Design and implementation of the sun protection function of Outdoor Sports Fabric

I. The impact of fabric structure design on sun protection function

1. Tight fabric structure
Tight fabric structure is the basis of the sun protection function of Outdoor Sports Fabric. By adopting high-density weaving technology, the gaps between fabric fibers are effectively reduced, thereby reducing the possibility of ultraviolet rays penetrating the fabric. This tight fabric structure not only improves the UV protection performance of the fabric, but also enhances the wear resistance and durability of the fabric. In practical applications, such as outdoor activities such as hiking and mountaineering, the tight fabric structure can effectively block the direct sunlight of strong sunlight and protect the wearer's skin from UV damage.

2. Multi-layer composite structure
Multi-layer composite structure is another effective way to improve the sun protection function of fabrics. This structure is usually composed of multiple layers of fabrics through a specific process, and each layer has different functions. The outer layer may use materials with excellent sun protection performance, such as polyester or nylon with anti-ultraviolet finishing agents added; the inner layer may focus on breathability and moisture absorption to improve wearing comfort. The multi-layer composite structure not only improves the overall sun protection performance of the fabric, but also realizes the versatility of the fabric through a reasonable layer design.

3. Special texture and pattern design
Special texture and pattern design is also an innovative way to improve the sun protection function of fabrics. By changing the texture and pattern of the fabric, the fabric's ability to reflect and scatter ultraviolet rays can be increased. The use of fabrics with uneven textures can increase the diffuse reflection of light on the fabric surface, thereby reducing the penetration of ultraviolet rays. Certain special pattern designs, such as grid and honeycomb, can also improve the sun protection performance of fabrics.

II. Contribution of fabric design elements to sun protection function
1. Sunscreen coating and finishing agent
In the fabric design process, the application of sunscreen coating and finishing agent is a key link in improving the sun protection function of fabrics. Sunscreen coating is usually a layer of sunscreen material applied to the surface of the fabric. These materials can absorb, reflect or scatter ultraviolet rays, thereby reducing the damage of ultraviolet rays to the skin. Finishing agents are usually added during the fabric production process to enhance the fabric's ability to protect against ultraviolet rays. These finishing agents can be organic or inorganic, and their mechanisms of action are different, but they can effectively improve the sun protection performance of fabrics.

It is worth noting that the selection and application of sunscreen coatings and finishing agents need to take into account the breathability and comfort of the fabric. Too thick a coating or too much finishing agent may affect the breathability of the fabric, causing the wearer to feel stuffy and uncomfortable. The relationship between sunscreen effect and wearing comfort needs to be weighed during the design and production process.

2. Selection and modification of fiber raw materials
The selection and modification of fiber raw materials are also important means to improve the sunscreen function of fabrics. Some fiber raw materials themselves have good UV absorption properties, such as polyester, wool, etc. By selecting these fiber raw materials and modifying them, the sunscreen performance of the fabric can be further improved. Anti-ultraviolet substances can be blended and spun with fiber raw materials using co-spinning technology to produce fibers with excellent sunscreen performance. The fiber can also be surface modified, such as graft copolymerization, cross-linking, etc., to improve the fiber's ability to protect against ultraviolet rays.

3. Application of skin-core structure
The skin-core structure is a unique fiber form, and its application in sunscreen fabrics has also achieved remarkable results. Skin-core fabrics are usually composed of a skin layer and a core layer. The skin layer is responsible for blocking harmful light such as ultraviolet rays, while the core layer provides stable support. The clever integration of matting agents into the skin layer can significantly improve the fabric's UV protection ability. These matting agent particles can reflect and scatter part of the light, reduce the light's penetration ability, and convert the energy of ultraviolet rays into heat or other forms of energy. The application of skin-core structure not only improves the sun protection performance of the fabric, but also maintains the durability and comfort of the fabric.