Antibacterial and warm charcoal silver fabric process design and performance
Antibacterial and warm charcoal silver fabric process design and performance
Combining the printing hot stamping process and applying the carbon silver film to the woven four-way elastic fabric, the fabric not only has the characteristics of heat storage and insulation, antibacterial and deodorizing, but also has the characteristics of fashion, small friction coefficient, windproof and good elasticity. This product was developed using activated carbon powder applied to woven fabric surfaces. Carbon powder material is a biological material, and the material itself is non-toxic and harmless. Adding charcoal powder to PU resin can make the derived textiles have moisture absorption, deodorization, antibacterial and antibacterial properties, negative ions, anti-ultraviolet, far-infrared rays, heat storage and warmth preservation.
In addition, silver powder is also added to PU resin. Silver powder is the common name of “aluminum powder”. It is light, has high buoyancy, strong covering power, and has good light and heat reflection properties. It can also make the derived textiles have heat storage and warmth retention properties. Super strong metallic look. 1 Selection of materials and equipment 1.1 Specifications of woven four-sided elastic base fabric Warp and weft yarn raw materials: polyester 94% spandex 6%; warp and weft yarn density: 75D+40D×75D+40D; warp and weft density: 480×430 yarns/10cm; gram weight : 105g/m2; Fabric structure: plain weave. 1.2 Selection of transfer film substrates Currently, the main thermal transfer film substrates include OPP, PET, PVC, and CP. The OPP film base material is smooth, highly transparent, and has temperature and weather resistance. Therefore, this product uses PU resin with carbon powder and silver powder added to the cloth surface for imprinting through the OPP transfer film.
Abstract: The article introduces an antibacterial and warm charcoal silver fabric designed using hot stamping and laminating technology, and gives a detailed introduction to the selection of base fabric, product specifications, process flow, process parameters and key technologies, and then attaches it to the fabric. The combined fabrics were tested with reference to standards for their antibacterial properties, tearing strength, appearance changes after washing, abrasion resistance, and thermal insulation properties. Through testing, it was found that the carbon silver layer of the fabric did not fall off significantly after washing, and the antibacterial rate against Staphylococcus aureus reached 97.9%. The warp tear strength was 13.4N, the weft tear strength was 12.9N, and the wear resistance was greater than 5000r. The thermal resistance is 0.013m2·K/W and the moisture resistance is 25.1m2·Pa/W. It can be seen from the test data that the designed functional fabric meets the standard technical requirements and meets the customer’s usage needs. Keywords: carbon silver fabric; design; performance; test 2 process flow 2.1 process flow The production process flow of this product is: rubber mixing → OPP film → gluing → semi-drying → lamination → aging in the aging room → peeling off. 2.2 Laminating process (1) 1 Laminating process 2.3 Peeling process (2)
2 Peeling process 3 Process parameters and key technologies 3.1 Determination of hot stamping pattern Hot stamping or silver hot stamping on fabrics is a technology developed in recent years. It can change the style of fabrics. The process uses traditional hot stamping. technology. Material selection varies, allowing for metallic and silvery sheen looks, both of which can enhance the functionality and fashion of clothing fabrics.
Therefore, applying silver foil technology to the composite of woven fabrics can not only enhance the fabric’s thermal insulation, antibacterial and deodorizing properties, but also make the fabric fashionable, beautiful, and easy to put on and take off. Before they appear in batches on the market, the successful development of such products can meet the market demand for such heat storage, insulation, antibacterial and deodorant products at a lower cost. When determining the hot stamping pattern, you should first consider the change in carbon silver film coverage on the fabric caused by the pattern design. The size of the pattern determines the amount of glue, and the density of the pattern determines the thermal insulation performance of the product and the feel of the fabric. Therefore, the design of the flower model is very important. This product has a silver layer on the top of the woven base fabric. The pattern used is a three-dimensional window grille (3). The inner layer of the fabric is bonded to an OPP film. The film is hot-stamped with a honeycomb-shaped carbon silver film (4). . 3 surface layer silver hot stamping case 4 inner layer OPP film hot stamping case 3.2 Determination of temperature The temperature mainly includes the hot stamping temperature, oven temperature and laminating wheel temperature. Temperature has a great influence on the quality of hot stamping. If the temperature is too low, the melting will be insufficient, resulting in the hot stamp not being able to go on or not being strong; if the temperature is too high, the hot-melt film will melt, causing the aluminum film to adhere around the imprint. It will also cause the dyeing layer and carbon silver film layer to oxidize, causing the hot stamping product to lose its metallic luster and reduce its brightness. According to the performance of the carbon silver film, hot stamping pressure, and hot stamping speed, the hot stamping temperature range during production of this product is 70 to 150°C. The oven temperature is 40~45℃, and the laminating wheel temperature is 100~120℃. 3.3 Determination of laminating pressure The function of laminating pressure is to ensure that the TPU film can adhere to the substrate. The laminating process itself is the process of using temperature and pressure to stick the fabric to the substrate. There are three aspects of force during the entire fitting process,
One is the peeling force generated when the film is peeled off from the base film layer,
The second is the adhesion between the film and the substrate,
The third is the fixing power of the textile surface. Therefore, the bonding pressure is greater than the pressure of general fabric lamination. If the laminating pressure is small, the fabric will not adhere to the substrate, resulting in poor or weak lamination; if the pressure is too high, the compression deformation of the fabric and substrate will increase.
When designing the laminating pressure, the laminating temperature, machine speed and the properties of the carbon silver film itself should be comprehensively considered. When the lamination temperature is low, the lamination speed is fast, the dye concentration of the textile surface of the object to be ironed is high, and the smoothness of the textile is low, the pressing pressure should be increased, and vice versa. The bonding pressure of this product is 6.0~6.5kg. 3.4 Determination of hot stamping speed. The contact time between the carbon silver film and the substrate is determined by the hot stamping speed, and the contact time determines the hot stamping fastness. The speed must be consistent with the pressure and temperature.There are disadvantages in responding too fast or too slowly. The hot stamping speed of this product is 15~20m/min. 3.5 Determination of tension control The tension control of the carbon silver film must be appropriately tight. If it is too tight, it will easily lead to missing pens and broken paintings on the surface of the carbon silver film. If it is too loose, it will easily cause the film surface to fold, resulting in dead fold marks on the silver foil. The cloth surface tension also needs to be controlled with an appropriate tightness. If it is too tight, it will easily cause the hot stamping case to shrink, causing the shape of the case to become hairy and cracked. If it is too loose, it will easily lead to dead folds and indentations when the cloth surface and the film are attached.
Therefore, it is extremely important to reasonably control the feeding tension and take-up tension of cloth and film. 3.6 Glue formula The glue formula determines the fastness of hot silver. The adjustment of the formula and the process 1 Glue formula g Reagent name and dosage Polyurethane adhesive 100 MEK (methyl ethyl ketone or methyl ethyl ketone) 120 bridging agent 8 silver powder 20 carbon powder 10 accelerator 3 Pressure roller, cloth guide roller, cloth guide roller, finished cloth film (separation film), oven, glue basin, OPP film, semi-finished product with the film pasted, laminated semi-finished product, gluing roller, heated laminating wheel, temperature, speed, pressure and pattern. The choice of solvent determines the temperature and speed. If you choose a volatile solvent, you need to lower the temperature. The proportion of solvent added determines the viscosity and pressure of the glue according to the different flower types.
Therefore, the solvent ratio and solvent type in the glue are determined according to the flower type, as shown in 1. 3.7 Determination of ripening temperature and time The ripening temperature and time determine the fastness of hot silver. In order to improve the washability and soft feel of hot silver, the aging temperature and time of this product are 65°C and 12 hours respectively. 4Performance test. Silk, test results project standard qualification index test results judgment washing appearance (washed 10 times) (grade) AATCC124-2011-3.0 qualified color fastness to soaping (grade) AATCC61>4 discoloration: 4.5 qualified staining: 4.5 abrasion resistance test (r) AST-MD4966-2010>5000>5000 Qualified tearing strength (N) AST-MD1424-2009≥10 Warp direction: 13.4 Qualified weft direction: 12.9 Physiological comfort B/T11048-2008 Thermal resistance (m2·K/ W) ≥ 0.010.013 Qualified moisture resistance (m2·Pa/W) ≥ 2325.0 Antibacterial rate (Glucococcus aureus) (%) GB/T20944-2008 ≥ 7097.9 Qualified China Textile Industry Federation Testing Center Technical Service Co., Ltd. tested , the test standards adopted and the corresponding indicators and test results are shown in 2. It can be seen from the test data in 2 that the designed products meet the technical requirements stipulated in the standard in terms of washable appearance, color fastness to soaping, abrasion resistance, strength, hot and humid comfort, antibacterial properties, etc., and can satisfy customers normal use requirements and in line with the original intention of the design. 5 Conclusion The antibacterial and warm carbon silver fabric uses woven four-way elastic fabric as the base fabric and the carbon silver film as the hot silver material. According to the self-designed shape, the silver hot composite process is used to transfer the carbon silver film to the woven fabric, giving it a The fabric has excellent antibacterial, deodorizing, heat storage and insulation functions, and the product has excellent properties such as fashionability, smoothness and easy to put on and take off. This functional fabric is the first choice for making windproof jacket linings, jacket linings, and golf jacket linings. sfaqwerw
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