DE6913819U - INSULATED PIPE - Google Patents

Description

Industriele Onderneming

Wavin N.T.,

Zwolle / Netherlands

Händellaan 251 A 31 076 - β

The -3. April 1969

ⁿ Insulated pipe "

The innovation relates to an isolated one at its perimeter foam tube.

Ser-like pipes are known at sloh. However, they assign him Lack that moisture, gases and the like can act on the plastic foam from the outside. Daduroh is in In the course of time the foam is attacked in such a way that it can no longer meet the requirements placed on it, so that the arrangement of a new foam insulation he is required.

The innovation aims to create a pipe which does not have these disadvantages and whose foam material is not affected by the external influences on the pipe. In particular, aggressive, liquid media should be kept away from the foam. In the case of a pipe of the type mentioned, this is achieved in that the foam covering is provided on the outside with a moisture-insulating cover layer. In this way, an extremely thick outer layer is obtained, which prevents moisture and oases from penetrating into the floor covering, so that the covering cannot be attacked.

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The top layer is particularly easy on the sole to raise when the Deokeohioht, naoh a characteristic of the The hay consists of a tape made of thermoplastic material that is wound on the outside of the foam insulation individual turns are tightly connected to each other

In another expedient embodiment, the Deokeohioht made from a fully hardened plastic that is reinforced by glass fibers.

According to a preferred embodiment, the deck consists of a continuous, hollow plastic film that is clamped around the sole lining. This arrangement can be obtained when borrowed just before the foam covering is foamed thin plastic film existing pipe is sucked over the au insulating pipe. By foaming dee as well as that Tube and the foil available space is held the foil.

The innovation is explained in more detail on the basis of the drawing showing an exemplary embodiment.

The figure shows a perspective view of the renewal, insulated pipe 1, which is made, for example, of metal, made of fiber-reinforced plastic, such as polyvinyl chloride or Polyeaterglaafaaer or made of concrete. The insulating pipe 1 is provided with a foam layer 2 serving as insulation. TJm this foam sohioht, B.B. A polyvinyl chloride tape 3 is wound from Polyurethansohauffl. Successive turns 4 and 5 of this tape are connected to one another by gluing. This also applies to all further turns. on in this way one obtains a completely diohte deodorant

on the outside of the covering 2 the penetration of Prevents moisture and gases from entering the Sohaumstofffaelsg 2. When using Polyäthylenbond, the tape windings are connected by welding old one into the other.

The Deoksohioht 3 can also be made from a huge range exist, which is lifted onto the au insulating pipe. Ba the inside diameter of the sole is larger than that Tube outer Durohmeseer, the tree can swisohen the tubular solid and the su insulating tube with foam be hemmed in. Tube-shaped shrink films can also be used.

In a Bweokmäeiger way, the Deolcecnicht 3 consists of glass fibers, which after the foaming of the insulating layer 2 to wiokelt the plastic hem and then with one in the Heat-hardening bars can be coated. You can harden the Deoksohloht by using catalysts.

In a very advantageous embodiment, the deodorant 3 consists of a polyethylene tape 3 wrapped around the outside of the foam insulation 2, the overlapping parts of the windings 4 and 5 of which are blended with one another. This is achieved, for example, by wrapping polyethylene tape, which is still hot and white, and which has been extruded from an extruder, around the outside of the foam insulation. Because of the high temperature (2.B. 170 ⁰ O), the overlapping parts of the polyethylene tape weld together.

Claims (8)

A 31 076 - a Den 1. Insulated pipe with foam around its circumference, daduroh marked that the Sohaumbelag (2) outside with a feuohtlgkeitsisollerenden Deoksohioht (3) is provided. 2. Insulated pipe according to claim 1, daduroh gekennse ^ bhnet, that the Deoksohioht (3) consists of a thermoplastic band wrapped around the outside of the Sohaumisollerung (2) Synthetic material consists of its individual turns (4, 5) are interconnected. 3 Insulated pipe according to claim 1, characterized by that the Deoksohioht (3) consists of a clamped around the Sohaumisollerung (2), continuous sole-shaped plastic film. 4 Insulated pipe according to claim 1, characterized by that the Deokeohioht (3) is made of synthetic resin. 5. Insulated pipe according to claim 1, characterized by that the Deokeohioht (3) consists of a hardened, hardened synthetic hair, reinforced by egg fibers. * III Il It ■ I · Il I> I I, 1) 1 ι 'I I I I. I J I,; || III ii I 6. Insulated pipe according to one of claims 1 or 2, characterized in that the Deoksohloht (3) consists of one tape (3) wrapped around the outside of the Sohauolsollerung (2) consists of thermoplastic plastics material, whose overlapping parts (4, 5) are welded together. 7. Insulated pipe naoh Anspruoh 6, daduroh marked, ^ that the tape (3) is made of polyethylene. 8. Insulated pipe naoh one or more of the preceding claims, characterized in that the Cover layer (3) is gas-tight.