Outdoor sports fabric: it is generally made of nylon, polyester and other chemical fiber fabrics through post-processing: waterproof, calendering, dry wet coating, laminating and other processes, with waterproof, windproof, moisture permeability, air permeability, heat preservation, water pressure resistance, UV resistance and other functional fabrics. How to realize these functions? Function refers to the multi-channel process of post-processing to realize the product performance of textile fabrics. There are many links involved in post-processing. How to make these outdoor fabrics well? All the outdoor products of lantiya fiber technology must start from the source, which is the textile printing and dyeing factory.
1. Textile
(1) Yarn: the quality of the yarn determines the quality of the fabric, and the strength determines the tearing quality of the fabric. (yarn count of chemical fiber fabric is represented by D, which means Danielle number. Internationally, it is often used to indicate the fineness of chemical fiber and natural silk; tearing: the better the yarn strength is, the better the wear resistance is, and the better the function of protecting human body in the field environment) we cooperate with DuPont, NVIDIA, etc.
(2) Textile: in the process of weaving grey fabric by textile machinery, our lantiya fiber will adjust the machine to reduce the defects of grey fabric such as rungs, broken warp and weft, holes and buckles.
2. Printing and dyeing
When dyeing in a printing and dyeing factory, the color must be within the acceptable range, and there must be no Yin and Yang color, and the fabric surface quality is qualified
(1) Feel: soft, outdoor sports fabrics feel a little hard, the current development of new products to improve the feel, but outdoor leisure fabrics require more soft.
(2) Weft skew: according to ASTM d3882, dyed fabrics with effective width less than or equal to 3% are Grade A products, while dyed plaid and printed fabrics with effective width less than or equal to 2% are Grade A products. (if the weft skew exceeds the range of American Standard, it is easy to cause deformation and distortion after washing, and the grid shape of plaid printing cloth is asymmetric, which is not beautiful).
(3) Density: according to ASTM D3775, it is required that the density in warp and weft direction is less than or equal to ± 3%.
(4) Gram weight: ASTM d3776, it is required to be grade A within ± 3%.
(5) PH value: American Standard Test aatcc-81 requires 4.5-7.5 (the human body is slightly acidic, so the specified value is in the range of weak acid, which is suitable for human body. If it is alkaline, the skin is easy to be stimulated, dry and uncomfortable).
(6) Tear strength: ASTM d1424, according to the specific requirements of different kinds of fabrics (tear with kg, LB, Newton n to express the warp and weft test value of the cloth surface, tear quality affects the wear resistance of clothing).
(7) Elongation strength: ASTM d5034, according to the specific requirements of different kinds of fabrics (kg, LB, Newton n are used to express the warp and weft test values of the cloth surface, and the elongation strength will affect the wear resistance of the clothing).
(8) Seam slippage: ASTM d434 is tested according to the specific requirements of different kinds of fabrics (mm is used to express the test value, and the seam strength affects the slippage of garment seam).
(9) Shrinkage: American Standard aatcc-135 requires that the warp and weft direction ≤± 3% is grade a product (if the shrinkage exceeds 3%, it will affect the size deformation of clothing after washing several times).
(10) Rubbing color fastness: American Standard Test aatcc-8 requirements: dry grinding grade 4, wet grinding grade 4. (this requires the degree of fabric fading).
(11) Color fastness to perspiration: American Standard Test aatcc-15 requirements: discoloration grade 4, staining grade 4. (it is required to test cotton, nylon, polyester, wool, acrylic, acetate and other cloth pieces to see the color change and staining grade).
(12) Light fastness: American Standard Test aatcc-16e requirements: specific lamp 20 hours exposure level 4, 40 hours exposure level 3 (mainly resistant to sunlight, generally wearing outdoor clothing in skiing, mountaineering outdoor sports to prevent sunlight, not easy to change color, if in danger, its eye-catching clothing color, waiting for rescue convenience).
(13) Color fastness to machine washing: American Standard Test aatcc-61-2a requirements: discoloration grade 4, staining grade 4. (it is required to test cotton, nylon, polyester, wool, acrylic, acetate and other cloth pieces to see the color change and staining grade).
(14) Color fastness to water stains: American Standard Test aatcc-107 requirements: discoloration 4, staining 4. (it is required to test cotton, nylon, polyester, wool, acrylic, acetate and other cloth pieces to see the color change and staining grade). Remarks: AATCC: American Association of Textile Chemists and colorists (AATCC) is an unofficial organization to identify and analyze the color fastness, physical properties and biological properties of textiles. ASTM: (American Society for testing and materials, abbreviated as astmm) American Society for testing and materials.
Color fastness: it indicates the color fastness of fabric, the highest is grade 5, and the lowest is grade 1. American grey card standards is used to judge the color difference of staining and discoloration.
More than 14 well-known foreign brands, such as Columbia (the face), are required to be tested. However, some color sensitivity and dyestuffs can not overcome their own defects and technical difficulties, and some indicators are difficult or impossible to achieve (including the most advanced dyestuffs in the world, such as Delta, Ciba and Klein, and some dyestuffs can not meet the above test standards, which often require dyestuffs to issue reports to customers for confirmation). Some carcinogenic dyes containing azo dyes and chemical products with methanol exceeding the standard are clearly prohibited and harmful substances are prohibited.
Domestic and foreign low-end brands of outdoor clothing do not have high or detailed requirements, and even these brands do not fully understand the importance of physical performance index to human body protection. Of course, the quality requirements have a lot to do with the price.
