15D hollow cotton is the filling inside the pillow; fiber fineness is an indicator of fiber thickness, expressed in decitex (dtex) Indicates (abbreviated as “special” abbreviated as “D”). The general specifications of conventional bedding filling materials are 6D, 7D, 8D, 15D, etc., and the length is usually 64mm. The weight of 1000 meters of fiber is called how many grams. The larger the fiber, the thicker the fiber. High-end bedding fillings should generally not exceed 8D.
Hollow cotton was produced with the development of man-made fiber technology. In addition to expanding fibers In addition to keeping warm through the gaps, the hollow fiber interior can also keep warm. What makes it better than down is that it can still keep some warmth when wet, but its compressibility and weight are not as superior as down materials, so it cannot fully replace down products.
(1) Single hole Cotton: The fiber has a hole in the hollow. It has better elasticity and warmth retention than polyester solid cotton, and the price is lower.
(2) Porous cotton: This type of fiber has seven holes or four holes, and the specifications are 6D, 8D. They are all made of three-dimensional curly cotton, which has good elasticity, warmth retention, breathability, light weight and comfortable feeling on the human body. Because the fiber pores can maintain moisture and oxygen in the air, they provide for human skin metabolism and are beneficial to health. Therefore, it is generally used as a filler for mid- to high-end bedding, but the cost is relatively high.
