Abrégé

An object of the present invention is to provide an apparatus and method for producing a nanofiber by using a melt blown method improving productivity. An object of the present invention is to provide an apparatus and method for producing a nanofiber by using a melt blown method improving productivity. A pellet-shaped raw material (resin) fed into a hopper 2 is supplied and melted in a heating cylinder 3 heated by a heater 4, and sent to a front part of the heating cylinder 3 by a screw 5 rotated by a motor 6. The heating cylinder 3 is provided with a head portion 7, and a high-pressure gas is ejected from the gas ejection hole 71 provided at a center of the head portion 7. The molten resin sent to an end of the heating cylinder 3 is discharged from a resin discharge hole 73 having six superfine tubes provided in a downstream side of the resin ejection hole 73 through inside of the head portion 7. The molten resin discharged from the resin discharge hole 73 is elongated and a fiber having nanometer-order diameter can be formed.

Classes IPC  ?

• D01D 5/098 - Méthodes de filage à partir de masses en fusion avec étirage simultané
• D04H 3/16 - Non-tissés formés uniquement ou principalement de fils ou de matériaux filamenteux similaires de bonne longueur caractérisés par la méthode de renforcement ou de consolidation avec liages produits par soudage entre fils thermoplastiques ou filaments avec liages entre filaments thermoplastiques produits en relation avec la formation des filaments, p. ex. suivant immédiatement l'extrusion
• D01D 4/02 - Filières
• D01D 13/00 - Machines complètes pour la production de fils faits par l’homme

Abrégé

In this sound-absorbing material which comprises an aggregate of resin fibers, the average fiber diameter of the resin fibers is not less than 3000 nm but less than 8000 nm, and the porosity of the aggregate is 0.95-0.99. Alternatively, the average fiber diameter of the resin fibers is not less than 4450 nm but less than 7700 nm, and the porosity of the aggregate is 0.92-0.99. The flow resistivity of the aggregate is preferably at most 100,000 [Ns/m4]. The resin fibers included in the aggregate are preferably made of a thermoplastic resin. Preferably, the melting point of the thermoplastic resin is lower than 200°C. As the thermoplastic resin, a polyolefin, and particularly polypropylene may be used. As a result, provided is a sound-absorbing material that can attain a high sound absorption coefficient α over a wide frequency range. In particular, provided is a sound-absorbing material that exhibits excellent sound-absorbing performance by means of the aggregate of resin fibers such as polypropylene fibers, and that has high quality and high production efficiency.

Classes IPC  ?

• G10K 11/162 - Sélection de matériaux

Abrégé

This gas-permeable waterproof sheet is configured from an assembly of fine fibers which comprise a lipophilic material, have a fiber diameter in a prescribed range and are irregularly interwoven with one another. The center fiber diameter is preferably 1,000-3,000nm. The coefficient of variation in the fiber diameter quantity distribution is preferably 0.5-0.65. The bulk density of the assembly is preferably 0.01-0.10 g/cm3. At least part of the fiber assembly may be covered by a cover sheet through which a gas can pass. The cover sheet is preferably a nonwoven fabric or a mesh. As a result, the present invention provides an easily producible gas-permeable waterproof sheet which has a simple structure (in other words, a sheet-like member through which a gas such as air or water vapor passes, but through which water does not pass).

Classes IPC  ?

• D04H 3/03 - Non-tissés formés uniquement ou principalement de fils ou de matériaux filamenteux similaires de bonne longueur caractérisés par la méthode de formation des voiles ou couches, p. ex. par la réorientation des fils ou filaments au hasard
• A01G 9/14 - Serres
• A01G 13/02 - Couvertures protectrices pour les plantes; Dispositifs pour leur mise en place
• B32B 5/26 - Produits stratifiés caractérisés par l'hétérogénéité ou la structure physique d'une des couches caractérisés par la présence de plusieurs couches qui comportent des fibres, filaments, grains ou poudre, ou qui sont sous forme de mousse ou essentiellement poreuses une des couches étant fibreuse ou filamenteuse un autre couche également étant fibreuse ou filamenteuse
• B32B 27/12 - Produits stratifiés composés essentiellement de résine synthétique adjacente à une couche fibreuse ou filamenteuse
• D04H 1/4382 - Fibres obtenues par étirage de film réticuléFibres compositesFibres mixtesFibres ultrafinesFibres pour cuir artificiel

Abrégé

A production method and production apparatus are provided for nanofiber aggregates produced and stretched into a fine-diameter fibrous shape by spraying a high-temperature, high-pressure gas from gas discharge ports into a polymer solution discharged from a solution discharge port. The nanofiber aggregates are collected into fine-diameter fibers in a high-temperature, high-pressure gas wind force by discharging secondary high-pressure air from high-pressure air blowing discharge ports in an intersecting pattern into a nanofiber flow during production and stretching. Further provided, as an effect, are nanofiber aggregates: having the characteristic that the distribution of fiber diameters thicker than the central fiber diameter and the distribution of fiber diameters thinner than the central fiber diameter are equal or better; and having excellent oil absorption capacity and oil keeping capacity.

Classes IPC  ?

• D04H 3/16 - Non-tissés formés uniquement ou principalement de fils ou de matériaux filamenteux similaires de bonne longueur caractérisés par la méthode de renforcement ou de consolidation avec liages produits par soudage entre fils thermoplastiques ou filaments avec liages entre filaments thermoplastiques produits en relation avec la formation des filaments, p. ex. suivant immédiatement l'extrusion
• D01D 5/04 - Méthodes de filage à sec
• D04H 3/016 - Non-tissés formés uniquement ou principalement de fils ou de matériaux filamenteux similaires de bonne longueur caractérisés par leur finesse

Abrégé

A polishing nanofiber aggregate and a method for producing the same are provided that are capable of suppressing a decrease in polishing efficiency even using fine powder for precision polishing. A polishing nanofiber aggregate 1 is used by adsorbing a slurry prepared by mixing fine powder for precision polishing with a liquid. The polishing nanofiber aggregate 1 has an average fiber diameter d of 400 nm or more and 1000 nm or less and a porosity η of 0.70 or more and 0.95 or less. The polishing nanofiber aggregate 1 is capable of reducing an interfiber distance e1 while securing the porosity η. It is thus possible to suppress incorporation of abrasive particles having a small diameter between the fibers.

Classes IPC  ?

• B24D 11/00 - Caractéristiques de construction des matériaux abrasifs flexiblesCaractéristiques particulières de la fabrication de ces matériaux

Abrégé

[Problem] To provide a production method for nanofiber aggregates having high oil absorption capacity and oil retention capacity, a production apparatus for the nanofiber aggregates, and nanofiber aggregates having high oil absorption capacity.　[Solution] The present invention pertains to a production method and production apparatus for nanofiber aggregates produced and stretched into a fine-diameter fibrous shape by spraying a high-temperature, high-pressure gas from gas discharge ports into a polymer solution discharged from a solution discharge port. The nanofiber aggregates are collected into fine-diameter fibers in a high-temperature, high-pressure gas wind force by discharging secondary high-pressure air from high-pressure air blowing discharge ports in an intersecting pattern into a nanofiber flow during production and stretching. Further provided, as an effect, are nanofiber aggregates: having the characteristic that the distribution of fiber diameters thicker than the central fiber diameter and the distribution of fiber diameters thinner than the central fiber diameter are equal or better; and having excellent oil absorption capacity and oil retention capacity.　

Classes IPC  ?

• D04H 3/016 - Non-tissés formés uniquement ou principalement de fils ou de matériaux filamenteux similaires de bonne longueur caractérisés par leur finesse
• D04H 3/16 - Non-tissés formés uniquement ou principalement de fils ou de matériaux filamenteux similaires de bonne longueur caractérisés par la méthode de renforcement ou de consolidation avec liages produits par soudage entre fils thermoplastiques ou filaments avec liages entre filaments thermoplastiques produits en relation avec la formation des filaments, p. ex. suivant immédiatement l'extrusion
• D01D 5/04 - Méthodes de filage à sec
• D01D 5/08 - Méthodes de filage à partir de masses en fusion

Abrégé

[PROBLEM] To produce nanofiber sheets that are homogeneous over the entire surface of the sheets. Furthermore, to prevent a polymer solution that fails to become nanofibers in a fiber generation device from turning into droplets or small polymer masses that fly straight toward a nanofiber collection device, thereby avoiding directly hitting a nanofiber collecting surface of the nanofiber collection device. [SOLUTION] A nanofiber production apparatus provided with: a nanofiber generation device equipped with a liquid discharge nozzle for discharging a polymer solution in which a polymer has been dissolved in a solvent, and a hot air discharge nozzle for discharging a high-temperature, high-speed gas at high pressure; and a collection device for suctioning and collecting nanofibers generated by the nanofiber generation device. A flow path suppression means is provided between the nanofiber generation device and the nanofiber collection device, said flow path suppression means causing the nanofibers generated by the nanofiber generation device to float so that the flow of nanofibers generated by the nanofiber generation device do not directly fly straight into the nanofiber collection device.

Classes IPC  ?

• D01D 5/04 - Méthodes de filage à sec
• D04H 3/016 - Non-tissés formés uniquement ou principalement de fils ou de matériaux filamenteux similaires de bonne longueur caractérisés par leur finesse

Abrégé

Provided are: a polishing nanofiber aggregate capable of suppressing a reduction in polishing efficiency even when fine abrasive powder is used; and a method for producing the same. A polishing nanofiber aggregate (1) can be used by adsorbing thereon a slurry having fine abrasive powder mixed in a liquid. The polishing nanofiber aggregate (1) has an average fiber diameter (d) of 400-1000 nm, and a porosity (η) of 0.70-0.95. In the polishing nanofiber aggregate (1), the distance (e1) between fibers can be reduced without compromising porosity (η). As a result, it is possible to inhibit abrasive grains having a small particle size from entering the spaces between the fibers.

Classes IPC  ?

• B24D 11/00 - Caractéristiques de construction des matériaux abrasifs flexiblesCaractéristiques particulières de la fabrication de ces matériaux

Abrégé

Provided are a nanofiber collection device which enables mass production of nanofibers and a method therefor. The nanofiber collection device (1) is provided with: a horizontally disposed collection means rotation shaft (4) for rotatably supporting parallel collection rods (31) which collect nanofibers (F) at a collection position; a collection means-driving motor (6) for rotating the collection means rotation shaft (4); a control means (8) for stopping the collection means rotation shaft (4) rotated by the collection means-driving motor (6), after every 90° turn; and a scraping rod (12) for scraping the nanofibers (F) collected on the parallel collection rods (31) downward at a non-collection position.

Classes IPC  ?

• D01D 7/00 - Réception des produits nouvellement filés
• D01D 5/04 - Méthodes de filage à sec
• D01D 5/08 - Méthodes de filage à partir de masses en fusion
• D04H 1/736 - Non-tissés formés uniquement ou principalement de fibres coupées ou autres fibres similaires relativement courtes caractérisés par la méthode de formation des voiles ou couches, p. ex. par la réorientation des fibres les fibres étant disposées au hasard caractérisé par l'appareil pour arranger les fibres
• D04H 3/16 - Non-tissés formés uniquement ou principalement de fils ou de matériaux filamenteux similaires de bonne longueur caractérisés par la méthode de renforcement ou de consolidation avec liages produits par soudage entre fils thermoplastiques ou filaments avec liages entre filaments thermoplastiques produits en relation avec la formation des filaments, p. ex. suivant immédiatement l'extrusion

Abrégé

[Problem] To provide a fiber aggregate for sound insulation that is able to effectively insulate sound by a simple structure, a sound absorbing/insulating material and a sound absorbing/insulating material for a vehicle that comprise this fiber aggregate for sound insulation. [Solution] This fiber aggregate for sound insulation has a mean fiber diameter of 450-8500 nm and a bulk density of 0.09-0.33 g/cm3. It is particularly desirable that the fiber aggregate for sound insulation have a mean fiber diameter of 450-1650 nm and a bulk density of 0.09-0.22 g/cm3. The fiber aggregate for sound insulation is lightweight and can effectively provide sound insulation performance by satisfying these numeric ranges.

Classes IPC  ?

• G10K 11/162 - Sélection de matériaux
• B32B 5/26 - Produits stratifiés caractérisés par l'hétérogénéité ou la structure physique d'une des couches caractérisés par la présence de plusieurs couches qui comportent des fibres, filaments, grains ou poudre, ou qui sont sous forme de mousse ou essentiellement poreuses une des couches étant fibreuse ou filamenteuse un autre couche également étant fibreuse ou filamenteuse
• B60R 13/08 - Éléments d'isolation, p. ex. pour l'insonorisation
• G10K 11/168 - Sélection de matériaux de plusieurs couches de matériaux différents, p. ex. sandwiches

Abrégé

ｂｂ between 0.01 g/cm3and 0.2 g/cm3, inclusive. The nanofiber aggregate 1 for fat adsorption can effectively increase the adsorption rate while maintaining the rate of fat adsorption.

Classes IPC  ?

• B01J 20/28 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation caractérisées par leur forme ou leurs propriétés physiques
• B01J 20/26 - Composés macromoléculaires synthétiques
• D04H 1/72 - Non-tissés formés uniquement ou principalement de fibres coupées ou autres fibres similaires relativement courtes caractérisés par la méthode de formation des voiles ou couches, p. ex. par la réorientation des fibres les fibres étant disposées au hasard
• G01N 30/00 - Recherche ou analyse de matériaux par séparation en constituants utilisant l'adsorption, l'absorption ou des phénomènes similaires ou utilisant l'échange d'ions, p. ex. la chromatographie

Abrégé

The problem addressed by the present invention is to provide a discharge nozzle for a nano fiber manufacturing device and a nano fiber manufacturing device provided with the discharge nozzle wherein when manufacturing nano fiber, specifications such as the diameter of fiber being manufactured can easily be changed, thereby improving device versatility and workability. A discharge nozzle 2 attached to a nano fiber manufacturing device 1 has a divided type nozzle unit 6 formed of: a molten/dissolved resin discharge opening 9 that discharges molten/dissolved resin; a molten/dissolved resin flow path 10 for feeding molten resin to the molten/dissolved resin discharge opening 9; a hot air discharge opening 11 for discharging hot air; and a hot air flow path 12 for feeding hot air to the hot air discharge opening 11. The divided type nozzle unit 6 is of a constitution that can be divided into first through fourth nozzle units 6a – 6d.

Classes IPC  ?

• D01D 4/02 - Filières
• D01D 5/04 - Méthodes de filage à sec
• D01D 5/08 - Méthodes de filage à partir de masses en fusion

Abrégé

Provided are: a nanofiber manufacturing device which can be manufactured by a cutting process and effectively carry a molten resin on a gas flow; and a head used for the nanofiber manufacturing device. This head (20) for a nanofiber manufacturing device (1) has: a raw material outlet surface (22) in which a raw material flow passage (2) for discharging a liquid-phase raw material is formed; and a gas outlet surface (23) which is disposed so as to form an angle α (where 0<α≤90 degrees) with respect to the raw material outlet surface (22) and in which a gas flow passage (26) for discharging gas is formed. In addition, the raw material flow passage (25) is formed perpendicular to the raw material outlet surface (22), the gas flow passage (26) is formed perpendicular to the gas outlet surface (23), and the raw material flow passage (25) and the gas flow passage (26) are disposed so that gas jetted from the gas flow passage (26) is sprayed and attached to the liquid-phase raw material discharged from the raw material flow passage (25).

Classes IPC  ?

• D01D 5/08 - Méthodes de filage à partir de masses en fusion
• D01D 4/02 - Filières

Produits et services

Melt spinning machines; dry spinning machines; wet spinning machines and other spinning machines; machines for the textile industry, except sewing machines. Synthetic fiber for use as an automotive sound absorbing material; synthetic fiber for use as a material of sound-proofing or heat insulation for construction; synthetic fiber for use as a material of filter agent or air filtration; plastic fibers, not for use in textiles; cellulose fibers, not for use in textiles for insulating purposes; other chemical fibers, other than textile use; semi-processed plastic materials for adsorbing and removing oil; semi-processed cellulose materials for adsorbing and removing oil; fibers for keeping vegetables and fruits fresh for insulating purposes. Non-woven textile fabrics, coated with synthetic materials; and other non-woven textile fabrics.

Abrégé

[Problem] To provide a rice flour–based tempura flour composition that does not include wheat flour, and a food processing method using the composition. [Solution] This rice flour–based tempura flour composition is characterized by comprising 2 parts by weight of silicon, 0.8–1.5 parts by weight of baking powder, 1.1–2.5 parts by weight of a sugar ester, 15–19.2 parts by weight of starch, 70.5–76 parts by weight of rice flour, 3.5–6.3 parts by weight of calcium lactate, and 0.05 parts by weight of carotene. The present invention also provides a food processing method using the composition.

Classes IPC  ?

• A23L 7/157 - Granulés farineux pour apprêter la viande, le poisson ou les aliments similaires
• A23L 5/10 - Procédés généraux de cuisson des aliments, p. ex. par rôtissage ou friture
• C08K 3/08 - Métaux
• C08K 5/098 - Sels métalliques d'acides carboxyliques
• C08L 1/10 - Esters des acides organiques
• C08L 3/02 - AmidonSes produits de dégradation, p. ex. dextrine

Abrégé

[Problem] To provide a food product yield improving agent that does not contain phosphate salt, and a food product processing method using the food product yield improving agent. [Solution] This food product yield improving agent comprises a main component, a gelling agent and a bulking agent, the main component being 50-65 parts by weight of sodium bicarbonate and 8-15 parts by weight of potassium carbonate, the gelling agent being 3-6 parts by weight of glucomannan or konjac powder, and the bulking agent being 23-31 parts by weight of starch. Moreover, this food product processing method uses the food product yield improving agent and is characterized by a first step, in which a food product is mixed into an aqueous solution formed by dissolving the food product yield improving agent in water, followed by a second step, in which the aqueous solution in which the food product has been immersed is left to stand for 15-60 minutes, and a final step, in which the food product is cooked in oil.

Classes IPC  ?

• A23L 29/244 - Aliments ou produits alimentaires contenant des additifsLeur préparation ou leur traitement contenant des agents gélifiants ou épaississants d'origine végétale à partir de bulbes, de tubercules ou de racines, p. ex. glucomannane
• A23L 3/37 - Congélation; Dégel ultérieur; Refroidissement avec addition de produits chimiques
• A23L 13/00 - Produits à base de viandeFarine de viandeLeur préparation et leur traitement
• A23L 17/00 - Produits tirés de la merProduits à base de poissonFarine de poissonSuccédanés d’œufs de poissonLeur préparation ou leur traitement
• A23L 29/212 - AmidonAmidon modifiéDérivés d'amidon, p. ex. esters ou éthers

Abrégé

[Problem] To provide a water-soluble composition or aqueous solution with which it is possible to effectively prevent discoloration and browning even if the subject of discoloration and browning prevention changes. [Solution] A carbon-dioxide-foamable alkali composition or aqueous solution that achieves a reduction state in carbon dioxide in the alkaline region, and traps pigment by the chelate effect so as to oxidize polyphenols and myoglobin over a long period, said water-soluble composition having, as active ingredients, (1) an organic acid such as acetic acid, ascorbic acid, citric acid and tartaric acid, or an alkali metal or alkaline earth metal salt thereof, (2) an alkali metal or an alkaline earth carbonate, and (3) an alum, and said water-soluble composition characterized in that the alkali metal or the alkaline earth carbonate is dissolved in an aqueous solution of the organic acid or salt thereof, and carbon dioxide is foamed in the weakly alkaline (approximately pH 8) region.

Classes IPC  ?

• A23B 7/154 - Composés organiquesMicro-organismesEnzymes
• A23B 4/20 - Composés organiquesMicro-organismesEnzymes

Abrégé

[Problem] To provide an oil-adsorbent mat which has a high oil adsorption capacity and is handy. [Solution] The oil-adsorbent mat of the present invention is for use especially in an oil adsorption device for adsorptively removing oils and fats from contaminated water discharged from kitchens. The oil-adsorbent mat is characterized by comprising a mass of fine fibers having a diameter of 100 nm to 20 µm and piled up so as to have a given shape, the mass having a weight per unit volume (10 mm×10 mm×10 mm) of 0.015-0.030 g, the given shape being one in which the thickness c of the central part where the fine fibers are in a piled state is 10-50 mm. The oil-adsorbent mat may be further characterized in that the given shape is defined by the upper, lower, right-hand, and left-hand edges which have been solidified.

Classes IPC  ?

• C02F 1/28 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par absorption ou adsorption
• B01J 20/26 - Composés macromoléculaires synthétiques
• B01J 20/28 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation caractérisées par leur forme ou leurs propriétés physiques
• B01J 20/30 - Procédés de préparation, de régénération ou de réactivation
• C02F 1/40 - Dispositifs pour séparer ou enlever les substances grasses ou huileuses, ou les matières flottantes similaires

Produits et services

Chemicals for use as food additives; antioxidants; artificial sweeteners; flour and starch for industrial purposes; unprocessed plastics [plastics in primary form]; absorbents. Metalworking machines and parts thereof and attachments; chemical processing machines and parts thereof and attachments; textile machines and parts thereof and attachments; machines and parts thereof and attachments for use in food processing and beverage processing; plastic processing machines and parts thereof and attachments. Medical apparatus and instruments; electrocardiographs, plethysmographs, pulse meters, sphygmomanometers and other diagnostic apparatus. Chemical fiber, other than for textile use; chemical fiber thread, other than for textile use; plastic semi-worked products; soundproofing materials; absorbing mats used for absorbing and removing grease discharged from kitchens and factories, and grease flowed into roads, rivers and oceans. Chemical fiber fabrics; knitted fabrics; felts and non-woven textile fabrics; quilt covers for futon; pillowcases. Test, examination or research for foods and food additives; test or research on machines, apparatus and instruments; designing of medical apparatus and instruments; designing of machines, apparatus, instruments [including their parts] or systems composed of such machines, apparatus and instruments; design, creation or maintenance of computer programs; technological advice relating to computers, automobiles and industrial machines.

Abrégé

[Problem] To provide a nanofiber production device and nanofiber production method using a melt-blowing process with improved productivity. [Solution] A pellet-form raw material (resin) which has been loaded into a hopper 2 is fed to the inside of a heating cylinder 3 heated by a heater 4, and melted, and fed to the front of the heated cylinder 3 by means of a screw 5 that is rotated by a motor 6. A head part 7 is provided to the heating cylinder, and high-pressure gas is blown out from a gas jetting port 71 which is formed in the center of the head part 7. Molten resin that has reached the tip of the heated cylinder 3 is passed through the interior of the head part 7 and is discharged from six extremely thin resin discharge ports 73 that are positioned in a recessed position from the resin discharge port 73 in the downstream direction. As a result of this configuration, molten resin discharged from the resin discharge ports 73 is stretched, forming fibers having a nano-order diameter.

Classes IPC  ?

• D01D 5/08 - Méthodes de filage à partir de masses en fusion
• D04H 3/16 - Non-tissés formés uniquement ou principalement de fils ou de matériaux filamenteux similaires de bonne longueur caractérisés par la méthode de renforcement ou de consolidation avec liages produits par soudage entre fils thermoplastiques ou filaments avec liages entre filaments thermoplastiques produits en relation avec la formation des filaments, p. ex. suivant immédiatement l'extrusion