The quality of composite fabrics can be judged from the following aspects:
1. Appearance
Flatness
The surface of high-quality composite fabrics should be flat, without obvious wrinkles, bubbles or waves. Because if the process is not good during the composite process and the different fabrics are not tightly fitted, these problems are likely to occur. For example, in clothing production, composite fabrics with uneven surfaces will affect the overall appearance and comfort of clothing.
Color
Composite fabrics with uniform and pure colors are of better quality. Observe the color performance of the fabric under different light to see if there is fading, color difference or uneven color. For example, a composite fabric used for outdoor tents, if there is a color problem, may appear mottled after a period of use, affecting its beauty and durability.
Fabric defects
Check the surface of the fabric for impurities, yarn knots, holes, etc. These defects may reduce the strength and service life of the fabric. When checking, the fabric can be carefully checked against the light source to ensure that the fabric is clean and tidy. For composite fabrics used to make high-end clothing, even minor defects may make it fail to meet quality requirements.
2. Touch
Softness and smoothness Touch the composite fabric with your hands to feel its softness and smoothness. If it is a composite fabric used for clothing, a soft and comfortable touch is important. For example, a layer of soft cashmere fabric combined with other fabrics should be able to maintain the softness of cashmere. At the same time, fabrics with good smoothness will be more convenient to put on and take off after being made into clothing, and it is not easy to produce static adsorption. Thickness uniformity Pinch different parts of the composite fabric with your hands to feel whether its thickness is consistent. Uneven thickness may cause the performance of certain parts to be affected during use. For example, in the composite fabric used to make mattresses, if the thickness is uneven, it may affect the flatness and comfort of the mattress.
3. Performance
Strength and toughness
The strength of the composite fabric can be judged by a simple tensile test. Gently pull the edge of the fabric to see if it is easy to tear. High-quality composite fabrics should have a certain tensile strength and be able to withstand a certain degree of external force. For example, the composite fabric used to make backpacks needs to be strong enough to withstand the weight of the items in the backpack without being easily damaged.
In terms of toughness, the fabric can be folded and rubbed repeatedly to see if there is delamination, cracks, etc. If the composite fabric is easy to delaminate during use, then its quality is not up to standard. For example, in sportswear, there are often bending and stretching movements. If the composite fabric has poor toughness, it will be damaged quickly.
Functionality
Waterproofness: If the composite fabric claims to be waterproof, you can drop water on the surface of the fabric and observe the state of the water droplets. For high-quality waterproof composite fabrics, water droplets will roll on the surface without penetrating into it. For example, the waterproof performance of composite fabrics of some outdoor jackets is a very important indicator.
Breathability: Breathability can be tested by a simple experiment. Cover the fabric with a cup filled with hot water, and then observe the water vapor above the cup passing through the fabric. Composite fabrics with good breathability can allow water vapor to dissipate faster, which is important for wearing comfort, especially in sportswear and footwear.
Warmth: For composite fabrics with warmth retention function, you can wrap it on a thermometer, compare it with a thermometer wrapped with ordinary fabrics, and put it in the same low temperature environment to see how fast the temperature drops. Or use your hands to feel whether it is warmer than other fabrics at the same temperature. For some composite fabrics used for winter clothing, warmth retention is one of the key properties.