There are many types of tarpaulins, among which the waterproof tarpaulins are used more frequently, and it is inevitable that they will be damaged if used more. At this time, if the damage is not very serious, the tarpaulins can be used continuously after a brief repair. However, in order to ensure the role of application, it is necessary to meet the following requirements for the repaired tarpaulins:
The distance between the periphery of the patch and the periphery of the breach or hole shall be greater than 40mm, and the shape of the patch is generally circular or square, and the four corners of the square shall be circular arc In case of extra large breach or hole, it can be cut according to the shape of the breach or hole.
It is not allowed to have missed repair or coating, and it is not allowed to replace welding repair or glue repair with needle seam. However, if the repair method is welding repair or glue repair, it is necessary to satisfy these conditions.
The bonding strength at the repair site shall not be less than 25n/30mm, and the water lifting test at the repair site shall not allow water seepage, water seepage and water leakage.
The breach shall be butt jointed by technology. After butt jointing, it shall be flat and aligned. The spacing of stitches shall be 14-18 /100mm The patch cloth to be repaired after technical docking is 100mm~120mm wide Holes cannot be rigidly butted.
The bonding between the patch and the tarpaulin shall be flat, close and firm, without desoldering, glue opening and warping, without caking, and the frosted part of the patch shall not be exposed.
In a word, the waterproof tarpaulin after repair must be satisfied with the above conditions before it can be used again, otherwise it cannot be used. If the above methods cannot be repaired, then it is necessary to replace the new waterproof tarpaulin.