Abstract: An air-permeable packaging material which includes a non-perforated polyolefin layer having a thickness of 3 ?m to 18 ?m and constituted of at least one polymer selected from the group consisting of polypropylene and polyethylene and a net-shaped reinforcing layer; a package which includes the air-permeable packaging material, the non-perforated polyolefin layer facing outward, and which contains an oxygen scavenger, a desiccant, a deodorant, an insect repellent, or a fragrance; and a method for producing the package.

Abstract: The sound absorbing material according to the present invention is formed by laminating a porous sound absorber and two or more sheets of a nonwoven fabric one on another. The nonwoven fabric has a plurality of drawn filaments arranged and oriented in one direction. The mode value of the diameter distribution of the plurality of filaments is in the range of 1 to 4 ?m. The grammage of the nonwoven fabric is in the range of 5 to 40 g/m2. The sound absorbing material according to the present invention provides high sound absorption performance in a predetermined low frequency band of 6000 Hz or less, and still remains light in weight and flexible enough and easy enough to handle to be substantially comparable to the porous sound absorber.

Abstract: A substrate 2 of an adhesive tape 1 includes a mesh structure made of thermoplastic resin. The mesh structure has a structure in which multiple first fibers drawn in a first direction corresponding to a length direction of the adhesive tape and multiple second fibers drawn in a second direction corresponding to a width direction of the adhesive tape are layered or woven. (a) A first fiber has a thickness of 0.04 mm or less, and a width of 0.6 mm or less, (b) a second fiber has a thickness greater than that of the first fiber, and a width greater than or equal to that of the first fiber, (c) the mesh structure has a tensile strength in the first direction of from 130 to 250 N/50 mm, (d) the mesh structure has a bending resistance in the first direction obtained by a cantilever test of from 40 to 80 mm, and (e) the mesh structure has a bending resistance in the second direction obtained by the cantilever test of from 65 to 95 mm.

Abstract: A transparent net structure including two or more uniaxial alignment bodies of a multilayer film which includes a thermoplastic resin layer containing at least one polypropylene (T) selected from the group consisting of block polypropylene and random polypropylene polymerized with a metallocene catalyst, and an adhesive layer containing polypropylene (A) polymerized with a metallocene catalyst and laminated on at least one surface of the thermoplastic resin layer, in which the two or more uniaxial alignment bodies are laminated or woven such that the adhesive layers are interposed among the two or more uniaxial alignment bodies and alignment axes of the two or more uniaxial alignment bodies intersect with each other.

Abstract: A sheet material is provided which includes a reticular structure, a polyamide-based resin film laminated on one face of the reticular structure, and a resin layer formed on a face of the polyamide-based resin film, the face being on the opposite side of the reticular structure. The resin layer prevents precipitation of oligomers included in the resin film on the surface of the sheet material when alcohol permeates through the polyamide-based resin film.

Abstract: An air-permeable packaging material which includes a non-perforated polyolefin layer having a thickness of 3 ?m to 18 ?m and constituted of at least one polymer selected from the group consisting of polypropylene and polyethylene and a net-shaped reinforcing layer; a package which includes the air-permeable packaging material, the non-perforated polyolefin layer facing outward, and which contains an oxygen scavenger, a desiccant, a deodorant, an insect repellent, or a fragrance; and a method for producing the package.

Abstract: The sound absorbing material according to the present invention is formed by laminating a porous sound absorber and two or more sheets of a nonwoven fabric one on another. The nonwoven fabric has a plurality of drawn filaments arranged and oriented in one direction. The mode value of the diameter distribution of the plurality of filaments is in the range of 1 to 4 ?m. The grammage of the nonwoven fabric is in the range of 5 to 40 g/m2. The sound absorbing material according to the present invention provides high sound absorption performance in a predetermined low frequency band of 6000 Hz or less, and still remains light in weight and flexible enough and easy enough to handle to be substantially comparable to the porous sound absorber.

Abstract: A nonwoven sound absorbing material according to the present invention includes a nonwoven laminate formed of a stack of a plurality of sheets of a filament nonwoven fabric having a plurality of drawn filaments arranged and oriented in one direction, and the mode value of the diameter distribution of the plurality of drawn filaments is 1 to 4 ?m. The nonwoven sound absorbing material according to the present invention has improved sound absorption performance in a relatively low frequency band as compared to a conventional one.

Abstract: A substrate 2 of an adhesive tape 1 includes a mesh structure made of thermoplastic resin. The mesh structure has a structure in which multiple first fibers drawn in a first direction corresponding to a length direction of the adhesive tape and multiple second fibers drawn in a second direction corresponding to a width direction of the adhesive tape are layered or woven. (a) A first fiber has a thickness of 0.04 mm or less, and a width of 0.6 mm or less, (b) a second fiber has a thickness greater than that of the first fiber, and a width greater than or equal to that of the first fiber, (c) the mesh structure has a tensile strength in the first direction of from 130 to 250 N/50 mm, (d) the mesh structure has a bending resistance in the first direction obtained by a cantilever test of from 40 to 80 mm, and (e) the mesh structure has a bending resistance in the second direction obtained by the cantilever test of from 65 to 95 mm.

Abstract: A nonwoven fabric for sound absorbing application according to the present invention includes a plurality of drawn filaments arranged and oriented in one direction, and the mode value of the diameter distribution of the plurality of drawn filaments is 1 to 4 ?m. When laminated on a porous sound absorbing material, the nonwoven fabric for sound absorbing application according to the present invention constitutes a sound absorbing material with the porous sound absorbing material, and the resultant laminated sound absorbing material has improved sound absorption performance in the frequency band of 1000 to 10000 Hz as compared to the porous sound absorbing material alone.

Abstract: An apparatus and method are provided to remove matte-sticking adhered to an inner surface of an inclined rear jacket of an exhaust gas hood for collecting exhaust gas discharged during the converter operation in copper smelting. Scraping means 10a˜10f are each provided with a scraping part 20 for scraping off matte-sticking by moving slidably across the inner surface of the rear jacket 8 by driving means 11 from a sidewall of the exhaust gas hood to at least over the centerline L of the width of the rear jacket 8. The scraping means are arranged in pairs at both right and left sidewalls of the exhaust gas hood 6 in multiple levels along the inclination of the rear jacket 8, thereby allowing the matte-sticking adhered to the rear jacket 8 to be removed over almost its entire surface.

Abstract: An inspection hole structure 1 forming a furnace inspection hole 2 installed on the reaction shaft ceiling 104 of a flash smelting furnace, comprising a lower-stage water-cooling jacket 3A having an opening 3Aa at the center; an upper-stage water-cooling jacket 3B which is connected integrally to an upper part of said lower-stage water-cooling jacket 3A and forms said inspection hole 2 at the center in cooperation with said lower-stage water-cooling jacket 3A; and a bottom cover water-cooling jacket 4 provided in said lower-stage water-cooling jacket 3A to open or close said opening of said lower-stage water-cooling jacket 3A.

Abstract: A transfer pipe of dried concentrate for transferring dried concentrate, having a double pipe structure, comprising an inner pipe 2 through which the dried concentrate is transferred by compressed air, an outer pipe 3 arranged around the outer periphery of the inner pipe 2, and a joint flange 5 forming an annular space 4 sealed between the inner pipe 2 and the outer pipe 3, arranged at both ends of the inner pipe 2 and the outer pipe 3, and integrally fixing the inner pipe 2 and the outer pipe 3; wherein the inner pipe 2 is positioned inside the outer pipe 3 and is formed of a metal pipe 2a forming the annular space 4, a ceramic sleeve 2c forming an innermost layer of the metal pipe, and a filler 2b for fixing the ceramic sleeve 2c provided between the metal pipe 2a and the ceramic sleeve 2c.

Abstract: A transfer pipe of dried concentrate for transferring dried concentrate, having a double pipe structure, comprising an inner pipe 2 through which the dried concentrate is transferred by compressed air, an outer pipe arranged around the outer periphery of the inner pipe 2, and a joint flange 5 forming an annular space 4 sealed between the inner pipe 2 and the outer pipe 3, arranged at both ends of the inner pipe 2 and the outer pipe 3, and integrally fixing the inner pipe 2 and the outer pipe 3; wherein the inner pipe 2 is positioned inside the outer pipe and is formed of a metal pipe 2a forming the annular space 4, a ceramic sleeve 2c forming an innermost layer of the metal pipe, and a filler 2b for fixing the ceramic sleeve 2c provided between the metal pipe 2a and the ceramic sleeve 2c.

Abstract: An apparatus and method are provided to remove matte-sticking adhered to an inner surface of an inclined rear jacket of an exhaust gas hood for collecting exhaust gas discharged during the converter operation in copper smelting. Scraping means 10a˜10f are each provided with a scraping part 20 for scraping off matte-sticking by moving slidably across the inner surface of the rear jacket 8 by driving means 11 from a sidewall of the exhaust gas hood to at least over the centerline L of the width of the rear jacket 8. The scraping means are arranged in pairs at both right and left sidewalls of the exhaust gas hood 6 in multiple levels along the inclination of the rear jacket 8, thereby allowing the matte-sticking adhered to the rear jacket 8 to be removed over almost its entire surface.

Abstract: An inspection hole structure 1 forming a furnace inspection hole 2 installed on the reaction shaft ceiling of a flash smelting furnace, comprising a lower-stage water-cooling jacket 3A having an opening 3Aa at the center; an upper-stage water-cooling jacket 3B which is connected integrally to an upper part of said lower-stage water-cooling jacket 3A and forms said inspection hole 2 at the center in cooperation with said lower-stage water-cooling jacket 3A; and a bottom cover water-cooling jacket 4 provided in said lower-stage water-cooling jacket 3A to open or close said opening of said lower-stage water-cooling jacket 3A.

Abstract: The present invention relates to an ethylene-&agr;-olefin copolymer; a composition thereof; a film thereof; a polar group-containing resin material; and productions and use of the ethylene-&agr;-olefin copolymer. The ethylene-&agr;-olefin copolymer of the present invention is characterized in satisfying the following conditions (A) to (E): (A) a density in the range of 0.92 to 0.96 g/cm3; (B) a melt flow rate (MFR) in the range of 0.01 to 200 g/10 min; (C) a molecular weight distribution (Mw/Mn) in the range of 1.5 to 5.