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DE958156C - Process for vulcanizing rubber hoses with fabric insert and plastic core - Google Patents

Process for vulcanizing rubber hoses with fabric insert and plastic core

Info

Publication number
DE958156C
DE958156C DEP14026A DEP0014026A DE958156C DE 958156 C DE958156 C DE 958156C DE P14026 A DEP14026 A DE P14026A DE P0014026 A DEP0014026 A DE P0014026A DE 958156 C DE958156 C DE 958156C
Authority
DE
Germany
Prior art keywords
plastic core
fabric insert
rubber hoses
vulcanizing rubber
hose
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.)
Expired
Application number
DEP14026A
Other languages
German (de)
Inventor
Dr Karl Rastaedter
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.)
Phoenix AG
Original Assignee
Phoenix Gummiwerke 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 Phoenix Gummiwerke AG filed Critical Phoenix Gummiwerke AG
Priority to DEP14026A priority Critical patent/DE958156C/en
Application granted granted Critical
Publication of DE958156C publication Critical patent/DE958156C/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D23/00Producing tubular articles
    • B29D23/001Pipes; Pipe joints
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2021/00Use of unspecified rubbers as moulding material

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)

Description

Gegenstand der Erfindung ist ein Verfahren zum Herstellen von Schläuchen, die eine Kunststoffseele aus thermoplastischem Kunststoff besitzen, der gleichzeitig lösungsmittelfest und flexibel ist. The invention relates to a method for producing hoses, which have a plastic core made of thermoplastic material, which at the same time is solvent-resistant and flexible.

Die Herstellung von Schläuchen erfolgt beispielsweise in der Art, daß ein Gummischlauch gespritzt und mit einer Gewebeeinlage versehen wird. Nach diesem Verfahren kann ohne weiteres ein unvulkanisierter Schlauch auch mit einer Kunststoffseele aus thermoplastischem Werkstoff hergestellt werden. Eine erhebliche Schwierigkeit stellt sich jedoch dann ein, wenn der Schlauch einer Vulkanisation unterworfen werden soll. An den zur Anwendung kommenden Kunststoff wird nämlich die Forderung gestellt, lösungsmittelfest, spritzbar und gleichzeitig biegsam zu sein. Die hierfür geeigneten Kunststoffe, die den an sie gestellten Forderungen genügen, können jedoch nicht den beim Vulkanisationsvorgang notwendigen Temperaturerhöhungen ohne Erweichung oder Verformung ausgesetzt werden. Die Verwendung von Polychlorfluoräthylen und ähnlicher Kunststoffe ist zwar möglich, werden jedoch aus preislichen Gründen praktisch ausscheiden müssen. The production of hoses takes place, for example, in the manner that a rubber hose is injected and provided with a fabric insert. To This method can easily be an unvulcanized hose with a Plastic core can be made from thermoplastic material. A significant one Difficulty arises, however, when the hose is vulcanized should be subjected. The plastic used is namely The requirement was made to be solvent-resistant, sprayable and at the same time flexible be. The plastics suitable for this purpose that meet the demands placed on them suffice, but cannot cope with the temperature increases required during the vulcanization process exposed without softening or deformation. The use of polychlorofluoroethylene and similar plastics is possible, but for reasons of price practically have to retire.

In der Erfindung wird nun ein Weg vorgeschlagen, der die Verformung oder Erweichung der geeigneten Kunststoffe während der Vulkanisation verhindert, und das Neue besteht darin, daß die Kunststoffseele während der Vulkanisation gekühlt wird. Durch den zu vulkanisierenden Schlauch wird Wasser geleitet, so daß die Kunststoffseele auf einer Temperatur unter dem Erweichungspunkt gehalten wird. Die Temperatur des Wassers und die Strömungsgeschwindigkeit ist je nach Wandstärke der Innenseele verschieden gehalten. Das Temperaturgefälle in der zu vulkanisierenden Schlauchwand bei der Vulkanisation erfordert einige Beachtung. Es ist zu überwachen, daß die Seele nicht zum Erweichen kommt und der am Kunststoff anliegende Kautschuk die nötige Vulkanisationstemperatur erreicht. Als Kunststoffe kommen Polyäthylen, Polyvinylacetat und ähnliche biegsame Kunststoffe in Frage, wenn die Schläuche zum Farbspritzen Verwendung finden. In the invention, a way is now proposed that the deformation or prevents softening of the suitable plastics during vulcanization, and what's new is that the plastic core is cooled during vulcanization will. Water is passed through the hose to be vulcanized, so that the plastic core maintained at a temperature below the softening point. The temperature of the Water and the flow velocity is different depending on the wall thickness of the inner soul held. The temperature gradient in the hose wall to be vulcanized at the Vulcanization requires some consideration. It is to be monitored that the soul does not softens and the rubber on the plastic has the necessary vulcanization temperature achieved. The plastics used are polyethylene, polyvinyl acetate and similar flexible ones Plastics in question if the hoses are used for paint spraying.

Die Durchführung des Verfahrens wird an einem Beispiel im schematischen Schnitt gezeigt. The implementation of the method is shown in an example in the schematic Section shown.

Nach üblichem. Verfahren wird ein Schlauch I mit einer üblichen Kautschukgewebeaußenwand 2 versehen. An Stelle von Kautschuk besteht die Seele jedoch aus Kunststoff3, wie etwa Polyäthylen. Zur Vulkanisation wird dieser Schlauch in eine Druckkammer 4 gebracht und bei I400 vulkanisiert. According to the usual. The method is a hose I with a conventional rubber fabric outer wall 2 provided. Instead of rubber, however, the core is made of plastic3, such as such as polyethylene. This hose is brought into a pressure chamber 4 for vulcanization and vulcanized at I400.

Gleichzeitig wird durch den Schlauch unter Vulkanisationsdruck Wasser geleitet, das die Erweichung der Seele verhindert. Beträgt die lichte Weite der Kunststoffseele IO mm, die Polyäthylenwandstärke 1,2 mm und die Gummigewebeschicht 2,5 mm, so muß das unter Druck durchgeleitete Wasser bei einer Strömungsgeschwindigkeit von 5o cm/sec (turbulente Strömung) eine Eingangstemperatur von etwa 600 C haben. Ein auf diese Weise gefertigter Schlauch ist für das Spritzen von Farblacken, wie Nitrocelluloselack oder Kunstharzlack, bestens geeignet. Die Haftung zwischen Kunststoff und Kautschuk kann durch Haftmittel verbessert werden, die in die Herstellung mit einbezogen werden.At the same time, water flows through the hose under vulcanization pressure that prevents the softening of the soul. Is the clear width of the Plastic core IO mm, the polyethylene wall thickness 1.2 mm and the rubber fabric layer 2.5 mm, the water passed under pressure must have a flow velocity of 50 cm / sec (turbulent flow) have an inlet temperature of about 600 C. A hose made in this way is for spraying colored lacquers, such as Nitrocellulose lacquer or synthetic resin lacquer, ideally suited. The adhesion between plastic and rubber can be improved by using adhesives included in the manufacture be included.

PATENTANSPRfJCHE: 1. Verfahren zum Vulkanisieren von-Kautschukschläuchen mit Gewebeeinlage und Kunststoffseele, dadurch gekennzeichnet, daß die Kunststoffseele während der Vulkanisation gekühlt wird. PATENT CLAIMS: 1. Method for vulcanizing rubber hoses with fabric insert and plastic core, characterized in that the plastic core is cooled during vulcanization.

Claims (1)

2. Verfahren nach Anspruch I, dadurch gekennzeichnet, daß die Kühlung unter Druck erfolgt. 2. The method according to claim I, characterized in that the cooling takes place under pressure.
DEP14026A 1955-04-28 1955-04-28 Process for vulcanizing rubber hoses with fabric insert and plastic core Expired DE958156C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP14026A DE958156C (en) 1955-04-28 1955-04-28 Process for vulcanizing rubber hoses with fabric insert and plastic core

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP14026A DE958156C (en) 1955-04-28 1955-04-28 Process for vulcanizing rubber hoses with fabric insert and plastic core

Publications (1)

Publication Number Publication Date
DE958156C true DE958156C (en) 1957-02-14

Family

ID=7364929

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP14026A Expired DE958156C (en) 1955-04-28 1955-04-28 Process for vulcanizing rubber hoses with fabric insert and plastic core

Country Status (1)

Country Link
DE (1) DE958156C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1196851B (en) * 1958-04-24 1965-07-15 Tecalemit Ges M B H Deutsche Device for the production of a flexible composite pipe with a pipe core made of thermoplastic, a pipe jacket made of natural or synthetic rubber and one or more intermediate layers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1196851B (en) * 1958-04-24 1965-07-15 Tecalemit Ges M B H Deutsche Device for the production of a flexible composite pipe with a pipe core made of thermoplastic, a pipe jacket made of natural or synthetic rubber and one or more intermediate layers

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