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31. 发明专利

JPH04356539A POLYMER COMPOSITION FOR EXPANSION MOLDING 失效
公开(公告)号：JPH04356539A
公开(公告)日：1992-12-10
申请号：JP16925691
申请日：1991-06-13
申请人： MITSUBISHI CABLE IND LTD
发明人： MORITA YUKIO , ZUSHI TOSHIHIRO , MATSUDA NOBUYOSHI , SUGA KANEHARU , TAKAI TAKUMA
IPC分类号： B29C47/02 , C08J9/12 , C08L23/16 , H01B3/44 , H01B13/14
摘要： PURPOSE:To provide a polymer composition which is useful to form a foamed insulation layer by expansion-molding it in a conductor and which can form a foamed insulation layer having an expansion ratio as high as above 70%, a small dielectric loss tangent (tandelta) at high-frequencies and excellent insulation properties. CONSTITUTION:A polymer composition essentially consisting of a base resin and a nucleator to be molded in the pressure of a blowing agent, wherein the base resin comprises a propylene/ethylene copolymer containing 0.5-20wt.% ethylene component.

32. 发明专利

JPH0482112A WOVEN FLAT CABLE AND MANUFACTURING DEVICE THEREFOR 失效
公开(公告)号：JPH0482112A
公开(公告)日：1992-03-16
申请号：JP19683490
申请日：1990-07-25
申请人： MITSUBISHI CABLE IND LTD
发明人： TAKAI TAKUMA , KIMURA KATSUHISA , ONO TAKESHI , FUKUSHI SEIICHI
IPC分类号： H01B13/00 , H01B7/08 , H01B13/12
摘要： PURPOSE:To eliminate a unraveling work for both ends of a woven flat cable in treating the ends by alternately providing an arbitrary length of woven section having wefts woven into wires and warps at arbitrary pitches, and an arbitrary length of non-woven section without weaving the wefts into the wires and warps, respectively in a lengthwise direction, and forming a dense woven portion at both ends of each woven section. CONSTITUTION:A distribution guide device 12 for guiding wires 6 and warps 7 for preventing the entanglement and entwinement thereof is arranged on the downstream side of a warp feed device 11. Also, a weaving machine 13 for weaving wefts 8 into the wires 6 and warps 7 whenever necessary for making a woven flat cable 1, is provided on the downstream side of the distribution guide device 12. In this case, the woven flat cable 1 comprises an arbitrary length of woven section 2 having the wefts 8 woven into the wires 6 and warps 7 at arbitrary pitches, and an arbitrary length of non-woven section without weaving the wefts 8 into the wires 6 and warps 7, alternately in a lengthwise direction. In addition, both ends of each woven section 2 are provided with a dense woven portion 4 having the wefts 8 woven into the wires 6 and warps 7 by a plurality of times in the same position.

33. 发明专利

JPS6372734A MASTERBATCH 失效
公开(公告)号：JPS6372734A
公开(公告)日：1988-04-02
申请号：JP21647886
申请日：1986-09-12
申请人： MITSUBISHI CABLE IND LTD
发明人： MORITA YUKIO , TAKAI TAKUMA
IPC分类号： C08J3/22 , B29B9/12 , B29K23/00 , B29K105/04 , C08J9/06
摘要： PURPOSE:To obtain a masterbatch which has a maximum outer diameter and a maximum length in specified ranges, forms little powder even when pneumatically conveyed and can be easily and homogeneously mixed in an extruder, by cutting an extrudate of a polyolefin containing a blowing agent in a specified weight ratio. CONSTITUTION:100pts.wt. polyolefin (e.g., polyethylene) is mixed with 10-100pts. wt. blowing agent (e.g., azodicarbon-amide). The obtained composition is extruded to form a thin string of a maximum outer diameter of 1-2.5mm and the extrudate is cut to a length of 1-3mm to obtain the purpose masterbatch. When extrusion is performed by using this masterbatch, it is mixed with raw polyolefin pellets by using a common extruder, and the mixture is extruded. In this way, synthetic resin foams for foam insulated cables can be easily produced inexpensive with good dimensional accuracy.

34. 发明专利

JPS623923A MANUFACTURE OF HEAT INSULATING PIPE 失效
公开(公告)号：JPS623923A
公开(公告)日：1987-01-09
申请号：JP14317385
申请日：1985-06-28
申请人： MITSUBISHI CABLE IND LTD
发明人： MOMOSE CHIAKI , MATSUMOTO SHIGEO , HORIUCHI KAZUYA , MOGI ISOJI , TAKAI TAKUMA
IPC分类号： B29C44/32 , B29C47/02 , B29C47/06 , B29C47/26 , B29C47/28 , B29C47/92 , B29C47/94 , B29K105/04 , B29K105/24 , B29L9/00
摘要： PURPOSE:To stably and uniformly manufacture a heat-insulating pipe in a continuous length by a method wherein a long land die is used as the extruder die of an extruder and, at the same time, a composition, the major component of which is crosslinking resin and expanding agent, is used as composition for forming expanded layer. CONSTITUTION:Composition for forming expanded layer and composition for forming skin layer are fed to a head 8. Lubricant is fed between a long land die 11 and a pipe 1 with a pump 13 so as to smoothly extrude the pipe through the long land die 11 and to be able to easily adjust the extent of foaming of an expanded layer by adjusting the extrusion conditions such as extrusion temperature, extrusion speed and the like on the basis of the detected result of the pressure of the forced fed lubricant. Resin, the crosslinking of which does not occur at the inlet of an extruder and yet proceeds to the state, in which the degree of crosslinking is 5-80%, at the outlet 14 of the long land die 11, such as crosslinking polyolefin, chemical crosslinking polyolefin or the like is used as the crosslinking resin.

35. 发明专利

JPS61292813A APPARATUS FOR MANUFACTURING TAPE-LIKE WIRE 失效
公开(公告)号：JPS61292813A
公开(公告)日：1986-12-23
申请号：JP12183985
申请日：1985-06-05
申请人： MITSUBISHI CABLE IND LTD
发明人： TAKAI TAKUMA , MIURA MASAHIRO , KATO MASAO , MOGI ISOJI
IPC分类号： H01B13/00

36. 发明专利

JP2003197050A HIGH FREQUENCY CABLE MANUFACTURING DEVICE 审中-公开
公开(公告)号：JP2003197050A
公开(公告)日：2003-07-11
申请号：JP2001393781
申请日：2001-12-26
申请人： MITSUBISHI CABLE IND LTD
发明人： TAKAI TAKUMA , YOKOYAMA TOMOHIRO , SUGA KANEHARU , KASABO ITSURO
IPC分类号： H01B13/00 , H01B13/016
摘要： PROBLEM TO BE SOLVED: To provide a high frequency cable manufacturing device preventing shape fluctuation in a corrugated pipe for maintaining and improving an electric characteristic of a cable. SOLUTION: A feeding device 5 feeding a pipe body 1, a corrugating machine 6 corrugating the pipe body 1, and a receiving device 7 receiving the corrugated pipe 2 sent out of the corrugating machine 6 are provided in a row from an upstream side to a downstream side. The corrugating machine 6 detects axial forming resistance from the pipe body 1 and the corrugated pipe 2 by a measuring apparatus 4, and a control means S is provided for controlling a work speed of a corrugating work driving motor M 2 of the corrugating machine 6 so as to provide constant axial forming resistance. COPYRIGHT: (C)2003,JPO

37. 发明专利

JPH10193020A MANUFACTURE OF WIRE TIP 失效
公开(公告)号：JPH10193020A
公开(公告)日：1998-07-28
申请号：JP144597
申请日：1997-01-08
申请人： MITSUBISHI CABLE IND LTD
发明人： TAKAI TAKUMA , OBARA HIDEO , WADA MUTSUMI
IPC分类号： B21F11/00 , B21F13/00 , H01L21/321 , H01L21/60
摘要： PROBLEM TO BE SOLVED: To provide a large volume of wire tips excellent in dimensional accuracy and parallelism by arranging a plurality of gutter-shaped storage pieces on each side of a polygon, neatly winding a large number of wires, cutting the wires between the gutter-shaped storage pieces, and slicing the wire to the prescribed thickness in the longitudinal direction of the wire. SOLUTION: Four gutter-shaped storage pieces 3 are fitted to each side part of a polygonal, e.g. square turn wheel 4 with an opening part of a recessed part 3a toward the outer peripheral side in a bobbin shape. A large number of copper wires 2 are fed into the turn wheel 4, and the turn wheel 4 is turned to feed the copper wires 2 into the recessed part 3a of the gutter-shaped storage pieces 3 in a horizontal and dense manner, and stacked up to perform the neat winding. A lid is fitted to each gutter-shaped storage piece 3, and the copper wires 2 in the recessed part 3a are pressed and bound. The neatly wound copper wires 2 are cut between the adjacent gutter-shaped storage pieces 3 to detach each gutter-shaped storage piece 3 from the turn wheel 4. The separated gutter- shaped storage pieces 3 are sliced together with the copper wires 2 inside including the lid along the longitudinal direction of the copper wire 2.

38. 发明专利

JPH10112916A APPARATUS FOR PROCESSING TERMINAL OF HIGH-FREQUENCY COAXIAL CABLE 失效
公开(公告)号：JPH10112916A
公开(公告)日：1998-04-28
申请号：JP28187096
申请日：1996-10-02
申请人： MITSUBISHI CABLE IND LTD
发明人： YASUHARA TAKESHI , TAKAI TAKUMA , SUGA KANEHARU
IPC分类号： H02G1/12
摘要： PROBLEM TO BE SOLVED: To provide an apparatus for processing the terminals of high-frequency coaxial cables, capable of continuously and automatically performing the operation of tapping inner conductors and the operation of chamfering the edge between the end faces and circumference of inner conductors in a single process step. SOLUTION: An apparatus for processing terminals of high-frequency coaxial cables contains a tapping section 10 that revolves and penetrates into the inner conductor 3 of a high-frequency coaxial cable 1 for tapping the inner conductor 3, a deburring edge 20 that revolve together with the tapping section 10 and chamfers the edge between the end face and circumference of the inner conductor 3. Provided with a tapper mechanism, the tapping section 10 revolves in such a direction as to penetrate into the inner conductor 3 when it advances, and in such a direction as to recede from the inner conductor 3 when it recedes.

39. 发明专利

JP2534594B2 失效
公开(公告)号：JP2534594B2
公开(公告)日：1996-09-18
申请号：JP30241991
申请日：1991-10-21
申请人： MITSUBISHI CABLE IND LTD
发明人： TAKAI TAKUMA , WADA MUTSUMI , ONO TAKESHI
IPC分类号： B29C47/02 , B29C47/40 , B29C48/92 , B29L31/34 , H01B13/14 , B29C47/92

40. 发明专利

JPH0820062A EXTRUSION MOLDING METHOD 失效
公开(公告)号：JPH0820062A
公开(公告)日：1996-01-23
申请号：JP15699594
申请日：1994-07-08
申请人： MITSUBISHI CABLE IND LTD
发明人： OTA YUTAKA , KAIDE TAMOTSU , TAKAI TAKUMA , YAMAZAKI MOTOHIKO
IPC分类号： B29C47/86 , B29C47/94 , B29K21/00
摘要： PURPOSE:To provide an extrusion molding method preventing the generation of die refuse in extrusion molding to obtain an extrusion molded article having beautiful surface appearance. CONSTITUTION:A compound consisting of 100 pts.wt. of plastic or/and rubber and 50-300 pts.wt. of an additive composed of an insoluble substance is subjected to extrusion molding at extrusion temp. while a lubricant is injected into a die to be applied to the inner wall thereof or the die is heated to temp. higher than molding temp. by 10-20 deg.C to subject the compound to extrusion molding or the compound is subjected to extrusion molding by combining the above mentioned methods. Therefore, the generation of die refuse is prevented and an extrusion molded article or an insulated electric wire having beautiful surface appearance is obtained. Further, the generation of the deficiency such as spark- out of the electric wire can be prevented. Furthermore, extrusion molding speed can be increased and the production efficiency of the extrusion molded article can be enhanced and the monitoring of die refuse in a production line can be made unnecessary.

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