Abstract: Provided is a liquid crystal polyester fiber achievable of good mechanical properties by a heat treatment at a lower temperature for a shorter time and excellent in heat aging resistance. The liquid crystal polyester fiber includes at least one metallic element selected from the group consisting of metallic elements belonging to from Group 8 to Group 11 in Periodic Table. For example, the liquid crystal polyester fiber may contain the selected one or more metallic elements in a total content of from 1 to 1000 ppm by weight. The liquid crystal polyester fiber may contain the selected one or more metallic elements as one or more metallic compounds each having a melting point of (Mp0 + 30)°C or lower, wherein the Mp0 denotes a melting point of a liquid crystal polyester constituting the fiber.

Abstract: Provided are a liquid crystal polyester resin composition and a liquid crystal polyester fiber both capable of suppressing gas generation during melt-heating as well as producing a molded body of good quality with few bubbles. The liquid crystal polyester resin composition includes a liquid crystal polyester and at least one metallic element selected from the group consisting of metallic elements belonging to from Group 8 to Group 11 in Periodic Table. The liquid crystal polyester fiber includes the liquid crystal polyester resin composition. For example, the liquid crystal polyester fiber may have a total amount of carboxy end groups (total CEG amount) of 5.0 mEq/kg or less.

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: 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 liquid-retaining sheet contains a liquid-retaining layer that is able to absorb a liquid component, and the liquid-retaining layer is formed from a nonwoven structural member containing a transparent fiber. In the liquid-retaining sheet, the transparency shown below is adjusted to not more than 0.27. Transparency=Whiteness (%) of a sheet impregnated with 700% by mass of water relative to the sheet mass/Basis weight (g/m2) The transparent fiber may contain a cellulose-series fiber substantially free from a carboxyl group (in particular, a regenerated cellulose fiber such as a solvent-spinning cellulose-series fiber). The proportion of the solvent-spinning cellulose-series fiber may be not less than 30% by mass in the transparent fiber. The liquid-retaining sheet may be a skin care sheet (in particular, a facial mask) that is impregnated with a liquid component containing a cosmetic preparation.

Abstract: Provided is a water absorbent laminate including: a first fiber layer including a first fiber assembly including first hydrophilic fibers; and a second fiber layer including a second fiber assembly including wet-heat-adhesive fibers in an amount greater than or equal to 80% by mass, wherein a surface of the first fiber layer on a side opposite to the second fiber layer has a water absorption rate less than or equal to 10 seconds as determined in accordance with the dropping method defined in JIS L 1907. Also provided is a method for producing the water absorbent laminate. The water absorbent laminate can further include a third fiber layer including a third fiber assembly including second hydrophilic fibers between the first fiber layer and the second fiber layer.

Abstract: A liquid-retaining sheet contains a liquid-retaining layer that is able to absorb a liquid component, and the liquid-retaining layer is formed from a nonwoven structural member containing a transparent fiber. In the liquid-retaining sheet, the transparency shown below is adjusted to not more than 0.27. Transparency=Whiteness (%) of a sheet impregnated with 700% by mass of water relative to the sheet mass/Basis weight (g/m2) The transparent fiber may contain a cellulose-series fiber substantially free from a carboxyl group (in particular, a regenerated cellulose fiber such as a solvent-spinning cellulose-series fiber). The proportion of the solvent-spinning cellulose-series fiber may be not less than 30% by mass in the transparent fiber. The liquid-retaining sheet may be a skin care sheet (in particular, a facial mask) that is impregnated with a liquid component containing a cosmetic preparation.

Abstract: A vehicle wheel disk includes a hat portion having a crest portion extending continuously in a circumferential direction of the disk, an inner curved portion curved inwardly in an axial direction of the disk radially inside the crest portion and extending continuously in a circumferential direction of the disk, and an outer curved portion curved inwardly in the axial direction of the disk radially outside the crest portion and extending in the circumferential direction of the disk.

Abstract: [Objective] To provide a box that allows easy tasks involved in assembling and disassembling and a novel plate material connecting structure adapted thereto. [Means to solve the problem] An assembly box comprises: a frame 1 (or 10) that is rectangular as seen from the top and whose four sides are formed from plate materials 11a and the like which are square as seen from the front; and a base 2 that has a placement plane 2a for the frame 1 and guides 21 and the like for supporting the plate materials constituting the frame 1 on the placement plane 2a. A first connecting part 111 and a second connecting part 122 (or a first connecting part 121 and a second connecting part 112) are positioned at corners of the frame 1 and have each a detachable locking mechanism. The locking mechanism is configured to separate two connected plate materials by inclining either one of the plate materials at a predetermined or larger angle with reference to the plate material connecting part.

Abstract: A vehicle wheel disk includes a hat portion having a crest portion extending continuously in a circumferential direction of the disk, an inner curved portion curved inwardly in an axial direction of the disk radially inside the crest portion and extending continuously in a circumferential direction of the disk, and an outer curved portion curved inwardly in the axial direction of the disk radially outside the crest portion and extending in the circumferential direction of the disk.

Abstract: [Objective] To provide a box that allows easy tasks involved in assembling and disassembling and a novel plate material connecting structure adapted thereto. [Means to solve the problem] An assembly box comprises: a frame 1 (or 10) that is rectangular as seen from the top and whose four sides are formed from plate materials 11a and the like which are square as seen from the front; and a base 2 that has a placement plane 2a for the frame 1 and guides 21 and the like for supporting the plate materials constituting the frame 1 on the placement plane 2a. A first connecting part 111 and a second connecting part 122 (or a first connecting part 121 and a second connecting part 112) are positioned at corners of the frame 1 and have each a detachable locking mechanism. The locking mechanism is configured to separate two connected plate materials by inclining either one of the plate materials at a predetermined or larger angle with reference to the plate material connecting part.