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公开(公告)号：FR2662638B1
公开(公告)日：1997-09-05
申请号：FR9106381
申请日：1991-05-28
Applicant: NOK CORP
Inventor： YOSHIDA MINORU , NAKAMIZO MASATOSHI
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公开(公告)号：DE4117411A1
公开(公告)日：1991-12-05
申请号：DE4117411
申请日：1991-05-28
Applicant: NOK CORP
Inventor： YOSHIDA MINORU , NAKAMIZO MASATOSHI
Abstract: A cold-resistant, gas-impermeable, laminated, 2-dimensional body (I) is claimed, contg. a PV-alcohol resin layer (PVAL layer A) contg. 15-50 wt.% polyol plasticiser (II), with a rubber layer (B) laminated on at least one side. Pref. a vapour- and plasticiser-impermeable resin layer (C) is laminated between (A) and (B) and, pref., a metal coating (D) is laminated onto the side of (C) which faces towards (A); (A) consists of partly or completely hydrolysed PVAC or hydrolysed EVA copolymer; (II) is glycerol, ethylene glycol or propylene glycol, and (I) contains 20-40 wt.% (II); (B) consists of nitrile, butyl, chloroprene, or styrene rubber; layer thicknesses are 50-20000 (pref. 300-1500) microns (A), 0.2-2 mm (B) and 5-50 microns (C); (C) consists of PE, PP, PVF, PVDF, TFE/HFP copolymer, or unplasticised, hydrolysed EVA copolymer, pref. a fluoro-resin or PVAL; (D) is a layer of Al; rubber and resin layers are laminated by vulcanising, using an adhesive formulation (III) which is vulcanisable with rubber; (C) is laminated after corona discharge treatment on both sides; (A) is bonded with an isocyanate adhesive. USE/ADVANTAGES - (I) is useful for the prodn. of membranes for use in storage elements (e.g. contg. brake fluid).
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公开(公告)号：EP1302672A4
公开(公告)日：2004-12-15
申请号：EP01948044
申请日：2001-07-17
Applicant: NOK CORP
Inventor： YOSHIHARA HISAO , KURITA YOSHIYUKI , SASAKI KENNJI , YOSHIDA MINORU
CPC classification number: B32B27/34 , B32B1/08 , B32B25/08 , B32B25/18 , B32B2250/40 , B32B2377/00 , B32B2597/00 , F15B1/12 , F15B2201/205 , F15B2201/3151 , F15B2201/3155 , F15B2201/3156 , F15B2201/32 , F15B2201/41 , F15B2201/415 , F15B2201/435
Abstract: An accumulator installed in the piping of equipment and temporarily accumulating a pressure in a pipe flow path or absorbing, by a pump, the pulsation of a fluid pressure generating in the piping, wherein a bladder (3) is formed in a laminated structure having, for example, a center elastic layer (321), gas shielding layers (322) on the outside thereof, external elastic layers (323) on the outside of the gas shielding layers and the center elastic layer (321), gas shielding layers (322), and external elastic layers (323) are formed of polyamide resin, and the gas shielding layers (322) are formed so that the bending elastic modulus thereof is higher than the bending elastic moduli of the center elastic layers (321) and external elastic layers (323), whereby the durability of the bladder (3) against a repeated bending and stretching operation in the low temperature environment of 0 DEG or below can be increased and the volume of cushion gas in a gas chamber can be effectively prevented from decreasing.
Abstract translation: 在设置在设备的管道中的蓄能器中，以便临时累积管道流道内的压力或通过泵等吸收管道内产生的流体压力的脉动，以提高耐久性 气囊（3）在不高于0℃的低温环境下反复进行弯曲和拉伸运动，有效地防止了气室中的缓冲气体的减少，气囊（3）具有层压结构， 由中心弹性层（321），其外侧的气体屏蔽层（322）和外侧的外侧弹性层（323）构成，中心弹性层（321），气体屏蔽层 322）和外弹性层（323）由聚酰胺树脂制成，并且气体屏蔽层（322）具有比中心弹性层（321）和外弹性层（323）高的弯曲弹性模量， 。
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公开(公告)号：AU6953601A
公开(公告)日：2002-01-30
申请号：AU6953601
申请日：2001-07-17
Applicant: NOK CORP
Inventor： YOSHIHARA HISAO , KURITA YOSHIYUKI , SASAKI KENNJI , YOSHIDA MINORU
Abstract: In an accumulator which is provided in a pipe of an equipment so as to temporarily accumulate a pressure within a piping flow passage or absorb a pulsation of a fluid pressure generated within the pipe by a pump or the like, in order to improve a durability against repeated bending and stretching motions of a bladder (3) under a low temperature environment not more than 0 DEG C, and effectively prevent a cushion gas in a gas chamber from being reduced, the bladder (3) has a laminated structure, for example, constituted of a center elastic layer (321), a gas shielding layer (322) in an outer side thereof and an outer elastic layer (323) in a further outer side thereof, the center elastic layer (321), the gas shielding layer (322) and the outer elastic layer (323) are made of a polyamide resin, and the gas shielding layer (322) has a module of bending elasticity higher than that of the center elastic layer (321) and the outer elastic layer (323).
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Patent Agency Ranking
公开(公告)号：JPH07229501A
公开(公告)日：1995-08-29
申请号：JP10019294
申请日：1994-05-13
Applicant: NOK CORP
Inventor： YOSHIDA MINORU , SASAKI KENJI
Abstract: PURPOSE:To prevents occurrence of infiltration of sealed gas, leakage thereof, and buckling deformation of bellows by dividing a space inside a pressure vessel into a gas chamber and a liquid chamber by means of the bellows, forming the bellows of a gas interruption layer and elastic soft layers, and forming the elastic soft layer which has elasticity not more than a specified value on the side of the gas chamber. CONSTITUTION:Resin bellows 3 are extendably arranged inside an accumulator chamber 6 surrounded by a shell 1 and an end plate 2. Space is divided into a liquid chamber 4 formed inside the bellows 3 and a gas chamber 5 surrounded by the bellows 3 and the shell 1. In the bellows 3, a gas interruption layer 7 made of material having excellent gas interruption performance is sandwiched by elastic soft layers 8 made of material having low elastic ratio and high elastic deformation limit. The gas interruption layer 7 prevents gas sealed in the gas chamber 5 from passing the bellows 3 for infiltration to the liquid chamber 4. The elastic soft layer 8 has the elastic ratio not more than 300kgf/ mm under a temperature environment to be used. The layer 8 softens shearing stress to be applied to the gas interruption layer 7 having less softness, and prevents the bellows 3 from buckling and deforming.
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公开(公告)号：JPH04348180A
公开(公告)日：1992-12-03
申请号：JP17605491
申请日：1991-06-20
Applicant: NOK CORP
Inventor： MURAI TAKASHI , YOSHIDA MINORU
IPC: C09J115/02 , C09J123/28 , C09J123/34 , C09J161/06 , C09J161/10 , C09J163/00 , C09J163/04
Abstract: PURPOSE:To provide a vulcanizable adhesive compound having excellent heat- resistance, chemical resistance, oil-resistance, etc., and useful for the bonding of a rubber and a molded plastic article or various substrate such as metal plate. CONSTITUTION:An adherend such as a film and a mild steel plate is coated with an organic solvent solution of a novolak epoxy resin, a novolak phenolic resin, a curing agent (selected from imidazole compound, Lewis acid amine complex and acid hydrazide) and a chlorinated butyl rubber. The applied adhesive layer is baked and a rubber sheet is bonded to the adhesive layer by vulcanization.
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公开(公告)号：JPH04247940A
公开(公告)日：1992-09-03
申请号：JP2557491
申请日：1991-01-25
Applicant: NOK CORP
Inventor： YOSHIDA MINORU , MURAI TAKASHI
Abstract: PURPOSE:To improve the adhesion against polar oil liquid or the like by laminat ing together a PVA film and an unvulcanized rubber sheet acetalized by unsatu rated aldehyde. CONSTITUTION:On an acetalized PVA film obtained as approximately 3-30 equivalent % mol. of acetalization degree by unsaturated aldehyde such as crotonaldehyde and acrolein, vulcanizing agent blended diene rubber or butyl rubber is applied as an organic solvent solution of the unvulcanized rubber and then dried, and thereafter an unvulcanized rubber sheet is superimposed thereon for effecting vulcanizing adhesion. The unvulcanized rubber employed herein for respectively forming the organic solvent solution and sheet is preferable to be the same kind in general, however, another kind is available if it has a co-bridging property.
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公开(公告)号：JPH02270552A
公开(公告)日：1990-11-05
申请号：JP9423289
申请日：1989-04-13
Applicant: NOK CORP
Inventor： YOSHIDA MINORU
Abstract: PURPOSE:To enhance the low-temp. characteristics by laminating a fluororesin film on at least single side of a PVA-based resin with a polyol-based plasticizer added thereto. CONSTITUTION:A PVA-based laminate film is constituted by laminating a fluororesin film on at least single side of a PVA-based resin film with a polyol- based plasticizer added thereto. As the PVA-based resin film, the film is utilized which is made of the completely saponified material or the partially saponified material of polyvinyl acetate and the saponified material of an ethylene-vinyl acetate copolymer. Polyol such as glycerin, ethylen glycoland propylene glycol is added to the film at about 1 - 20wt.%. As the fluororesin film to be laminated, the film made of vinyl fluoride-based resin and vinylidene fluoride-based resin is utilized. These films are utilized at thickness of about 5 - 100mum and about 15 - 50mum as a protective layer. The PVA-based laminated film inhibits evaporation of the plasticizer due to heating experience and the low-temp. characteristics, especially elongation and modulus, etc., are remarkably enhanced.
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公开(公告)号：JPH01206307A
公开(公告)日：1989-08-18
申请号：JP3088488
申请日：1988-02-15
Applicant: NOK CORP
Inventor： NAKAGOME SEIJI , YOSHIDA MINORU , SASAKI YASUYORI
IPC: G02B6/44
Abstract: PURPOSE:To improve the flexibility and to thin wall thickness of an outside covered wire by providing the outside covered layer of a rubber-like elastic body on the surface of a core material and a clad material consisting of a rubber-like elastic body. CONSTITUTION:On the surface of a clad material of a core material and the clad material consisting of a rubber-like elastic body, an outside covered layer consisting of the rubber-like elastic body, and a fibrillation high polymer porous body or their complex is provided. As for the rubber-like elastic body used as the core material, an arbitrary polymer whose transparency is excellent and whose refractive index is higher than that of the clad material can be used. The rubber-like elastic body of the clad material is brought to heat cross- linking or light cross-linking by an action of a vulcanizing agent which has been mixed therein in accordance with necessity. Subsequently, the outside covered layer consisting of a fibrillation high polymer porous body or their complex is provided thereon. In such a way, wall thickness of the outside covered layer is thinned, and the flexibility can be improved.
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