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公开(公告)号：JP2001219444A
公开(公告)日：2001-08-14
申请号：JP2000182531
申请日：2000-06-19
Applicant: BRIDGESTONE CORP
Inventor： NAKAZAWA KAZUMA , IWASAKI SHINICHI
Abstract: PROBLEM TO BE SOLVED: To provide a synthetic resin molding such as a bathtub of a long service life and its production method which is excellent in working environment and low in fraction defective in producing. SOLUTION: The synthetic resin molding comprises an inner surface layer material of a transparent resin sheet and an outer surface layer material which is produced by injecting a colored/decorated molten thermoplastic resin on the back side of the inner surface layer material and compression-molding the resin while being contacted with the inner surface layer material. 1: inner surface layer material, 3: male mold (movable mold) of injection compression molding machine, 4: decorated thermoplastic resin, 5: female mold (fixed mold) of injection compression molding machine, 6: gate of injection compression molding machine.
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公开(公告)号：JP2001030366A
公开(公告)日：2001-02-06
申请号：JP20698799
申请日：1999-07-22
Applicant: BRIDGESTONE CORP
Inventor： YAMADA KOTARO , INO FUMITAKA , IWASAKI SHINICHI
IPC: E02D3/00 , B29C55/04 , B29D28/00 , B29K105/04 , E02D17/18
Abstract: PROBLEM TO BE SOLVED: To enable sufficient stretching by alternately forming drilled holes and projections to a long resin plate in the longitudinal direction thereof by press processing and providing flexibility on the side of projections. SOLUTION: In a first process, drilled holes 2 are formed to a long resin plate not only at a predetermined interval in the longitudinal direction of the resin plate, but also at a predetermined interval in the lateral direction thereof, so as to have a rectangular shape in the longitudinal direction of the resin plate by drilling the resin plate from above and below by press machines 11. Columnar projections 3 are formed to the central parts of the resin parts 1b between the drilled holes 2 by press processing so as to form the cavities to the rear surface of the resin plate corresponding to the projections. In a second process, hot water 12 is held to 90 deg.C in consideration of tensile force at a time of stretching, the surfaces of front and rear rubber rolls 13, 14 in a third process are set to a hardness of 55 deg. so as to have flexibility, and the resin plate is stretched by five times by these rubber rolls 13, 14 to obtain a resin net 20.
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公开(公告)号：JP2000210945A
公开(公告)日：2000-08-02
申请号：JP1919099
申请日：1999-01-28
Applicant: BRIDGESTONE CORP
Inventor： NAKAZAWA KAZUMA , YAMAGUCHI ICHIRO , IWASAKI SHINICHI
Abstract: PROBLEM TO BE SOLVED: To obtain a decoration-rich tile by setting a film with a desired pattern on the face of a bottom force of a mold and injecting a resin into a cavity under this state to mold the tile and at the same time, imparting a desired pattern on the first surface of the tile, while a sealing material layer is formed on the second surface. SOLUTION: When a wall decoration tile 1 for decorating a wall face is molded, first a bottom force 11 of a mold having a face 11a for forming the first surface side of the tile 1 and a top force 12 having a face 12a for forming the second surface of the tile 1 are assembled together. Next, a transfer film 13 is set on the face 11a of the bottom force 11, and an ABS resin or a resin containing an antibacterial agent and/or an antifungal agent is packed into a cavity 14 formed by the faces 11a, 12a. Thus the tile 1 with a pattern formed on the surface is molded. After that, an acrylic resin is applied as a coat on the surface of the tile 1 and is crosslinked by UV emission to form a coated face 8 and further, a silicone sealing material layer 9 is applied and formed on the second surface of the tile 1.
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公开(公告)号：JP2000144702A
公开(公告)日：2000-05-26
申请号：JP31522698
申请日：1998-11-06
Applicant: BRIDGESTONE CORP
Inventor： YAMADA KOTARO , INO FUMITAKA , IWASAKI SHINICHI
IPC: E02D3/00
Abstract: PROBLEM TO BE SOLVED: To increase the through soil pull-out resistance of a resin-reinforced net by boring crosswise and vertically arranged hole sections, forming projecting sections to non-boring sections by press working and extending the projecting sections in the vertical direction. SOLUTION: Rectangular holes are disposed and bored crosswise and vertically to a sheet made of polyethylene. Projections are formed simultaneously to non-boring sections held by the boring-section holes by press working at a right angle in the extending direction. In such press working, projecting sections and recessed sections are formed previously between cutters boring the rectangular holes in top and bottom forces with the cutters, and the sheet is deformed plastically by the projecting sections and the recessed sections and the projections 4 are formed and elongated in the longitudinal direction of the rectangular holes, and the resin net 15 for reinforcing a ground is obtained. The holes 5 are composed of the opposed extending sections 5a and non- extending sections. The projections 4 are shaped to the non-extending sections as they are. Accordingly, through soil pull-out resistance is increased extremely, and the projections can be formed effectively on the surface of the resin net being difficult to be bonded in addition to the increase of the pull-out resistance.
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公开(公告)号：JPH1193108A
公开(公告)日：1999-04-06
申请号：JP27519597
申请日：1997-09-22
Applicant: BRIDGESTONE CORP
Inventor： IZUMIMOTO TAKAHARU , IWASAKI SHINICHI , KURIKI MINORU
Abstract: PROBLEM TO BE SOLVED: To give a flexible property to a pipe and facilitate a bending processing by forming a male mold at one end of the pipe and forming a female connectable part at other end of the pipe, by use of a pipe base body having connecting faces at both breadthwise ends and connecting a number of openings in the longitudinal direction and further having a semi-circular shape in the breadthwise section. SOLUTION: Belt-shaped parts 11 are formed at both breadthwise ends of a drain pipe base body and semi-circular arches 12 are formed at every certain pitch. The each distance P between the arches is a gap for drain. Flanges 14 extending outward from the belt-shaped parts 11 are formed as connection faces. Pins 15 made a little bit thicker at the front end are erected at the drain pipe side and holes 16 in which the pins 15 are fitted are formed in the flange 14. Ribs 17 are formed in the belt-shaped parts 11 between the flanges 14 to fit the belt-shaped parts 11 when the drain pipes are connected. A male mold 18 is formed at one end of the drain pipe 10 and a female mold 19 is formed at the other end. These are fitted to each other one after another when necessary to form the long drain pipe 10.
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Patent Agency Ranking
公开(公告)号：JPH09158105A
公开(公告)日：1997-06-17
申请号：JP31814495
申请日：1995-12-06
Applicant: BRIDGESTONE CORP
Inventor： IWASAKI SHINICHI , IZUMIMOTO TAKAHARU
Abstract: PROBLEM TO BE SOLVED: To provide a rubber plate for a road having excellent slip resisting performance even during freezing of a road in a winter season and during a wet time and to provide excellent performance by using the rubber plate for a road. SOLUTION: Fine ribs 12 are formed on a surface. It is preferable that the fine rib has the width of a top being 5μm-2.0mm, a height of 5μm-3.0mm, and a distance between the adjoining ribs being 5μm-1.5mm. It is desirable that the arrangement direction of the fine rib parallels the running direction of a vehicle. Further, it is preferable that a rubber material of which a rubber plate is formed is a fiber composite material wherein short fibers are mixed in a rubber matrix or a foamed rubber material and a foamed fiber composite material.
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公开(公告)号：JPH07186633A
公开(公告)日：1995-07-25
申请号：JP3369394
申请日：1994-03-03
Applicant: BRIDGESTONE CORP
Inventor： ITSUKIDA TAKESHI , TAKAMATSU TAKESHI , YAMAGUCHI KOJIRO , IWASAKI SHINICHI , KOJIMA HIROSHI , IZUMIMOTO TAKAHARU , MOJI KOUSHIROU
Abstract: PURPOSE:To obtain the excellent brake performance and the drive performance on an ice snow road or a wet road surface, by arranging fine ribs having the angle formed between the longitudinal direction and the tire circumferential direction in a specific range in an arraged state in the tire width direction, in the grounded land part of a tread. CONSTITUTION:On the tread 12 of a pneumatic time 10 a circumferential direction groove 14 which extends in a zigzag form in the tire circumferential direction is farmed on a tire equator plane CL, and a circumferential direction groove 16 which extends in a straigt-line form in the tire circumferential direction is formed between the circumferential direction grooves 14. Further, on the tread 12, a plurality of lateral grooves 18 which extend in the tire width direction are formed in a prescribed interval, and a plurality of blocks 20 are dividedly formed on the tread 12. In this case, a fine rib 26 having a nearly rectangular shaped section is formed on the tread surface in each block 2. The fine rib 26 is formed within a range of the angle formed between the longtitudinal direction and the tire circumferential direction of 0-40 in the grounded part of the tread, and the width of the top part is set to 5mum-2.0mm, height is set to 5mum-1.0mm, and the interval between ths contiguous fine rib is set to 5mum-1.5mm.
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公开(公告)号：JPH0476052A
公开(公告)日：1992-03-10
申请号：JP18860990
申请日：1990-07-17
Applicant: BRIDGESTONE CORP
Inventor： IWASAKI SHINICHI , KATSUTA TAKASHI , MOJI KOUSHIROU , MUTO YOSHIHIKO
Abstract: PURPOSE:To improve abrasion resistance and persistence of staining resistance in the use as a belt for an automatic copy sending unit of a copying machine by compounding a thermoplastic polyurethane with a specific abrasion resistance improver and a staining preventive. CONSTITUTION:In a polyurethane compsn. contg. an abrasion resistance improver and a staining preventive at the surface and in the inside of the compsn., a polyolefin compsn. having a mol.wt. of 500-12000 as the abrasion resistance improver and a mixture of a compd. of formula 1 (wherein R is 8-22C alkyl or alkenyl) with a compd. of the formula R 0H (wherein R is 8-22C alkyl or alkenyl) as the staining preventive are contained. As the polyolefin compsn., a polyethylene compsn. is pref. and used in an amt. of 0.2-6 phr. The staining preventive is used in an amt. of 0.5-6 phr and in an amt. of 40-60 % of the polyolefin compsn.
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公开(公告)号：JPH02294360A
公开(公告)日：1990-12-05
申请号：JP11561989
申请日：1989-05-09
Applicant: BRIDGESTONE CORP
Inventor： IWASAKI SHINICHI , MUTO YOSHIHIKO
Abstract: PURPOSE:To obtain a urethane composition having excellent abrasion resistance and suitable as a belt for an automatic original feeding apparatus of a copying machine by compounding a specific amount of a polyolefin composition having a specific molecular weight as an agent for improving abrasion resistance. CONSTITUTION:A urethane composition is compounded with 0.2-6phr (preferably 0.5-3phr) of a polyolefin composition having a molecular weight of 500-12,000 (preferably 1,500-10,000).
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公开(公告)号：JPH02251563A
公开(公告)日：1990-10-09
申请号：JP7260089
申请日：1989-03-24
Applicant: BRIDGESTONE CORP
Inventor： IWASAKI SHINICHI , MUTO YOSHIHIKO
Abstract: PURPOSE:To obtain a composition having improved durability of nonstaining properties in using for belt of automatic original feeder of copying machine and excellent processing properties by adding a specific stainproofing agent to a thermoplastic urethane. CONSTITUTION:A thermoplastic urethane is blended with a mixture of compounds shown by formula I and formula II (R is 8 to 22C alkyl group or alkenyl group) as a stainproofing agent. The amount of the stainproofing agent added is 0.5 to 6Phr, preferably 1.7 to 2.5Phr. The blending ratio of the compounds shown by formula I and formula II is preferably 40 to 60% alcohol compound based on the amine compound.
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