Patents Assigned to Daiwabo Holdings Co., Ltd.
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Publication number: 20200155374Abstract: Provided is a sheet for an absorbent article including a nonwoven fabric containing cellulose-based fibers in an amount of more than 90% by mass, the nonwoven fabric being formed by entangling fibers, wherein the nonwoven fabric includes a plurality of first entanglement portions spaced apart from each other and a plurality of second entanglement portions spaced apart from each other, each of the first entanglement portions has a regular pattern formed by a plurality of regions having a high fiber density (hereinafter referred to as “high-density regions”) and a plurality of regions having a low fiber density (hereinafter referred to as “low-density regions”).Type: ApplicationFiled: June 28, 2018Publication date: May 21, 2020Applicants: DAIWABO HOLDINGS CO., LTD., DAIWABO POLYTEC CO., LTD.Inventor: Hiroko MAKIHARA
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Patent number: 9903053Abstract: The present invention provides cured article reinforcing fibers having a shape advantageous in physically bonding the fibers to a hardening material or bringing the fibers into engagement with the hardening material, and also provides a cured article using the fibers. The cured article reinforcing fiber of the present invention has a multilobal cross section with three or more projections. At least one of the projections has a substantially curved end part, and a base part situated toward the center of the fiber has a width smaller than the largest width of the end part. Thus, the fiber particularly has high bending strength. Further, the cured article of the present invention includes a mixture of the cured article reinforcing fiber and a hardening material, and the hardening material has been cured.Type: GrantFiled: March 30, 2012Date of Patent: February 27, 2018Assignees: DAIWABO HOLDINGS CO., LTD., DAIWABO POLYTEC CO., LTD.Inventor: Shigeki Kawakami
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Patent number: 9356272Abstract: A polyolefin-based split-type conjugate fiber according to the present invention is a polyolefin-based split-type conjugate fiber obtained by composite spinning including a first component containing a polypropylene-based resin and a second component containing a polyolefin-based resin, wherein the first component contains, as a primary component, a polypropylene resin having a Q value (the ratio between the weight average molecular weight Mw and the number average molecular weight Mn) of 6 or greater and a melt flow rate according to JIS K 7210 (MFR at a measurement temperature of 230° C. under a load of 2.16 kgf (21.18 N)) of 5 g/10 min or greater and less than 23 g/10 min, and the first component and the second component are adjacent to each other in a cross section of the polyolefin-based split-type conjugate fiber.Type: GrantFiled: March 30, 2011Date of Patent: May 31, 2016Assignees: Daiwabo Holdings Co., Ltd., Daiwabo Polytec Co., Ltd.Inventor: Tatsunori Kida
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Patent number: 9249052Abstract: A cement reinforcing fiber of the present invention is a cement reinforcing fiber made of a polyolefin fiber, wherein a fiber treating agent is adhered to a surface of the polyolefin fiber, and the fiber treating agent is a polyoxyethylene alkyl phosphoric ester salt. One preferred polyoxyethylene alkyl phosphoric ester salt is a compound represented by chemical formula (2) below. A cured cement of the present invention contains the above-described cement reinforcing fiber. In the chemical formula (2) above, R is an alkyl group with a carbon number of 2 to 20, A is an alkali metal element, and n is 1 to 20.Type: GrantFiled: February 25, 2013Date of Patent: February 2, 2016Assignees: DAIWABO HOLDINGS CO., LTD., DAIWABO POLYTEC CO., LTD.Inventor: Shigeki Kawakami
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Patent number: 8968859Abstract: A heat extensible fiber comprises a conjugate fiber including a first resin component having an orientation index of 30% to 70% and a second resin component having a lower melting point or softening point than the melting point of the first resin component and an orientation index of 40% or more, the second resin component being present on at least part of the surface of the conjugate fiber in a lengthwise continuous configuration. The conjugate fiber is a heat-treated or crimped fiber and being configured to thermally extend when heated at a temperature lower than the melting point of the first resin component. The heat extensible fiber has higher heat self-extensibility than conventional extensible fibers.Type: GrantFiled: December 1, 2006Date of Patent: March 3, 2015Assignees: Kao Corporation, Daiwabo Holdings Co., Ltd., Daiwabo Polytec Co., Ltd.Inventors: Manabu Matsui, Yoshiji Usui, Shigeki Kawakami
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Patent number: 8911753Abstract: A skin-covering sheet for impregnation with a cosmetic preparation according to the present invention includes a non-woven fabric in which a splittable conjugate fiber containing at least two components as viewed in fiber cross-section, namely a polyethylene component and another polymer component, and a hydrophilic fiber are blended, and hydroentangled. The conjugate fiber is partially split and includes a polyethylene ultrafine fiber having a fineness of 0.6 dtex or less. A face mask according to the present invention includes the skin-covering sheet for impregnation with a cosmetic preparation impregnated with 500 to 2000 mass % of a liquid containing a cosmetic preparation. It is therefore possible to obtain a skin-covering sheet for impregnation with a cosmetic preparation and a face mask that have good impregnating ability of a cosmetic liquid into the sheet layer, cause very little irritation to the skin, and are soft in texture.Type: GrantFiled: June 2, 2009Date of Patent: December 16, 2014Assignees: Daiwabo Holdings Co., Ltd., Daiwabo Polytec Co., Ltd.Inventor: Akihiko Kawanaka
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Patent number: 8889573Abstract: The present invention relates to a fiber assembly obtained by electrifying a resin in a melted state by application of voltage between a supply-side electrode and a collection-side electrode so as to extend the resin into an ultrafine composite fiber by electrospinning, and accumulating the ultrafine composite fiber, wherein the ultrafine composite fiber includes at least two polymeric components and the ultrafine composite fiber includes at least one type of composite fiber selected from a sea-island structure composite fiber and a core-sheath structure composite fiber as viewed in fiber cross section, at least one selected from an island component and a core component has a volume specific resistance of 1015?·cm or less, and at least one selected from a sea component and a sheath component has a volume specific resistance exceeding 1015?·cm.Type: GrantFiled: September 4, 2009Date of Patent: November 18, 2014Assignees: Daiwabo Holdings Co., Ltd., Daiwabo Polytec Co., Ltd.Inventor: Toshio Kamisasa
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Publication number: 20140011030Abstract: The present invention provides cured article reinforcing fibers having a shape advantageous in physically bonding the fibers to a hardening material or bringing the fibers into engagement with the hardening material, and also provides a cured article using the fibers. The cured article reinforcing fiber of the present invention has a multilobal cross section with three or more projections. At least one of the projections has a substantially curved end part, and a base part situated toward the center of the fiber has a width smaller than the largest width of the end part. Thus, the fiber particularly has high bending strength. Further, the cured article of the present invention includes a mixture of the cured article reinforcing fiber and a hardening material, and the hardening material has been cured.Type: ApplicationFiled: March 30, 2012Publication date: January 9, 2014Applicants: DAIWABO POLYTEC CO., LTD., DAIWABO HOLDINGS CO., LTD.Inventor: Shigeki Kawakami
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Publication number: 20130178508Abstract: A highly moisturizing cosmetic composition having firmness/elasticity-improving effect, wrinkle-improving effect, and texture-improving effect can be provided by blending a metal phthalocyanine derivative or salt thereof in a cosmetic material. For the metal phthalocyanine derivative, iron phthalocyanine tetracarboxylic acid is particularly favorable.Type: ApplicationFiled: September 29, 2011Publication date: July 11, 2013Applicants: DAIWABO HOLDINGS CO., LTD., DAIWABO NEU CO., LTD., I'FORET CO., LTD.Inventors: Hirofusa Shirai, Tomiko Iwama, Hisanaga Tsuiki
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Publication number: 20130017451Abstract: A polyolefin-based split-type conjugate fiber according to the present invention is a polyolefin-based split-type conjugate fiber obtained by composite spinning including a first component containing a polypropylene-based resin and a second component containing a polyolefin-based resin, wherein the first component contains, as a primary component, a polypropylene resin having a Q value (the ratio between the weight average molecular weight Mw and the number average molecular weight Mn) of 6 or greater and a melt flow rate according to JIS K 7210 (MFR at a measurement temperature of 230° C. under a load of 2.16 kgf (21.18 N)) of 5 g/10 min or greater and less than 23 g/10 min, and the first component and the second component are adjacent to each other in a cross section of the polyolefin-based split-type conjugate fiber.Type: ApplicationFiled: March 30, 2011Publication date: January 17, 2013Applicants: DAIWABO POLYTEC CO., LTD., DAIWABO HOLDINGS CO., LTD.Inventor: Tatsunori Kida
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Patent number: 8268444Abstract: The present invention is directed to a crimping conjugate fiber, comprising a first component and a second component, wherein the first component comprises a polybutene-1; the second component comprises a polymer having a melting point higher than that of the polybutene-1 by at least 20° C., or a polymer having a melting initiation temperature (extrapolated melting initiation temperature measured using differential scanning calorimetry (DSC) as defined in JIS-K-7121) of at least 120° C.; in a cross section of the fiber, the first component occupies at least 20% of the surface of the conjugate fiber, and the centroid position of the second component is shifted from the centroid position of the conjugate fiber; and the conjugate fiber is an actualized crimping conjugate fiber in which three-dimensional crimps have been developed or a latently crimpable conjugate fiber in which three-dimensional crimps are developed by heating.Type: GrantFiled: March 30, 2007Date of Patent: September 18, 2012Assignees: Daiwabo Holdings Co., Ltd., Daiwabo Polytec Co., Ltd.Inventor: Hiroshi Okaya
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Publication number: 20120121882Abstract: A crimped conjugate fiber of the present invention is a conjugate fiber containing a first component and a second component, the first component containing polybutene-1 and linear low density polyethylene, the linear low density polyethylene content being 2 to 25 mass %, the second component 2 containing a polymer having a melting peak temperature at least 20° C. higher than the melting peak temperature of polybutene-1 or a polymer having a melting initiation temperature of 120° C. or higher, when viewed from a fiber cross-section, the first component occupies at least 20% of the surface of the conjugate fiber 10 and the centroid position of the second component not overlapping the centroid position of the conjugate fiber, the conjugate fiber is an actualized crimping conjugate fiber in which three-dimensional crimps have been developed or a latently crimpable conjugate fiber in which three-dimensional crimps are developed by heating.Type: ApplicationFiled: July 16, 2010Publication date: May 17, 2012Applicants: DAIWABO POLYTEC CO., LTD., DAIWABO HOLDINGS CO., LTD.Inventor: Hiroshi Okaya
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Publication number: 20120015185Abstract: A flameproof rayon fiber having excellent flameproofness as well as excellent flame retardance, a method for manufacturing the same, and a flameproof fiber structure are provided. The flameproof rayon fiber according to the present invention includes components of silicon and sodium. Glass remains when the fiber is burned at 800° C., the glass component has a property of softening at 800° C., and when subjected to an X-ray fluorescence analysis, the rayon fiber has a silicon content in the range of 5 to 30% by mass and a sodium content in the range of 0.1 to 3% by mass.Type: ApplicationFiled: December 28, 2009Publication date: January 19, 2012Applicants: DAIWABO RAYON CO., LTD., DAIWABO HOLDINGS CO., LTD.Inventors: Shigeo Fushitani, Makoto Hayashi
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Publication number: 20110177395Abstract: The present invention relates to a fiber assembly obtained by electrifying a resin in a melted state by application of voltage between a supply-side electrode and a collection-side electrode so as to extend the resin into an ultrafine composite fiber by electrospinning, and accumulating the ultrafine composite fiber, wherein the ultrafine composite fiber includes at least two polymeric components and the ultrafine composite fiber includes at least one type of composite fiber selected from a sea-island structure composite fiber and a core-sheath structure composite fiber as viewed in fiber cross section, at least one selected from an island component and a core component has a volume specific resistance of 1015?·cm or less, and at least one selected from a sea component and a sheath component has a volume specific resistance exceeding 1015?·cm.Type: ApplicationFiled: September 4, 2009Publication date: July 21, 2011Applicants: DAIWABO HOLDINGS CO., LTD., DAIWABO POLYTEC CO., LTD.Inventor: Toshio Kamisasa
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Publication number: 20110081391Abstract: A skin-covering sheet for impregnation with a cosmetic preparation according to the present invention includes a non-woven fabric in which a splittable conjugate fiber containing at least two components as viewed in fiber cross-section, namely a polyethylene component and another polymer component, and a hydrophilic fiber are blended, and hydroentangled. The conjugate fiber is partially split and includes a polyethylene ultrafine fiber having a fineness of 0.6 dtex or less. A face mask according to the present invention includes the skin-covering sheet for impregnation with a cosmetic preparation impregnated with 500 to 2000 mass % of a liquid containing a cosmetic preparation. It is therefore possible to obtain a skin-covering sheet for impregnation with a cosmetic preparation and a face mask that have good impregnating ability of a cosmetic liquid into the sheet layer, cause very little irritation to the skin, and are soft in texture.Type: ApplicationFiled: June 2, 2009Publication date: April 7, 2011Applicants: DAIWABO HOLDINGS CO., LTD., DAIWABO POLYTEC CO., LTD.Inventor: Akihiko Kawanaka
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Publication number: 20100297443Abstract: An ultrafine composite fiber of the present invention is obtained by heating and melting a composite-resin-formed product in front of a supply-side electrode and/or in a space between electrodes and extending the composite-resin-formed product by electrospinning, wherein the composite-resin-formed product is a solid-state composite-resin-formed product having two or more phases and including a resin that has a volume specific resistance of 1015 ?·cm or less, and that is exposed on 30% or more of a surface of the composite-resin-formed product. With this, an ultrafine composite synthetic fiber and an ultrafine synthetic fiber can be obtained by electrospinning, without a solvent being mixed in a supply resin, and further, a method for manufacturing an ultrafine composite fiber, as well as a fiber structure containing an ultrafine composite fiber, are provided.Type: ApplicationFiled: November 28, 2009Publication date: November 25, 2010Applicants: DAIWABO HOLDINGS CO., LTD., DAIWABO POLYTEC CO., LTD.Inventors: Toshio Kamisasa, Nobuo Ogata
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Publication number: 20100272668Abstract: The present invention is to provide an antiviral substance effective for inactivating viruses, a fiber product carrying the antiviral substance, and a fiber structure. The antiviral substance comprises a polymer containing a maleic acid component as a monomer unit in its polymer chain, and is effective against an avian influenza virus. An antiviral fiber can be produced by mixing the copolymer with cellulose and spinning the resulting mixture.Type: ApplicationFiled: February 20, 2009Publication date: October 28, 2010Applicant: Daiwabo Holdings Co., Ltd.Inventors: Miki Matsushita, Koichi Otsuki, Hiroki Takakuwa, Ryota Tsunekuni
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Publication number: 20100221307Abstract: Provided are antiviral agents that are effective in inactivating viruses, and fiber products and fiber structures carrying these antiviral agents. The antiviral agent effectives against influenza and comprises a metal phthalocyanine derivative represented by formula I. Fiber carries these antiviral agents.Type: ApplicationFiled: February 20, 2009Publication date: September 2, 2010Applicant: DAIWABO HOLDINGS CO., LTD.Inventors: Miki Matsushita, Koichi Otsuki, Hiroki Takakuwa, Ryota Tsunekuni
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Patent number: 7709089Abstract: A rayon fiber that does not use a halide-based flame retardant, a phosphorous flame retardant or an organic solvent, has excellent flameproofness and launderability and is biodegradable when buried in the soil at the time of disposal, and a method for manufacturing the same are provided. The flameproof rayon fiber according to the present invention contains components of silicon and magnesium, and a compound containing the components of silicon and magnesium is amorphous.Type: GrantFiled: August 22, 2006Date of Patent: May 4, 2010Assignees: Daiwabo Holdings Co., Ltd., Daiwabo Rayon Co., Ltd.Inventors: Shigeo Fushitani, Masaru Nakano
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Patent number: 7670677Abstract: A latently crimpable conjugate fiber is constructed using a first component containing an ethylene-?-olefin copolymer polymerized with a metallocene catalyst and a second component formed from a thermal plastic polymer having a melting point T2 higher than a melting point T1 of the first component, such that the first component is exposed with an exposed length of at least 20% relative to a peripheral length of the fiber, and which fiber has a single fiber dry heat shrinkage percentage of at least 50%, which is determined according to JIS-L-1015 (dry heat shrinkage percentage) at 100° C. under an initial tension of 0.018mn/dtex (2mg/d) for 15 minutes and a single fiber dry heat shrinkage percentage of at least 15%, which is determined under the same condition under an initial tension of 0.450mN/dtex (50mg/dtex) for 15 minutes. The latently crimpable conjugate fiber develops crimps and has thermal adhesiveness at a low temperature.Type: GrantFiled: August 26, 2004Date of Patent: March 2, 2010Assignee: Daiwabo Holdings Co., Ltd.Inventors: Yoshiji Usui, Shigeki Kawakami