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公开(公告)号：JP2003112368A
公开(公告)日：2003-04-15
申请号：JP2002047749
申请日：2002-02-25
Applicant: BRIDGESTONE CORP
Inventor： INO FUMITAKA , IWASAKI SHINICHI
IPC: E02D17/18 , B29C55/26 , B29D28/00 , B29K101/00 , B29L23/00
Abstract: PROBLEM TO BE SOLVED: To improve a method for producing a resin net by biaxially stretching a cylindrically extruded resin net in the axial (longitudinal) direction and in the radial (circumferential) direction. SOLUTION: The method for producing the biaxially oriented resin net includes the first process for obtaining a lengthy ended cylindrical body of a resin having lots of holes arranged regularly in the circumferential direction and in the longitudinal direction, the second process for leading the cylindrical body to a high temperature area, the third process for inserting a main core expanding from this side toward the tip side into the cylindrical body in the high temperature area, and the fourth process in which the cylindrical body is pulled to the tip side and stretched in the longitudinal direction and in the width direction while being contacted with the surface of the main core.
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公开(公告)号：JP2002172693A
公开(公告)日：2002-06-18
申请号：JP2000368407
申请日：2000-12-04
Applicant: BRIDGESTONE CORP
Inventor： ISHINO YUICHI , YAMADA KOTARO , IWASAKI SHINICHI , KIKUTANI YUUJI
Abstract: PROBLEM TO BE SOLVED: To provide a polyethylene monoaxially stretched product which shows outstanding creep properties and the best suitability for a ground reinforcement such as banking in the civil engineering field. SOLUTION: The polyethylene monoaxially stretched product has a longitudinal strand part and a crosswise strand part which are connected in a lattice fashion through a crossing part. In case the minimum value of a measured intensity is given as a base intensity B and the difference in intensity between the measured peak intensity and the base intensity B is given as A through X-ray diffraction at a reflective azimuth angle to the crossing part (110), A/(A+B) is 0.5 or more.
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公开(公告)号：JP2001219455A
公开(公告)日：2001-08-14
申请号：JP2000181356
申请日：2000-06-16
Applicant: BRIDGESTONE CORP
Inventor： NAKAZAWA KAZUMA , IWASAKI SHINICHI
Abstract: PROBLEM TO BE SOLVED: To provide a synthetic resin molded object such as a bathtub excellent in work environment, generating no defective article even if dust adheres to the surface of a mold, hard to bond a contaminant and easy to remove the contaminant and long in life and a method of manufacturing the same. SOLUTION: The synthetic resin molded object consists of an inner surface layer material comprising a transparent sheet and an outer surface layer material formed by injecting a heated molten thermoplastic resin on one surface side of the inner surface layer material and subjecting the same to compression molding in contact with one surface of the inner surface layer material.
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公开(公告)号：JPH09254616A
公开(公告)日：1997-09-30
申请号：JP9323296
申请日：1996-03-23
Applicant: BRIDGESTONE CORP
Inventor： IZUMIMOTO TAKAHARU , IWASAKI SHINICHI
Abstract: PROBLEM TO BE SOLVED: To shorten manufacturing hours and improve characteristics of abrasion resistance by using as a rubber chain, a urethane resin material in which a three dimensional cross-linked structure can be introduced into a matrix by utilizing temperature at the time of formation after being formed in a mold and has a specific JIS A hardness. SOLUTION: A rubber chain wound around the periphery of a tire comprises a urethan resin which is thermoplastic at the time of melting forming, and after hot forming, has a molecular structure in which a three dimensional cross- linked structure is introduced into a matrix. The urethan resin has a JIS A hardness of from 50 to 95. Hereby, the three dimensional cross-linked structure exits in the urethane matrix, and even when travelled by mounting a tire antislipping tool on the periphery of the tire on dry and wet road surfaces, a rubber chain may not be easily extended, and even through it is used for a long time, dimensional change is diminished and abrasion resistance can be improved.
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公开(公告)号：JPH09170684A
公开(公告)日：1997-06-30
申请号：JP33058095
申请日：1995-12-19
Applicant: BRIDGESTONE CORP
Inventor： IWASAKI SHINICHI , IZUMIMOTO TAKAHARU
IPC: F16L9/12 , B32B1/08 , B32B27/00 , B32B27/18 , B32B27/32 , C08K5/13 , C08K5/16 , C08L23/20 , C08L23/26 , C08L51/06
Abstract: PROBLEM TO BE SOLVED: To suppress the amount of an oxidizing deterioration preventive agent in the innermost layer at the minimum, and to improve the chloride water resistance, by specifying the content of the oxidizing deterioration preventive agent in the outer layer, to the content in the innermost layer. SOLUTION: This multilayer resin pipe consists of two or more layers, and the content of an oxidizing deterioration preventive agent of the outer layer is made 1.5 times of the content of the innermost layer. The resin is at least one resin selected from poly-1-butene and silane bridging polyethylene, and the oxidizing deterioration preventive agent is at least one compound selected from a group which consists of hidered phenol system compounds and hindered amine system compounds. The service life of the pipe is determined by the deterioration of the innermost layer, and in order to prevent the deterioration, the maximum of oxidizing deterioration preventive agent is necessary to the innermost layer. Since the amount of the oxidizing deterioration preventive agent in the innermost layer is reduced gradually in the pipe using condition, the oxidizing deterioration preventive agent mixed at a high density to the outer layer is supplied gradually to the innermost layer, as the reduced amount, for a long period. By such a way, the chloride water resistance can be improved.
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Patent Agency Ranking
公开(公告)号：JPH05318621A
公开(公告)日：1993-12-03
申请号：JP15116792
申请日：1992-05-20
Applicant: BRIDGESTONE CORP
Inventor： IWASAKI SHINICHI , TATENO YUKIKO , MOJI KOUSHIROU
Abstract: PURPOSE:To obtain a rubber product remarkably improved in on-ice friction performance, esp. a studless tire having an on-ice friction performance substantially equal to a spike tire, by a method wherein the surface roughness of a soft product, such as a rubber product, is accurately grasped as well as quantitatively measured for finding a true roughness exhibiting a superior on-ice friction performance. CONSTITUTION:The surface of a rubber product is measured by an electron microscope electron-reflecting surface roughness tester ensuring a detecting from four directions. The frequencies of the obtained respective signal amounts are analyzed. In this manner, a surface roughness corresponding to an actural unevenness is found. The rubber product has a roughness index P of 2 or more in a roughness wavelength range of 5-90mum.
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公开(公告)号：JPH0549841B2
公开(公告)日：1993-07-27
申请号：JP3417685
申请日：1985-02-22
Applicant: BRIDGESTONE CORP
Inventor： SAKAYORI KYOSHI , IWASAKI SHINICHI , ISHIDA YOZO
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公开(公告)号：JPH04218406A
公开(公告)日：1992-08-10
申请号：JP8457491
申请日：1991-03-26
Applicant: BRIDGESTONE CORP
Inventor： ONOZATO TSUTOMU , MORIMOTO YOSHIYUKI , IWAFUNE SEIICHIRO , IWASAKI SHINICHI , MOJI KOUSHIROU , KATSUTA TAKASHI
Abstract: PURPOSE:To enhance the friction characteristic, abrasion resistance gripping performance, and water exhausting performance in wet-on-ice condition of a pneumatic tire, equipped with a tread of uneven structure, without impairing maneuverability and durability through summer time services. CONSTITUTION:Tread rubber is made in a rubber compound of uneven structure embodied as in an ocean island consisting of a resin domain part and rubber matrix part. The resin domain part exerts reinforcing function for the rubber matrix part through the interactive effect either chemically or physically.
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公开(公告)号：JPH01229113A
公开(公告)日：1989-09-12
申请号：JP5408988
申请日：1988-03-08
Applicant: BRIDGESTONE CORP
Inventor： IWASAKI SHINICHI , SAKAYORI KIYOSHI , MOROOKA TAKUYA
IPC: F16C11/04
Abstract: PURPOSE:To facilitate fitting/exchanging of a cylindrical body and to aim at its utilization as a roller by fitting a split cylinder having a hole the diameter of which is smaller than that of a head and larger than that of a shaft, to the shaft of a shaft body with the head the top of which is fixed thereto, and fitting a cylindrical body having a hole the diameter of which is larger than that of the head to the split cylinder. CONSTITUTION:A split cylinder 3 is fitted to the shaft 1B of a shaft body 1 with a head the top end of which is fixed to a base 2 and a cylindrical body 4 is fitted thereto. Hereupon, the relation among the diameters a, b of the head 1A, and the shaft 1B, the diameters c, d of the holes of the split cylinder 3 and the cylinder body 4 is to be b
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公开(公告)号：JPH01222948A
公开(公告)日：1989-09-06
申请号：JP4926388
申请日：1988-03-02
Applicant: BRIDGESTONE CORP
Inventor： IWASAKI SHINICHI
IPC: B32B15/085 , B32B15/08
Abstract: PURPOSE:To easily bond olefin resin and metal in a short time, by laminating a polymer alloy compound onto an adhesive applied on metal, laminating an olefin resin mold onto said polymer alloy compound, and then heating and pressuring the same. CONSTITUTION:After oil and dust etc. are removed from the surface of a metal 1, a surface coating agent is applied on the metal. Further, an adhesive agent 2 is applied. A kneaded substance of a mixture of rubber and polyethylene of super high molecular weight, namely, a polymer alloy compound 3 is laminated on the adhesive agent 2 for use in bonding the metal 1 and an olefin resin mold 4. The polymer alloy compound 3 is obtained by mixing and kneading rubber and polyethylene of super high molecular weight in the presence of a radical starting agent and a cross linking agent. After the polymer alloy compound 3 is laminated on the metal 1 through the adhesive agent 2, the olefin resin mold 4 such as polyethylene mold or the like is laminated thereon, thereby forming a laminated member. By heating and pressuring the laminated member, the olefin resin mold 4 and the metal 1 are strongly bonded each other through the polymer alloy compound 3.
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