At least one surface of the porous sheet is in net-work structure (a) formed by fiber-like bodies which are integrally bonded to each other at intersections by fusion of polymer constituting the fiber-like bodies and/or net-work structure (b) formed by fiber-like protrusions. With such structures, the porous sheet has a moderate air permeability, and is good in soft texture and highly resistant to fluff formation by rubbing.