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31. 发明专利

JPH0596533A ADJUSTING DEVICE FOR POSITION OF ROTARY CUTTER IN PELLETIZER 失效
公开(公告)号：JPH0596533A
公开(公告)日：1993-04-20
申请号：JP29068791
申请日：1991-10-09
申请人： FUJIKURA LTD
发明人： MATSUURA KATSUHISA , SUZUKI YASUO , KUBO TAKASHI , ISHIKAWA TORAICHI , SAKAGUCHI HISAO
IPC分类号： B29B9/02 , B29B9/06
摘要： PURPOSE:To provide the title device capable of always easily and quantitatively controlling the clearance between a rotary cutter and a die plate to the optimum range. CONSTITUTION:An optical displacement meter 5 is provided in the pelletizing chamber 23 of a pelletizer in opposed relation to a rotary cutter 3 and the spaced-apart distance of the rotary cutter 3 from the contact position of the rotary cutter 3 with a die plate 21 capable of being accurately known by a contact detection circuit 7, that is, the clearance between the rotary cutter 3 and the die plate 21 is displayed on a clearance display device 8 as digital quantity. Further, a voltage output device 91 outputting the voltage corresponding to the difference between the displayed numerical value of the clearance display device 8 and a predetermined optimum clearance is provided and the driving of a motor 92 is controlled on the basis of the output voltage and a worm 6 is rotated to automatically allow the rotary cutter 3 to advance and recede with respect to the die plate 21 to adjust the clearance.

32. 发明专利

JPH04363808A SEMICONDUCTIVE COMPOSITION MATERIAL AND POWER CABLE 失效
公开(公告)号：JPH04363808A
公开(公告)日：1992-12-16
申请号：JP16403091
申请日：1991-06-08
申请人： FUJIKURA LTD
发明人： ISHIKAWA TORAICHI , TANIDA MITSUTAKA , TAKAHASHI SUSUMU , TOMARU ISAMU , NAGAI KENJI , IGARASHI MITSURU
IPC分类号： C08K3/00 , C08K3/24 , C08K3/26 , C08L23/08 , C08L31/04 , C08L51/06 , H01B1/20 , H01B7/29 , H01B9/02
摘要： PURPOSE:To provide a semiconductive composition material with excellent characteristics, excellent heat resistance in particular. CONSTITUTION:A polymer (EVA-PVC) grafted with vinyl chloride to an ethylene vinyl acetate copolymer and an ethylene vinyl acetate copolymer (EVA) are combined at the blend ratio 90/10-20/80. In a semiconductive composition material combined with a blend composition material 100 pts.wt. added with an adequate quantity of a conductivity imparting agent to the above combination and calcium aluminate or calcium silicate 0.5-20 pts.wt., excellent heat resistance is provided by the calcium aluminate or calcium silicate.

33. 发明专利

JPH04198273A SEMICONDUCTING RESIN COMPOSITION 失效
公开(公告)号：JPH04198273A
公开(公告)日：1992-07-17
申请号：JP32452690
申请日：1990-11-27
申请人： FUJIKURA LTD
发明人： ISHIKAWA TORAICHI , TAKAHASHI SUSUMU , MAEDA KAZUNORI , IGARASHI MITSURU , NAGAI KENJI
IPC分类号： C08K3/04 , C08K3/02 , C08L101/00 , C09C1/50
摘要： PURPOSE:To prevent the poor dispersion of carbon black, an increase in melt viscosity, and the deterioration of extrusion processability by using a thermoplastic resin and a specified conductive furnace carbon black as constituents. CONSTITUTION:100 pts.wt. thermoplastic resin (e.g. an ethylene/vinyl acetate copolymer) is mixed with 40-100 pts.wt. conductive furnace carbon black having an iodine adsorption of 20-80mg/g and a DBP absorption of 120-180ml/100g and, if necessary, a crosslinking agent (aid), an age resister, etc., to give the title composition.

34. 发明专利

JPH03173011A POWER CABLE 失效
公开(公告)号：JPH03173011A
公开(公告)日：1991-07-26
申请号：JP31174089
申请日：1989-11-30
申请人： FUJIKURA LTD
发明人： ISHIKAWA TORAICHI , TANIDA MITSUTAKA , TAKAHASHI SUSUMU , IGARASHI MITSURU , NAGAI KENJI
IPC分类号： H01B1/24 , H01B9/02
摘要： PURPOSE:To make a resin composition constituting a semiconductive layer strippable in an arbitrary direction when the layer is peeled from an insulated layer to facilitate the terminal treatment work of a power cable. CONSTITUTION:The external circumference of a conductor 1 is covered with an internal semiconductive layer 2, an insulated layer 3 and an external semiconductive layer 4. The external semiconductive layer 4 is constituted of a resin composition made up by mixing 10-100 parts by weight of conductive carbon black with 100 parts by weight of acrylic modified vinyl acetate - ethylene copolymer resin single having a core-shell structure, or blend polymer of this copolymer resin at 5wt.% or more and polyolefine polymer at 95wt.% or less. The external semiconductor layer 4 is provided with appropriate adhesion and peelability referring to the insulated layer 3 made up of crosslinked polyethylene or crosslinked ethylene propylene rubber, etc., so that base polymer itself becomes a uniform disperse system and can be easily peeled in an arbitrary direction at a necessary quantity without being peeled in a specific direction when the semiconductive layer is peeled off. It is thereby possible to easily carry out the terminal treatment work.

35. 发明专利

JPH0355715A POWER CABLE 失效
公开(公告)号：JPH0355715A
公开(公告)日：1991-03-11
申请号：JP19082389
申请日：1989-07-24
申请人： FUJIKURA LTD
发明人： ISHIKAWA TORAICHI , NIWA TOSHIO , TAKAHASHI SUSUMU , IGARASHI MITSURU , NAGAI KENJI
IPC分类号： H01B1/20 , H01B9/02
摘要： PURPOSE:To facilitate peeling of a semiconducting layer by providing the semiconducting layer for which a certain amount of carbon black is added to a blended polymer of a silica diffusion ethylene propylene terpolymer, or of the polyolefine polymer other than this. CONSTITUTION:On a periphery of a conductor 1, an internal semiconducting layer 2 is coated, on which an insulating layer 3 is coated. The insulating layer 3 is composed of a crosslinked resinous composition for which polyolefine resin such as crosslinked polyethylene, crosslinked ethylene propylene rubber is extrusively coated and heated. On the insulating layer 3, an external semiconducting layer 4, a shielding layer 5, a sheath 6 are coated in turn, so as to obtain a power cable. The external semiconducting layer 4 is formed by adding a resinous composition in which 10-100 weight part of conductive carbon black is added to a 100 weight part of blended polymer of silica diffusion ethylene propylene terpolymer alone, or of 10 weight% or more of silica diffusion ethylene propylene terpolymer with 90 weight% or less of polyolefine polymer other than this, and by extrusively coating and forming this on the insulating layer 3.

36. 发明专利

JPH0329210A ELECTRIC POWER CABLE 失效
公开(公告)号：JPH0329210A
公开(公告)日：1991-02-07
申请号：JP16330689
申请日：1989-06-26
申请人： FUJIKURA LTD
发明人： ISHIKAWA TORAICHI , NIWA TOSHIO , TAKAHASHI SUSUMU , IGARASHI MITSURU , NAGAI KENJI
IPC分类号： C08K3/04 , C08L23/28 , H01B1/24 , H01B9/02
摘要： PURPOSE:To make terminal treatment work of an electric power cable easy by composing a semiconductive layer with a resin composition consisting of chloroethylene-propylene rubber and a conductive carbon black in a defined composition ratio. CONSTITUTION:A bond-type inner semiconductor layer 2 is formed on a conductor 1 and an insulating layer 3 of cross-linked polyethylene, etc., is formed on the layer 2. Then, an outer semiconductor layer 4 of a composition consisting of 100 pts.wt. of blend polymer of chloroethylene-propylene rubber and polyolefin-type polymer besides the rubber and 10-100 pts.wt. of conductive carbon black is formed further on the layer 3. A shielding layer 5 and a sheathe 6 are successively formed on the layer 4. As a result, the layer 4 has proper adhesion strength and releasability to the layer 3 and can be peeled off in optional direction to a necessary extend and terminal treatment work becomes easy.

37. 发明专利

JPH02260323A POWER CABLE 失效
公开(公告)号：JPH02260323A
公开(公告)日：1990-10-23
申请号：JP8081289
申请日：1989-03-31
申请人： FUJIKURA LTD
发明人： ISHIKAWA TORAICHI , TAKAHASHI SUSUMU , HATADA MICHINORI , IGARASHI MITSURU , NAGAI KENJI
IPC分类号： H01B9/02
摘要： PURPOSE:To obtain a semiconductive layer having proper peeling property and adhesion to an insulating layer by blending a specified amount of conductive carbon black to propylene. alpha-olefin copolymer or a blend polymer of this copolymer with a polyolefin polymer other than this. CONSTITUTION:The outer circumference of a conductor 1 is coated with an inner semiconductive layer 2. The inner semiconductive layer 2 is coated with an insulating layer 3. The insulating layer 3 is further successively coated with an outer semiconductive layer 4, a shielding layer 5 and a sheath 6 to form an electric power cable. The outer semiconductive layer 4 is formed by extruding and coating a resin composite in which 10-100 parts by weight cf conductive carbon black is blended to 100 parts by weight of propylene. alpha-olefin copolymer having the propylene content of 40-70% alone or a blend polymer of 5wt.% or more of this copolymer with less than 95wt.% of a polyolefin polymer other than this on the insulating layer 3.

38. 发明专利

JPH02233739A FLAME-RETARDANT RESIN COMPOSITION 失效
公开(公告)号：JPH02233739A
公开(公告)日：1990-09-17
申请号：JP5408989
申请日：1989-03-07
申请人： FUJIKURA LTD
发明人： ARAI TOSHIHIRO , SUNATSUKA HIDEO , TANIDA MITSUTAKA , MATSUURA MICHIO , ISHIKAWA TORAICHI
IPC分类号： C08L23/02 , C08L87/00 , H01B3/44
摘要： PURPOSE:To obtain the title composition suitable as a coating material, etc., for electric wire, cable, etc., free from reduction in mechanical characteristics and deterioration of freeze resistance by blending an olefin-based polymer with a polyimide resin and a silicone resin in a specific ratio. CONSTITUTION:(A) 100pts.wt. olefin-based polymer is blended with (B) 0.1-80pts. wt. polyimide resin (preferably polyaminobismaleimide) and (C) 0.5-30pts.wt. silicone resin (in principle, preferably silicone resin having a functional group containing no halogen at side chains and end groups) to give the aimed composition.

39. 发明专利

JPH02155939A FLAME-RETARDANT RESIN COMPOSITION 失效
公开(公告)号：JPH02155939A
公开(公告)日：1990-06-15
申请号：JP31072388
申请日：1988-12-08
申请人： FUJIKURA LTD
发明人： ARAI TOSHIHIRO , SUNATSUKA HIDEO , TANIDA MITSUTAKA , MATSUURA MICHIO , ISHIKAWA TORAICHI
IPC分类号： C08K3/02 , C08K3/04 , C08K5/32 , C08K5/33 , C08L23/02 , H01B3/44
摘要： PURPOSE:To obtain a resin compsn. with high flame retardance without decrease in mechanical characteristics and deterioration of freeze resistance by adding an oxime compd. and red phosphorus to an olefin polymer. CONSTITUTION:A flame-retardant resin compsn. is obtd. by adding 0.1-30pts.wt. oxime compd. and 0.5-20pts.wt. red phosphorus to 100pts.wt. olefin polymer. The oxime compd. includes p-quinone dioxime, p,p'-dibenzoylquinone dioxime, nitroso compd. convertible to oxime compd. through nitroso-oxime tautomerism, such as poly-p-nitrosobenzene and N-(2-methyl-2-nitrosopropyl)-4-nitrosoaniline. The red phosphorus is a powdery material obtd. by heating a liq. yellow phosphorus below its m.p. and it may contain a very small amt. of sodium aluminate or magnesium oxide as a stabilizer.

40. 发明专利

JPH0278111A ANT-PROOFING WIRE/CABLE 失效
公开(公告)号：JPH0278111A
公开(公告)日：1990-03-19
申请号：JP22813788
申请日：1988-09-12
申请人： FUJIKURA LTD
发明人： ISHIKAWA TORAICHI , SUNATSUKA HIDEO , MATSUURA MICHIO , ASABA SHOJI
IPC分类号： H01B7/17 , H01B7/28
摘要： PURPOSE:To enhance its bendability by providing an ant-proofing layer of specific resin. CONSTITUTION:In order to enhance the bendability of its ant-proofing layer, an ant-proofing layer 1 of fluorescent resin such as polytetrafluoroethylene, etc., is provided around the outer periphery of a cable comprising an insulating layer 3 of polyethylene resin, crosslinked polyethylene resin, polyvinyl chloride resin and the like, provided on a conductor 2 of copper, aluminium and the like; generation of cracks at low temperatures is thus prevented, so that it becomes an ant-proofing wire/cable stable in ant-proofing performance.

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