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1. 发明专利

JP2002276867A JOINT FOR PIPE CONNECTION 失效
公开(公告)号：JP2002276867A
公开(公告)日：2002-09-25
申请号：JP2001072424
申请日：2001-03-14
申请人： SEKISUI CHEMICAL CO LTD
发明人： TAKENISHI HIDEYA
IPC分类号： F16L19/06 , F16L33/22
摘要： PROBLEM TO BE SOLVED: To provide a joint for pipe connection preventing breaking off of a seal rubber from a recessed part of a core circumferential face in initial insertion of a pipe by reducing an insertion angle of the joint to a core and reducing an acting force of the core circumferential face to the seal rubber at contact. SOLUTION: The joint 1 for pipe connection has the recessed part 6 in the circumferential face of the core 5 provided in a sleeve 2 and the ring like seal rubber 7 is arranged in the recessed part 6. It is characterized by that a diameter of a tip 5c portion of the core 5 is enlarged, the tip 5c significantly protrudes from an end rim 2b of the sleeve 2, and an initial insertion limit angle of the pipe 8 in connection to the core 5 is provided so that it is

2. 发明专利

JP2001018282A PRODUCTION OF CORRUGATED PIPE MADE OF SYNTHETIC RESIN 失效
公开(公告)号：JP2001018282A
公开(公告)日：2001-01-23
申请号：JP19192299
申请日：1999-07-06
申请人： SEKISUI CHEMICAL CO LTD
发明人： TAKENISHI HIDEYA
IPC分类号： B29C48/90 , B29C48/32 , B29C47/90 , B29C47/20
摘要： PROBLEM TO BE SOLVED: To reduce the uneven thickness of a resin by arranging a molding mold with sealing stoppers having different outside diameters placed to adjoin the vicinity of its resin inlet. SOLUTION: A molding part M connects a mold block 411 and forms a molding upper mold 41 and a molding lower mold 42, which are arranged adjacently to make the insides tubular and to be rotatable in the shape of an endless belt. Two sealing stoppers 3 are fitted to the molding part M, and the outside diameter of the stopper arranged close to a resin inlet is made 14.0 mm, and the outside diameter of the stopper arranged in the flow direction of a resin is made 14.5 mm. The stainless steel stopper 30 mm in length of a smaller inside diameter is arranged close to the resin inlet, and the other is arranged to adhere to it.

3. 发明专利

JP2003213061A VINYL CHLORIDE-BASED RESIN COMPOSITION 审中-公开
公开(公告)号：JP2003213061A
公开(公告)日：2003-07-30
申请号：JP2002018811
申请日：2002-01-28
申请人： SEKISUI CHEMICAL CO LTD
发明人： TAKENISHI HIDEYA , OKUSAKO YOSHIAKI
IPC分类号： C08J5/00 , C08K3/00 , C08K3/26 , C08K3/34 , C08L27/06
摘要： PROBLEM TO BE SOLVED: To provide a vinyl chloride-based resin composition having excellent impact resistance without deteriorating the original physical properties (tensile strength, tensile breaking elongation) of the vinyl chloride resin, and to provide a molded article. SOLUTION: This vinyl chloride-based resin composition is characterized by comprising 100 pts.wt. of a vinyl chloride-based resin having a polymerization degree of 600 to 1,600 and 20 to 50 pts.wt. of at least two inorganic fillers, and a molded article comprising the composition. COPYRIGHT: (C)2003,JPO

4. 发明专利

JP2006240181A REGENERATION METHOD OF BURIED ACCESS PIPE 审中-公开
公开(公告)号：JP2006240181A
公开(公告)日：2006-09-14
申请号：JP2005061351
申请日：2005-03-04
申请人： SEKISUI CHEMICAL CO LTD
发明人： TAKENISHI HIDEYA , TAKAHASHI TOSHIO , UEMICHI TSUKASA , KITAYAMA YASUSHI
IPC分类号： B29C63/34 , F16L1/00
摘要： PROBLEM TO BE SOLVED: To provide a regeneration method of a buried access pipe which, in regenerating the access pipe by inserting a regeneration tube from a main pipe side to the access pipe, improves the workability of the inserting work by which the regeneration tube is drawn in to a predetermined position in the access pipe and also shortens the time of the lining work. SOLUTION: The part 11 having an enlarged diameter is preliminarily formed in the rear end (upstream end of the drawing direction) of the regeneration tube 1 made of a thermoplastic resin. The regeneration tube 1 is inserted toward the inside of the access pipe 6 via the main pipe 5 in such a state that the front end side of the regeneration tube 1 is closed by the front end stopper 2 and the rear end side by the rear end stopper 3. In case the temperature of the regeneration tube 1 drops on the way of the insertion, steam is introduced into the regeneration tube 1 from the steam hose 7 connected to the front end stopper 2. After the inserting process a packer 8 is brought in near the opening 63 of the access pipe, the packer 8 is enlarged in diameter, and the diameter-enlarged part 11 is closely attached to the peripheral edge of the opening of the access pipe to obtain good water-stopping property in the vicinity of the opening of the access pipe. COPYRIGHT: (C)2006,JPO&NCIPI

5. 发明专利

JP2003128862A VINYL CHLORIDE-BASED RESIN COMPOSITION AND SPIRAL TUBE 审中-公开
公开(公告)号：JP2003128862A
公开(公告)日：2003-05-08
申请号：JP2001306605
申请日：2001-10-02
申请人： SEKISUI CHEMICAL CO LTD
发明人： TAKENISHI HIDEYA , INOUE HIDEKI , HITOMI SEIICHI
IPC分类号： B29C47/00 , B29C53/78 , B29K9/00 , B29K9/06 , B29K25/00 , B29K27/00 , B29K27/06 , B29K33/00 , B29L23/00 , C08L23/28 , C08L27/06 , C08L27/24 , C08L51/04 , H02G3/04
摘要： PROBLEM TO BE SOLVED: To obtain a vinyl chloride-based resin composition which, when used as a spiral tube, demonstrates in a well-balanced manner various physical properties such as excellent heat resistance, impact resistance, compressive strength, tensile strength, and flame resistance, and to provide a spiral tube using the same. SOLUTION: From the vinyl chloride-based resin composition consisting of a blend of a chlorinated vinyl chloride-based resin and a vinyl chloride-based resin, MBS, and CPE, there is formed a profile made of the synthetic resin through a profile extrusion, and this profile is wound spirally to form the spiral tube.

6. 发明专利

JP2002148166A TENSILE TEST JIG FOR CORRUGATED PIPE 失效
公开(公告)号：JP2002148166A
公开(公告)日：2002-05-22
申请号：JP2000342328
申请日：2000-11-09
申请人： SEKISUI CHEMICAL CO LTD
发明人： TAKENISHI HIDEYA
IPC分类号： G01N3/04 , F16L3/02
摘要： PROBLEM TO BE SOLVED: To provide a test body holding jig capable of surely holding a corrugated pipe without causing any breakage when a tensile test is carried out directly on the corrugated pipe having a recess groove arranged substantially orthogonally to the tube axis on the outer circumferential face. SOLUTION: This tensile test jig for the corrugated pipe having a recess groove arranged substantially orthogonally to the pipe axis on the outer circumferential face is constructed of a pair of plate type main bodies each having an L-shaped cross section. In one end of each main body, a semispherical cutout part to be fitted in the recess groove of the corrugated pipe is arranged, while in the other end, a through- hole is arranged for passing a rod type body movably. In the rod body, a holding plate held by a test body holding apparatus in a tensile testing machine is arranged in the approximately central part. In only one of a pair of L-shaped plate type main bodies, a plate having a length equal to a total length given by the sides each having the semispherical cutout part when a pair of main bodies are combined together is arranged. When a pair of L-shaped main bodies are combined together, the respective cutout parts combined together form a circle for locking the recess groove in the corrugated pipe, and a short pipe is inserted into the inside of the corrugated pipe locked part, and consequently, the holding plate is held by the holding apparatus in the testing machine.

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