Polyester sewing thread

How to avoid breakage and lint problems with sewing thread?

During sewing work, breakage and lint problems in sewing threads will not only reduce work efficiency, affect the aesthetics and durability of the finished product, but may also lead to rework and increase production costs. To effectively avoid these problems, we need to have an in-depth understanding of the characteristics of sewing threads and take targeted measures from multiple links.

1. Reasonably choose the sewing thread material

The physical properties and applicable scenarios of sewing threads of different materials vary. Reasonable material selection is the basis for avoiding breakage and bleaching. As a common natural fiber sewing thread, cotton thread is soft and skin-friendly and has good moisture absorption, but has relatively low strength and is prone to breaking when sewing high-speed or sewing heavy fabrics. If you want to use cotton thread, you should choose products with moderate twist and high fiber quality, and avoid using sewing scenarios that require too high strength.

Polyester thread has high strength and good wear resistance. It is suitable for sewing various clothing and home textile products, especially when sewing thick fabrics such as denim and canvas, it can effectively reduce the occurrence of fracture. However, polyester wire has poor hygroscopicity and may cause wool due to increased friction in environments with high humidity. Therefore, when using polyester wire, you need to pay attention to the humidity of the working environment and take dehumidification measures if necessary.

Nylon wire has good elasticity and strong wear resistance. It is often used in parts that require stretching and elasticity, such as the cuffs and necklines of sportswear. However, the heat resistance of nylon wire is poor, and it is prone to become brittle and fracture under high temperature ironing or long-term sun exposure. Therefore, when choosing nylon wire, you should consider whether you will be exposed to a high temperature environment during subsequent use.

In addition to sewing threads made of a single material, blended thread combines the advantages of a variety of fibers, such as cotton-polyester blended threads, which not only have the softness of cotton threads, but also has the high strength and wear resistance of polyester threads, which can reduce the risk of breakage and wool to a certain extent. In practical applications, sewing threads of suitable materials should be selected based on the characteristics of the sewing fabric, the requirements of the sewing equipment and the use needs of the finished product.

2. Optimize the production process

The production process of sewing threads has an important impact on its quality. During the spinning process, the parallelism and straightness of the fibers are improved to ensure uniform distribution of the fibers, which can enhance the strength and surface finish of the sewing thread and reduce lint phenomenon. Advanced spinning equipment and reasonable spinning process parameters, such as controlling appropriate twist, if the twist is too low, the sewing thread will easily loosen and bleed; if the twist is too high, the flexibility of the sewing thread will be reduced and the possibility of breakage will be increased.

In the dyeing and post-treatment process, process conditions must be strictly controlled. During the dyeing process, excessive temperatures and strong mechanical effects may damage the fibers and reduce the strength of the sewing thread. Therefore, gentle dyeing processes and environmentally friendly dyes should be chosen to avoid excessive damage to the fibers. In the post-treatment process, by oiling, waxing, etc., a protective film can be formed on the surface of the sewing thread to reduce the friction coefficient between the fibers and reduce wool. At the same time, the lubricity of the sewing thread can be improved, so that it can pass through the needle hole more smoothly during the sewing process and reduce the risk of breakage.

3. Correct use and operation of sewing equipment

The status and operation method of the sewing equipment directly affect the use effect of the sewing thread. The size of the needle hole of the sewing machine should match the thickness of the sewing thread. If the needle hole is too small, the resistance will increase when the sewing thread passes, which will easily wear and break; if the needle hole is too large, it may cause the sewing thread to shake during the sewing process, causing lint and uneven stitches. In addition, check and replace the needles of the sewing machine regularly. The worn needles will scratch the sewing thread, causing lint and even break. Generally speaking, after sewing a fabric of a certain length, a new needle should be replaced.

Rationally adjusting the tension of the sewing machine is also key. If the tension is too large, the tension the sewing thread will increase and easily break; if the tension is too small, it will cause loose stitches, affecting the quality of the sewing. At the same time, it may also cause lint due to the increase in friction between the thread and the fabric. Before starting sewing, you should first conduct a seam test, and adjust the surface and bottom thread tension of the sewing machine according to the thickness and material of the fabric to make the stitches even and flat.

During the sewing process, avoid sewing too fast. When sewing at high speed, the tension and friction force applied to the sewing threads increase sharply, increasing the chance of breaking and lint. Especially when sewing thick materials or corners, the sewing speed should be appropriately reduced, so that the sewing thread has enough time to adapt to the changes in the fabric and reduce damage caused by pulling and friction.

4. Proper storage and management of sewing threads

The storage environment of sewing threads also affects its performance. Sewing thread should be stored in a dry and ventilated environment to avoid moisture and direct sunlight. A humid environment will cause the sewing thread to become moldy and deteriorate, reducing the intensity; the ultraviolet rays in the sun will accelerate the aging of the fibers, causing the sewing thread to become brittle and break. At the same time, sewing threads of different materials, colors and specifications are stored in a classified manner to avoid entanglement and friction between each other and prevent lint.

When using sewing thread, be careful to keep the spool clean and avoid dust and impurities sticking to the sewing thread. If you find dust or dirt on the surface of the sewing thread, you should use a clean soft cloth to gently wipe it. Do not pull or rub it hard to avoid damaging the sewing thread.

To avoid fracture and lint problems in sewing threads, we need to consider comprehensively from multiple aspects such as material selection, production process, equipment use, storage management, etc., and take effective preventive measures. Only in this way can we ensure that the sewing thread maintains good performance during use, improves the sewing quality and work efficiency, and produces high-quality sewing products.