An object of the present disclosure is to provide a filter medium for an air filter which does not contain a PFAS nor a siloxane compound and has a good physical property balance among the PF value, the water repellency, and the strength. A filter medium for an air filter according to the present disclosure is a filter medium for an air filter composed of a wet-laid nonwoven fabric, wherein the filter medium for an air filter contains a binder resin and a water repellent, the water repellent contains, as a main component, a hydrocarbon-based polymer free of fluorine and silicon in a molecule thereof, and the binder resin and the water repellent are crosslinked by an isocyanate crosslinking component.
D04H 1/587 - Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives characterised by the bonding agents used
D04H 1/645 - Impregnation followed by a solidification process
D06M 13/203 - Unsaturated carboxylic acidsAnhydrides, halides or salts thereof
D06M 13/50 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials with non-macromolecular organic compoundsSuch treatment combined with mechanical treatment with organometallic compoundsTreating fibres, threads, yarns, fabrics or fibrous goods made from such materials with non-macromolecular organic compoundsSuch treatment combined with mechanical treatment with organic compounds containing boron, silicon, selenium or tellurium atoms
D06M 13/53 - CoolingSteaming or heating, e.g. in fluidised bedsTreating fibres, threads, yarns, fabrics or fibrous goods made from such materials with non-macromolecular organic compoundsSuch treatment combined with mechanical treatment combined with mechanical treatment with molten metals
D06M 101/00 - Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
D21H 13/40 - Inorganic fibres or flakes siliceous vitreous, e.g. mineral wool or glass fibres
An electromagnetic wave noise suppression sheet having high electromagnetic wave noise suppression performance and thermal conductivity includes a first layer substantially containing carbon nanotubes and carboxymethylcellulose. In the first layer, a ratio of a mass of the carboxymethylcellulose to a mass of the carbon nanotubes is 1/5 or more and 3 or less.
A system and method are presented for recovering heat from flue gas produced by a recovery boiler in a pulp and paper mill, the recovery boiler having a flue stack. Flue gas is drawn from the flue stack and passed through a first and second condensing heat exchangers before exiting through a separate stack. The first heat exchanger is used to heat boiler feedwater whereas the second heat exchanger is used to produce process hot water for use in the pulp and paper mill. Steam previously used to heat the boiler feedwater and produce the process hot water can now be used to generate electricity that can be used for the pulp and paper mill operations or to export to the electrical power grid.
The purpose of the present disclosure is to provide a filter material for an air filter, the filter material containing a renewable material, having biodegradability, and further having sufficient water repellency. According to the present disclosure, the filter material for an air filter comprises a wet nonwoven fabric and is characterized in that fibers constituting the filter material include beaten fibers and non-beaten fibers, the beaten fibers are fibrillated Lyocell fibers, the non-beaten fibers are biodegradable fibers, and the filter material includes an alkyl ketene dimer.
A method for producing a filter material for an air filter according to the present disclosure includes: an adhering step of getting a polyvinyl alcohol aqueous solution adhering to a support, having fluid permeability, to bring the support into a wet state; and a drying step of drying the polyvinyl alcohol aqueous solution adhering to the support in the wet state at 140° C. or higher, in which the polyvinyl alcohol aqueous solution contains no other binder resins than polyvinyl alcohol, and the support, after the drying step, has the mesh-like network of polyvinyl alcohol, in the pore serving as a fluid permeation path, by drying the polyvinyl alcohol aqueous solution.
An electromagnetic wave noise suppression sheet having high electromagnetic wave noise suppression performance and thermal conductivity and reducing cost includes a first layer containing carbon nanotubes, an inorganic filler, and carboxymethylcellulose. The inorganic filler is at least one selected from the group consisting of graphite, carbon black, and an inorganic pigment. A ratio of a mass of the inorganic filler to a mass of the carbon nanotubes is ¼ or more and 2 or less.
The present disclosure addresses the problem of providing a filter material that is for air filters and that does not contain PFAS or siloxane compounds and has an excellent physical property balance of PF value, water repellency, and strength. A filter material for air filters according to the present disclosure is formed of a wet nonwoven fabric, and is characterized by containing a binder resin and a water-repellent agent and is characterized in that the water-repellent agent contains, as a main component, an acrylic polymer not including fluorine or silicon in the molecule. A method for manufacturing a filtering material for air filters according to the present disclosure is characterized by comprising: a step for forming a moist sheet by shaping a slurry of fibers into a sheet by a wet papermaking method; a step for impregnating the moist sheet with an aqueous dispersion liquid that contains a binder resin and a water-repellent agent containing, as a main component, an acrylic polymer that does not include fluorine or silicon in the molecule; and a step for obtaining a dry sheet by heating the moist sheet impregnated with the aqueous dispersion liquid to dry the same.
The purpose of the present disclosure is to provide an air-filter filter material having an improved filtering performance and good water repellency as a result of using a polyvinyl alcohol, a cationic surfactant, and a water repellent, and disposing a mesh-like network of the polyvinyl alcohol in pores of a fluid permeable passage in a supporting body. A method for producing an air-filter filter material according to the present disclosure comprises: an application step for applying an aqueous polyvinyl alcohol solution to a supporting body having fluid permeability, to bring the supporting body into a wet state; and a drying step for drying the aqueous polyvinyl alcohol solution adhering to the supporting body in the wet state at 140°C or higher. The aqueous polyvinyl alcohol solution contains a cationic surfactant and a water repellent and does not contain any binder resin other than the polyvinyl alcohol; and the supporting body, after being subjected to the drying step, has a mesh-like network of the polyvinyl alcohol in pores that serve as fluid permeable passages, as a result the aqueous polyvinyl alcohol solution being dried.
An object of the present disclosure is to provide a filter medium for air filters that has a high PF value and high water repellency in addition to stiffness and strength that are practically sufficient, and to provide the filter medium with an easy production method. The filter medium, composed of a wet-laid nonwoven fabric including a glass fiber, for air filters according to the present disclosure includes a cationic binder resin, a fluororesin, and a cationic surfactant, and the solid content mass ratio of the fluororesin to the cationic surfactant is within a range of 30/70 to 80/20.
B01J 20/10 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
B01J 20/28 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof characterised by their form or physical properties
B01J 20/30 - Processes for preparing, regenerating or reactivating
D21H 19/12 - Coatings without pigments applied as a solution using water as the only solvent, e.g. in the presence of acid or alkaline compounds
D04H 1/732 - Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by fluid current, e.g. air-lay
D04H 1/587 - Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives characterised by the bonding agents used
D04H 1/64 - Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions
B01D 39/20 - Other self-supporting filtering material of inorganic material, e.g. asbestos paper or metallic filtering material of non-woven wires
A system and method are presented for recovering heat from flue gas produced by a recovery boiler in a pulp and paper mill, the recovery boiler having a flue stack. Flue gas is drawn from the flue stack and passed through a first and second condensing heat exchangers before exiting through a separate stack. The first heat exchanger is used to heat boiler feedwater whereas the second heat exchanger is used to produce process hot water for use in the pulp and paper mill. Steam previously used to heat the boiler feedwater and produce the process hot water can now be used to generate electricity that can be used for the pulp and paper mill operations or to export to the electrical power grid.
A system and method are presented for recovering heat from flue gas produced by a recovery boiler in a pulp and paper mill, the recovery boiler having a flue stack. Flue gas is drawn from the flue stack and passed through a first and second condensing heat exchangers before exiting through a separate stack. The first heat exchanger is used to heat boiler feedwater whereas the second heat exchanger is used to produce process hot water for use in the pulp and paper mill. Steam previously used to heat the boiler feedwater and produce the process hot water can now be used to generate electricity that can be used for the pulp and paper mill operations or to export to the electrical power grid.
The present disclosure addresses the problem of providing a filter medium for an air filter, the filter medium having a high PF value and a high level of water repellency, and not containing a PFAS or a siloxane compound. The filter medium for an air filter according to the present disclosure comprises a wet-laid nonwoven fabric containing glass fibers having a fiber diameter of less than 1 µm, and is characterized in that the wet-laid nonwoven fabric: contains a water repellent agent that contains, as a main component, a hydrocarbon-based polymer that does not contain fluorine or silicon in the molecule; and does not contain a binder resin.
B01D 39/20 - Other self-supporting filtering material of inorganic material, e.g. asbestos paper or metallic filtering material of non-woven wires
B01D 46/10 - Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
D06M 13/02 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials with non-macromolecular organic compoundsSuch treatment combined with mechanical treatment with hydrocarbons
16.
FILTER MATERIAL FOR AIR FILTER AND METHOD FOR PRODUCING FILTER MATERIAL
The present disclosure addresses the problem of providing a filter material for an air filter that does not contain PFAS or siloxane compounds and has an excellent physical property balance of PF value, water repellency, and strength. The filter material for an air filter according to the present disclosure is composed of a wet non-woven fabric, the filter material being characterized by containing a binder resin and a water repellent, the water repellent being mainly composed of a hydrocarbon-based polymer that does not contain fluorine or silicon in the molecule, and the binder resin and the water repellent agent being crosslinked by an isocyanate crosslinking component.
B01D 39/20 - Other self-supporting filtering material of inorganic material, e.g. asbestos paper or metallic filtering material of non-woven wires
B01D 46/10 - Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
D06M 13/02 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials with non-macromolecular organic compoundsSuch treatment combined with mechanical treatment with hydrocarbons
A method of producing an electromagnetic wave shielding sheet by which an electromagnetic wave shielding sheet having a high shielding property against an electromagnetic wave and having low cost is produced. The method of producing an electromagnetic wave shielding sheet includes; preparing a dispersion containing carbon nanotubes, an inorganic pigment, carboxymethyl cellulose, and water; and drying the dispersion. In the dispersion, a ratio of a mass of the inorganic pigment to a mass of the carbon nanotubes is 1/4 or more and 1 or less
The present disclosure addresses the problem of providing a filter material, for air filters, containing a renewable material as a main component, having biodegradability, and having sufficient water repellency. The filter material for air filters according to the present disclosure is characterized in that fibers forming the filtering material include beaten fibers and un-beaten fibers, the beaten fibers are fibrillated lyocell fibers, the un-beaten fibers are biodegradable fibers, the mass ratio (beaten fibers/un-beaten fibers) of the beaten fibers with respect to the un-beaten fibers is in a range of 3/97 to 20/80, and the filtering material contains a water repellent containing, as a main component, a hydrocarbon-based polymer not including fluorine in the molecule thereof.
A method of producing a carbon nanotube aqueous dispersion having satisfactory dispersibility. The method of producing a carbon nanotube aqueous dispersion includes: preparing mixed liquids by mixing carbon nanotubes, carboxymethyl cellulose and water; and dispersing the carbon nanotubes contained in the mixed liquids by an aqueous counter collision method, wherein a ratio of a mass of the carboxymethyl cellulose to a mass of the carbon nanotubes in the mixed liquids is 1/7 or more.
C08J 3/215 - Compounding polymers with additives, e.g. colouring in the presence of a liquid phase the polymer being premixed with a liquid phase at least one additive being also premixed with a liquid phase
20.
FILTER MATERIAL FOR AIR FILTER AND PRODUCTION METHOD THEREFOR
The purpose of the present disclosure is to provide a filter material which is for an air filter and which has improved particle capturing ability by providing, in a relatively random manner in the in-plane direction and the thickness direction of a supporting body, a mesh-like network of a polyvinyl alcohol in pores of fluid passage paths of the supporting body. The method for producing a filter material for an air filter according to the present disclosure comprises: an attachment step for attaching an aqueous polyvinyl alcohol solution to a supporting body having fluid permeability, so that the supporting body is set in a wet state; and a drying step for drying the aqueous polyvinyl alcohol solution attached to the supporting body in the wet state at 140°C or higher. The aqueous polyvinyl alcohol solution does not contain any binder resin other than the polyvinyl alcohol, and the supporting body, after being subjected to the drying step, has a mesh-like network of the polyvinyl alcohol in pores that serve as fluid passage paths, due to drying of the aqueous polyvinyl alcohol solution.
D06M 15/333 - Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated alcohols or esters thereof of vinyl acetatePolyvinylalcohol
21.
ELECTROMAGNETIC WAVE NOISE SUPPRESSING SHEET AND PRODUCTION METHOD THEREFOR
Provided is an electromagnetic wave noise suppressing sheet that has an electromagnetic wave noise suppressing function and exhibits high thermal conductivity. An electromagnetic wave noise suppressing sheet 100 according to the present invention includes a first layer 10 substantially composed of carbon nanotubes and carboxymethyl cellulose, wherein the ratio of the mass of the carboxymethyl cellulose to the mass of the carbon nanotubes in the first layer 10 is in the range of 1/5 to 3.
Provided is an electromagnetic wave noise suppressing sheet that has an electromagnetic wave noise suppressing function, exhibits high thermal conductivity, and is inexpensive. An electromagnetic wave noise suppressing sheet 100 according to the present invention includes a first layer 10 that contains carbon nanotubes, an inorganic filler, and carboxymethyl cellulose, wherein the inorganic filler is at least one substance selected from the group consisting of graphite, carbon black, and inorganic pigments, and the ratio of the mass of the inorganic filler to the mass of the carbon nanotubes is in the range of 1/4 to 2.
The present disclosure relates to a filter medium for air purification, said filter medium being provided with a base material, and an enzyme and glycine which are supported by the base material. With respect to this filter medium for air purification, the enzyme comprises at least one enzyme that is selected from the group consisting of β-1, 3-glucanase, chitinase, lysozyme, protease, glycosidase, β-galactosidase, endo-β-N-acetylglucosaminidase and endolysin.
The present disclosure addresses the problem of providing: a filter medium for air filters, said filter medium achieving a high PF value and high water repellency, while having practically sufficient stiffness and strength; and a method for easily producing this filter medium. A filter medium for air filters according to the present disclosure is formed of a wet nonwoven fabric that contains glass fibers, and this filter medium for air filters is characterized in that a cationic binder resin, a fluorine resin and a cationic surfactant are contained in this filter medium, and the solid content mass ratio of the fluorine resin to the surfactant is within the range of from 30/70 to 80/20.
The purpose of the present disclosure is to provide a nanonetwork that exhibits a very fine fiber diameter and numerous holes. A method according to the present disclosure for producing a nanonetwork is a method for producing a nanonetwork for which the main component is a water-soluble polymer, wherein the method is characterized by comprising a step for drying, under reduced pressure, a water-soluble polymer solution in which the solids concentration of the water-soluble polymer is 0.001 mass% or more and less than 0.1 mass%.
C08L 101/14 - Compositions of unspecified macromolecular compounds characterised by physical features, e.g. anisotropy, viscosity or electrical conductivity the macromolecular compounds being water soluble or water swellable, e.g. aqueous gels
C08J 9/28 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof by elimination of a liquid phase from a macromolecular composition or article, e.g. drying of coagulum
26.
AIR FILTER MEDIUM PRODUCTION METHOD AND AIR FILTER PRODUCTION METHOD
The purpose of the present disclosure is to provide methods for safely producing an air filter medium and an air filter that achieve improved filtering performance, in particular, particle capturing performance. An air filter medium production method according to the present disclosure comprises: an attachment step for attaching a water-soluble polymer solution which contains a water-soluble polymer and a solvent to a supporting body having fluid permeability; and a reduced-pressure drying step for subjecting the supporting body having undergone said attachment step to reduced-pressure drying.
Provided is an electromagnetic wave shield sheet manufacturing method by which an electromagnetic wave shield sheet that has a high shielding performance against electromagnetic waves and that is low cost is manufactured. This electromagnetic wave shield sheet manufacturing method comprises: a step for producing a dispersion liquid containing carbon nanotubes, an inorganic pigment, carboxymethyl cellulose, and water; and a step for drying the dispersion liquid. In the dispersion liquid, the ratio of the mass of the inorganic pigment to the mass of the carbon nanotubes is from 1/4 to 1, inclusive.
Provided is a method for manufacturing a carbon nanotube aqueous dispersion with good dispersion characteristics. The method for manufacturing a carbon nanotube aqueous dispersion according to the present invention includes: a step for mixing carbon nanotubes, carboxymethylcellulose, and water to prepare a liquid mixture; and a step for dispersing the carbon nanotubes, contained in the liquid mixture, by using an aqueous counter collision method, wherein the ratio of the mass of the carboxymethylcellulose to the mass of the carbon nanotubes in the liquid mixture is at least 1/7.
B82Y 30/00 - Nanotechnology for materials or surface science, e.g. nanocomposites
B82Y 40/00 - Manufacture or treatment of nanostructures
C08J 3/215 - Compounding polymers with additives, e.g. colouring in the presence of a liquid phase the polymer being premixed with a liquid phase at least one additive being also premixed with a liquid phase
A water- and oil-repellent agent contains cellulose nanofibers, a compound having at least one functional group of an oxazoline group, a carbodiimide group, an epoxy group and an isocyanate group, as a crosslinking agent, and a perfluoroalkyl compound.
The purpose of the present disclosure is to provide: a dispersion liquid in which nanocarbon such as carbon nanotubes is stably dispersed and which exhibits good fluidity, and a method for producing same; and a nanocarbon dispersing agent that is added in order to obtain the dispersion liquid. This nanocarbon dispersion liquid contains nanocarbon, cellulose nanocrystals and a dispersion medium.
The purpose of the present disclosure is to provide: (1) a dispersion liquid in which nanocarbon such as carbon nanotubes is stably dispersed and which exhibits good fluidity, and a method for producing same; (2) a nanocarbon dispersing agent that is added in order to obtain the dispersion liquid; and (3) an electromagnetic wave-shielding material. This nanocarbon dispersion liquid contains nanocarbon, cellulose nanocrystals and a dispersion medium.
A process for manufacturing a porous body, includes preparing a dispersion liquid having a dispersion medium with cellulose-based nanofibers that have an average fiber diameter from 1 to 100 nm and dispersed therein, attaching the dispersion liquid to a porous support having a plurality of pores that connect with one another, removing the dispersion liquid attached to a surface of the porous support excluding an inside of pores of the porous support, and subsequently drying the porous support including the dispersion liquid in the pores of the porous support to remove the dispersion medium.
The purpose of the present invention is to provide a packaging paper in which the amount of plastic used is reduced. The present invention pertains to packaging paper that includes at least one heat-seal layer on at least one surface of a base paper, wherein the packaging paper is characterized in that: the heat-seal layer contains an ionomer; and the dry coat amount for all layers of the heat-seal layer is 2-10g/m2.
D21H 19/20 - Coatings without pigments applied in a form other than the aqueous solution defined in group comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
B32B 27/10 - Layered products essentially comprising synthetic resin as the main or only constituent of a layer next to another layer of a specific substance of paper or cardboard
D21H 19/82 - Paper comprising more than one coating superposed
35.
WATER REPELLENT OIL REPELLENT AGENT AND METHOD FOR PRODUCING SAME, AND WATER REPELLENT OIL REPELLENT PRODUCT AND METHOD FOR PRODUCING SAME
The purpose of the present disclosure is to provide: a water repellent oil repellent agent which has excellent water repellency and oil repellency, while having relatively low possibility of being hazardous; a method for producing this water repellent oil repellent agent; a water repellent oil repellent product; and a method for producing a water repellent oil repellent product. A water repellent oil repellent agent according to the present disclosure contains cellulose nanofibers, while containing, as crosslinking agents, a perfluoroalkyl compound and a compound which has at least one functional group that is selected from among an oxazoline group, a carbodiimide group, an epoxy group and an isocyanate group.
C09K 3/18 - Materials not provided for elsewhere for application to surface to minimize adherence of ice, mist or water theretoThawing or antifreeze materials for application to surfaces
C08J 3/24 - Crosslinking, e.g. vulcanising, of macromolecules
D06M 13/11 - Compounds containing epoxy groups or precursors thereof
The purpose of the present invention is to provide: a water-and-oil repellent which is excellent in terms of water repellency and oil repellency and is relatively less harmful; a method for producing the water-and-oil repellent; a water-and-oil repellent product; and a method for producing the water-and-oil-repellent product. The water-and-oil repellent comprises cellulose nanofibers, a compound having at least one functional group selected from among oxazoline, carbodiimide, epoxy, and isocyanate groups, and a perfluoroalkyl compound.
C09K 3/18 - Materials not provided for elsewhere for application to surface to minimize adherence of ice, mist or water theretoThawing or antifreeze materials for application to surfaces
C08J 3/24 - Crosslinking, e.g. vulcanising, of macromolecules
D06M 13/11 - Compounds containing epoxy groups or precursors thereof
A method for manufacturing a filter medium for an air filter having improved particle collection performance using cellulose nanofibers. The method for manufacturing a filter medium for an air filter comprises: causing a mixed solution containing cellulose nanofibers and a dispersion medium to adhere to an air-permeable support; and subsequently freeze-drying the resulting product, in which a number average fiber diameter of the cellulose nanofibers is 1 to 50 nm, the dispersion medium is a mixed dispersion medium of water and a water-soluble organic solvent, and a solid content concentration of the cellulose nanofibers in the mixed solution is 0.001 to 0.150% by mass.
01 - Chemical and biological materials for industrial, scientific and agricultural use
16 - Paper, cardboard and goods made from these materials
17 - Rubber and plastic; packing and insulating materials
24 - Textiles and textile goods
Goods & Services
Wood pulp for manufacturing purposes Paper and cardboard; industrial packaging containers of paper; printed matter, namely, notecards, business cards, postcards, printed paper signs, adhesive backed stickers, pamphlets and catalogs in the field of pulp and paper manufacturing Vulcanized fiber Non-woven fabrics
01 - Chemical and biological materials for industrial, scientific and agricultural use
16 - Paper, cardboard and goods made from these materials
17 - Rubber and plastic; packing and insulating materials
24 - Textiles and textile goods
Goods & Services
Wood pulp for manufacturing purposes Paper and cardboard; industrial packaging containers of paper; printed matter, namely, notecards, business cards, postcards, printed paper signs, adhesive backed stickers, pamphlets and catalogs in the field of pulp and paper manufacturing Vulcanized fiber Non-woven fabrics
01 - Chemical and biological materials for industrial, scientific and agricultural use
16 - Paper, cardboard and goods made from these materials
17 - Rubber and plastic; packing and insulating materials
24 - Textiles and textile goods
Goods & Services
(1) Pulp, namely, paper pulp, wood pulp
(2) Paper and cardboard; containers of paper, for packaging; printed matter, namely, books, pamphlets, brochures, newspapers, magazines, catalogues
(3) Vulcanized fiber
(4) Non-woven textile fabrics
48.
PRETENSIONED TENSION MEMBER, METHOD FOR MANUFACTURING PRETENSIONED TENSION MEMBER, CONSTRUCTION METHOD USING PRETENSIONED TENSION MEMBER, AND METHOD FOR INTRODUCING PRETENSION TO CONCRETE
Provided is a pretensioned tension member that uses a high-strength reinforcing bar (SD 390 or higher) as a pretensioned tension member and that is capable of easily being secured at the shortest required fixing length of the pretensioned tension member when a fixing apparatus is not used. A pretensioned tension member S according to the present invention has, on the end side of a bar-shaped base material 10 (high-strength reinforcing bar) to be tensioned, at least one projected hump 11 formed around the base material 10, the hump 11 being made of the same material as that of the base material 10 and being larger in diameter by 1.5 times than the base material 10.
E04G 21/12 - Mounting of reinforcing insertsPrestressing
B28B 23/04 - Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material wherein the elements are reinforcing members the elements being stressed
E04C 5/03 - Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance, i.e. of essentially one-or two-dimensional extent with indentations, projections, ribs, or the like, for augmenting the adherence to the concrete
E04C 5/08 - Members specially adapted to be used in prestressed constructions
01 - Chemical and biological materials for industrial, scientific and agricultural use
16 - Paper, cardboard and goods made from these materials
17 - Rubber and plastic; packing and insulating materials
24 - Textiles and textile goods
Goods & Services
Wood pulp for manufacturing purposes Paper and cardboard; industrial packaging containers of paper; Printed matter, namely, notecards, business cards, postcards, printed paper signs and adhesive backed stickers, pamphlets, catalogs in the field of pulp and paper manufacturing Vulcanized fiber Non-woven fabrics
The purpose of the present invention is to provide a method for manufacturing a filter medium for an air filter in which particle-collection performance is improved using cellulose nanofibers. The method for manufacturing a filter medium for an air filter according to the present invention is a method in which a liquid mixture that contains cellulose nanofibers and a dispersion medium is caused to adhere to an air-permeable support, whereupon freeze-drying is performed, wherein the number-average fiber diameter of the cellulose nanofibers is 1-50 nm, the dispersion medium comprises a mixture of water and a water-soluble organic solvent, and the solids concentration of the cellulose fibers in the liquid mixture is 0.001-0.150% by mass.
D21H 15/02 - Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution characterised by configuration
A method for producing a wet-laid nonwoven fabric for a semipermeable membrane supporting body, the method comprising: performing papermaking according to a wet papermaking method by using a fiber slurry containing a synthetic fiber as a main constituent fiber; drying the fiber slurry; subsequently subjecting the dried sheet to hot press processing two times by using a heat calender apparatus, wherein the hot press process temperature in the second treatments is adjusted to be higher by 10° C. or more than the hot press processing temperature in the first treatment, while treating the dried sheet by using a hard nip heat calender apparatus equipped with a combination of a metal roll and a metal roll for at least one time of the hot press processing; and thereby obtaining a wet-laid nonwoven fabric for a semipermeable membrane supporting body.
D04H 1/732 - Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by fluid current, e.g. air-lay
D04H 1/04 - Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres having existing or potential cohesive properties, e.g. natural fibres, prestretched or fibrillated man-made fibres
A filter media for an air filter having a PF value higher than ever, and an air filter provided with the same. The filter media for an air filter is composed of wet-laid nonwoven fabric containing a glass fiber having an average fiber diameter of less than 1 and a binder fiber, and wherein the wet-laid nonwoven fabric contains a fluorine resin and a surfactant, and does not contain a resin binder or contains a binder resin in an amount of 50% by mass or less based on the fluorine resin.
D21H 15/02 - Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution characterised by configuration
F24F 3/16 - Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by purification, e.g. by filteringAir-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by sterilisationAir-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by ozonisation
55.
Nonwoven fabric for semipermeable membrane support
Provided is a nonwoven fabric for semipermeable membrane support, in which adhesiveness of a semipermeable membrane to a support is satisfactory, the thickness uniformity of the semipermeable membrane is satisfactory, and permeation-through of a coating liquid does not occur. Disclosed is a nonwoven fabric for semipermeable membrane support, in which when a region extending from the semipermeable membrane-coated side surface of the nonwoven fabric to a predetermined portion of the total basis weight in the thickness direction is designated as a coated layer region, a region extending from the non-semipermeable membrane-coated surface of the nonwoven fabric to a predetermined portion of the total basis weight in the thickness direction is designated as a non-coated layer region, and a region obtained by excluding the respective predetermined portions of the total basis weight in the thickness direction from both the semipermeable membrane-coated side surface and the non-semipermeable membrane-coated surface of the nonwoven fabric is designated as a middle layer region, the pressure drop per unit basis weight of the middle layer region after the exclusion is lower than the pressure drop per unit basis weight of the coated layer region and the pressure drop per unit basis weight of the non-coated layer region, and the pressure drop per unit basis weight of the middle layer region after the exclusion is in the range of 10% to 70% relative to the pressure drop per unit basis weight of the nonwoven fabric before the exclusion. The predetermined portion is defined to be about 25%.
B32B 5/02 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by structural features of a layer comprising fibres or filaments
56.
Porous cellulose body and method for producing same
A porous body that contains cellulose nanofibers having very thin fiber diameters and high hydrophilicity, and has a large specific surface area, and to provide a method of producing the porous body simply with low cost. A method of producing a porous cellulose comprises a process of lyophilizing a mixed liquid containing cellulose nanofibers and a dispersion medium, wherein the dispersion medium is a mixed dispersion medium of water and an organic solvent dissolving in water, a concentration of the organic solvent in the mixed dispersion medium is 2 to 40 mass %, and a solid content concentration of the cellulose nanofibers in the mixed liquid is 0.001 to 5 mass %.
F26B 5/06 - Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum the process involving freezing
C08J 9/28 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof by elimination of a liquid phase from a macromolecular composition or article, e.g. drying of coagulum
C08B 15/04 - Carboxycellulose, e.g. prepared by oxidation with nitrogen dioxide
D21H 11/20 - Chemically or biochemically modified fibres
01 - Chemical and biological materials for industrial, scientific and agricultural use
16 - Paper, cardboard and goods made from these materials
17 - Rubber and plastic; packing and insulating materials
24 - Textiles and textile goods
Goods & Services
Chemical test paper; paper pulp; wood pulp; chemicals for
use in photography; chemicals for use in industry; chemicals
for use in agriculture; chemicals for use in science;
industrial glues; industrial adhesives; oil cement;
non-metal minerals. Filter paper including filter paper made mainly of glass
fiber and/or synthetic fiber; inorganic paper [sheets made
mainly of inorganic material and fiber such as diatomaceous
soil]; paper; stationery; printed matter; printers' reglets;
letters type; addressing machines; inking ribbons; automatic
stamp affixing machines; electric office staplers; sealing
machines for offices; stamp obliterating machines; drawing
instruments; typewriters, electric or non-electric;
mimeographs; relief duplicators; paper shredders; postage
meters for office use; rotary duplicators; packaging
containers of paper; hygienic paper; towels of paper; table
napkins of paper; hand towels of paper; handkerchiefs of
paper. Insulating paper; insulating fabrics; insulating materials;
condenser paper [paper for insulating purposes]; vulcanized
fiber; asbestos paper; semi-worked plastic products made
with glass fiber; plastic substances, semi-processed;
plastic sheeting for agricultural purposes; rock wool for
insulation; slag wool [insulator]. Non-woven fabric made mainly of glass fiber and/or synthetic
fiber; non-woven fabric for filtering use; non-woven fabrics
and felts; knitted fabric; fabric; oilcloth; gummed
waterproof cloth; rubberized cloth; filtering materials of
textile; woven textile goods for personal use; mosquito
nets; bed sheets; futon quilts; duvet covers; tick [linen];
pillowcases; bed blankets; textile wall hangings; curtains;
table cloths of textile; drapery.
60.
POROUS CELLULOSE BODY AND METHOD FOR PRODUCING SAME
The purpose of the present invention is to provide: a porous body which has a large specific surface area and contains cellulose nanofibers that have extremely thin fiber diameters and high hydrophilicity; and a method for easily producing the porous body at low cost. A method for producing a porous cellulose body according to the present invention comprises a step for freeze-drying a liquid mixture that contains cellulose nanofibers and a dispersion medium. In this method, the dispersion medium is a mixed dispersion medium of water and an organic solvent that is soluble in water, the concentration of the organic solvent in the mixed dispersion medium is 2-40% by mass, and the solid content concentration of the cellulose nanofibers in the liquid mixture is 0.001-5% by mass.
The purposes of the present invention are: to provide a fluid -permeable porous body which contains cellulosic nanofibers that have extremely small fiber diameters and that exhibit high hydrophilicity; and to manufacture the porous body at a low cost. A porous body composed of a porous support that has many interconnected pores in which nanofibers are entangled with each other and thus form a network structure, characterized in that the nanofibers are cellulosic nanofibers having a number-average fiber diameter of 1 to 100nm.
16 - Paper, cardboard and goods made from these materials
Goods & Services
Art paper; copying paper; filtering materials of paper; fine paper; laser printing paper; packing paper; paper for photocopying; paper for wrapping; paper sheets [stationery]; printing paper; recycled paper; tracing paper; transfer paper; waterproof paper; waxed paper; writing paper; xerographic paper; paper, cardboard and goods made from these materials, not included in other classes; printed matter; bookbinding material; photographs; stationery; adhesives for stationery or household purposes; artists' materials; paint brushes; typewriters and office requisites (except furniture); instructional and teaching material (except apparatus); plastic materials for packaging (not included in other classes); printers' type; printing blocks.
