The "light weight" feature of hollow composite polyester staple fiber comes from its unique hollow structure design. Compared with solid fiber, the hollow structure greatly reduces the weight of the fiber itself. With the same filling volume, its weight is only about 70% of that of traditional solid polyester staple fiber, which can effectively reduce the overall weight of the filling product and avoid the oppression caused by traditional heavy filling. Whether it is down jackets, warm quilts, pillows, or cushions, after being filled with this fiber, it can achieve a "light as nothing" wearing or using experience, allowing users to enjoy warmth while getting rid of heavy constraints.

At the same time, the hollow structure gives the fiber excellent fluffy and resilient properties. After being squeezed, the fiber can quickly return to its original shape and always maintain a full and fluffy state. This feature not only allows the filled product to maintain a beautiful shape for a long time, but also locks in more still air through the fluffy structure, laying the foundation for subsequent thermal insulation performance. In addition, the fluffy fiber structure can also improve the breathability of the product, reduce the feeling of stuffiness, and bring the comfort experience to a higher level.

The core principle of keeping warm is to reduce heat transfer, and air is an excellent insulating medium. The hollow chamber of the hollow composite polyester staple fiber can firmly lock a large amount of still air, forming an efficient thermal insulation barrier to prevent the body's heat from dissipating outwards, and at the same time isolating the intrusion of cold air from the outside, thereby achieving excellent thermal insulation effect. After testing, when filled with the same weight, the warmth retention of hollow composite polyester staple fiber is more than 30% higher than that of traditional solid polyester staple fiber, and is even comparable to natural down.

Compared with natural filling materials (such as down and wool), hollow composite polyester staple fiber also has more stable thermal insulation properties. Natural materials are easily affected by humidity, and their thermal insulation properties will significantly decrease when the humidity increases. However, hollow composite polyester staple fiber has good moisture resistance and can maintain a stable thermal insulation effect even in humid environments. There is no need to worry about the degradation of thermal insulation performance. At the same time, its chemical properties are stable and it is not easy to breed bacteria and mold. It avoids possible allergic problems caused by natural filling materials and is suitable for a wider range of people.

With its core advantages of being light, fluffy and warm, hollow composite polyester staple fiber is widely used in many fields, making it an ideal choice for upgrading filling materials:

In the field of home textiles, it can be used to make products such as warm quilts, duvet cores, pillow cores, sofa pillows, etc., making home textile products light, warm, and breathable, improving the sleeping and resting experience; in the field of clothing, it is a high-quality filling material for down jackets, cotton jackets, thermal underwear, and outdoor jacket linings, which can be used to protect the skin. While ensuring warmth, it reduces the weight of clothing and improves the flexibility and comfort of wearing. It is especially suitable for outdoor travel, commuting in cold areas, etc. In the home and industrial fields, it can also be used to make plush toys, soft furniture fillings, thermal insulation materials, etc., to meet the warmth and filling needs of different scenes.