Down is the first choice of material for keeping warm in winter because of its advantages of high fluffiness, soft texture, and low thermal conductivity. The compression performance of down products is a key indicator for measuring the fluffiness of down products. To improve the fluffiness of down products, a tubular down yarn was prepared by filling down into a small-diameter braided tube. In the study, braided tubes are taken as the object, and a combination of ABAQUS simulation software and objective test results is used to explore the influence of braided tube parameters (diameter, method of compression, weaving angle, diameter of single yarn) on the compression recovery performance of tubular down yarn. The results show that the compression recovery performance of the braided tube was optimal when the diameter of the braided tube was 12 cm, the weaving angle was 10°, the diameter of a single yarn was 0.7 mm, and the pressure head was circular. These condition parameters can be used as the optimal parameters for the preparation of a braided tube, thereby further improving the fluffiness of tubular down yarn.
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