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1.发明公开公开(公告)号：US20240337068A1
公开(公告)日：2024-10-10
申请号：US18627471
申请日：2024-04-05
申请人： ICHIKAWA CO., LTD.
发明人： Yasuyuki OGIWARA
CPC分类号： D21F7/10 , D03D1/0094 , D03D11/00 , D03D13/008 , D03D15/283 , D03D15/30 , D03D15/47 , D10B2331/02 , D10B2401/063 , D10B2505/00
摘要： A base fabric forms a warp-weft double woven structure. In the base fabric, the base fabric is made of an MD yarn in a MD direction and a CD yarn in a CD direction, and the base fabric includes a weave repeat. In the weave repeat, the CD yarn includes an upper CD yarn and a lower CD yarn, the MD yarn is woven into both of the upper CD yarn and the lower CD yarn, the MD yarn includes at least one combination of a first MD yarn and a second MD yarn adjacent to the first MD yarn in the CD direction, the weave repeat includes first to fourth structural units, and the weave repeat includes a location at which the first and the second structural units are formed in pairs on both surfaces of the base fabric.
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公开(公告)号：US12012696B2
公开(公告)日：2024-06-18
申请号：US17815446
申请日：2022-07-27
申请人： ICHIKAWA CO., LTD.
发明人： Yuya Takamori , Manami Morinaga
CPC分类号： D21F3/0236 , C08G18/10 , C08G18/3221 , D21F7/083
摘要： Provided are a papermaking device having an excellent strength in which the unevenness in strength between its parts is suppressed, and a method for producing the papermaking device.
Also provided is a papermaking device for use in papermaking machine, the papermaking device comprising at least one resin layer comprising a polyurethane resin, wherein the polyurethane resin comprises as a component a polyether polycarbonate diol comprising one or more unit(s) A expressed by the following formula (1).-
公开(公告)号：US11987933B2
公开(公告)日：2024-05-21
申请号：US17815431
申请日：2022-07-27
申请人： ICHIKAWA CO., LTD.
发明人： Yuya Takamori , Manami Morinaga
CPC分类号： D21F3/0236 , C08G18/3221 , D21F7/083 , C08G18/10
摘要： A papermaking device may have excellent strength and suppressed unevenness in strength between its parts. Such a papermaking device may be used in papermaking machine and may include at least one resin layer comprising polyurethane resin. The polyurethane resin may be obtained by reacting a urethane prepolymer having an isocyanate group with a curing agent having an active hydrogen group. The urethane prepolymer may be obtained by reacting a polyisocyanate compound including 2,4-tolylene-diisocyanate and/or 2,6-tolylene-diisocyanate with a polyol compound including one or more polyether polycarbonate diol(s).
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公开(公告)号：US11603628B2
公开(公告)日：2023-03-14
申请号：US17178389
申请日：2021-02-18
申请人： Ichikawa Co., Ltd.
发明人： Yuya Takamori , Manami Morinaga
摘要： A shoe press belt for use in a papermaking machine including at least one resin layer, where the resin layer contains a polyurethane resin formed by curing an urethane prepolymer having an isocyanate group with a curing agent having an active hydrogen group, where the urethane prepolymer is obtained by reacting a polyisocyanate compound containing 4,4′-methylene bis(phenylisocyanate) with a polyol compound containing polytetramethylene ether glycol, and the curing agent contains polycarbonate diol(s).
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公开(公告)号：US20230051917A1
公开(公告)日：2023-02-16
申请号：US17815431
申请日：2022-07-27
申请人： ICHIKAWA CO., LTD.
发明人： Yuya TAKAMORI , Manami MORINAGA
摘要： Provided are a papermaking device having an excellent strength in which the unevenness in strength between its parts is suppressed, and a method for producing the papermaking device.
Also provided is a papermaking device for use in papermaking machine comprising at least one resin layer comprising polyurethane resin, wherein the polyurethane resin is obtainable by reacting a urethane prepolymer having an isocyanate group with a curing agent having an active hydrogen group, wherein the urethane prepolymer is obtainable by reacting a polyisocyanate compound comprising 2,4-tolylene-diisocyanate and/or 2,6-tolylene-diisocyanate with a polyol compound comprising one or more polyether polycarbonate diol(s).-
公开(公告)号：US20230051332A1
公开(公告)日：2023-02-16
申请号：US17815446
申请日：2022-07-27
申请人： ICHIKAWA CO., LTD.
发明人： Yuya TAKAMORI , Manami MORINAGA
摘要： Provided are a papermaking device having an excellent strength in which the unevenness in strength between its parts is suppressed, and a method for producing the papermaking device.
Also provided is a papermaking device for use in papermaking machine, the papermaking device comprising at least one resin layer comprising a polyurethane resin, wherein the polyurethane resin comprises as a component a polyether polycarbonate diol comprising one or more unit(s) A expressed by the following formula (1).-
公开(公告)号：US20220064857A1
公开(公告)日：2022-03-03
申请号：US17445615
申请日：2021-08-23
申请人： Ichikawa Co., Ltd.
发明人： Yasuyuki OGIWARA , Yuto MURAOKA
IPC分类号： D21F7/08
摘要： The object of the present invention is to provide a papermaking felt having good productivity and a laminated structure using 2 or more plain weave base fabrics that can be bonded to each other, wherein the joint portions do not open when a batt fiber layer is attached or when the felt is used, and to provide a method for producing the same.
This is achieved by a papermaking felt made from an MD yarn material in the felt running direction (MD direction) and a CD yarn material in the felt cross-direction (CD direction), comprising a combination in which 2 or more base fabrics are directly overlapped with each other, which have a joint portion in which the MD direction end portions are joined which comprise a 1st MD direction end portion and a 2nd MD direction end portion wherein, with regard to the base fabrics having all included joint portions, the equations (1) and (2) hereinafter are satisfied when the maximum distance in the MD direction between the joint portions of the base fabrics is x (cm) and the minimum distance thereof is y (cm). x≤750 (1) 10≤y (2)-
公开(公告)号：US20210269977A1
公开(公告)日：2021-09-02
申请号：US17178322
申请日：2021-02-18
申请人： Ichikawa Co., Ltd.
发明人： Yuya TAKAMORI , Manami MORINAGA
IPC分类号： D21F3/02 , C08G18/44 , C08G64/30 , C08K5/00 , C08K5/053 , C08K5/17 , D21F3/08 , C08G18/10 , C08G18/48
摘要： The object of the invention is to provide a shoe press belt which has an excellent strength while the variation in strength among its parts being suppressed, and to provide a method for producing such a shoe press belt.
Provided is a shoe press belt for use in a papermaking machine comprising at least one resin layer comprising polyurethane resin, wherein the polyurethane resin comprises as a component a polycarbonate diol comprising one or more unit(s) A expressed by the following formula (1) (wherein R1 is a branched alkylene group having 3 or more and 20 or less of carbon atoms):-
公开(公告)号：US20210095423A1
公开(公告)日：2021-04-01
申请号：US17029155
申请日：2020-09-23
申请人： Ichikawa Co., Ltd.
发明人： Yasuyuki OGIWARA , Yuto MURAOKA
摘要： [Problem to be solved] To provide a papermaking felt excellent in smoothness of a joined portion (no welded portion mark or base fabric mark is generated), and an efficient manufacturing method thereof.
[Solving means] A papermaking felt wherein, in at least one base fabric composed of a MD yarn material in the felt running direction (MD direction) and a CD yarn material in the felt crossing direction (CD direction) and having MD-direction end regions and CD-direction end regions, at least one of the MD-direction end regions and the CD-direction end regions are overlapped with each other, wherein said overlapped portion is welded without removing a part or all of the MD yarn material or the CD yarn material in said overlapped portion, and wherein, when the average thickness of the welded portion of each base fabric is x (mm) and the average thickness of each base fabric before welding is y (mm), the relationship between x and y of the at least one base fabric satisfies the following formula (1): 0.5≤x/y≤0.95 (1)-
公开(公告)号：US10240293B2
公开(公告)日：2019-03-26
申请号：US15492088
申请日：2017-04-20
申请人： Ichikawa Co., Ltd
发明人： Yasuyuki Ogiwara
摘要： There is provided a papermaking felt comprising at least one base fabric and at least one batt layer integrated with the base fabric. The base fabric comprises a first base fabric, a second base fabric, and a third base fabric, the first base fabric, the second base fabric, and the third base fabric are laminated together in an arbitrary order, the first base fabric is a base fabric formed by spirally winding, in a right-handed manner, a band-shaped body having a width smaller than a width of the papermaking felt, the second base fabric is a base fabric formed by spirally winding, in a left-handed manner, a band-shaped body having a width smaller than the width of the papermaking felt, and the third base fabric is a base fabric having at least a plurality of ground warp yarns parallel to an machine direction of the papermaking felt.
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