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公开(公告)号：US20190308230A1
公开(公告)日：2019-10-10
申请号：US16463369
申请日：2017-09-15
Applicant: UNICHARM CORPORATION
Inventor： Takayoshi KONISHI , Koichi YAMAKI , Ryusei ITO , Naoyuki FUNAMIZU , Kizuku TSUBOUCHI
Abstract: A method of recovering urine-derived nutrient salts from a used absorbent article containing urine, includes: immersing the used absorbent article in an aqueous solution containing a calcium compound to deactivate a superabsorbent polymer; using a sieve to separate a solid-liquid mixture yielded by the deactivation into a first fraction containing the constituent materials of the absorbent article, and a second fraction containing an aqueous solution containing the calcium compound and nutrient salts, and nutrient-salt-containing sediment that has passed through the sieve; producing nutrient-salt-containing sediment using a HAP method; and adjusting the pH of the aqueous solution in contact with the nutrient-salt-containing sediment to within a range of 5.6-7.0, dissolving at least some of a calcium compound other than hydroxyapatite in the sediment, and increasing the hydroxyapatite content of the sediment.
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公开(公告)号：US20190271018A1
公开(公告)日：2019-09-05
申请号：US16320247
申请日：2017-06-12
Applicant: UNICHARM CORPORATION
Inventor： Takayoshi KONISHI , Toshio HIRAOKA , Koichi YAMAKI , Noritomo KAMEDA
Abstract: A simple method is provided for producing a saccharified solution from a used absorbent article such as a used diaper. In order to produce a saccharified solution from a used absorbent article comprising a non-cellulosic liquid permeable surface material and an absorbent body that contains pulp fibers, the used absorbent article is immersed, without first being decomposed, in a saccharifying enzyme solution containing cellulase. The pulp fibers in the used absorbent article are saccharified by the cellulase, producing a saccharified solution. The produced saccharified solution is exuded out of the used absorbent article through the liquid permeable surface material, so it is possible to easily separate and recover the saccharified solution from the used absorbent article while maintaining the outer shape.
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Patent Agency Ranking
公开(公告)号：US20190186074A1
公开(公告)日：2019-06-20
申请号：US16322109
申请日：2017-06-09
Applicant: UNICHARM CORPORATION
Inventor： Takayoshi KONISHI , Toshio HIRAOKA , Koichi YAMAKI , Noritomo KAMEDA
CPC classification number: D21C5/022 , A61L2/18 , A61L2/183 , A61L11/00 , B09B3/00 , B09B5/00 , B29B17/00 , B29B17/02 , B29B2017/0224 , B29L2031/4878 , C08J11/26 , D21B1/10 , D21C5/02 , Y02W30/62 , Y02W30/622 , Y02W30/648 , Y02W30/706
Abstract: A method is provided for recovering pulp fibers having little damage from a used absorbent article which includes a water permeable front sheet, a water impermeable back sheet and an absorbent body that contains pulp fibers and a superabsorbent polymer. At least one opening with a circle equivalent diameter of 5-45 mm, or 10-45 mm cut, is made in the front sheet and/or the back sheet of the used absorbent article, which is then agitated in an organic acid aqueous solution with a pH of less than or equal to 2.5, and the superabsorbent polymer is deactivated and the pulp fibers and superabsorbent polymer are discharged from the used absorbent article through the opening or cut.
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公开(公告)号：US20190169795A1
公开(公告)日：2019-06-06
申请号：US16321829
申请日：2017-06-09
Applicant: UNICHARM CORPORATION
Inventor： Takayoshi KONISHI , Toshio HIRAOKA , Koichi YAMAKI , Noritomo KAMEDA
Abstract: A method is provided for recovering pulp fibers having little damage from a used absorbent article that contains pulp fibers and a superabsorbent polymer. The used absorbent article is treated at a temperature of greater than or equal to 80° C. with an organic acid aqueous solution having a pH no greater than 2.5, and the superabsorbent polymer is deactivated. Preferably, the pulp fibers and the deactivated superabsorbent polymer are separated from the used absorbent article after treatment with the organic acid aqueous solution, and further, a mixture including the separated pulp fibers and deactivated superabsorbent polymer is treated with an oxidizing agent, the deactivated superabsorbent polymer is decomposed, reduced in molecular weight and solubilized.
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公开(公告)号：US20190338463A1
公开(公告)日：2019-11-07
申请号：US16322111
申请日：2017-06-09
Applicant: UNICHARM CORPORATION
Inventor： Takayoshi KONISHI , Toshio HIRAOKA , Koichi YAMAKI , Noritomo KAMEDA
Abstract: A method is provided which, by a simple process, separates and recovers pulp fibers from a used absorbent article that contains pulp fibers and a superabsorbent polymer. A used absorbent article is treated with an aqueous solution that contains greater than or equal to 0.05 mass % of at least one kind of terpene selected from the group comprising terpene hydrocarbons, terpene aldehydes, and terpene ketones and that contains a deactivating agent that can deactivate the superabsorbent polymer; the superabsorbent polymer is deactivated, the adhesive that bonds together the constituent materials of the absorbent article is dissolved with the terpene to decompose the absorbent article, the pulp fibers are discharged to outside of the absorbent article, and the pulp fibers are separated from the absorbent article and recovered.
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公开(公告)号：US20170143557A1
公开(公告)日：2017-05-25
申请号：US15300274
申请日：2015-02-13
Applicant: Unicharm Corporation
Inventor： Koichi YAMAKI , Akie KINOSHITA
IPC: A61F13/26
CPC classification number: A61F13/266 , A61F13/26
Abstract: The present invention provides an applicator improved so that the entirety of the tampon may be reliably inserted into vagina.A raised portion is located on an exterior surface of an inner tube in the vicinity of a rear end thereof and put in a slidable contact with a part of an interior surface of an outer tube. The raised portion has an outer shape having a width dimension gradually increasing rearward from an apex located on a front end.
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公开(公告)号：US20140188064A1
公开(公告)日：2014-07-03
申请号：US14140281
申请日：2013-12-24
Applicant: Unicharm Corporation
Inventor： Koichi YAMAKI
IPC: A61F13/20
CPC classification number: A61F13/206 , A61F13/2022 , A61F13/2071 , A61F13/2094 , A61F13/34
Abstract: A catamenial tampon including a tampon body formed of a sponge adapted to be smoothly drawn out from the vaginal cavity. A catamenial tampon includes a tampon body and a withdrawal string. The tampon body is composed of an absorbent material formed of a liquid-absorptive sponge and a wrapping material formed of a liquid-permeable sheet material and adapted to wrap the absorbent material. The withdrawal string is attached to the wrapping material so as to extend in a direction in which the tampon body is drawn out.
Abstract translation: 一种月经棉塞，其包括由适于从阴道腔平滑地拉出的海绵形成的棉塞体。 月经棉塞包括棉塞体和抽出绳。 卫生栓体由吸液性海绵和由透液性片材形成并适于包覆吸收材料的包装材料形成的吸收材料构成。 抽出绳附接到包裹材料上，以沿着将棉塞主体拉出的方向延伸。
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