Color may be one of the most important choices, not only for aesthetic reasons, but also because of how color affects the shading performance of windows. Dark and light-colored fabrics have advantages and limitations. It is important to specify colors suitable for the application:
The dark screen fabric has natural room darkening characteristics, which can reduce glare and improve the view from the inside out. They also absorb more solar energy than light-colored fabrics. However, this will cause more radiant heat to enter the indoor environment, resulting in a decrease in energy efficiency.
In contrast, white and light-colored fabrics inherently reflect light to reduce solar heat absorption. However, their glare filtering capabilities are not good, and the resulting brightening room effect may cause reduced visibility from shadows to external views.
Duotone (or double-sided) fabric is a powerful substitute for single-color dark or light-colored fabrics. These fabrics provide the best of both worlds, with brighter or reflective metal surfaces facing the window glass and reflecting heat, while darker surfaces facing inward to reduce glare. This combination can form a high-performance fabric, and maintain its room darkening function and excellent perspective effect.
When we consider three main types of fabrics, fabric structure is an important consideration: PVC-coated polyester, PVC-coated glass fiber, and PVC-free. The diameter of the polyester fiber core is often larger than the diameter of its glass fiber, resulting in a thicker and heavier fabric. The thicker and heavier the fabric, the larger the hardware and roller assembly to avoid flexing. In addition, polyester fibers can be stretched, while glass fibers tend to be more dimensionally stable fabrics. This must be taken into consideration when we want the fabric to remain flat and realistic throughout its service life. Generally, fiberglass core cloth is recommended for larger and higher window openings.
Although PVC-coated fabrics have obvious advantages, including reduced wear, ease of care and cleaning, increased dimensional stability and stretch resistance, etc., the VOC (volatile organic compounds) contained in these fabrics can cause odors Reduce indoor environmental quality. In the first few weeks or months of use, they "exhaust" exhaust gas. In the past decade, advances in fabric design and construction have led to the introduction of PVC-free fabrics, which are an excellent alternative to indoor spaces that are more sensitive to odors, such as hospitals. There are several PVC-free options, but the two most common are TPO (thermoplastic olefin) and PVC-free 100% polyester. Each has advantages and disadvantages: it is well known that TPO fabrics will fade over time, for example, openness
Although not as important as color and structure, the openness factor must still be considered when choosing roller blind fabrics. Fabrics with different openness have different levels of UV blocking. The rule of thumb is that the amount of ultraviolet light blocked by the fabric is the inverse of its openness. For example, 3% open fabric will block 97% of ultraviolet rays, while 10% open fabric can only block 90% of ultraviolet rays. In addition, openness factors affect the shadow and glare filtering performance of the fabric. Therefore, the location of the building should influence the choice of specific openness. In the southern climate, 1% and 3% of open fabrics face east, west, and south facades, respectively, while in the northern climate, 3% and 5% of open fabrics are popular.roller blind fabric