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1. 发明专利

JP2000053455A REINFORCING MATERIAL FOR KNEAD-MOLDING HYDRAULIC MATERIAL AND KNEAD-MOLDED BODY 失效
公开(公告)号：JP2000053455A
公开(公告)日：2000-02-22
申请号：JP10235799
申请日：1999-04-09
申请人： KURARAY CO
发明人： SAITO TADASHI , MAYAHARA MITSUO , OGAWA ATSUHISA , SUEMORI HISASHI , HIKASA JUNICHI , IKUMINE TOSHIAKI , OMORI AKIO , SATO MASAHIRO
IPC分类号： C04B16/06 , C04B28/04
摘要： PROBLEM TO BE SOLVED: To obtain a reinforcing material having significantly improved uniform dispersibility and reinforcing effect by using a fiber having a specified denier, aspect ratio, fracture strength, elongation, and bending strength efficiency. SOLUTION: The fiber used has >5-denier fineness, 10 to 500 aspect ratio, >=5 g/d fracture strength, 6 to 20% elongation and >=35% bending strength efficiency, satisfying (strength efficiency)>=(elongation)×4. The fiber is preferably a polyvinylalcohol fiber. In order to increase the uniform mixing property of the fiber and to suppress production of primary cracks, the fiber is preferably controlled to 300 to 6000 d fineness, >35 aspect ratio and >=7% elongation and is preferably added by 0.2 to 2 vol.%. Or, if the main purpose is to improve the shock resistance after the primary cracks are produced, the fiber is controlled to 5 to 100 d fineness and 20 to 500 aspect ratio and is preferably added by 1 to 4 vol.%.

2. 发明专利

JPH1136136A ANTIBACTERIAL POLYVINYL ALCOHOL FIBER, ITS PRODUCTION AND CONSTRUCTION 失效
公开(公告)号：JPH1136136A
公开(公告)日：1999-02-09
申请号：JP18629897
申请日：1997-07-11
申请人： KURARAY CO
发明人： YAMAMOTO AKIRA , YAMAMOTO YOICHI , HIKASA JUNICHI
IPC分类号： D01F1/10 , D01F6/14 , D01F6/50
摘要： PROBLEM TO BE SOLVED: To obtain an antibacterial polyvinyl alcohol fiber capable of keeping high antibacterial potency over a long period and having excellent fiber performance and appearance by wet-spinning a polyvinyl alcohol spinning dope containing a silver halide. SOLUTION: Silver chloride is produced by mixing a silver nitrate solution having a silver ion concentration of 0.01-10 wt.% with a halogen solution such as sodium chloride having a halogen ion concentration corresponding to 0.8-1.5 times the silver ion concentration of the former solution. The obtained silver chloride is dispersed in a polyvinyl alcohol solution and the dispersion is added to a polyvinyl alcohol solution to prepare a spinning dope having a silver content of 0.001-5 wt.%. The objective antibacterial polyvinyl alcohol fiber is produced by the wet-spinning of the spinning dope followed by drying and thermal drawing.

3. 发明专利

JPS6251907B2 失效
公开(公告)号：JPS6251907B2
公开(公告)日：1987-11-02
申请号：JP2970380
申请日：1980-03-06
申请人： KURARAY CO
发明人： OKA ARATA , MIZOBE AKIO , HIKASA JUNICHI , OKAZAKI MASAKI
IPC分类号： C04B28/02 , C04B16/06

4. 发明专利

JP2003038052A Laver culture net 有权
标题翻译：湖文化网
公开(公告)号：JP2003038052A
公开(公告)日：2003-02-12
申请号：JP2001352894
申请日：2001-11-19
申请人： Kuraray Co Ltd , 株式会社クラレ
发明人： KAMATA HIDEKI , YAMAMOTO YOICHI , OZAKI TSUNEAKI , HIKASA JUNICHI
IPC分类号： A01G33/02
摘要： PROBLEM TO BE SOLVED: To obtain a fiber which can readily be detected by a detector even in the case of admixture of the fiber derived from a net in a product in harvesting and to provide a laver culture net composed of the fiber in relation to a net useful for culture of laver and Nemacystus decipiens. SOLUTION: This laver culture net comprises a synthetic fiber which is a fiber having >=15% maximum raflectance in a visible light range at 400-650 nm wavelength or a fiber having >=50% maximum reflectance in an infrared light range at 750-1,050 nm wavelength and/or
摘要翻译：要解决的问题：为了获得即使在收获时在产品中来自网的纤维的混合物的情况下也可以由检测器容易地检测到的纤维，并且提供由纤维组成的紫菜培养网相对于净有益于紫菜和Nemacystus decipiens的文化。解决方案：该紫菜培养网包括合成纤维，其是在400-650nm波长的可见光范围内具有≥15％最大透射率的纤维，或在750nm的红外光范围具有> = 50％最大反射率的纤维，在750-150nm波长的红外光范围内具有1,050nm波长和/或<= 35％的最小透射率，并且满足以下条件：（1）纤维含有0.01-20重量％的具有0.01-10μm平均粒子的无机细颗粒（2）无机细颗粒是选自氧化钛，硫酸钡，硫酸钙，碳酸钡，碳酸钙和氧化硅中的至少一种的颗粒。

5. 发明专利

JP2000136431A POLYVINYL ALCOHOL-BASED FIBER AND ITS PRODUCTION 失效
公开(公告)号：JP2000136431A
公开(公告)日：2000-05-16
申请号：JP31279798
申请日：1998-11-04
申请人： KURARAY CO
发明人： YAMAMOTO YOICHI , YAMAMOTO AKIRA , HIKASA JUNICHI
IPC分类号： D01F6/14 , C04B16/06 , D01F6/50
摘要： PROBLEM TO BE SOLVED: To produce a polyvinyl alcohol-based fiber scarcely causing sticking, etc., having a small cross-sectional circularity, a high strength and a high modulus of elasticity and useful for reinforcing fibers, etc., by introducing a step, etc., for washing a yarn into a process after separation from a coagulation bath to drying and treating the yarn under specific conditions. SOLUTION: At least a step for washing a yarn and a step for carrying out a wet hot drawing thereof in a wet hot drawing bath at 50-90 deg.C temperature and a lower concentration of inorganic salts than that of a coagulation bath are introduced into a process after separation from the coagulation bath to drying and the content of the inorganic salts in the yarn introduced into the drying step is 1-20 wt.%. The moisture content is 100-150 wt.% to produce a polyvinyl alcohol-based fiber having >=9 g/d single fiber strength, >=200 g/d initial modulus of elasticity,

6. 发明专利

JPH11350246A POLYVINYL ALCOHOL-BASED FIBER AND ITS PRODUCTION 失效
公开(公告)号：JPH11350246A
公开(公告)日：1999-12-21
申请号：JP23937098
申请日：1998-08-26
申请人： KURARAY CO
发明人： YAMAMOTO AKIRA , YAMAMOTO YOICHI , HIKASA JUNICHI , SANO HIROFUMI , KAMATA HIDEKI , KAGEYU AKIRA , YOSHIMOCHI TOSHINORI , SATO MASAHIRO
IPC分类号： D06M13/137 , C04B16/06 , D01F6/34 , D06M13/02 , D06M101/00 , D06M101/16 , D06M101/18 , D06M101/24 , D21H13/16
摘要： PROBLEM TO BE SOLVED: To obtain a polyvinyl alcohol-based fiber with excellent mechanical properties and dimensional stability under moist heat by dry heat drawing of a spun yarn consisting of an ethylene-vinyl alcohol-based copolymer followed by introducing both kinds of crosslinked structure associated with formalization and acetalization into the yarn. SOLUTION: This polyvinyl alcohol-based fiber with a single fiber fineness of =2C crosslinking agent such as glyoxal to form acetal-crosslinked structure. The polyvinyl alcohol-based fiber thus obtained has the following physical properties: melt fracture temperature: >=100 deg.C, dry tenacity: >=6 g/d (pref. >=10 g/d), dry/wet tenacity ratio: >=65% (pref. >=70%), and boiling water shrinkage:

7. 发明专利

JPH0891911A FIBER-REINFORCED BOARD MATERIAL 失效
公开(公告)号：JPH0891911A
公开(公告)日：1996-04-09
申请号：JP23196194
申请日：1994-09-28
申请人： KURARAY CO
发明人： HIKASA JUNICHI , MAYAHARA MITSUO , HITOMI YOSHINORI
IPC分类号： E04C2/04 , B28B23/02 , C04B32/02
摘要： PURPOSE: To provide a board of a fiber-reinforced hydraulic material such as cement, having excellent impact resistance, nailable without causing cracking in application and useful as a building material. CONSTITUTION: This board of a hydraulic material contains a meshed texture material composed of a spun synthetic fiber yarn and having a mesh size of 1-5mm as a fiber-reinforcing material and has a structure formed to place the meshed texture material in a board containing a hydraulic material such as cement as a base material at a position satisfying the formula d

8. 发明专利

JP2000328351A POLYVINYL ALCOHOL-BASED FIBER AND METHOD FOR IMPROVING WATER DISPERSIBILITY OF POLYVINYL ALCOHOL-BASED FIBER 失效
公开(公告)号：JP2000328351A
公开(公告)日：2000-11-28
申请号：JP12984099
申请日：1999-05-11
申请人： KURARAY CO
发明人： YAMAMOTO AKIRA , YAMAMOTO YOICHI , HIKASA JUNICHI
IPC分类号： C08L29/04 , D01F1/10 , D01F6/14 , D01F6/50 , D21H13/16 , D21H15/02
摘要： PROBLEM TO BE SOLVED: To provide PVA-based fibers which scarcely agglutinate each other and have excellent water dispersibility, to provide a method for effectively improving the water dispersibility of the PVA-based fibers, and to provide paper obtained from the fibers. SOLUTION: The polyvinyl alcohol-based fibers comprise a vinyl alcohol-based polymer and have many projections formed on the surfaces of the fibers. Therein, the average height of the projections is 0.1 to 10% of the diameters of the fibers, and portions corresponding to 1 to 30% of particles contained in the fibers are deposited on the surfaces of the fibers to form the projections.

9. 发明专利

JP2000154421A PRODUCTION OF POLYVINYL ALCOHOL FIBER, AND FIBER 失效
公开(公告)号：JP2000154421A
公开(公告)日：2000-06-06
申请号：JP32501098
申请日：1998-11-16
申请人： KURARAY CO
发明人： YAMAMOTO YOICHI , YAMAMOTO AKIRA , HIKASA JUNICHI
IPC分类号： D01F6/14 , D01D10/06
摘要： PROBLEM TO BE SOLVED: To provide a method for efficiently producing, at low cost, polyvinyl alcohol-based fibers, excellent in mechanical properties, rarely sticking, and high in quality. SOLUTION: This method spins a spinning solution composed of an aqueous solution of vinyl alcohol polymer into an aqueous solution of inorganic salt (coagulation bath) having dehydration/solidification capacity, either by a wet or dry/wet process, to form the wet filament bundles; dries the wet filament bundles to a water content of 25 wt.% or less based on the PVA; washes them to reduce the inorganic salt content; again dries them to a moisture content of 0.5 wt.% or less; and draws them under dry heating, to produce polyvinyl alcohol-based fibers.

10. 发明专利

JPH11262909A HYDRAULIC EXTRUSION MOLDED BODY AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH11262909A
公开(公告)日：1999-09-28
申请号：JP6595998
申请日：1998-03-17
申请人： KURARAY CO
发明人： SAITO TADASHI , SONE ISAO , HIKASA JUNICHI
IPC分类号： B28B3/20
摘要： PROBLEM TO BE SOLVED: To selectively increase the unidirectional mechanical performance of a hydraulic extrusion molded body, which includes reinforcing fibers and the ratio of a widthwise bending strength to the difference between a lengthwise bending strength and the widthwise bending strength of which is a specifies value or less, is obtained by extruding a hydraulic material through a taper barrel, in which a plate-like member for orientating fibers is provided along the extrusion direction of the hydraulic material. SOLUTION: A plate-like member for orientating fibers 1 is arranged along the extrusion direction (b) of a hydraulic material on the inner wall of a taper barrel 2 and the spreading direction (a) of the plate-like member 1 is made parallel to the extrusion direction (b) of the hydraulic material. The plate-like member 1 is installed at the same position or somewhat on the upstream side of the extrusion part 7 of the taper barrel so as to meet again hydraulic materials once divided by the plate-like member 1 in order to strongly make into an integral body, resulting in making more hard to develop phenomena such as a ply separation and the like in an extrusion molded body. By extruding the hydraulic material through the taper barrel 2, the reinforcing fibers are orientated to the extrusion direction (b) and the ratio of the widthwise bending strength to the difference between the lengthwise bending strength and the widthwise bending strength of the mold body is set to be 1.4 or less. The lengthwise bending strength of the molded body can be selectively increased.

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