[go: up one dir, main page]

DE19836291A1 - Process to manufacture water aeration folded elongated rubber tube with extruded sections of different thickness and hardness and punched slits - Google Patents

Process to manufacture water aeration folded elongated rubber tube with extruded sections of different thickness and hardness and punched slits

Info

Publication number
DE19836291A1
DE19836291A1 DE1998136291 DE19836291A DE19836291A1 DE 19836291 A1 DE19836291 A1 DE 19836291A1 DE 1998136291 DE1998136291 DE 1998136291 DE 19836291 A DE19836291 A DE 19836291A DE 19836291 A1 DE19836291 A1 DE 19836291A1
Authority
DE
Germany
Prior art keywords
section
hardness
punched
layer
harder
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.)
Withdrawn
Application number
DE1998136291
Other languages
German (de)
Inventor
Arnold Jaeger
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE1998136291 priority Critical patent/DE19836291A1/en
Publication of DE19836291A1 publication Critical patent/DE19836291A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C02F3/20—Activated sludge processes using diffusers
    • C02F3/201—Perforated, resilient plastic diffusers, e.g. membranes, sheets, foils, tubes, hoses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2312—Diffusers
    • B01F23/23124—Diffusers consisting of flexible porous or perforated material, e.g. fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2312—Diffusers
    • B01F23/23126—Diffusers characterised by the shape of the diffuser element
    • B01F23/231265—Diffusers characterised by the shape of the diffuser element being tubes, tubular elements, cylindrical elements or set of tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/237—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids characterised by the physical or chemical properties of gases or vapours introduced in the liquid media
    • B01F23/2376—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids characterised by the physical or chemical properties of gases or vapours introduced in the liquid media characterised by the gas being introduced
    • B01F23/23761—Aerating, i.e. introducing oxygen containing gas in liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/0015—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor specially adapted for perforating tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/305—Treatment of water, waste water or sewage
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Hydrology & Water Resources (AREA)
  • Microbiology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Abstract

A water aeration assembly, which in side elevation is an elongated flat rubber ring, has numerous holes punched in the upper surface. Air is admitted through the sides to an air chamber and emerges as fine bubbles through holes punched slits in the upper layer. The layer of material forming the lower layer is harder (80-95 degrees Shore) than the upper layer (40-45 degrees Shore). A water aeration assembly, which in side elevation is an elongated flat rubber ring, has numerous holes punched in the upper surface. Air is admitted through the sides to an air chamber and emerges as fine bubbles through holes punched slits in the upper layer. The layer of material forming the lower layer is harder (80-95 degrees Shore) than the upper layer (40-45 degrees Shore). Preferred Features: The assembly is manufactured by extrusion. The bottom layer is two to five times thicker than the upper layer. The unit is made as a single sheet of rubber which is then punched, folded, joined at to form a seam and is then punched.

Description

Die Erfindung betrifft ein Verfahren zur Herstellung von aus einem Elastomer bestehenden, langgestreckten Vorrichtungen zum feinblasigen Belüften von Wasser mit ringförmig geschlossenem Querschnitt zum Einleiten der Luft und feinen Schlitzen zum Austritt der Luft, die durch Stanzen erzeugt werden.The invention relates to a method for producing made of an elastomer, elongated Devices for aerating fine bubbles with water annular closed cross section to initiate the Air and fine slits to let the air out produced by punching.

Nach bekannten Verfahren zur Erzeugung der feinen Schlitze wird in die schlauchförmige, unperforierte Vorrichtung ein langgestrecktes Gegenlager eingeführt, um so einen Umfangsabschnitt der Vorrichtung mit einem Stanzwerkzeug bearbeiten zu können. Es versteht sich, dass sich ein solches Verfahren nicht zur Herstellung längerer Vorrichtungen eignet.According to known methods of producing the fine Slits are made in the tubular, imperforate Device introduced an elongated counter bearing, around a peripheral portion of the device with a To be able to process the punching tool. It goes without saying that such a process cannot be used to manufacture longer devices.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren der eingangs erwähnten Art vorzuschlagen, das die Herstellung bzw. Stanzung langer Vorrichtungen ermöglicht.The invention has for its object a method to propose of the kind mentioned at the beginning that the Manufacture or punching of long devices enables.

Zur Lösung dieser Aufgabe wird erfindungsgemäss bei der Herstellung der noch zu stanzende Vorrichtung (Rohling) diese auf einem Teil ihres Umfangs gegenüber einem anderen Teil des Umfangs mit wesentlich grösserer Härte in der Weise ausgeführt, dass dieser Teil zähhart ist. Allsdann wird der weichere Abschnitt unter Abstützung auf dem härteren Abschnitt gestanzt.To achieve this object, according to the invention Production of the device to be punched (blank) these on a part of their circumference versus one other part of the circumference with much greater hardness executed in such a way that this part is tough. Then the softer section is supported punched the harder section.

Dabei kann von einem beliebig langen Rohling ausgegangen werden; er kann durch Spritzen auf Extrudiermaschinen durch Zusammenführen von zwei oder mehreren Strängen gefertigt werden und dabei unterschiedlich harte Umfangsabschnitte erhalten. Unter dieser Voraussetzung ist es nur noch erforderlich, beim Stanzvorgang den zu stanzenden weichen Umfangsabschnitt auf dem härteren Abschnitt abzustützen bzw. aufzulegen. Das für den Stanzvorgang notwendige Widerlager wird dann vom dem zähharten Umfangsabschnitt der Vorrichtung gebildet, obwohl dieser Abschnitt nicht absolut starr, sondern elastisch, aber ausreichend hart ausgeführt ist.A blank of any length can be assumed become; it can be sprayed on extrusion machines by merging two or more strands are manufactured and hard at different times Get circumferential sections. Under this condition it is only necessary to close the punching process punching soft peripheral section on the harder Support or hang up section. That for the Punching process necessary abutment is then from the tough hard peripheral portion of the device formed, although this section is not absolutely rigid, but elastic, but sufficiently hard.

Der weichere Abschnitt erhält zweckmässigerweise eine Härte von etwa 40-65 Shore, um den gewünschten Effekt der sich unter dem Luftdruck öffnenden, aber sich später bei fallendem oder fehlendem Luftdruck wieder schliessenden feinen Schlitze erzielen zu können. Ein Widerlager ist indessen ausreichend widerstandsfähig, wenn sein Umfangsabschnitt eine Shore-Härte A von 80-95° erhält, wobei diese Härte durch Schwefel- und/oder Fremdstoffbeimischung erreichbar ist.The softer section expediently receives one Hardness of about 40-65 Shore to get the desired effect the one that opens under the air pressure, but later  if the air pressure drops or is missing closing fine slits. On Abutment is however sufficiently resistant, if its peripheral portion has a Shore hardness A of Receives 80-95 °, this hardness due to sulfur and / or Admixture of foreign substances is achievable.

Weitere Einzelheiten der Erfindung werden anhand der Zeichnung erläutert, in der ein Ausführungsbeispiel für das erfindungsgemässe Verfahren schematisch dargestellt ist.Further details of the invention are based on the Drawing explained in which an embodiment for the method according to the invention is shown schematically is.

Es zeigenShow it

Fig. 1 eine noch nicht gestanzte Vorrichtung als Längenabschnitt in schaubildlicher Darstellung, Fig. 1 is a not yet punched device as a longitudinal section in perspective view,

Fig. 2 die Vorrichtung gemäss Fig. 1 im Teillängsschnitt und Fig. 2 shows the device of FIG. 1 in partial longitudinal section and

Fig. 3 die Vorrichtung nach Fertigstellung des Rohlings im Teilquerschnitt beim Stanzvorgang. Fig. 3 shows the device after completion of the blank in partial cross section during the punching process.

Das Profil aus Gummi wird gemäss Fig. 1 und 2 unter Verwendung von zwei Extrudern gefertigt, von denen der obere einen Strang im Sinne des Pfeiles 1 und der untere einen Strang im Sinne des Pfeiles 2 erzeugt. Beide Stränge werden im Zuge der Extrusion zusammengefügt, und zwar unter Bildung eines oben gelegenen Streifens 3 und eines unten gelegenen Streifens 4 in der Weise, dass der untere Streifen 4 den oberen Streifen durch beidseitige Abbiegungen 5 nach oben den Streifen 3 zwischen sich erfasst. Um zu verhindern, dass sich die Streifen 3, 4 flächig vereinen, wird im Sinne des Pfeiles 6 Luft z. B. zusammen mit Talcum zugeführt.The rubber profile according to FIG. 1 and 2 is manufactured using two extruders, each of which generates the upper one strand in the direction of arrow 1 and the lower one strand in the direction of the arrow 2. Both strands are joined together in the course of the extrusion, to be precise with the formation of an upper strip 3 and a lower strip 4 in such a way that the lower strip 4 grips the upper strip 3 between them by means of bends 5 on both sides. In order to prevent the strips 3 , 4 from joining together, in the direction of the arrow 6 air z. B. fed together with Talcum.

Der Kautschuk für die Streifen ist unterschiedlich derart eingestellt, dass nach der anschliessenden, vorzugsweise kontinuierlichen Vulkanisation, die nach bekannten Verfahren durchgeführt wird, der fertige Rohling einen Streifen 3 mit einer Härte von etwa 45° Shore A und einen Streifen 4 mit einer Härte von etwa 90-95° Shore aufweist, wobei es sich versteht, dass die beiden Streifen 3, 4 an den Stosstellen 7 fest zusammenvulkanisiert sind.The rubber for the strips is set differently such that after the subsequent, preferably continuous vulcanization, which is carried out by known methods, the finished blank has a strip 3 with a hardness of approximately 45 ° Shore A and a strip 4 with a hardness of approximately 90-95 ° Shore, it being understood that the two strips 3 , 4 are firmly vulcanized together at the joints 7 .

Dieser Rohling dient der Fertigstellung der Vorrichtung. Der auf einer festen Unterlage 8 ruhende, fertig vulkanisierte Rohling wird nun durch von oben auf ihn einwirkende Stanzmesser 9 beliebiger Ausführung bearbeitet, um so die feinen Schlitze 10 mit einer Länge von etwa 0.5-1 mm zu erzeugen. Dieser Stanzvorgang ist möglich, weil der Streifen 4 infolge seiner zähharten Eigenschaften ein ausreichend festes Widerlager bildet.This blank is used to complete the device. The fully vulcanized blank, which rests on a solid base 8 , is then processed by punching knives 9 of any design acting on it from above, so as to produce the fine slits 10 with a length of approximately 0.5-1 mm. This punching process is possible because the strip 4 forms a sufficiently strong abutment due to its tough properties.

Erwähnt sei noch, dass der härtere Streifen 4 eine Wandstärke erhält, die zwei- bis fünfmal grösser ist im Vergleich zum weicheren Streifen 3, der normalerweise eine Wandstärke von etwa 2 mm erhält.It should also be mentioned that the harder strip 4 has a wall thickness that is two to five times greater than that of the softer strip 3 , which usually has a wall thickness of approximately 2 mm.

In bekannter Weise wird beim Betrieb der Vorrichtung vorgespannte Luft in den Hohlraum zwischen den beiden Streifen 3, 4 eingeleitet. Der Innendruck öffnet die feinen Schlitze 10. Dabei treten feine Bläschen in das Wasser ein. Bei nachlassendem Innendruck schliessen sich die Schlitze 10.In a known manner, prestressed air is introduced into the cavity between the two strips 3 , 4 during operation of the device. The internal pressure opens the fine slits 10 . Fine bubbles enter the water. When the internal pressure drops, the slots 10 close.

Claims (6)

1. Verfahren zur Herstellung von aus einem Elastomer bestehenden, langgestreckten Vorrichtungen zum feinblasigen Belüften von Wasser mit ringförmig geschlossenem Querschnitt zum Einleiten der Luft und feinen Schlitzen zum Austritt der Luft, wobei die feinen Schlitze durch Stanzen erzeugt werden, dadurch gekennzeichnet, dass bei der Fertigung der noch zu stanzenden Vorrichtung (Rohling) diese auf einem Teil ihres Umfangs gegenüber einem anderen Teil des Umfangs zur Bildung zähharter Eigenschaften mit wesentlich grösserer Härte ausgeführt und der weichere Abschnitt unter Abstützung auf dem härteren Abschnitt gestanzt wird.1. A process for the production of elastomeric, elongated devices for the fine-bubble aerating of water with a closed circular cross-section for introducing the air and fine slots for the exit of the air, the fine slots being produced by stamping, characterized in that during production of the device to be punched (blank), this is carried out on a part of its circumference with respect to another part of the circumference to form tough, hard properties with substantially greater hardness, and the softer section is punched with support on the harder section. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass der härtere Abschnitt auf eine Härte von etwa 80-95° Shore A und der weichere Abschnitt auf eine Härte von etwa 40-65° Shore A eingestellt wird.2. The method according to claim 1, characterized in that that the harder section to a hardness of about 80-95 ° Shore A and the softer section to a hardness of about 40-65 ° Shore A is set. 3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Vorrichtung im Strangpressverfahren ausgeführt wird. 3. The method according to claim 1, characterized in that the device is extruded becomes.   4. Vorrichtung hergestellt nach dem Verfahren gemäss Anspruch 1, dadurch gekennzeichnet, dass die Abschnitte (Streifen 1, 2) unterschiedlicher Härte zumindest in etwa die gleiche Breitenerstreckung aufweisen, wenn die Abschnitte zum Stanzen aufeinanderliegen.4. Device produced by the method according to claim 1, characterized in that the sections (strips 1 , 2 ) of different hardness have at least approximately the same width when the sections for punching lie one on top of the other. 5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass der härtere Abschnitt (4) vorzugsweise beidseitig derart nach oben abgebogen ist, dass die Abbiegungen (5) den weicheren Abschnitt (3) zwischen sich einschliessen.5. The device according to claim 4, characterized in that the harder section ( 4 ) is preferably bent upwards on both sides such that the bends ( 5 ) enclose the softer section ( 3 ) between them. 6. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass der Abschnitt (4) grösserer Härte eine Wandstärke aufweist, die zwei- bis fünfmal grösser ist als die Wandstärke des weicheren Abschnitts (3).6. The device according to claim 4, characterized in that the section ( 4 ) of greater hardness has a wall thickness which is two to five times greater than the wall thickness of the softer section ( 3 ).
DE1998136291 1998-08-11 1998-08-11 Process to manufacture water aeration folded elongated rubber tube with extruded sections of different thickness and hardness and punched slits Withdrawn DE19836291A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1998136291 DE19836291A1 (en) 1998-08-11 1998-08-11 Process to manufacture water aeration folded elongated rubber tube with extruded sections of different thickness and hardness and punched slits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1998136291 DE19836291A1 (en) 1998-08-11 1998-08-11 Process to manufacture water aeration folded elongated rubber tube with extruded sections of different thickness and hardness and punched slits

Publications (1)

Publication Number Publication Date
DE19836291A1 true DE19836291A1 (en) 2000-02-17

Family

ID=7877146

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1998136291 Withdrawn DE19836291A1 (en) 1998-08-11 1998-08-11 Process to manufacture water aeration folded elongated rubber tube with extruded sections of different thickness and hardness and punched slits

Country Status (1)

Country Link
DE (1) DE19836291A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007065088A3 (en) * 2005-11-29 2007-08-09 Air Diffusion Systems Fine bubble delivery for potable water, wastewater, and clean water treatment, method
DE102013106845A1 (en) * 2013-07-01 2015-01-08 NORRES Beteiligungs-GmbH Device for distributing gases in liquids
WO2016096716A1 (en) * 2014-12-16 2016-06-23 Rudolf Messner Umwelttechnik Ag Air distributor for the aeration of a water volume, air distributor foil for an air distributor of said type, and method for producing an air distributor foil of said type
EP3782720A1 (en) * 2005-04-22 2021-02-24 Life Technologies Corporation Gas spargers and related container systems

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3782720A1 (en) * 2005-04-22 2021-02-24 Life Technologies Corporation Gas spargers and related container systems
WO2007065088A3 (en) * 2005-11-29 2007-08-09 Air Diffusion Systems Fine bubble delivery for potable water, wastewater, and clean water treatment, method
US8132794B2 (en) 2005-11-29 2012-03-13 Air Diffusion Systems Fine bubble delivery for potable water, wastewater, and clean water treatment
US20120168980A1 (en) * 2005-11-29 2012-07-05 Hinde John N Fine bubble delivery for potable water, wastewater, and clean water treatment
US8348247B2 (en) 2005-11-29 2013-01-08 Air Diffusion Systems, A John Hinde Company Fine bubble delivery for potable water, wastewater, and clean water treatment
DE102013106845A1 (en) * 2013-07-01 2015-01-08 NORRES Beteiligungs-GmbH Device for distributing gases in liquids
US9512020B2 (en) 2013-07-01 2016-12-06 NORRES Beteiligungs-GmbH Device for distributing gases in liquids
DE102013106845B4 (en) * 2013-07-01 2017-06-14 NORRES Beteiligungs-GmbH Device for distributing gases in liquids
WO2016096716A1 (en) * 2014-12-16 2016-06-23 Rudolf Messner Umwelttechnik Ag Air distributor for the aeration of a water volume, air distributor foil for an air distributor of said type, and method for producing an air distributor foil of said type

Similar Documents

Publication Publication Date Title
EP0276824B1 (en) Process for the production of a continuous material having padded elements for sports fields
DE2429718C3 (en) Drainage pipe made of plastic and device for producing a drainage pipe
DE3739753C2 (en)
DE3237799A1 (en) VENTILATION GRILL AND METHOD FOR THE PRODUCTION THEREOF
DE3739425C2 (en) Device for forming a sealing unit
DE2501774A1 (en) FLEXIBLE SEALING STRIP AND METHOD OF MANUFACTURING IT
DE69611969T2 (en) Knife for forming slits in a tire tread in a vulcanization mold and process for its manufacture
DE102015212982B4 (en) Seal and method of making the seal
DE3785350T2 (en) METHOD FOR PRODUCING DOUBLE-TOOTHED BELTS.
DE2042485A1 (en) Seat, especially for motor vehicles, and process for its manufacture
DE19836291A1 (en) Process to manufacture water aeration folded elongated rubber tube with extruded sections of different thickness and hardness and punched slits
DE3503200A1 (en) Process for producing an extrusion moulding device
DE3930527C1 (en)
DE6908040U (en) PLASTIC PIPE WITH CROSS GROOVES AND SMOOTH INSIDE WALL AND DEVICE FOR MANUFACTURING THESE PIPES
DE10357732B4 (en) Process for the production of expanded metal elements for the construction of fences and fence panel made of an expanded metal mesh element
DE602005004996T2 (en) Process for producing a high-pressure pipe part and high-pressure pipe part
DE60315397T2 (en) Apparatus for producing composite structures
DE102004010617A1 (en) Connection between an elastomeric part and a component and method for establishing the connection
DE3833600A1 (en) TRIM BAR AND METHOD FOR PRODUCING THE TRIM BAR
DE2115102C3 (en) Device for the production of soft cheese
DE202006019999U1 (en) Vehicle seat e.g. for motor vehicle has plate which exhibits number of outward open channels and cover is provided with in channels for fixing pressed profiles
DE69500742T2 (en) Self-adjusting door seal for motor vehicles
DE202019101313U1 (en) Aerator
DE4036148A1 (en) INSULATING GLASS DISC FOR MOTOR VEHICLES AND METHOD FOR THEIR PRODUCTION
DE3818112A1 (en) METHOD FOR PRODUCING AN EXTERNAL UPHOLSTERY LAYER OF A SEAT BACKREST

Legal Events

Date Code Title Description
8139 Disposal/non-payment of the annual fee