DE1264182B - tube - Google Patents

tube

Info

Publication number
DE1264182B
DE1264182B DEC25655A DEC0025655A DE1264182B DE 1264182 B DE1264182 B DE 1264182B DE C25655 A DEC25655 A DE C25655A DE C0025655 A DEC0025655 A DE C0025655A DE 1264182 B DE1264182 B DE 1264182B
Authority
DE
Germany
Prior art keywords
inner tube
hose
hoses
tube
practically
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.)
Pending
Application number
DEC25655A
Other languages
German (de)
Inventor
Rolf Meschenmoser
Dipl-Chem Dr Herbert Sieber
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.)
Continental AG
Original Assignee
Continental Gummi Werke AG
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 Continental Gummi Werke AG filed Critical Continental Gummi Werke AG
Priority to DEC25655A priority Critical patent/DE1264182B/en
Priority to GB4429162A priority patent/GB967612A/en
Priority claimed from FR917274A external-priority patent/FR1341098A/en
Publication of DE1264182B publication Critical patent/DE1264182B/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05DPROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/02Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to macromolecular substances, e.g. rubber
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/15Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
    • B29C48/151Coating hollow articles
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L11/00Hoses, i.e. flexible pipes
    • F16L11/04Hoses, i.e. flexible pipes made of rubber or flexible plastics
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00Rigid pipes
    • F16L9/12Rigid pipes of plastics with or without reinforcement
    • F16L9/133Rigid pipes of plastics with or without reinforcement the walls consisting of two layers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels

Description

BUNDESREPUBLIK DEUTSCHLANDFEDERAL REPUBLIC OF GERMANY

DEUTSCHESGERMAN

PATENTAMTPATENT OFFICE

AUSLEGESCHRIFTEDITORIAL

Int. CL:Int. CL:

F161F161

Deutsche Kl.: 47fU- ·- ΛGerman class: 47fU- - Λ

Nummer: 1264182Number: 1264182

Aktenzeichen: C 25655 XII/47 fFile number: C 25655 XII / 47 f

Anmeldetag: 1. Dezember 1961Filing date: December 1, 1961

Auslegetag: 21. März 1968Open date: March 21, 1968

Schlauchhose

Die Erfindung bezieht sich auf Schläuche, bestehend aus einem aus halogenhaltigen Äthylenpolymeren, beispielsweise Polytetrafluoräthylen hergestellten Innenschlauch und einer äußeren Umhüllung aus einem weicheren elastomeren Werkstoff, die den Innenschlauch haftungsfrei und praktisch ohne Formschluß umschließt.The invention relates to hoses consisting of a halogen-containing ethylene polymer, for example polytetrafluoroethylene made inner tube and an outer sheath Made of a softer elastomeric material, which makes the inner tube non-stick and practically without a form fit encloses.

Schläuche dieser Art werden wegen ihrer Beständigkeit gegen chemische Einflüsse und ihrer besonderen physikalischen Eigenschaften bevorzugt dort verwendet, wo es sich um die Durchleitung aggressiver Medien oder um den Einsatz in korrosiver Umgebung oder in Gebieten mit höheren Temperaturwerten handelt. Als nachteilig wird dabei vielfach die verhältnismäßig hohe Biegesteifigkeit der Schläuche empfunden, die zur Anwendung unerwünscht großer Biegeradien zwingt. Die Unterschreitung eines bestimmten Mindestradius beim Verlegen der Schläuche führt erfahrungsgemäß zum Einknicken mit bleibenden Formänderungen der Schlauchwandungen, die neben der sofortigen Wirkung als Drosselstellen die Ursache für spätere vollständige Brüche mit Aufplatzen des betroffenen Schlauches bilden. Da dieses Verhalten der bekannten Schläuche auf den von außen her nicht beeinflußbaren physikalischen Eigenschäften, in erster Linie auch dem Plastizitätsmodul des verwendeten Werkstoffes beruht, mußte man die hierdurch aufgezwungenen Beschränkungen beim Einbau der Schläuche als unumgänglich hinnehmen und beachten, ohne daß es bisher gelungen wäre, die erwünschte Freizügigkeit durch konstruktiv gestaltende Maßnahmen zu erreichen.Hoses of this type are used because of their resistance to chemical influences and their special physical properties preferably used where the passage is more aggressive Media or use in a corrosive environment or in areas with higher temperature values. As a disadvantage is often the felt relatively high flexural rigidity of the hoses, which is undesirably large for the application Forcing bending radii. Falling below a certain minimum radius when laying the hoses experience has shown that it leads to buckling with permanent changes in shape of the hose walls, which in addition to the immediate effect as throttling points, the cause of later complete fractures with bursting of the affected tube. Since this behavior of the known hoses is based on the Physical properties that cannot be influenced from the outside, primarily also the modulus of plasticity based on the material used, one had to comply with the restrictions imposed by this Accept and observe the installation of the hoses as unavoidable, without having succeeded so far to achieve the desired freedom of movement through constructive measures.

Es wurde nun gefunden, daß sich die Geschmeidigkeit und Biegefähigkeit von Schläuchen der eingangs geschilderten Gattung bedeutend erhöhen läßt, wenn gemäß der Erfindung der Innenschlauch druckfest und biegesteif ausgebildet ist und die das Einknicken bei Schlauchbiegungen behindernde Umhüllung aus einem Polyurethan besteht sowie im Vergleich zum Innenschlauch etwa gleiche bis etwa doppelte Wandstärke aufweist.It has now been found that the suppleness and flexibility of hoses of the initially can be significantly increased if the inner tube is pressure-resistant according to the invention and is designed to be rigid and the sheath which prevents buckling in the case of hose bends consists of a polyurethane and compared to the inner tube about the same to about twice the wall thickness having.

Zur Erklärung des Wirkungsmechanismus der Erfindung kann angenommen werden, daß die in sich geschlossene Ummantelung, die haftungsfrei und praktisch ohne Formschluß den steifen Innenschlauch umschließt, die mit dem Einknicken einhergehende Anmelder:To explain the mechanism of action of the invention, it can be assumed that the in closed sheathing that adheres and practically no form fit to the stiff inner tube encloses the notifying party associated with the buckling:

Continental Gummi-Werke Aktiengesellschaft,Continental Gummi-Werke Aktiengesellschaft,

3000 Hannover, Königsworther Platz 13000 Hanover, Königsworther Platz 1

Als Erfinder benannt:Named as inventor:

Rolf Meschenmoser,Rolf Meschenmoser,

Dipl.-Chem. Dr. Herbert Sieber, 3000 HannoverDipl.-Chem. Dr. Herbert Sieber, 3000 Hanover

Durchmesservergrößerung nach beiden Seiten rechtwinklig zur Biegeebene unterdrückt. Sie wirkt gleichsam als Führungsrohr im Sinne einer Verteilung der Knickspannungen auf einen größeren Schlauchabschnitt und verhindert das Auftreten von Knickfalten schon im Entstehen. Diese Wirkung tritt bei den bekannten Schläuchen nicht ein.Enlargement of the diameter on both sides at right angles to the bending plane suppressed. It works as it were as a guide tube in the sense of a distribution of the buckling stresses over a larger hose section and prevents creases from occurring as they arise. This effect occurs the familiar hoses.

Im Vergleich zu diesen zeigen die erfindungsgemäßen Schläuche ein weitaus günstigeres Biegeverhalten, größere Geschmeidigkeit und leichtere Biegefähigkeit und lassen sich in wesentlich kleineren Krümmungsradien ohne Auftreten von Knickstellen abbiegen.Compared to these, the hoses according to the invention show a much more favorable bending behavior, greater suppleness and easier bendability and can be broken down into much smaller ones Bend radii of curvature without occurrence of kinks.

Claims (1)

Patentanspruch:Claim: Schlauch, bestehend aus einem aus halogenhaltigen Äthylenpolymeren, beispielsweise Polytretrafluoräthylen hergestellten Innenschlauch und einer äußeren Umhüllung aus einem weicheren elastomeren Werkstoff, die den Innenschlauch haftungsfrei und praktisch ohne Formschluß umschließt, dadurch gekennzeichnet, daß der Innenschlauch (1) druckfest und biegesteif ausgebildet ist und die das Einknicken bei Schlauchbiegungen behindernde Umhüllung (2) aus einem Polyurethan besteht sowie im Vergleich zum Innenschlauch etwa gleiche bis etwa doppelte Wandstärke aufweist.Hose consisting of a halogen-containing ethylene polymer, such as polytetrafluoroethylene manufactured inner tube and an outer sheath made of a softer elastomer Material that encloses the inner tube without adhesion and practically without a form fit, characterized in that the inner tube (1) is pressure-resistant and rigid and the sheath (2) which prevents buckling when the hose is bent is made of a Polyurethane consists of about the same to about twice as compared to the inner tube Has wall thickness. In Betracht gezogene Druckschriften:
Französische Patentschriften Nr. 1 276 228,
154 498.
Considered publications:
French patent specification No. 1 276 228,
154 498.
Hierzu 1 Blatt Zeichnungen1 sheet of drawings
DEC25655A 1961-12-01 1961-12-01 tube Pending DE1264182B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DEC25655A DE1264182B (en) 1961-12-01 1961-12-01 tube
GB4429162A GB967612A (en) 1961-12-01 1962-11-22 A hose

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEC25655A DE1264182B (en) 1961-12-01 1961-12-01 tube
FR917274A FR1341098A (en) 1962-12-01 1962-12-01 Pipe and method for its manufacture

Publications (1)

Publication Number Publication Date
DE1264182B true DE1264182B (en) 1968-03-21

Family

ID=25969479

Family Applications (1)

Application Number Title Priority Date Filing Date
DEC25655A Pending DE1264182B (en) 1961-12-01 1961-12-01 tube

Country Status (1)

Country Link
DE (1) DE1264182B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0046485A1 (en) * 1980-08-27 1982-03-03 Siemens Aktiengesellschaft Catheter
DE3437659A1 (en) * 1983-10-14 1985-05-02 Toyoda Gosei Co., Ltd., Haruhimura, Aichi HOSE, ESPECIALLY FOR MOTOR VEHICLES
DE8806532U1 (en) * 1988-05-16 1988-07-14 Siemens Ag, 1000 Berlin Und 8000 Muenchen, De

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1154498A (en) * 1955-06-02 1958-04-10 Raybestos Manhattan Improvements to flexible plastic hoses and processes for their manufacture
FR1276228A (en) * 1960-12-14 1961-11-17 Moore & Co Samuel Composite pipe

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1154498A (en) * 1955-06-02 1958-04-10 Raybestos Manhattan Improvements to flexible plastic hoses and processes for their manufacture
FR1276228A (en) * 1960-12-14 1961-11-17 Moore & Co Samuel Composite pipe

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0046485A1 (en) * 1980-08-27 1982-03-03 Siemens Aktiengesellschaft Catheter
DE3437659A1 (en) * 1983-10-14 1985-05-02 Toyoda Gosei Co., Ltd., Haruhimura, Aichi HOSE, ESPECIALLY FOR MOTOR VEHICLES
DE8806532U1 (en) * 1988-05-16 1988-07-14 Siemens Ag, 1000 Berlin Und 8000 Muenchen, De

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