Cationic coarse-needle single-sided velvet: full analysis of principles, processes, applications and trends

Cationic coarse-needle single-sided fleece is a functional fabric made from cationic modified polyester as the core raw material, through coarse-gauge weft knitting technology and single-sided fleece treatment. The core principle lies in the synergy between raw material characteristics and technology: cationic fiber contains special cationic groups, which can be efficiently combined with cationic dyes to achieve uniform dyeing, full color and high color fastness; coarse-knitted weaving forms a loose coil structure, and is matched with single-sided brushing / The sanding process gives the fabric a thick and soft suede feel, while retaining the advantages of polyester's wear resistance, wrinkle resistance, and dimensional stability, solving the pain points of uneven dyeing and easy lint loss of ordinary single-sided velvet.

In terms of technology, the weft-knitted coarse-needle circular knitting machine is used to weave. First determine the raw material ratio (commonly pure cationic polyester or cationic polyester + a small amount of spandex, gauge 16G-24G), and select medium-thick yarns to ensure a suede texture; during weaving, single-sided woolen knitting needles are arranged to form a basic cloth surface, which is then single-sided brushed / The sanding process forms a uniform pile layer on the surface, followed by pre-shrinking and desizing to remove impurities. A cationic high-temperature and high-pressure dyeing process is used to avoid color blooms. Anti-pilling, anti-static, and soft finishing are then used to optimize the feel. The weaving tension and dyeing and finishing temperature are strictly controlled throughout the process to prevent the pile layer from falling off and deforming the fabric, ensuring dimensional stability and durability of the pile surface.

Application scenarios widely cover B2B Field: Apparel industry is suitable for autumn and winter sweaters, coats, home clothes, children's clothing, thermal underwear, etc. The suede's warm and skin-friendly properties are suitable for close-fitting and outdoor wear; in the home textile field, it can be used for blankets, pillow cases, sofa covers, baby bedding, etc. It is soft, comfortable and It has strong decorative properties; in terms of industrial fabrics, it is suitable for outdoor tent thermal insulation layers, cold-proof glove fabrics, medical thermal care clothing, pet supplies, etc., taking into account durability and warmth requirements; it can also be used as the lining of shoes, hats, and bags to improve comfort and warmth.

In terms of maintenance, the fabric supports machine washing and hand washing. It is recommended that the water temperature does not exceed 30°C. It is recommended to use neutral detergent and avoid bleach, high-temperature drying and exposure to the sun (high temperatures can easily cause the suede layer to harden, fall off, and fade the color). During industrial batch washing, the speed needs to be controlled to prevent suede pilling and snagging; low-temperature ironing (the temperature does not exceed 110℃) and a cloth is required to avoid pressing the suede directly; allow natural ventilation when drying, and store it away from sharp objects to prevent snagging and lint loss; it has strong anti-wrinkle and wear-resistant properties, and can maintain stable suede shape and color after multiple washes, and has low maintenance costs.

At the technical level, the core focus is on three major directions: upgrading of cationic modification technology, optimizing the fiber molecular structure to improve dyeing efficiency and color fastness, and reducing the amount of dye; optimization of the raising process, through precise control of the strength and speed of the suede, improving the uniformity and abrasion resistance of the suede, and avoiding lint loss; integration of functional composite technologies, such as adding moisture-wicking finishing agents, antibacterial agents, and antistatic agents to expand applicable scenarios for fabrics; testing procedures strictly follow GB/T 2660, GB/T 3921, GB/T 24252 and other standards to ensure that indicators such as color fastness, abrasion resistance, pilling grade, etc. meet the standards and meet the requirements of industrial grade use.

In terms of trends, environmental protection has become the mainstream, and the application proportion of recycled cationic polyester and degradable raw materials has gradually increased, in line with the concept of green production; the demand for functional compounding has increased, such as warmth + waterproof, breathable + UV resistance, antibacterial + Composite functional fabrics such as antistatic are highly favored; customization has been upgraded significantly, and orders for small batches and personalized suede density and color designs have increased, adapting to the needs of fast fashion and niche brands; application scenarios have extended to areas such as smart wear (such as thermal fabrics for wearable devices), high-end medical care, and automotive interior thermal insulation layers; at the same time, the application of digital weaving and digital dyeing technology will further improve production efficiency and product consistency, and promote the development of fabrics in the direction of "environmental protection, multi-function, customization, and high performance".