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The comprehensive indicator for assessing the quality of the sewing thread is seamability
- Apr 17, 2018 -

The comprehensive indicator for assessing the quality of the sewing thread is seamability. Sewn-ability refers to the ability of the sewing thread to be sewn and formed into a good stitch under specified conditions, and to maintain certain mechanical properties in the thread. The advantages and disadvantages of seamability will have a direct impact on the production efficiency, sewing quality and wearing performance. According to national standards, the grade of sewing thread is divided into first-class goods, second-class goods and foreign goods. In order to make the sewing thread has the best sewability in the garment processing, and the sewing effect is satisfactory, it is very important to correctly select and apply the sewing thread. The correct application of sewing thread should follow the following principles:

 (1) Compatible with the characteristics of the fabric: The sewing thread and the raw material of the fabric are the same or similar, in order to ensure the unity of shrinkage, heat resistance, abrasion resistance, durability, etc., and avoid the appearance of shrinkage due to the difference between the line and the fabric.

 (2) Consistent with the type of clothing: For special-purpose garments, sewing threads with special functions should be considered. For example, stretch-type garments require elastic sewing threads, and fire-fighting suits require heat-resistant, flame-retardant and waterproof-treated sewing threads.

(3) Coordinating with the stitch pattern: different stitches are used in different parts of the garment, and the sewing thread should also be changed along with it. For example, a bulky or deformed line is required for the overlock, and a large-extensibility line should be selected for the double stitch. The seams and shoulder seams should be firm, while the buckling eyeliner should be wear-resistant.

 (4) Consistent with the quality and price: The quality and price of sewing thread should be consistent with the grade of clothing, sewing thread with high quality and high price for high-end clothing, and sewing thread with medium quality and moderate price for middle and low-grade clothing. In general, the grades of sewing threads, raw materials used, and the fineness of yarns are all shown on the labels of sewing threads, which helps us to reasonably select and use sewing threads. Sewing thread labels usually include four items (in order): Yarn thickness, color, raw materials, processing methods, can be used in the form of "60/2X3 white polyester thread".