The quality issues of textiles are related to the service life and performance of products, as well as the health and safety of consumers, and have always been a focus of concern for both consumers and businesses. Valuing common non-conforming items in textile testing can help production enterprises improve the quality of textile products, meet consumer needs, and promote high-quality development of the industry. According to statistics, common unqualified items mainly include color fastness, fiber content, pilling, joint performance, and pH value.
Color fastness
The color fastness of textiles (referred to as “color fastness”) refers to the degree of fading of dyed or printed fabrics after being subjected to external factors during use or processing.
The factors that affect the color fastness of textiles are mainly divided into internal factors and external factors. Internal factors refer to the degree of adhesion between dyes and fibers, such as fabric surface morphology, fabric structure, and dye activity; External factors refer to external forces or environmental conditions applied to a product during use, such as water stains, sweat stains, light exposure, rain, etc. Enterprises can improve the color fastness of their products through pre-treatment, post-treatment, and dye selection. For example, before dyeing, the fabric can be pre treated with techniques such as silk finishing, singeing, boiling, washing, and drying, while during post-treatment, the fabric can be thoroughly soaped.
Fiber content
The common cases of unqualified fiber content are mainly divided into three categories: low content (fibers with a fiber content ratio of 0.5% to 3% (including 3%) are marked as unqualified), content ratio (fiber content ratio exceeds the allowable range), and type qualitative (fiber type qualitative error), among which type qualitative error is often accompanied by unqualified content ratio.
The main reason for the unqualified fiber content testing is that there is a lack of professional fiber content testing personnel and equipment within the enterprise, and there is no corresponding quality control, relying only on experience to estimate or directly falsify fiber content data; Secondly, some companies knowingly label low-priced fibers as high priced fibers or increase the proportion of high priced fibers in order to raise product prices. Production enterprises need to equip themselves with professional testing personnel and equipment, pay attention to the fundamental learning of textile materials and related testing standards, and enhance their quality control capabilities.
Pilling
Common underwear, jackets, sofas, bedding, etc. in daily life all have pilling and pilling phenomena, which seriously affect the comfort and beauty of wearing. The pilling performance of fabrics is influenced by multiple factors such as fiber raw materials, spinning and weaving processes, fabric structure, dyeing and finishing processes, and daily wear. Production enterprises need to comprehensively consider multiple factors to improve the anti pilling performance of the final product. If the short fiber content is appropriately reduced in the selection of raw materials, process parameters are reasonably set during the spinning process, and dyeing and finishing processes are reasonably arranged to improve the anti pilling performance of textile products.
Seam Performance
Seam performance is an important indicator for measuring seam quality, mainly referring to the ability of the yarn at the sewing point of the fabric to resist external tension after being sewn. Slips, degree of seam slippage, seam strength, and yarn slippage at seams can all reflect the seam performance of fabrics.
The seam performance of fabrics is related to many factors such as the type and characteristics of fibers, the structure of the fabric, manufacturing processes, and post finishing. Improving the seam performance of fabrics requires enterprises to pay attention to the selection of fabrics, and improve manufacturing processes from spinning, weaving, and sewing according to the characteristics of fabrics, in order to enhance the seam performance of fabrics.
PH value
The pH value of healthy skin is 5.0-5.6, which belongs to weak acidity. Acidic environment can inhibit the growth and reproduction of certain pathogenic bacteria, prevent the invasion of external bacteria, and protect the skin from infection. If textiles are too acidic or alkaline, they will damage the weak acidic environment on the surface of the skin upon contact with the body, affecting skin health. After the skin loses its protective function, itching or allergies may occur, and bacteria are more likely to enter the body.
The pH value of textiles is influenced by multiple factors such as production water, dyes, printing and dyeing processes, and fabric characteristics. Improving the qualification rate of fabric pH value requires enterprises to equip professional testing personnel and equipment, strengthen the quality awareness of relevant quality control personnel and the learning and training of textile standards, attach importance to the intrinsic quality of printing and dyeing products, optimize production processes, and strictly control every process.
Dongguan Liansheng Non woven Technology Co., Ltd. was established in May 2020. It is a large-scale non-woven fabric production enterprise integrating research and development, production, and sales. It can produce various colors of PP spunbond non-woven fabrics with a width of less than 3.2 meters from 9 grams to 300 grams.
Post time: Jan-23-2025