LU87238A1 - Sewer-pipe repair method - uses synthetic resin tube reinforced by honeycomb support - Google Patents

Abstract

The method repairs a defective sewer-pipe, imparting chemical and mechanical strength in addition to rendering it watertight. A reinforced synthetic resin tube (3) enclosed in a watertight flexible one (1) is installed over the entire internal pipe surface. The resin tube is reinforced by a honeycomb-section support (2). Its cells can be open (2'), closed (2"), or alternately open and closed.

Description

DESCRIPTIVE MEMORY FILED IN SUPPORT OF A PATENT INVENTION APPLICATION IN THE GRAND DUCHY OF LUXEMBOURG

Ardel International S.A.

Forum Royal, 16 rue'des Bains Boulevard Royal-Avenue de la Porte Neuve Luxembourg

Method for making a degraded sewer pipe located below the level of the water table waterproof and mechanically and chemically resistant. -

The present invention relates to sewer pipes and more generally existing network pipes requiring the rehabilitation of their mechanical performance to crushing, breakage and sealing and being below the level of the water table with, as a result , groundwater penetration inside the pipeline.

According to a patent application jointly filed by the holder, a process for making a degraded sewage pipe waterproof and mechanically and chemically resistant consists in applying over all the internal surface of the pipe to be treated with a synthetic resin pipe. reinforced and lined with a tube made of waterproof flexible material, the frame of the synthetic resin pipe consists of a honeycomb support.

The result of this process has proved satisfactory, but it has appeared advantageous according to the present invention to provide this process with an improvement, in particular in the case of pipes degraded to the point of giving rise to large leaks of penetrating water.

According to the invention, the improved process is characterized in that the assembly, a flexible flexible tube and a pipe of synthetic resin with its honeycomb support, is covered with a very fine filter screen, so as to keep the resin in place during the implementation time.

According to this improved process the filter screen allows the resin to sweat through after processing and before polymerization.

Thanks to the resin transpiring through the sieve, the pipe sticks.

To illustrate the invention, the attached schematic drawing shows, by way of example only, in:

Figure 1 a half portion of synthetic resin pipe with watertight flexible tube, honeycomb support and filtering screen before implementation, and -

Figure 2 the same representation as in Figure 2, after the implementation applied to a pipe.

FIG. 1 shows the waterproof flexible tube 1, the synthetic resin pipe 2 with its frame 3 consisting of a honeycomb support with open cells and the filter screen 4.

In FIG. 2, the assembly is applied to the internal wall of a pipe 5 and, before polymerization, the resin diffuses through the screen 4 and serves as a fastening on the internal wall of the pipe and in the cracks thereof. .

Claims (3)

CLAIM Method for making a degraded sewer pipe waterproof and mechanically and chemically resistant, consisting in the application over the entire internal surface of the pipe to be treated of a pipe (3) made of reinforced synthetic resin and lined with a material tube flexible waterproof (1), the frame of said. synthetic resin pipe (2) being constituted by a honeycomb support (3), characterized in that the assembly, tight watertight tube (1) and resin pipe (2) with its honeycomb support (3), is covered with a tube consisting of a very fine filter screen (4), so as to allow the resin (2) to sweat through said screen (4), after processing and before polymerization.