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公开(公告)号：JP2001080310A
公开(公告)日：2001-03-27
申请号：JP26342999
申请日：1999-09-17
Applicant: BRIDGESTONE CORP
Inventor： MISHIMA HISAMI
IPC: B60C7/10
Abstract: PROBLEM TO BE SOLVED: To prevent a tire blowout without any deterioration of basic tire performance by filling a tube with a foam body having closed-cell foams in a hollow part surrounded by the tire inner circumferential face and a rim. SOLUTION: This tire assembly is constructed by mounting a tire for a motorcycle to an adaptable rim 2 and filling a substantially toroidal tube 4 with a foam body having closed-cell foams in a hollow part 3 surrounded by the tire inner circumferential face and the rim 2. In the foam body having closed-cell foams, individual foams are surrounded by partition walls independently of each other. As the foam body, a composition consisting of rubber, a butyl group rubber desirably, carbon black, a plasticizer, a foaming agent, tackifier, a cross linking agent and the like is effective. In addition, a foaming multiplication factor of the foam body is restricted within the range of about 500-1000%. In this way, a tire blowout can be prevented.
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公开(公告)号：JPH0531724A
公开(公告)日：1993-02-09
申请号：JP21323791
申请日：1991-07-31
Applicant: BRIDGESTONE CORP
Inventor： HASHIMOTO TAKATSUGU , MISHIMA HISAMI
Abstract: PURPOSE:To mold and vulcanize a rubber product such as a tire with good workability without generating molding inferiority by using vulcanizing bladder excellent in mechanical properties, physical properties such as hot water resistance and chemical properties and having good durability and releasability. CONSTITUTION:In the molding and vulcanization of a rubber product using a vulcanizing bladder, the vulcanizing bladder is formed so as to have a multilayered structure composed of a plurality of layers and has a layer (A) composed of a rubber composition based on org. rubber on the innermost side thereof and a layer (B) composed of a rubber composition whose release stress with the rubber product is 0.5kg/cm or less on the outermost side thereof.
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公开(公告)号：JPH06339927A
公开(公告)日：1994-12-13
申请号：JP15264493
申请日：1993-06-01
Applicant: BRIDGESTONE CORP
Inventor： HASHIMOTO TAKATSUGU , MISHIMA HISAMI
Abstract: PURPOSE:To provide a bladder suitable for molding and vulcanization and requiring no release agent and to mold and vulcanize a rubber product using the bladder. CONSTITUTION:A rubber product is molded by using a bladder having at least two release lubricating layers provided to the surface thereof and characterized by that a room temp. curable silicone layer having the adhesiveness with bladder rubber is applied to the innermost layer of the release lubricating layers and a condensation type silicone resin layer is formed to the outermost layer thereof.
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公开(公告)号：JPH05208454A
公开(公告)日：1993-08-20
申请号：JP24983892
申请日：1992-09-18
Applicant: BRIDGESTONE CORP
Inventor： ONIKI TORU , YODA NAOHISA , HASHIMOTO TAKATSUGU , MISHIMA HISAMI
Abstract: PURPOSE:To prevent the driving force of a tire from lowering, mud from adhering to the tire and, especially, the mud from being carried away when a vehicle leaves a paddy field by a method wherein the whole surface of grooves, which partition tread land parts, and the whole surface of the shoulder regions adjacent to the grooves are processed so as to be highly water repellent. CONSTITUTION:Highly water repellent coatings 2 are provided on the whole surface of grooves, which partition tread land parts on a tread T, the whole surface of lugs L, and the whole surface of the shoulder regions Sh adjacent to the lugs, the skid space regions Sk of a case body and side walls S. As the highly water repellent polymer used for the coating 2, silicone resin, fluoroplastic and the like are employed. Or polypropylene or the like can be used as substitute. In short, any material having water repellency, which makes the contact angle with ion-exchanged water measured at 35 deg.C by drop surface profile method at least 80 deg. or more, may well be used.
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