What standards do non-woven fabrics need to meet as automotive interior materials?
Nowadays, many materials in car interiors are made of non-woven fabrics, such as car roofs, car floor mats, car interior panel decoration, etc. are all made of non-woven fabrics, so as a car What are the requirements for interior and non-woven fabrics? Below we summarize four points for everyone to understand.
1. Breathable and moisture-permeable
Needle-punched non-woven fabrics are generally used in car interiors, mostly on mid-to-low-end cars, generally at the level of Camry. Needle punching and stitching are generally used for low- and medium-sized cars, and high-end cars are woven. There are two kinds of non-woven and knitted. In the non-woven fabric, there are: needle punching, stitching (mainly Malfries stitching cloth), depending on whether you use it in the fabric or ceiling reinforcement.
Medium and high-grade material, now more and more models are replanted with this material, yarn-free stitched roof: polyester material, with coil structure, very similar to warp knitted, and also characterized by elasticity in the thickness direction good. Needle-punched ceiling: polyester material, the effect is fluffy, the price is medium and low, many cars, vans use
2. Anti-ultraviolet light resistance
Automotive textiles must have good light resistance properties and UV resistance. Large heat and cold cycles may affect the fading and degradation of fabrics, which not only affects the service life of the material, but also greatly affects the aesthetics of the fabric after fading. As the sun sets, the temperature inside the car drops which greatly affects the relative humidity of the cabin. As the sun rises, the temperature inside the cabin can reach 130°C in some extreme weather conditions. In modern automobiles, in order to meet the requirements of lighting and light weight of automobiles, window glass begins to occupy a large area, which causes the interior space of automobiles to be affected by light.
3. Fogging performance
The fiber surface area on the front of the fleece fabric is large, and the fogging phenomenon will be more serious. The accumulation of chemical reagents can cause severe atomization, which must be strictly controlled. The fiber surface area on the front of the fleece fabric is large, and the smog phenomenon will be more serious if the fabric has not been tentered for a long time. Therefore, automotive interior fabrics must have certain anti-fogging properties. The 'smog' on the window glass is difficult to remove, which will seriously affect the sight of drivers and passengers, and the volatiles suspended in the air may be inhaled into the human body, thereby affecting people's health and safety. When these volatile substances are heated, they will volatilize and condense on the windows and windshields, forming a 'smog' phenomenon on their surfaces. Therefore, the finished automotive interior materials may contain many low-molecular-weight volatiles. Automotive interior materials undergo various functional finishes prior to use, and adhesives are used during installation.
4. Wear resistance
The common test methods for the wear resistance of automotive textiles include Martindale method and taber wear tester. The car seat fabric needs to have high wear resistance, so that it does not pill or snag during use to ensure the aesthetics of the seat. In some cases, it may be used for more than 10 years or even longer, and seat fabrics are generally used for at least 2 years. Abrasion resistance is the most important requirement for car seat fabrics and steering wheel fabrics.
5. Flame retardant properties
Special attention should be paid to the selection. In general, the horizontal combustion test method is commonly used to evaluate the flame retardant properties of automotive interior materials. Its thermal performance and combustion performance are also different. A variety of fibers may be used in automotive textile materials, which vary in composition and chemical structure, so that in the event of a car fire hazard, passengers have enough time to leave or reduce the risk of fire. Automotive interior materials, especially textiles, must have good flame retardancy and flame retardancy, and flame retardant non-woven fabrics must be used.
Every day of the year, there is some city or town in the world that is changing over to for non woven application.
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