Description of Process
The Tiger Patch liner is a no-dig repair method for spot defects in pipelines.

A fibre reinforced plastic (FRP) patch is wound around a rubber sleeve and placed at the repair point using a CCTV camera unit to correctly position the patch over the defect.

The sleeve is then inflated and held in position until the curing process is complete (approximately 1 hour).

Typical Applications
The Tiger Patch liner is suitable for most repairs of cracked, broken or dislocated sewer and stormwater pipelines.

Installation
Prior to installation of the Tiger Patch, the repair location needs to be surveyed with a CCTV camera to determine the extent of cleaning / tree roots / sharp edges etc that need to be removed.

Once preparatory work is complete, the fibre reinforced patch is assembled around an inflatable rubber sleeve in one of Kembla’s specialised rehabilitation vehicles.

It is then winched to the point to be repaired and positioned using a CCTV camera unit to correctly position the patch over the defect.

The sleeve is then inflated with low pressure and held in position until hardening is complete.  The damaged point is reinforced and also sealed by the patch, which adheres tightly to the inner surface.  It is possible to undertake the work in live conditions while (limited) effluent is flowing through the pipe.

Available Sizes
The Tiger Patch liner can be used on pipes from 100mm to 1,000mm diameter.  The system is designed for spot repairs 400mm to 1200mm long (per patch) and patches can be overlapped to achieve a longer repair.

Materials
The materials used for the Tiger Patch are primary, hardening and accelerating agents applied to glass fibre, all of which have been developed specifically for this purpose.

 Tiger Patch Brochure