Contitech Rubber Industrial Gumiipari Kft.

Phoenix Rubber Gumiipari Kft.

Contitech Rubber Industrial Kft.

Tamás Katona

Tibor Nagy

Imre Domonkos

Elemer Lantos

Jeno Kotai

Peter Gorgenyi

Gyula Beteri

Imre Füstös

István Grépály

Györgyi Szöllösi

Zalán Kádár

Gyula Bétéri

Urbán Mónika Bereczkné

Elemér Lantos

Lajos Kis

Laszio Nacsa

A high-pressure, large-bore bonded flexible rubber pipe resistant to aggressive chemicals and gases, particularly for conveying gas or oil, the flexible pipe having a liner made of poly(vinylidene-fluoride) homopolymer or copolymer wherein a hydrogenated nitrile rubber-based, peroxide-vulcanized rubber compoundis bonded to the poly(vinylidene-fluoride) liner, which has a Mooney 05, 150&#xb0; C. scorch time of at least 10 minutes. Further, a method for manufacturing such hoses, the method including vulcanization performed at a temperature of at least 160&#xb0; C.

Chemical and gas-resistant, high-pressure, large-bore bonded flexible rubber pipe and method for producing the same

The invention relates to a bonded high-pressure rubber hose comprising a flexible internal stripwound tube (), a liquid and gas tight liner () made from rubber or plastic, reinforcing plies embedded in rubber, and in specific cases an adhesively bonded coupling body (), the lower reinforcing ply or plies being disposed at an angle smaller than the so-called angle of equilibrium (35.26&#xb0;). The invention is characterized by that in addition to the primary liner the hose () comprises a liquid and gas tight secondary liner () disposed above the small angle reinforcing ply or plies (), and that the following inequality holds for the angle of lay of the lowest reinforcing ply () of the hose: &#x2022;where &#x2022;ais the angle of lay of the lowest small angle reinforcing ply () &#x2022;D s is the outside diameter of the internal stripwound tube () &#x2022;Dis the mean diameter of the lowest small angle reinforcing ply ().

Bonded high-pressure rubber hose, particularly for conveying gaseous media

The object of the invention is a method for building hoses reinforced with spirally laid fibers, where the hose under construction () undergoes both rotation and advancing motion relative to the laying head (), and where the reinforcing fibers are unwound from drums (). The drums () are rotated about two axes, the first axis being the principal axis of the drums (A) and the second axis (B) being nearly parallel with the direction in which the fibers are unwound, where the direction of rotation of the drums () about the second axis (B) is the same as the direction in which the hose under construction () is rotated. The apparatus for carrying out the method comprises a laying head () and a drum support platform (), where the hose under construction () undergoes both rotation and advancing motion relative to the laying head (), and where the reinforcing fibers () are unwound from drums () through a circular fiber guide () The further object of the invention is a method for building hoses reinforced with spirally laid fibers, wherein the reinforcing fibers () are laid on the hose surface through a rotating self-adjusting circular fiber guide () arranged substantially coaxially with the hose. The invention also relates to an apparatus for carrying out the above method.

Method and apparatus for manufacturing fibre-reinforced hoses

A long-length hose spliced from two or more hoses containing an inner sealing layer, at least two spirally laid reinforcing plies, and a cover. A liner forming the inner sealing layer is formed by leak-tight splicing of liners of hoses to be spliced and the reinforcing plies are embedded into filling/adhesive material inside of a rigid outer sleeve, at the location of the splicing.

Spliced long-length hose and method for splicing hoses

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Algyö, Hungary

Tamás Katona