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Views: 14 Author: Site Editor Publish Time: 2025-02-08 Origin: Site
■Outer layer flame retardant treatment: The outer layer is made of intrinsic flame retardant fiber fabrics such as aramid. During the production process, these fabrics will undergo special flame-retardant finishing, such as impregnation, coating and other processes, to make the fabric's flame-retardant performance even better, ensuring that damage length, burn-on time and other indicators meet standard requirements, and ensuring that they will not easily burn or melt and drip in fire sources.
■Waterproof and breathable layer technology: The waterproof and breathable layer mostly uses polytetrafluoroethylene (PTFE) microporous membrane composite flame-retardant material non-woven fabric. Through a special composite process, the PTFE microporous membrane is closely combined with the non-woven fabric, so that the diameter of each micropore of the microporous membrane is controlled within a range that can prevent water droplets from penetrating and allow water vapor to escape, achieving good waterproof and breathable performance.
■Insulation layer processing: Insulation layers often use relatively thick flame-retardant non-woven fabrics. In order to enhance the thermal insulation effect, it may be fluffed or stacked in multiple layers to increase the air content between fibers and use the low thermal conductivity of air to prevent heat transfer. In addition, special fiber blending technology is also used, such as mixing in ceramic fibers, etc., to further improve the thermal insulation performance.
■Comfort layer treatment: The comfort layer is generally composed of soft fabrics such as flame-retardant viscose or flame-retardant cotton. In order to improve the comfort of wearing, these fabrics are subjected to soft finishing, skin-friendly treatment and other processes to make them feel softer and smoother, reduce irritation to the skin, while ensuring good moisture absorption and breathability, making firefighters more comfortable to wear.
■Multi-layer composite technology: Using professional composite equipment and technology, the outer layer, waterproof breathable layer, thermal insulation layer and comfort layer are closely composited together. Commonly used composite methods include hot melt adhesive composite, ultrasonic composite, etc. Hot melt adhesive lamination uses hot melt glue to melt under a certain temperature and pressure to bond the fabric layers together, and forms a strong bond after cooling; ultrasonic lamination uses high-frequency vibration of ultrasonic waves to fuse the molecules of each layer of fabric with each other to achieve compounding.
■Seamless composite technology: In order to improve the overall performance and comfort of firefighting suits, seamless composite technology is used in some key parts, such as shoulders, elbows, knees and other joints. Through special molds and processes, each layer of fabric is seamlessly connected at these parts, reducing friction and heat transfer caused by sutures, while improving the flexibility and durability of the joints.
■High-strength sewing: Use high-strength flame-retardant sewing thread to ensure the firmness of sewing. The strength of the sewing thread must be able to withstand external forces such as stretching and friction during use of the firefighting suit to prevent the sutures from breaking. During the sewing process, the stitch density is strictly controlled. The number of light and dark threads should not be less than 12 stitches every 3cm, and the number of overlock stitches should not be less than 9 stitches every 3cm to ensure uniformity and tightness of sewing.
■Sewing of special parts: Special sewing techniques are used for the plackets, cuffs, collars and other parts of firefighting suits. The placket is usually sewn with double needles or multiple needles to increase the strength and sealing of the placket; the cuffs and collar are designed with elastic bands or adjustable, and are fixed to the garment through special sewing methods, which can not only ensure the comfort of wearing, but also prevent the entry of flames and heat.
■Thermal stabilization treatment: perform heat stabilization treatment on the produced fire-fighting clothing, place it in a specific temperature environment for aging testing, simulate the use of fire-fighting clothing in a high-temperature environment, and check whether the dimensional stability, fabric performance, etc. of the clothing meet the requirements. After thermal stabilization, each layer of clothing fabrics can better adapt to high temperature environments and are less prone to deformation, embrittlement and other problems.
■Reflective marking treatment: The reflective marking tape needs to be firmly sewn on the top and trousers of the firefighting suit. For split protective clothing, the width of the reflective marking tape should not be less than 50mm at the top bust, hem, cuffs and trouser legs. After stitching, the reflective sign tape also needs to be tested for washing resistance, heat resistance, high and low temperature and other performance tests to ensure that it can maintain good reflective performance and durability in various environments.
