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21. 发明专利

JPH01110008A TERMINAL INSULATION PROCESSING METHOD FOR TRANSMISSION AND DISTRIBUTION LINE 失效
公开(公告)号：JPH01110008A
公开(公告)日：1989-04-26
申请号：JP26743987
申请日：1987-10-21
申请人： NITTO DENKO CORP
发明人： HIROSHIMA KATSUMI , ASANO KAZUMASA
IPC分类号： H02G1/14 , H02G15/013
摘要： PURPOSE:To eliminate the corrosion of the bare copper wire part of a power transmis sion and distribution line and to enable protecting the terminal part of said line over a long period of time, by inserting an insulating cap, where the inner part of a closed end cylindrical insulator is filled with a heat-resistant sealant, into said terminal part. CONSTITUTION:An insulating cap 4, where the inner part of a closed-end cylindrical insulator 2 is filled with a heat-resistant sealant 3, is inserted into the terminal part 1 of a power transmission and distribution line. For example, a polyethylene closed-end cylindrical insulator 2 of 28mm inner diameter, 30mm outer diameter and 120mm length is filled up to a 90mm height from its bottom with a butyl rubber-based heat- resistant sealant 3, which does not hang down by its empty weight even if it is heated at 100 deg.C with a viscosity of 3000 poise (at 20 deg.C) to make an insulating cap 4. On the other hand, an insulating layer of 20mm length from the end of a copper wire of about 28mm diameter is stripped off to form a terminal part 1, which is inserted into said cap 4 and subjected to a terminal insulation processing. In this manner, the corrosion of a bare copper wire part 1' can be eliminated and the terminal part 1 can be protected over a long period of time.

22. 发明专利

JP2003213231A DOUBLE-SIDED SELF-ADHESIVE TAPE 审中-公开
公开(公告)号：JP2003213231A
公开(公告)日：2003-07-30
申请号：JP2002018287
申请日：2002-01-28
申请人： NITTO DENKO CORP
发明人： YAMAGUCHI TOMOO , ISHIKAWA MASAYUKI , KANEKO KENJI , ASANO KAZUMASA , INA YASUNOBU
IPC分类号： C09J7/02 , C09J123/22
摘要： PROBLEM TO BE SOLVED: To prepare a double-sided self-adhesive tape exhibiting little swelling of a moisture-penetrating waterproof sheet with time on pasting the moisture- penetrating water-proof sheet with a material to be adhered through this adhesive tape in a waterproof air tight installation on a construction. SOLUTION: This double-sided self-adhesive tape having an adhesive layer (A) on one side of a substrate and another adhesive layer (B) on another side of it is characterized in that at least the adhesive layer (A) is constituted by an adhesive based on a butyl rubber, and the swelling rate of the moisture- penetrating waterproof sheet is ≤0.5% on pasting the moisture-penetrating waterproof sheet and an aluminum plate through the double-sided self-adhesive tape so that the adhesive layer (A) side becomes moisture-penetrating waterproof sheet, and the adhesive layer (B) side becomes as the aluminum plate, and leaving at 60°C for 5 days. COPYRIGHT: (C)2003,JPO

23. 发明专利

JP2002147684A ANTICORROSIVE STRUCTURE OF EXPOSED PIPING SUPPORTING PART 失效
公开(公告)号：JP2002147684A
公开(公告)日：2002-05-22
申请号：JP2000341247
申请日：2000-11-09
申请人： NITTO DENKO CORP , NITTO SHINKO KK , JAPAN STEEL & TUBE CONSTR , NIPPON KOKAN KK
发明人： ASANO KAZUMASA , KASAMATSU JOICHI , NAKANO TOSHIO , KOJIMA KENICHI , KAMIURA AKIHO
IPC分类号： F16L58/10 , B29C63/06
摘要： PROBLEM TO BE SOLVED: To provide an anticorrosive structure of an exposed piping supporting part capable of easily executing the works at a job site without using a shrink sheet, improving the durability, and being applied in repairing and newly installing the piping. SOLUTION: This anticorrosive structure of the exposed piping supporting part has a coating layer 2 formed by solidifying a curable epoxy resin composition impregnated in a deformable base material in a state of closely abutted on an outer part of a piping part at a supporting part 4 supporting an outdoor exposed piping 1. This anticorrosive structure can be efficiently applied at a short time by winding the deformable base material while continuing the transferring of the fluid matter in the pipe without using a special device such as a by-pass piping, whereby the base material can be protected by the coating layer of high durability composed of an epoxy cured layer for reinforcing the base material, and the supporting part of the exposed piping can be stably prevented from being corroded for a long period without damaged even by the displacement caused by the thermal shrinkage, of the piping or the like.

24. 发明专利

JP2001056087A GAS LEAKAGE PREVENTION STRUCTURE OF GAS PIPING 失效
公开(公告)号：JP2001056087A
公开(公告)日：2001-02-27
申请号：JP23125899
申请日：1999-08-18
申请人： NITTO DENKO CORP
发明人： ASANO KAZUMASA , MATSUMOTO NORIYUKI
IPC分类号： F16L57/00
摘要： PROBLEM TO BE SOLVED: To obtain the gas leakage prevention structure of a gas piping excellent in a durability which can seal easily and surely for the step difference portion of a joint with a simple work at a piping site while continuing the gas supply under not necessitating fire, prevent the recurrence of a gas leakage stably until a regular repair and can disassemble easily at the regular repair time. SOLUTION: This is composed by covering the outside of an inside seal layer 2 composed by adhering and covering the gas leakage part 12 on the outer periphery of a gas piping 1 by the adhesive sheet 21 of a rubber system base material and by the adhesive sheet or tape 22 of a plastic system base material thereon by an outside seal layer 3 with a deform resisting property formed at a normal temperature. Thereby, a temporary repair for gas leakage prevention excellent in durability can be achieved by sealing to the large area part of a joint in a short time simple work under a normal temperature by the winding of the sheet and the impregnation of a resin.

25. 发明专利

JPH1096092A ZINC-CONTAINED ANTI-CORROSIVE MATERIAL 失效
公开(公告)号：JPH1096092A
公开(公告)日：1998-04-14
申请号：JP25104096
申请日：1996-09-24
申请人： TOGO SEISAKUSHO KK , NITTO DENKO CORP
发明人： SAKAKIBARA KAZUTOSHI , KANEKO MINORU , ASANO KAZUMASA
IPC分类号： C23F13/00 , C23F15/00
摘要： PROBLEM TO BE SOLVED: To obtain a sacrificial protection material high in anti-corrosive effect at a low cost, by dispersing a prescribed zinc powder in a base material of a synthetic resin. SOLUTION: In the anti-corrosive material, >=65% of zinc powder, >=25% of which has >=150μm particle diameter, per the whole is dispersed. The resistivity of a materail having electric conductivity obtained by the dispersed particle is shown by the sum of the internal resistance of the molecule and the contact resistance of a particle contact part. Since the internal resistance of a metal such as zinc is small, the sum of the contact resistance greatly affects the whole resistivity. Then, the sum of the contact resistance becomes small by decreasing the number of the zinc particle arranged in a fixed thick coating film by dispersing the zinc powder having relatively large particle diameter such that >=150μm in the same concentration compared to that by incorporating a zinc powder having smaller particle diameter in the same concentration. That is, anti-corrosive current is increased by making the whole resistivity sufficiently small and as a result, excellent sacrificial protection effect is attained.

26. 发明专利

JPH08320011A ANTIRUST CAP 失效
公开(公告)号：JPH08320011A
公开(公告)日：1996-12-03
申请号：JP15219495
申请日：1995-05-25
申请人： NITTO DENKO CORP
发明人： ASANO KAZUMASA , MURAKAMI KAZUYOSHI
IPC分类号： F16B37/14
摘要： PURPOSE: To provide an antirust cap which is easily installed for protecting a bolt head or a nut used for connection and fixation of structural members made of strongly magnetized body such as a general bridge, an rail road bridge or other steel members. CONSTITUTION: An outer covering body 1 which covers an outer periphery of a bolt head or a nut from an upper side, and a flange 3 integrated with a lower end outer periphery of the outer covering body 1 are made of corrosion- resistant material. A ring-like permanent magnet 4 is fixed to a lower surface of the flange 3. A ring-like sealing member 7 made of a foaming body is formed on the lower surface of the magnet 4. An antirust compound 10 is charged on a ceiling on an inner surface of the outer covering body 1 to form an antirust cap A.

27. 发明专利

JPH0655700A PASTING TYPE SEAL MATERIAL 失效
公开(公告)号：JPH0655700A
公开(公告)日：1994-03-01
申请号：JP23288292
申请日：1992-08-07
申请人： NITTO DENKO CORP
发明人： YAMASHITA SHINKICHI , ASANO KAZUMASA
IPC分类号： B32B27/02 , B32B27/00 , C09J7/02 , E04B1/68 , E04F13/08
摘要： PURPOSE:To prevent release at low speed even when a pasting type seal material is stuck and used at a stepped section or an irregular position, and to maintain the mechanical protection of a tacky sealing compound in a support base material for a prolonged term by coating the rear of a nonwoven fabric, a surface of which is coated with a resin film, with the tacky sealing compound. CONSTITUTION:The surface side of a nonwoven fabric 1 is coated with a resin film 2, the resin film 2 is formed in an extremely thin shape so as not to have a substantially dynamic effect on the nonwoven fabric 1, and a resin having large elongation is used. A tacky sealing compound 3 applied on the rear side of the nonwoven fabric 1 is thickened sufficiently so that the tacky seal compound 3 is pressed and can be penetrated enough into clearances. Particularly excellent waterproofness is obtained by rubber pressure-sensitive adhesives, in which a tackifier and a softening agent are mixed into a main polymer such as a butyl rubber, a natural rubber, etc. Release paper 4 is laminated on the rear of the tacky sealing compound 3. The spun-bonded nonwoven fabric of a polyester fiber are particularly superior as the nonwoven fabric 1.

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