Abstract: A method for manufacturing a vehicle muffler includes: forming a tubular body (6; 91, 92) from a nonwoven fabric (2; 2A, 2B) composed of inorganic fibers (11) each being in a filament form; inserting and installing the tubular body (6) as a sound-absorbing material into a space (S) between an inner pipe (72; 81) and an outer pipe (71; 821, 822) of an inner-outer double pipe constituting a vehicle muffler. The tubular body (6) may be obtained by applying a binder (3) to one surface (2a) of the nonwoven fabric (2), then rolling the nonwoven fabric (2) into a tubular shape with the surface (2a) having the binder (3) applied thereto facing inward, infiltrating additional binder (3) into an outer peripheral surface of the tubular-shaped nonwoven fabric (2), and then heating the tubular-shaped nonwoven fabric (2) to a predetermined temperature to harden the binder (3).

Abstract: A resin impregnating device (1) is used in a method for producing a reinforcing bar and has a chamber for holding a liquid thermoplastic resin. A plurality of guide plates (4A-4C) is arranged in the chamber along a traveling direction of a plurality of strands of reinforcing fiber material (Fb). Through holes (41) in two of the guide plates (4A, 4C) guide or spread the strands of the reinforcing fiber material Fb away from each other, and a single through hole (42) in an intermediate one of the guide plates (4B) guides or converges all the strands of the reinforcing fiber material (Fb) towards each other.

Abstract: According to the present invention, there is provided, at low cost, a thread/yarn for making it possible to easily determine whether a product is a genuine product or a forgery/imitation product, thereby suppressing the manufacture and marketing of forgery/imitation products. This forgery-preventing thread/yarn is formed by making use of a film comprising abase sheet and letters or images printed on the base sheet, the film being slit to have a width of 0.15 mm˜0.75 mm. A thread, yarn or a flat thread representing a genuine product can be cheaply manufactured since it can be obtained by simply slitting a film to a width of 0.15 mm˜0.75 mm. Further, it is possible to easily determine whether a product is a genuine product or a forgery/imitation.

Abstract: A method for manufacturing a double pipe includes: drawing a plate (1), which has a predetermined shape corresponding to the desired final shape of a curved outer pipe (4), into a curved, substantially U-shape in cross-section to produce a half pipe (2). Then, an inner pipe (3), which has a curved shape similar to the desired final curved shape of the outer pipe, is inserted into and positioned within the interior space of the half pipe. Subsequently, the inner pipe is welded to the half pipe at one longitudinal end thereof. Thereafter, longitudinally-extending edges of the half pipe are curled towards each other until they abut and a substantially circular cross-section is formed that surrounds the exterior of the inner pipe. The abutting longitudinally-extending edges (22) of the half pipe are then welded together to produce the curved outer pipe (4).

Abstract: A method for forming a flange at an open end of a pipe comprises increasing the diameter of the open end of the pipe to form a radially-enlarged pipe wall. Radially-symmetric portions of the radially-enlarged pipe wall are then removed so as to form at least two opposing projecting portions, which are then bent outwardly so as to be at least substantially orthogonal to the pipe, thereby forming the flange on the pipe.

Abstract: Basalt filament is manufactured such that the fiber diameter can be controlled and the filament is not severed during winding. A network former and a glass modifier are formed and maintained with respect to basalt rock ore, and the crystallization and binding of basalt fiber are inhibited, the heat-resistance property of basalt fiber is greatly improved from the conventional 750° C. to 850 or 900° C., and significant cost reduction is achieved over conventional products. The method includes: grinding basalt rock as a material; washing a resultant ground rock; melting the ground rock that has been washed; transforming a molten product into fiber; and drawing the fiber in an aligned manner, and winding it. The temperature of the molten product in the melting step is 1400 to 1650° C., and log ? is 2.15 to 2.35 dPa·s and preferably 2.2 to 2.3 dPa·s, where ? is the viscosity of the molten product.

Abstract: A method of manufacturing an interior substrate material, e.g., for an automobile includes impregnating a sheet-shaped, nonwoven mat material, which consists of glass fibers, with a urethane-yielding liquid, and heating the mat material impregnated with the urethane-yielding liquid to foam and heat cure the urethane-yielding liquid in the mat material, thereby producing the interior substrate material.

Abstract: A method for producing a thermally expandable base material for a vehicle interior, the method includes needling a web to produce a fiber mat. The web includes an inorganic fiber, a thermoplastic resin fiber, and a thermally expandable microcapsule. The fiber mat is heated to a temperature at which the thermoplastic resin fiber is melt and which is lower than a thermal expansion starting temperature of the thermally expandable microcapsule. The fiber mat is hot-pressed. The fiber mat is cooled.

Abstract: A method for forming a flange at an open end of a pipe comprises increasing the diameter of the open end of the pipe to form a radially-enlarged pipe wall. Radially-symmetric portions of the radially-enlarged pipe wall are then removed so as to form at least two opposing projecting portions, which are then bent outwardly so as to be at least substantially orthogonal to the pipe, thereby forming the flange on the pipe.

Abstract: A lightweight mat material having excellent sound absorption and thermal insulation properties comprises a mixture of glass fibers and sheath-core composite fibers, wherein the melting temperature of the sheath portion is lower than the melting temperature of the core portion. The glass fibers are fused with the sheath portions of the composite fibers by melting on at least one surface of the sheet-shaped mat material.

Abstract: A method for producing a thermally expandable base material for a vehicle interior, the method includes needling a web to produce a fiber mat. The web includes an inorganic fiber, a thermoplastic resin fiber, and a thermally expandable microcapsule. The fiber mat is heated to a temperature at which the thermoplastic resin fiber is melt and which is lower than a thermal expansion starting temperature of the thermally expandable microcapsule. The fiber mat is hot-pressed. The fiber mat is cooled.

Abstract: Basalt filament is manufactured in such a manner that the fiber diameter can be controlled and the filament is not severed during the winding step. A network former and a glass modifier are formed and maintained with respect to basalt rock ore, and the crystallization and binding of basalt fiber are inhibited, the heat-resistance property of basalt fiber is greatly improved from the conventional 750° C. to 850 or 900° C., and significant cost reduction is achieved over conventional products. The method includes the steps of: grinding basalt rock as a material; washing a resultant ground rock; melting the ground rock that has been washed; transforming a molten product into fiber; and drawing the fiber in an aligned manner, and winding it. The temperature of the molten product in the melting step is 1400 to 1650° C., and log ? is 2.15 to 2.35 dPa·s and preferably 2.2 to 2.3 dPa·s, where ? is the viscosity of the molten product.

Abstract: A heat insulator is wound around an outer periphery of a vehicle exhaust pipe. The heat insulator comprises a deformable sheet-shaped heat insulating material hermetically encased in a reduced pressure state in a bag member comprised of heat-resistant metal foil.

Abstract: Provided is a sub-muffler which needs no heat resistant material such as SUS, and which can keep its durability and sound absorbing performance even when the sub-muffler is exposed to various corrosive components in the exhaust gas. At the same time, accomplished is a low-cost manufacture, which is a challenge that sub-mufflers and sound absorbing materials commonly face. Disclosed is a sub-muffler in which a perforated exhaust pipe is arranged, and caps and an out pipe are arranged outside the perforated pipe. Sound absorbing materials are filled in the space between the perforated exhaust pipe, and the caps and the out pipe. The sub-muffler is characterized in that, among the sound absorbing materials, at least part of the sound absorbing material of the perforated pipe side is a basalt fiber for high temperature.

Abstract: A network former and a glass modifier are formed and maintained by using basalt rock ore, and the crystallization and binding of basalt fiber are inhibited The heat-resistance property of basalt fiber is greatly improved from the conventional 750° C. to 850 or 900° C., and significant cost reduction is achieved over conventional products. Basalt fiber material having basalt rock as a raw material to which one or more kinds of oxide selected from Al2O3, SiO2, CaO, and MgO is added, and basalt fiber material having two kinds of basalt rock containing different amounts of elements as raw materials are provided.

Abstract: An exhaust pipe 1 having a circular cross section is connected to a circular cylindrical housing 2 which creates part of pipe conduit. The housing 2 forms a storage space 21 having a diameter larger than the diameter of the exhaust pipe 1 and connecting to the rear connection part 22. The connection part 22 is tapered toward the downstream exhaust pipe 12 and the diameter of the connection part 22 is gradually reduced and its opening is welded into the opening of the downstream exhaust pipe 12. And a cylindrical honeycomb catalyst carrier 3 is stored in the storage space 21 so that the outer surface of the catalyst carrier is in contact with the inner surface of the storage space 21. An expanded portion 23 having a diameter larger than the diameter of the storage space 21 is outwardly expanded from the outer circumference of the housing 2 and connectingly provided on the front face of the storage space 21.

Abstract: A clamping member (2) for clamping a periphery of a rear-end open portion of an exhaust pipe (3) is accommodated in a front-end open portion (11) of a tail pipe (1). The clamping member (2) has a pair of plate parts (21, 22) disposed at right and left positions of the front-end open portion (11) and a bolt (4) for connecting the plate parts (21, 22) to each other by reducing an interval between the opposed plate parts enough to sandwich a periphery of the rear-end open portion (31) between the plate parts. A concave surface (21a, 22a) whose configuration conforms to that of a periphery of the rear-end open portion (31) inserted between the plate parts (21, 22) is formed on each of the plate parts (21, 22).

Abstract: An exhaust pipe 1 having a circular cross section is connected to a circular cylindrical housing 2 which creates part of pipe conduit. The housing 2 forms a storage space 21 having a diameter larger than the diameter of the exhaust pipe 1 and connecting to the rear connection part 22. The connection part 22 is tapered toward the downstream exhaust pipe 12 and the diameter of the connection part 22 is gradually reduced and its opening is welded into the opening of the downstream exhaust pipe 12. And a cylindrical honeycomb catalyst carrier 3 is stored in the storage space 21 so that the outer surface of the catalyst carrier is in contact with the inner surface of the storage space 21. An expanded portion 23 having a diameter larger than the diameter of the storage space 21 is outwardly expanded from the outer circumference of the housing 2 and connectingly provided on the front face of the storage space 21.

Abstract: An opening edge of an upstream-side exhaust pipe and an opening edge of a downstream-side exhaust pipe opposed to the opening edge of the upstream-side exhaust pipe are bent radially outward and thereafter radially inward by molding to form a circumference of the upstream-side exhaust pipe and a circumference of the downstream-side exhaust pipe as a flange portion respectively. After both flange portions are butted to each other through a gasket disposed therebetween, they are mechanically coupled to each other with a bolt and a nut.

Abstract: A clamping member (2) for clamping a periphery of a rear-end open portion of an exhaust pipe (3) is accommodated in a front-end open portion (11) of a tail pipe (1). The clamping member (2) has a pair of plate parts (21, 22) disposed at right and left positions of the front-end open portion (11) and a bolt (4) for connecting the plate parts (21, 22) to each other by reducing an interval between the opposed plate parts enough to sandwich a periphery of the rear-end open portion (31) between the plate parts. A concave surface (21a, 22a) whose configuration conforms to that of a periphery of the rear-end open portion (31) inserted between the plate parts (21, 22) is formed on each of the plate parts (21, 22).