Abstract: An aluminum twisted wire includes a plurality of aluminum wires that are twisted together. Each of the aluminum wires includes a conductor having a plurality of wire elements that are twisted together, and an insulator covering the conductor. The wire elements forming the conductor are made of aluminum or aluminum alloy. A twisting direction of the wire elements and a twisting direction of the aluminum wires are the same. A wire harness includes this aluminum twisted wire.

Abstract: A composite twisted wire conductor has a plurality of aggregated twisted wires formed by primarily twisting a plurality of conductive metal strands. The conductor includes a center aggregated twisted wire which is an aggregated twisted wire positioned on the most center side of a section, a first layer composite twisted wire formed by mainly twisting a plurality of aggregated twisted wires provided to overlap the periphery of the center aggregated twisted wire, and a second layer composite twisted wire formed by mainly twisting a plurality of aggregated twisted wires provided to overlap the periphery of the first layer composite twisted wire. The center aggregated twisted wire is primarily twisted in a first direction. The first layer composite twisted wire is primarily and mainly twisted in a second direction opposite to the first direction. The second layer composite twisted wire is primarily and mainly twisted in the first direction.

Abstract: A solid fatty acid alkyl ester sulfonate metal salt is disclosed having an endothermic peak area between 50° C. and 130° C. of 50% or more relative to the whole endothermic peak area between 0° C. and 130° C. when determined using a differential scanning calorimter. A method for producing a fatty acid alkyl ester sulfonate metal salt powder is also disclosed, including a step of pulverizing the solid fatty acid alkyl ester sulfonate metal salt in a pulverizer, with the internal temperature of the pulverizer being adjusted to 30° C. to 50° C.

Abstract: The present invention relates to a method for producing an aqueous ?-SF salt solution that maintains fluidity and has superior production adaptability. The method includes dissolving a solid component (a) in the form of an ?-sulfo fatty acid alkyl ester salt and a component (b) in the form of an inorganic sodium salt and/or inorganic potassium salt in water, wherein component (a) is dissolved in water at a temperature of 50° C. or higher while maintaining the following condition (i) or (ii): (i): the concentration of component (a) is 35% by weight or less when the total concentration of sodium and potassium ions derived from component (b) is less than 0.55 mol/kg, or (ii) the concentration of component (a) is 55% by weight or less when the total concentration of sodium and potassium ions derived from component (b) is 0.55 mol/kg to less than 1.8 mol/kg.

Abstract: The present invention relates to a method for producing an aqueous ?-SF salt solution that maintains fluidity and has superior production adaptability. The method includes dissolving a solid component (a) in the form of an ?-sulfo fatty acid alkyl ester salt and a component (b) in the form of an inorganic sodium salt and/or inorganic potassium salt in water, wherein component (a) is dissolved in water at a temperature of 50° C. or higher while maintaining the following condition (i) or (ii): (i): the concentration of component (a) is 35% by weight or less when the total concentration of sodium and potassium ions derived from component (b) is less than 0.55 mol/kg, or (ii) the concentration of component (a) is 55% by weight or less when the total concentration of sodium and potassium ions derived from component (b) is 0.55 mol/kg to less than 1.8 mol/kg.

Abstract: A solid a-sulfo fatty acid alkyl ester salt having a bubble volume fraction of 1 to 15% is provided by introducing a gas into a paste of a-sulfo fatty acid alkyl ester salt or adding thereto an expanding agent to incorporate bubbles into the paste of a-sulfo fatty acid alkyl ester salt.

Abstract: A solid fatty acid alkyl ester sulfonate metal salt is disclosed having an endothermic peak area between 50° C. and 130° C. of 50% or more relative to the whole endothermic peak area between 0° C. and 130° C. when determined using a differential scanning calorimeter, A method for producing a fatty acid alkyl ester sulfonate metal salt powder is also disclosed, including a step of pulverizing the solid fatty acid alkyl ester sulfonate metal salt in a pulverizer, with the internal temperature of the pulverizer being adjusted to 30° C. to 50° C.

Abstract: A composite pressure pipe which comprises an inner layer (1) made of a synthetic resin, a reinforcing band (2) which is made of a metal and is spirally wound around the outer circumferential surface of the inner layer (1), and an outer layer (3) which is made of a synthetic resin and with which the outer circumferential surface of the reinforcing band is covered. The outer layer (3) has a filling part (21) united therewith which fills the recess (20) formed between each pair of ridge parts (11) and (11) of the reinforcing band (2) which are adjacent to each other in the pipe axis direction.

Abstract: A porous pipe having an excellent absorbing and draining function, a producing apparatus capable of producing a porous pipe at high speed and low cost, and a method of producing a porous pipe are provided. The porous pipe is a pipe formed by spirally winding a tape. The pipe is formed by a hole forming portion 13 for forming a recess or a notch or a hole in the tape 2 molded by a tape molding portion 11, and the hole forming portion 13 is located between the tape molding portion 11 and a pipe forming portion 12 so that the tape 2 is molded, holes 6 are formed, and a pipe 1 is formed continuously. The holes 6 are formed into a predetermined shape by elongating the hole 6 from a side of the pipe forming portion 12. In the pipe 1 formed thereby, a peripheral wall portion of the hole 6 is gradually thin-walled toward an outer peripheral face of the hole.

Abstract: The underdrainage pipe includes an inner layer 1 formed by helically winding strands 2, 3, and an outer layer 4 also formed by helically winding a strand 5. In the strand 5 in one of the inner and outer layers 1, 4, for example, the outer layer 4, turning sections 9, 9 adjacent to each other in the axial direction of the pipe are fused together in the circumferential direction or in a plurality of positions in the circumferential direction. In these fused portions, the turning sections are further fused to the strand 2 in the other layer, i.e. the inner layer, and at least three strands 2, 5, 5 are thereby fused in one body. The pressure resisting strength of the pipe is thus improved.

Abstract: A drainpipe embedded in a water-permeable layer of a water-dischargeable pavement body is molded by using as a constitutional material a material which is degraded or disintegrated and disappears the tubular shape thereof with the passage of time in a natural environment, for example, a biodegradable resin.

Abstract: A flexible hose having air-permeability is formed by either: sandwiching an air-permeable tape between tape end edge portions, as leading and trailing in a hose longitudinal direction, of a soft resin tape that is helically wound integrally with the air-permeable tape; or by helically winding only an air-permeable tape. The flexible hose can be properly used as a cleaner hose of a discharge circulation type by using it as an outer tube of a double tube structure. By providing lubricating properties to an inner circumference of the outer tube or an outer circumference of the inner tube, it is possible to prevent wear which might otherwise be caused by rubbing contact between the inner tube and outer tube.

Abstract: There are provided a porous pipe excellent in an absorbing and draining function, a producing apparatus capable of producing a porous pipe at high speed and low cost and a method of producing a porous pipe. The porous pipe is a pipe mainly constituted by spirally winding a tape and is constituted such that there is arranged a hole forming portion 13 for forming a recess or a notch or a hole at a tape 2 molded by a tape molding portion 11 between the tape molding portion 11 and a pipe forming portion 12 and the tape 2 is molded, a hole 6 is formed and a pipe 1 is formed continuously. The hole 6 is formed into a predetermined shape by elongating the hole 6 from a side of the pipe forming portion 12. According to the pipe 1 formed thereby, a peripheral wall portion of the hole 6 is gradually thin-walled toward an outer peripheral face of the hole.

Abstract: A flexible hose having an air-permeability and formed either: by sandwiching an air-permeable tape between the tape end edge portions, as leading and trailing in the hose longitudinal direction, of a soft resin tape to be helically wound, and by winding the air-permeable tape integrally with the soft resin tape; or by winding only the air-permeable tape helically. Especially, the air-permeable flexible hose can be properly used as a cleaner hose of the discharge circulation type by using it as an outer tube of a double tube. By giving lubricating properties to the inner circumference of the outer tube or the outer circumference of the inner tube, on the other hand, it is possible to prevent the wear which might otherwise be caused by the rubbing contact.

Abstract: A producing method of a hose including, using a mold assembly constituted by a pair of semicylindrical molds each having a large number of intrusion grooves formed along the axial direction in the cylindrical surface of each of the semicylindrical molds substantially at regular intervals and supplying electrically conductive wire into the hose molding mold assembly substantially linearly along the axial direction of the mold assembly; extruding a molten resin tubularly to supply the molten resin into the mold assembly after the supply of the electrically conductive wire; supplying high-pressure air into the inside of the thus extruded molten resin tube to thereby expand the molten resin tube along the corrugated surface of the mold assembly to bring the molten resin tube into contact with the corrugated surface of the mold assembly and, at the same time, making a part of the tube go around to the outer circumferential surface side of the electrically conductive wire along the intrusion grooves of the mold ass

Abstract: There is provided a heat insulating hose which comprises a seamless cylindrical inner tube formed of a synthetic resin, and a cylindrical heat insulating layer formed of a foamed synthetic resin for covering an outer peripheral face of the inner tube, characterized in that the inner tube is provided at its one end with a cylindrical part for connection with a drain outlet of an air conditioning appliance and formed with a number of ring-shaped protrusion stripes which project toward its outer circumference over an entire length thereof in its axial direction except the cylindrical part spacing a distance W which is wider than an axial width w of each of the ring-shaped protrusion stripes, and that an area b of a desired range spaced by a determined length a from the cylindrical part is an area wherein a number of ring-shaped protrusion stripes are formed at a smaller distance s.

Abstract: Two hard steel wire-made reinforcing wires and two synthetic resin wires which are harder than a soft synthetic resin pipe wall are alternately wound spirally on an inner side of the synthetic resin pipe wall while keeping predetermined intervals.

Abstract: A synthetic resin hose includes a corrugated tube wall and an electrically conductive wire disposed substantially straight along the axial direction of the tube wall and configured so that the whole length of the electrically conductive wire on the inner circumferential surface side thereof is covered with the tube wall and the outer circumferential side thereof is enclosedly covered with only top portions of the tube wall.

Abstract: A heat insulated hose includes an approximately cylindrical inner layer having a helical cavity portion formed by unbonded overlapping of a part of a polyvinyl chloride band material, helical reinforcing wire of hard resin incorporated inside the cavity portion, a heat insulating layer made of a foam resin band which is helically wound around the cavity portion at the same pitch as the cavity portion, and an outer layer made from a soft polyvinyl chloride band covering an outer periphery of the heat insulating layer. The reinforced wire is a double layer wire including a core wire of polyolefin resin and a cover layer of soft polyvinyl chloride covering an outer periphery of the core wire, and the cover layer is made to adhere to an inner wall portion of the cavity portion with use of an adhesive agent or by thermal fusing.

Abstract: With a desired intermediate portion as a boundary, in a hose, a corrugated wall is formed on one side of the boundary while a scalene-triangularly corrugated wall is formed on the other side of the boundary, the whole of a hose is formed of a soft synthetic resin material and a hard synthetic resin material in the form of a double-layered wall. The soft synthetic resin material is made thicker than the hard synthetic resin material in a portion on a connection cylindrical portion side while the hard synthetic resin material is made thicker than the soft synthetic resin material in a portion on a drainage cylindrical portion side.