EP0119212A1 - Elastomer preform - Google Patents

Elastomer preform

Info

Publication number
EP0119212A1
EP0119212A1 EP83902749A EP83902749A EP0119212A1 EP 0119212 A1 EP0119212 A1 EP 0119212A1 EP 83902749 A EP83902749 A EP 83902749A EP 83902749 A EP83902749 A EP 83902749A EP 0119212 A1 EP0119212 A1 EP 0119212A1
Authority
EP
European Patent Office
Prior art keywords
gas
molded part
layer
elastomer molded
binder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP83902749A
Other languages
German (de)
French (fr)
Inventor
Jürgen BOROWITZ
Ewald TRÄNKLE
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0119212A1 publication Critical patent/EP0119212A1/en
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/04—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B25/08—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J3/00—Diaphragms; Bellows; Bellows pistons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/26—Polymeric coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/724—Permeability to gases, adsorption
    • B32B2307/7242—Non-permeable

Definitions

  • the invention is based on an elastomer molded part according to the preamble of the main claim.
  • a known elastomer molded part has good strength and elasticity on the one hand due to the base body, and on the other hand it has high gas impermeability. It is disadvantageous, however, that the layer made of gas-impermeable material does not adhere optimally and is damaged by contact with liquids in particular, as a result of which gas impermeability suffers.
  • the elastomer molded part according to the invention with the characterizing features of the main claim has the advantage that the service life and gas impermeability are significantly improved with little additional effort.
  • the measures listed in the subclaims enable further developments of the features specified in the main claim.
  • the drawing shows a section through a membrane elastomer molded part.
  • the elastomer molded part 10 arranged as a partition between a liquid and a gas in a container has a multi-layer structure. It has, for example, two preformed, partially or completely vulcanized base bodies 11, 12 made of a rubber-elastic material of the same or different material base.
  • the base body can, for example, have an approximately hemispherical shape with a radially outwardly directed edge 13 which is fastened to the container (not shown).
  • a binder 14 is applied, for. 3. an adhesive or elastic adhesive.
  • a similar application 15 is carried out on the side of the other part which faces the side of the first base body.
  • a layer 16 in particular thermoplastic film, from one plant fabric with very low gas impermeability. Suitable materials for this are polyvinyl alcohol (PVAL), polyvinylidene chloride (PVDC), polyvinylidene fluoride (PVDF) and compounds made of PVAL with a PVDC coating or films made of other suitable thermoplastics with a PVDC coating.
  • the parts pretreated in this way are expediently firmly connected to one another, the elastic elastomer molded part is then fastened with its edge in the container. It is important that the gas-impermeable material does not come into contact with a liquid.
  • Such an elastomer molded part is particularly suitable as a partition in pressure accumulators used in hydraulic systems, in which it separates a gas space from a liquid space.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
  • Diaphragms And Bellows (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

Le préformé d'élastomère comporte deux corps de base (11, 12) en gomme élastique dont les composants de base sont semblables ou différents, ainsi qu'une couche (16) de matériau imperméable au gaz, par exemple de l'alcool polyvinylique, insérée entre les deux corps. La liaison des deux corps de base (11, 12) avec la couche intermédiaire (16) est réalisée grâce à un liant (14, 15). Le préformé d'élastomère convient particulièrement bien aux appareils sous pression dans lesquels un liquide est séparé d'un gaz.The elastomer preform has two basic bodies (11, 12) made of elastic rubber, the basic components of which are similar or different, as well as a layer (16) of material impermeable to gas, for example polyvinyl alcohol, inserted between the two bodies. The connection of the two base bodies (11, 12) with the intermediate layer (16) is carried out by means of a binder (14, 15). The elastomer preform is particularly suitable for pressure vessels in which a liquid is separated from a gas.

Description

Elastomerformteil Molded elastomer
Stand der TechnikState of the art
Die Erfindung geht aus von einem Elastomerformteil nach der Gattung des Hauptanspruchs. Ein derartiges bekanntes Elastomerformteil besitzt einerseits durch den Grundkörper gute Festigkeit und Elastizität, andererseits weist er eine hohe Gasundurchlässigkeit auf. Nachteilig ist jedoch, daß die Schicht aus gasundurchlässigem Werkstoff nicht optimal haftet und durch Berührung vor allem mit Flüssigkeiten beschädigt wird, wodurch die Gasundurchlässigkeit leidet.The invention is based on an elastomer molded part according to the preamble of the main claim. Such a known elastomer molded part has good strength and elasticity on the one hand due to the base body, and on the other hand it has high gas impermeability. It is disadvantageous, however, that the layer made of gas-impermeable material does not adhere optimally and is damaged by contact with liquids in particular, as a result of which gas impermeability suffers.
Vorteile der ErfindungAdvantages of the invention
Das erfindungsgemäße Elastomerformteil mit den kennzeichnenden Merkmalen des Hauptanspruchs hat demgegenüber den Vorteil, daß die Lebensdauer und Gasundurchlässigkeit bei nur geringfügigem Mehraufwand wesentlich verbessert sind. Durch die in den Unteransprüchen aufgeführten Maßnahmen sind Weiterbildungen der im Hauptanspruch angegebenen Merkmale möglich.The elastomer molded part according to the invention with the characterizing features of the main claim has the advantage that the service life and gas impermeability are significantly improved with little additional effort. The measures listed in the subclaims enable further developments of the features specified in the main claim.
Zeichnungdrawing
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert. Die Zeichnung zeigt einen Schnitt durch ein membranariges Elastomerformteil.An embodiment of the invention is shown in the drawing and explained in more detail in the following description. The drawing shows a section through a membrane elastomer molded part.
Beschreibung des ErfindungsbeispielsDescription of the invention example
Das als Trennwand zwischen einer Flüssigkeit und einem Gas in einem Behälter angeordnete Elastomerformteil 10 ist mehrschichtig aufgebaut. Es weist beispielsweise zwei vorgeformte, teil- oder vollständig ausvulkanisieineiπander passende Grundkörper 11, 12 aus einem gumml elastischen Werkstoff gleicher oder unterschiedlicher Stoffbasis auf. Die Grundkörper können beispielsweise etwa halbkugelige Form haben mit einem radial auswärts gerichteten Rand 13, der am nicht dargestellten Behalter befestigt ist.The elastomer molded part 10 arranged as a partition between a liquid and a gas in a container has a multi-layer structure. It has, for example, two preformed, partially or completely vulcanized base bodies 11, 12 made of a rubber-elastic material of the same or different material base. The base body can, for example, have an approximately hemispherical shape with a radially outwardly directed edge 13 which is fastened to the container (not shown).
An derjenigen Seite des einen Grundkörpers 11, welcher der Seite des anderen 12 zugewandt ist, ist ein Bindemittel 14 aufgetragen, z. 3. ein Haftvermijtier oder elastischer Klebstoff. Eine ebensolche Auftragung 15 erfolgt auf der Seite des anderen Teils, die der Seite des ersten Grundkörpers zugewandt ist. Zwischen den beiden einander zugewandten und mit Bindemitteln versehenen Hälften der Grundkörper befindet sich eine Schicht 16, insbesondere thermoplastische Folie, aus einem Werk stoff mit sehr geringer Gasundurchlässigkeit. Als hierfür geeignete Werkstoffe erweisen sich Polyvinylalkohol (PVAL), Poiyvinylidenchiorid (PVDC ) Polyvinylidenfluorid (PVDF) und Verbunfoiien aus PVAL mit PVDC-Beschichtung bzw. Folien aus anderen geeigneten Thermoplasten mit PVDC-Beschichtung.On that side of a base body 11, which faces the side of the other 12, a binder 14 is applied, for. 3. an adhesive or elastic adhesive. A similar application 15 is carried out on the side of the other part which faces the side of the first base body. Between the two halves of the base body facing one another and provided with binders there is a layer 16, in particular thermoplastic film, from one plant fabric with very low gas impermeability. Suitable materials for this are polyvinyl alcohol (PVAL), polyvinylidene chloride (PVDC), polyvinylidene fluoride (PVDF) and compounds made of PVAL with a PVDC coating or films made of other suitable thermoplastics with a PVDC coating.
Es ist jedoch ebenso möglich, das Bindemittel auf den Oberflächen der Schicht 1 6 aufzutragen.However, it is also possible to apply the binder to the surfaces of layer 16.
Die so vorbehandelten Teile werden auf zweckmäßige Weise fest miteinander verbunden, das elastische Elastomerformteil sodann mit seinem Rand im Behälter befestigt. Wichtig ist hierbei, daß der gasundurchlässige Werkstoff nicht mit einer Flüssigkeit in Berührung kommt.The parts pretreated in this way are expediently firmly connected to one another, the elastic elastomer molded part is then fastened with its edge in the container. It is important that the gas-impermeable material does not come into contact with a liquid.
Besonders geeignet ist ein derartiges Elastomerformteil als Trennwand in in Hydroanlagen verwendeten Druckspeichern, in denen sie einen Gas- von einem Fiüssigkeitsraum trennt. Such an elastomer molded part is particularly suitable as a partition in pressure accumulators used in hydraulic systems, in which it separates a gas space from a liquid space.

Claims

Ansprüche Expectations
1. Elastomerformteil, insbesondere elastische Trennwand, bestehend aus einem Grundkörper aus gummi elastischem Werkstoff und einer mit diesem, verbundenen Schicht aus gasundurchlässigem Werkstoff, dadurch gekennzeichnet, daß die Schicht ( 1 6 ) aus gasundurchlässigem Werkstoff in den gummielastischen Werkstoff (11, 12) eingebettet ist und daß an der Berührungssteile der beiden Werkstoffe ein Bindemittel ( 14 , 15) verwendet ist.1. Elastomer molded part, in particular elastic partition, consisting of a base body made of rubber-elastic material and a layer of gas-impermeable material connected thereto, characterized in that the layer (1 6) made of gas-impermeable material is embedded in the rubber-elastic material (11, 12) is and that a binder (14, 15) is used on the contact parts of the two materials.
2. Elastomerformteil nach Anspruch 1 , dadurch gekennzeichnet, daß die Schicht aus gasundurchlässigem Werkstoff aus einer Folie, insbesondere thermoplastische Folie, besteht, wie Polyvinylalkohol (PVAL), Poiyvinylidenchiorid (PVDC), Pαiyvinyiidenfiuorid (PVDF) und Verbundfoiien aus PVAL mit PVDC-Beschichtung bzw. Folien aus anderen geeigneten Thermoplasten mit PVDC-Beschichtung. 2. Elastomer molded part according to claim 1, characterized in that the layer of gas-impermeable material consists of a film, in particular thermoplastic film, such as polyvinyl alcohol (PVAL), polyvinylidene chloride (PVDC), Pαiyvinyiidenfiuorid (PVDF) and Verbundfoiien made of PVAL with PVDC coating or Films made from other suitable thermoplastics with a PVDC coating.
3. Elastomerformteil nach Anspruch 1, dadurch gekennzeichnet, daß die gasundurchlässige Schickt als Dispersion oder Lösung auf die Grundkörper aufgebracht ist.3. Elastomer molded part according to claim 1, characterized in that the gas-impermeable layer is applied as a dispersion or solution to the base body.
4 . Elastomerformteil nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Grundkörper aus zwei Formteilhälften aus teil- oder vollständig ausvulkanisiertem gummielastischen Werkstoff gleicher oder unterschiedlicher Stoffbasis besteht und daß die Innenseite des einen Teils und die diesem zugewandte Seite des anderen Teils oder die gasundurchlässige Schicht mit dem Bindemittel beschichtet ist.4th Elastomer molded part according to one of claims 1 to 3, characterized in that the base body consists of two molded part halves made of partially or fully vulcanized rubber-elastic material of the same or different material basis and that the inside of one part and the side of the other part facing it or the gas-impermeable layer is coated with the binder.
5. Elastomerformteil nach einem der Ansprüche 1 bis 4 , dadurch gekennzeichnet, daß das Bindemittel ein elastischer Klebstoff oder ein Haftvermittlersystem ist. 5. Elastomer molded part according to one of claims 1 to 4, characterized in that the binder is an elastic adhesive or an adhesion promoter system.
EP83902749A 1982-09-17 1983-09-02 Elastomer preform Ceased EP0119212A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19828226197U DE8226197U1 (en) 1982-09-17 1982-09-17 ELASTOMER MOLDED PART
DE8226197U 1982-09-17

Publications (1)

Publication Number Publication Date
EP0119212A1 true EP0119212A1 (en) 1984-09-26

Family

ID=6743762

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83902749A Ceased EP0119212A1 (en) 1982-09-17 1983-09-02 Elastomer preform

Country Status (5)

Country Link
EP (1) EP0119212A1 (en)
JP (1) JPS59501583A (en)
AU (1) AU1889983A (en)
DE (1) DE8226197U1 (en)
WO (1) WO1984001127A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1264517C (en) * 1984-06-15 1990-01-23 Clear barrier composite containing polyisobutylene/polyolefin alloy components
US5156921A (en) * 1988-04-11 1992-10-20 Hercules Incorporated Tire innerliner
CA1331734C (en) * 1988-04-11 1994-08-30 Hercules Incorporated Gas barrier structure for pneumatic articles
JPH02165948A (en) * 1988-12-20 1990-06-26 Nok Corp Rubber resin composite file material and manufacture thereof
FR2662638B1 (en) * 1990-05-31 1997-09-05 Nok Corp COLD RESISTANT LAMINATED SHEET GAS BARRIER, BLADDER FOR ACCUMULATOR AND ACCUMULATOR COMPRISING SAME.
DE102021000744A1 (en) 2021-02-13 2022-08-18 "H Y D A C Technology GmbH" separator

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2098976A5 (en) * 1970-07-31 1972-03-10 Joint Francais
GB1358422A (en) * 1970-11-12 1974-07-03 Goodyear Tire & Rubber Fuel tank with flexible diaphragm
JPS565761A (en) * 1979-06-29 1981-01-21 Asahi Chemical Ind Novel laminate

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8401127A1 *

Also Published As

Publication number Publication date
DE8226197U1 (en) 1984-02-23
AU1889983A (en) 1984-04-04
WO1984001127A1 (en) 1984-03-29
JPS59501583A (en) 1984-09-06

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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17P Request for examination filed

Effective date: 19840516

AK Designated contracting states

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Effective date: 19860605

RIN1 Information on inventor provided before grant (corrected)

Inventor name: TRAENKLE, EWALD

Inventor name: BOROWITZ, JUERGEN