In the manufacturing process, sewing work is very critical, which directly affects the quality of the entire waterproof product. All integrated designs have higher requirements for sewing, which is also the key to determining quality. Ordinary raincoats can be sewn by hand. The type of raincoat must be combined with mechanical equipment and manual sewing to meet market demand. Then, what aspects should be paid attention to in the sewing link, the following will introduce you in detail:
The first is the thread alignment problem. All integrated designs of a one-piece raincoat require precise control of the sewing thread, and all sewing work must be completed at the same time, so that the integrity of the raincoat can be maintained, and the partial sewing method cannot be used, which will lead to walking. The line is uneven, and the raincoat has poor molding effect, and it is difficult to guarantee the quality of the finished product. Although manufacturers use mechanical equipment to sew, they must properly adjust the actual wiring accuracy of the equipment and combine small problems with manual sewing. Control within an acceptable range to ensure product quality.
Secondly, repeated sewing. Many manufacturers build a one-piece raincoat. In order to avoid the problem of one-piece gaps, repeated sewing is used to deal with it. Although this effect does not play an important role, it is easy to aggravate the seam. There is a risk of too much thread, such as irregularities, so it is formed immediately during the sewing process, or necessary repairs are combined with manual labor to complete the sewing requirements.