2X2 Ribbed Knitted Plain Trim Material For Garment Hems

What type of knitting machine is used to knit elastic rib hems? How to control the elasticity of the ribs during knitting? Are there specific process parameters or technical means?

When knitting elastic rib hems, the company mainly uses computerized flat knitting machines imported from Germany. This type of flat knitting machine is known for its high precision, high efficiency and versatility. It can handle a variety of complex knitting patterns and structures, and is particularly suitable for the production of rib fabrics that require precise control of elasticity and density. Computerized flat knitting machines can achieve highly automated production through computer program control, which not only improves production efficiency but also ensures product consistency and stability.
As a supplement, domestic flat knitting machines also play an important role in the company's production line, especially when processing some rib products with large output and relatively standard elasticity requirements. Domestic flat knitting machines provide flexibility for the company's production with their cost-effectiveness and strong adaptability.
Controlling the elasticity of the ribbed hem is one of the key technologies in the knitting process. Elasticity is mainly determined by the selection of yarns, the design of the knitting structure, and the post-processing process.
Yarn selection: The company uses high-quality raw materials such as cotton, polyester, and wool. These yarns have a certain degree of elasticity in themselves, but more importantly, their elasticity and recovery can be further enhanced through blending or special treatment. For example, polyester fiber is often used in rib products that require higher elasticity due to its good elastic recovery ability.
Weaving structure design: During the weaving process, the elasticity of the rib can be precisely controlled by adjusting the length, density, and arrangement of the coils. Computerized flat knitting machines allow programming of different weaving patterns, such as plain, rib, jacquard, etc., each of which contributes differently to elasticity. The rib structure itself has good lateral elasticity due to its staggered coil arrangement, and its elasticity can be further fine-tuned by adjusting the width of the rib and the tightness of the coils.
Process parameter setting: The operating parameters of the knitting machine, such as the type of needles (such as round needles, flat needles), the speed of the loom, tension control, etc., all have a direct impact on the elasticity of the rib. With many years of production experience and combined with advanced equipment, the company is able to accurately set these parameters to achieve the ideal elastic effect.
Post-processing process: After weaving, the ribbed fabric needs to go through heat setting, pre-shrinking and other steps to stabilize its size and elasticity. Heat setting uses high temperature treatment to make the cross-linking between fibers more stable, thereby enhancing the elasticity and shape retention of the fabric. Pre-shrinking treatment is to reduce the shrinkage rate of the fabric after washing and maintain its dimensional stability.
When weaving elastic ribbed hems, the company uses a series of specific process parameters and technical means to ensure the high quality of the product:
Precision tension control: Through the precision tension control system of the computer flat knitting machine, the tension of the yarn can be ensured to be consistent during the weaving process, avoiding elastic differences caused by uneven tension.
Intelligent weaving program: Using advanced CAD/CAM systems, we design and optimize weaving programs to achieve precise weaving of complex patterns and structures, while ensuring the elasticity and appearance of the ribs.
High-quality yarn pretreatment: Before weaving, the yarn is pretreated, such as twisting and twist setting, to enhance its elasticity and wear resistance.
Strict quality testing: The company has a complete laboratory equipped with high-precision instruments such as color fastness tester, anti-pilling tester, HP value tester, etc., to strictly test the performance indicators of ribbed hems to ensure that they meet international standards and meet customers' stringent quality requirements.