When repairing color striped tarpaulins, double stitches should be used, the gap between the outer seam and the patch should be 15mm to 20mm, and the distance between the two stitches should be 10mm. The stitches are firm and straight, the needle thread is 14 to 18 stitches every 100mm, and the number of stitches is more than 3 stitches. Apply waterproof glue on both sides of the needle hole, use a linear double-threading machine on both sides of the pressure rope cloth maintenance, and the distance between the two needles of the pressure rope should be at least 45 mm. The middle of the pressing rope cloth should be properly arched to facilitate the passage of the rope and the needle, and the stitch distance of the needle should be at least 50 mm. After maintenance, the center of the belt should be properly arched to facilitate the passage of the belt, and a suspended water test should be performed at the seam of the color strip tarpaulin.
Generally, the higher the price of the same area of ​​tarpaulin products, the better the quality will be. If you choose a tarp, you can test it with water, pull out a good quality tarp product by hand, and sprinkle it with water to see if it leaks. The problem is the same, generally the higher the density, the better the strength of the tarpaulin. In other words, the quality is good. You can also see the shape of the tarp, if the surface is rough, the quality will go down, so if you use a tarp, look at the roughness first.