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1. 发明专利

JP2001047499A BLOW-MOLDED PRODUCT MADE BY USING MULTILAYER RESIN MOLDING WASTE MATERIAL 失效
公开(公告)号：JP2001047499A
公开(公告)日：2001-02-20
申请号：JP2000155881
申请日：2000-05-26
申请人： NIPPON STEEL CHEMICAL CO , NIPPON STEEL CORP
发明人： OTA AKIRA , IMAMURA SHINJI , KANEDA TSUTOMU
IPC分类号： A01K61/00 , B29C49/00 , C08J5/00 , C08L23/06
摘要： PROBLEM TO BE SOLVED: To simply and inexpensively manufacture a molding having a light weight, high rigidity and long lifetime by recycling a waste material of a multilayer resin blow-molded product containing a highly molecular weight high-density polyethylene and polyamide, and blow molding a thermoplastic resin having a specified ratio of the recycled resin and a specified weight ratio of respective components. SOLUTION: A waste material of a multilayer resin blown molding containing a highly molecular weight high-density polyethylene(HMHDPE) and polyamide(PA) is recycled. A thermoplastic resin containing 70 wt.% of the recycle resin and setting to 3 to 10% of weight ratio of the PA component to the HMHDPE component is blow method, thereby manufacturing a blow-molded product for a fuel tank or the like of an automobile. For example, a float of a culturing raft having a curved surface closed by a groove and a semi-sphere at both ends of a cylindrical part is blow-molded. According to this, the blown molding can be weight-lightened, and lifetime-prolonged. Further, its rigidity and operability can be improved. Its cost can be reduced, and an environmental disruption in association with a damage can be prevented.

2. 发明专利

JPH10337771A BLOW MOLDING MACHINE AND BLOW MOLDING METHOD 失效
公开(公告)号：JPH10337771A
公开(公告)日：1998-12-22
申请号：JP15261797
申请日：1997-06-10
申请人： NIPPON STEEL CHEMICAL CO , NIPPON STEEL CORP
发明人： KANEDA TSUTOMU , IMAMURA SHINJI
IPC分类号： B29C49/04 , B29C49/28 , B29C49/42 , B29C49/78 , B29L22/00
摘要： PROBLEM TO BE SOLVED: To provide a blow molding machine for easily decreasing a partial thickness reduction in the case of molding a blow molding with different blow-up ratio, and a method for blow molding it. SOLUTION: In the blow molding machine comprising a pre-pinch means and a blowing mold disposed under a die head 3, an oblique angle of a pinch bar moving direction from a horizontal plane when a parison 2 is pinched from right and left by pinch bars 5a, 5b oppositely movable in the pre-pinch means can be regulated to arbitrary + and - angles. And, two times of pinching having different oblique angles from the horizontal plane in pinch bars 5a, 5b moving directions are executed while urging the parison 2, part of the parison 2 between two positions of pre-pinching is held in a cavity of the mold and blown. Accordingly, a hollow molding of a thin substantially rectangular parallelepiped shape of box-like state is easily molded.

3. 发明专利

JPH106390A BLOW MOLDING METHOD AND APPARATUS THEREFOR 失效
公开(公告)号：JPH106390A
公开(公告)日：1998-01-13
申请号：JP15820096
申请日：1996-06-19
申请人： NIPPON STEEL CHEMICAL CO , NIPPON STEEL CORP
发明人： IMAMURA SHINJI , KANEDA TSUTOMU
IPC分类号： B29C49/04 , B29C49/64 , B29L22/00
摘要： PROBLEM TO BE SOLVED: To partially control the wall thickness of a synthetic resin hollow molded product without leaving appearance inferiority to the inner and outer surfaces of the molded product. SOLUTION: The surfaces of cooled rolls 1, 1' are brought into contact with at least one surface part of the inside and outside of the parison 5 extruded from a die 4 to partially cool the contact parts with the rolls of the parison 5 and a mold 6 is closed to subject the parison to blow molding. The cooling roll 1 is arranged in at least one surface part of the inside and outside of the parison 5 extruded from the die in a freely contact state.

4. 发明专利

JPH07123883A FLOAT 失效
公开(公告)号：JPH07123883A
公开(公告)日：1995-05-16
申请号：JP27863693
申请日：1993-11-08
申请人： NIPPON STEEL CHEMICAL CO , NIPPON STEEL CORP
发明人： OTA AKIRA , IMAMURA SHINJI , KANEDA TSUTOMU , FURUKI SATORU
IPC分类号： A01K61/00 , A01K75/04 , B29C39/10 , B29C39/22 , B29C49/00 , B29D99/00 , B29D31/00
摘要： PURPOSE:To provide a float capable of reducing the wall thickness and weight and rationalizing the regulation in production without requiring the excessive improvement in variation and accuracy of the wall thickness and prevent the float from being removed from a raft by deformation and flowing out. CONSTITUTION:This float is used to float a raft for culturing on the sea surface and designed to prevent breakage by buckling in sinking the float into the sea according to the construction formed by installing a stretchable part in the interior of the float body or the body itself or a hollow pipe or hose so as to make the tip thereof always present in the sea, installing a valve in a part of the float in the undersurface of the float and making the internal pressure freely regulable, attaching a check valve to a part of the float and making the float internal pressure always near the maximum value in the history of the external pressure or raising the internal pressure of the float within the range of 1.01 to 2.0 times based on the atmospheric pressure.

5. 发明专利

JPH0691145A SEPARATING MEMBRANE 失效
公开(公告)号：JPH0691145A
公开(公告)日：1994-04-05
申请号：JP20478293
申请日：1993-07-27
申请人： NIPPON STEEL CORP , NIPPON STEEL CHEMICAL CO
发明人： TERAMOTO TAKEO , SUGIYAMA KAZUHISA , KAWASATO HIRONOBU , FURUKAWA MASAYA , KANEDA TSUTOMU , WATABE KAZUHIRO
IPC分类号： B01D71/48 , B01D71/50 , B01D71/52 , B01D71/56 , B01D71/64
摘要： PURPOSE:To obtain a separating membrane having excellent mechanical strength by forming a spongy structure over the whole of a membrane with a mixture of polymers selected among polyester, polyether, poly-carbonate, polyamide and polyimide each having a fluorenee skeleton. CONSTITUTION:This separating membrane is obtd. from a mixture of polymers selected among polyester, polyether, polycarbonate, poly amide and polyimide represented by formulae I-V, respectively. In the formulae I-V, each of Y1-Y4 is a divalent org. residue, Y5 is a tetravalent org. residue, X is a divalent org. residue and at leas part of X's is a residue represented by formula VI (where each of R1-R4 is H, 1-4C alkyl, etc.). The whole membrane practically has a spongy structure.

6. 发明专利

JPH0386221A POLYSULFONE LAMINATED MEMBRANE 失效
公开(公告)号：JPH0386221A
公开(公告)日：1991-04-11
申请号：JP22308889
申请日：1989-08-31
申请人： NIPPON STEEL CORP , NIPPON STEEL CHEMICAL CO
发明人： KAZAMA SHINGO , TERAMOTO TAKEO , KANEDA TSUTOMU , FURUKAWA MASAYA , SAKASHITA MASAO
IPC分类号： B01D71/68 , D01F6/00 , D01F6/76
摘要： PURPOSE:To obtain a polysulfone laminated membrane having a high rate of permeation of oxygen and high oxygen-nitrogen selectivity by forming a layer of soluble arom. polysulfone represented by a specified general formula as a gas selective active layer on a porous support having a specified thickness and a specified pore diameter. CONSTITUTION:A layer of soluble arom. polysulfone represented by formula I [where X is structural units represented by formula II (where each of R1-R4 is H, CH3 or C2H5) and Y is structural units represented by formula III (where each of R5 and R6 is H, Cl or NO2)] is formed as a gas selective active layer on a porous support having 10nm-1mum thickness and 1mum surface pore diameter to obtain a polysulfone laminated membrane having a high rate of permeation of oxygen, high oxygen-nitrogen selectivity, superior heat and chemical resistances and mechanical strength.

7. 发明专利

JPH0976335A BLOW MOLDING METHOD AND MOLD APPARATUS 失效
公开(公告)号：JPH0976335A
公开(公告)日：1997-03-25
申请号：JP23506195
申请日：1995-09-13
申请人： NIPPON STEEL CHEMICAL CO , NIPPON STEEL CORP
发明人： KANEDA TSUTOMU , IMAMURA SHINJI
IPC分类号： B29C49/04 , B29C49/48 , B29L22/00
摘要： PROBLEM TO BE SOLVED: To prevent thickness reduction by controlling the wall thickens distribution of a deep drawing part without damaging appearance by constituting a part of the inner wall surface of a mold of the film releasable from the mold and bringing a molten parison into contact with the film and subsequently partially moving the central part of the film from the inside to the outside. SOLUTION: A slide core 4 is preliminarily ejected to the predetermined position inside a mold so that the internal space of the mold 1 surrounded by the inner wall of a mold main body part 2 and a film 5 becomes smaller than the size of a hollow molded product. When the slide core 4 is allowed to retreat after all of parts of a parison come into contact with the film 5 or the inner wall surface of the mold, the film 5 is pressed to the inner wall surface of the mold while the parison 6 holds the contact state with the film 5 by the air pressure inside the parison and the shape of the internal space of the mold becomes same to that of the hollow molded product. By adjusting the ejection quantity of the preliminarily ejected slide core, a molded product of which the corner parts have desired wall thickness is obtained.

8. 发明专利

JPH06320609A ARTICLE MOLDED BY USING WASTE OF MULTI-LAYER RESIN MOLDED PIECE 失效
公开(公告)号：JPH06320609A
公开(公告)日：1994-11-22
申请号：JP11175693
申请日：1993-05-13
申请人： NIPPON STEEL CHEMICAL CO , NIPPON STEEL CORP
发明人： OTA AKIRA , IMAMURA SHINJI , KANEDA TSUTOMU
IPC分类号： A01K61/00 , B29B17/00 , B29C49/04 , B29C49/22 , B29K23/00 , B29K77/00 , B29L9/00 , B29L22/00 , B29L31/00
摘要： PURPOSE:To obtain a molded article superior in surface smoothness, wear resistance, and self-lubricating properties by blow molding the article by using a waste of a multi-layer resin blow molded piece for a car fuel tank, etc. CONSTITUTION:An article is blow molded by using a thermoplastic resin containing a material, obtained by regenerating a waste of a molded piece produced as a car fuel tank and containing a high-molecular high-density polyethylene (HMHDPE) and a polyamide(PA), and having an HMHDPE/PA weight ratio of 1/30 to 1/10. In addition, the ratio of the waste to the thermoplastic resin in use is not less than 70wt.%. A part substantially forming a spherical surface is not less than 50% of both end spherical parts. The radius of the spherical surface is 1 to 3 times larger than the radius of a cylindrical part.

9. 发明专利

JP2000102964A MOLDED ITEM WHEREIN WASTE MATERIAL OF MUTILAYERED RESIN MOLDED ITEM IS UTILIZED 失效
公开(公告)号：JP2000102964A
公开(公告)日：2000-04-11
申请号：JP29866799
申请日：1999-10-20
申请人： NIPPON STEEL CHEMICAL CO , NIPPON STEEL CORP
发明人： OTA AKIRA , IMAMURA SHINJI , KANEDA TSUTOMU
IPC分类号： A01K61/00 , B29C49/04 , B29L22/00 , B29L31/00
摘要： PROBLEM TO BE SOLVED: To provide a molded item which is manufactured by blow-molding a reprocessed resin of a multilayered parison only, and provide the application of the molded item. SOLUTION: Waste materials of a multilayered blow-molded item which is produced as a fuel tank for automobile and contains a high molecular high density polyethylene(HMHDPE) and a polyamide(PA) are reprocessed to provide a reprocessed resin. A thermoplastic resin, wherein 70 wt.% or more of the reprocessed resin is contained and the weight percent of the PA component with respect to the HMHDPE component is 1/30-1/10, is merely used to obtain the blow-molded item by a blow molding.

10. 发明专利

JPH09295317A TEMPERATURE CONDITIONING APPARATUS FOR PLASTIC MOLDING MOLD AND METHOD THEREFOR 失效
公开(公告)号：JPH09295317A
公开(公告)日：1997-11-18
申请号：JP11091596
申请日：1996-05-01
申请人： NIPPON STEEL CHEMICAL CO , NIPPON STEEL CORP
发明人： KANEDA TSUTOMU , IMAMURA SHINJI
IPC分类号： B29C33/04 , B29C41/46 , B29C45/72 , B29C49/48
摘要： PROBLEM TO BE SOLVED: To change over a heating medium easily in a short time with cross over prevented even when water of especially high heat transfer efficiency is used as the heating medium and to curtail the total molding cycle remarkably. SOLUTION: In a mold temperature conditioning apparatus, a high temperature heating medium supply apparatus 2 for supplying a high temperature heating medium (hereafter designated as A) and a low temperature heating medium supply apparatus 3 for supplying a low temperature heating medium (hereafter designated as B) are arranged independently, A and B supplied respectively are made to flow alternately into a line for supplying the heating medium into a mold 1 by the change-over operation of valves 15-22 to change mold temperature. Closed type heating medium storage tanks 5, 6 are installed in the mold bypass line of A and the mold bypass line of B respectively, and a pressure control means by pressurized gas for controlling the pressure of the line for supplying the heating medium into the mold 1 at a prescribed value is provided in each of the tanks 5, 6. In this way, the cross over of the high temperature and mold temperature heating media is prevented so that a molding cycle can be curtailed.

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