Abstract: Provided is a heat-resistant Ir alloy, which is further improved in Vickers hardness while maintaining satisfactory processability. Specifically, provided is a heat-resistant Ir alloy, including: 5 mass % to 30 mass % of Pt; 0.5 mass % to 5 mass % of Ta; and 0.003 mass % to 0.15 mass % of at least one kind selected from the group consisting of: Sc; Hf; and W, with the balance being Ir.

Abstract: An iridium alloy includes iridium, platinum, and tantalum. A content of the platinum in the iridium alloy falls within a range from 5 wt % to 30 wt %, and a content of the tantalum in the iridium alloy falls within a range from 0.3 wt % to 5 wt %.

Abstract: An iridium alloy includes iridium, platinum, and tantalum. A content of the platinum in the iridium alloy falls within a range from 5 wt % to 30 wt %, and a content of the tantalum in the iridium alloy falls within a range from 0.3 wt % to 5 wt %.

Abstract: Provided is an Ir alloy, which is further improved in Vickers hardness. Specifically, provided is a heat-resistant Ir alloy, including: 5 mass % to 30 mass % of Rh; 0.5 mass % to 5 mass % of Ta; and 0.003 mass % to 0.15 mass % of at least one kind selected from the group consisting of: Sc; Hf; and W, with the balance being Ir.

Abstract: Provided is an Ir alloy wire, which is further improved in oxidation wear resistance while ensuring a Vickers hardness. The Ir alloy wire includes: 5 mass % to 30 mass % of Rh; and 0.5 mass % to 5 mass % of Ta, wherein an average value A for an aspect ratio (crystal grain length/crystal grain width) of a structure of the alloy wire in a range of a depth of 0.05 mm or less from a surface of the alloy wire satisfies 1?A<6.

Abstract: Provided is an Ir alloy, which is further improved in Vickers hardness. Specifically, provided is a heat-resistant Ir alloy, including: 5 mass% to 30 mass% of Rh; 0.5 mass% to 5 mass% of Ta; and 0.003 mass% to 0.15 mass% of at least one kind selected from the group consisting of: Sc; Hf; and W, with the balance being Ir.

Abstract: Provided is an Ir alloy wire, which is further improved in oxidation wear resistance while ensuring a Vickers hardness. The Ir alloy wire includes: 5 mass % to 30 mass % of Rh; and 0.5 mass % to 5 mass % of Ta, wherein an average value A for an aspect ratio (crystal grain length/crystal grain width) of a structure of the alloy wire in a range of a depth of 0.05 mm or less from a surface of the alloy wire satisfies 1?A<6.

Abstract: Footwear includes an inner knitted fabric (5) and an outer knitted fabric (4) that are connected by a stitch row at a top line (6). In the footwear, wale directions of the inner knitted fabric and the outer knitted fabric are different, and/or, the outer knitted fabric is provided with a portion made of a knitted structure (50) with holes, and the inner knitted fabric arranged on the inner side of that portion is made of a knitted structure (60) whose stretchability is lower than that of another portion of the inner knitted fabric. A difference in stretchability between the vertical and horizontal directions of the footwear provided with a double layer knitted fabric is reduced, or a difference in stretchability depending on the position in the footwear is reduced.

Abstract: A first fabric of footwear comprising a closed lower end forming a toe and an open upper end and a second fabric that is open on a side opposite the first fabric is knitted on on front and back needle beds of a flat knitting machine. Double stitches formed between stitches at the upper end of the first fabric and between stitches at the upper end of the second fabric are taken from the needle beds. Remaining stitches at the first fabric upper end are held on one needle bed, and remaining stitches at the second fabric upper end are held on the other needle bed. Fabrics that follow the remaining stitches at the first fabric upper end and the remaining stitches at the second fabric upper end are knitted toward the heel of the footwear.

Abstract: A first fabric of footwear comprising a closed lower end forming a toe and an open upper end and a second fabric that is open on a side opposite the first fabric is knitted on on front and back needle beds of a flat knitting machine. Double stitches formed between stitches at the upper end of the first fabric and between stitches at the upper end of the second fabric are taken from the needle beds. Remaining stitches at the first fabric upper end are held on one needle bed, and remaining stiches at the second fabric upper end are held on the other needle bed. Fabrics that follow the remaining stitches at the first fabric upper end and the remaining stitches at the second fabric upper end are knitted toward the heel of the footwear.

Abstract: There is provided a method for knitting a knitted fabric capable of forming a decoration unit of a novel shape using a flat knitting machine. A decoration unit (2) is formed on a surface of a base knitted fabric portion (1), the decoration unit (2) being configured by a lower edge (2D) extending in a knitting width direction of the base knitted fabric portion (1), a left edge (2L) extending in a direction intersecting the knitting width direction from a left end of the lower edge (2D), and a right edge (2R) extending in a direction intersecting the knitting width direction from a right end of the lower edge (2D). The lower edge (2D) is configured by a cross-over yarn extending in the knitting width direction of the base knitted fabric portion (1). The left edge (2L) and the right edge (2R) are configured by stitches stretched in a direction intersecting the knitting width direction. The cross-over yarn and the stitches are knitted all at once.

Abstract: A method for knitting a shoe upper capable of forming a new stretch preventing section different from a conventional stretch preventing section, and a shoe upper obtained through such knitting method are provided. The shoe upper including a base knitted fabric portion (1F) that covers a foot of a wearer is knitted. In the knitting, a stretch preventing section (20) configured by a knitted fabric of a plain structure is knitted, where one end in a wale direction is connected to the base knitted fabric portion (1F) and another end in the wale direction is not connected to the base knitted fabric portion (1F). The stretch preventing section (20) in which one end is fixed and the other end is not fixed is curled to a tubular shape. The curled stretch preventing section (20) is thicker than the other portions, thus suppressing the stretch of the shoe upper.

Abstract: Footwear includes an inner knitted fabric (5) and an outer knitted fabric (4) that are connected by a stitch row at a top line (6). In the footwear, wale directions of the inner knitted fabric and the outer knitted fabric are different, and/or, the outer knitted fabric is provided with a portion made of a knitted structure (50) with holes, and the inner knitted fabric arranged on the inner side of that portion is made of a knitted structure (60) whose stretchability is lower than that of another portion of the inner knitted fabric. A difference in stretchability between the vertical and horizontal directions of the footwear provided with a double layer knitted fabric is reduced, or a difference in stretchability depending on the position in the footwear is reduced.

Abstract: There is provided a shoe upper excelling in productivity, and a method for knitting the same. A shoe upper (1) includes a left side intermediate knitted fabric portion (5L) connecting a left side edge portion of a tongue (4) and an instep cover section (3), and a right side intermediate knitted fabric portion (5R) connecting a right side edge portion of the tongue (4) and the instep cover section (3). In such shoe upper (1), a width of an end of the tongue (4) is formed wider on a foot insertion opening (7) side than on a toe side, both side edge portions of the tongue (4) are overlapped with the instep cover section (3) in a thickness direction thereof, and the instep cover section (3), the tongue (4), and both the intermediate knitted fabric portions (5L, 5R) are all integrally knitted in a seamless manner.

Abstract: The shoe upper is tubular and has a toe, a body between the toe and the heel and including a tongue, heel, and a top line. The body includes the tongue covering the central part of instep, the right portion at the right side of the tongue covering the right side of instep and the right half of the sole, and the left portion at the left side of the tongue covering the left side of instep and the left half of the sole. The tongue and the right portion are connected by the right plating area 14 having a knitting width of two or more stitches knitted by plating-knitting where knitting yarns for the tongue and the right portion are overlapped with a constant relation of the front and the rear and made into stitches. The tongue and the left portion are connected by the left plating area 15 having a knitting width of two or more stitches knitted by plating-knitting where knitting yarns for the tongue and the left portion are overlapped with a constant relation of the front and the rear and made into stitches.

Abstract: There is provided a method for producing a shoe upper with which a shoe upper can be produced with high productivity, and a shoe upper obtained with the method for producing the shoe upper. An instep cover section (3) and a sole cover section (2) are integrally knitted in a seamless manner by carrying out process ? and then carrying out process ? or by carrying out process ? and then carrying out process ? with a flat knitting machine including at least a pair of a front and a back needle bed. [Process ?] Knitting a main body left portion (3L), which is a left side portion of the instep cover section (3), with one needle bed of the flat knitting machine and knitting a main body right portion (3R), which is a right side portion of the instep cover section (3), with the other needle bed of the flat knitting machine.

Abstract: A method for knitting a shoe upper capable of forming a new stretch preventing section different from a conventional stretch preventing section, and a shoe upper obtained through such knitting method are provided. The shoe upper including a base knitted fabric portion (1F) that covers a foot of a wearer is knitted. In the knitting, a stretch preventing section (20) configured by a knitted fabric of a plain structure is knitted, where one end in a wale direction is connected to the base knitted fabric portion (1F) and another end in the wale direction is not connected to the base knitted fabric portion (1F). The stretch preventing section (20) in which one end is fixed and the other end is not fixed is curled to a tubular shape. The curled stretch preventing section (20) is thicker than the other portions, thus suppressing the stretch of the shoe upper.

Abstract: There is provided a method for knitting a knitted fabric capable of forming a decoration unit of a novel shape using a flat knitting machine. A decoration unit (2) is formed on a surface of a base knitted fabric portion (1), the decoration unit (2) being configured by a lower edge (2D) extending in a knitting width direction of the base knitted fabric portion (1), a left edge (2L) extending in a direction intersecting the knitting width direction from a left end of the lower edge (2D), and a right edge (2R) extending in a direction intersecting the knitting width direction from a right end of the lower edge (2D). The lower edge (2D) is configured by a cross-over yarn extending in the knitting width direction of the base knitted fabric portion (1). The left edge (2L) and the right edge (2R) are configured by stitches stretched in a direction intersecting the knitting width direction. The cross-over yarn and the stitches are knitted all at once.

Abstract: There is provided a method for knitting a shoe upper that can allow the reinforcement degree of the shoe upper to be changed with a small number of yarn feeders. A method for knitting a shoe upper (1) including an instep cover section (3) that covers a portion on an instep side of a wearer and a sole cover section (2) that covers a sole of the wearer is provided. The instep cover section (3) and the sole cover section (2) are three-dimensionally knitted in a seamless manner; and in the knitting process, at least one base section (10) configuring a part of the shoe upper (1) is knitted using a base knitting yarn containing a non-thermal adhesive yarn and a thermal adhesive yarn, and a reinforcement knitting yarn containing a thermal adhesive yarn is interwoven in the base section (10) to reinforce the base section (10). In this case, the number of knitting with the reinforcement knitting yarn with respect to the base section (10) is changed.

Abstract: There is provided a shoe upper excelling in productivity, and a method for knitting the same. A shoe upper (1) includes a left side intermediate knitted fabric portion (5L) connecting a left side edge portion of a tongue (4) and an instep cover section (3), and a right side intermediate knitted fabric portion (5R) connecting a right side edge portion of the tongue (4) and the instep cover section (3). In such shoe upper (1), a width of an end of the tongue (4) is formed wider on a foot insertion opening (7) side than on a toe side, both side edge portions of the tongue (4) are overlapped with the instep cover section (3) in a thickness direction thereof, and the instep cover section (3), the tongue (4), and both the intermediate knitted fabric portions (5L, 5R) are all integrally knitted in a seamless manner.