Process ordinary chemical staple fiber to form pearl – sized ball shape. The ball- shaped chemical fiber is more curled, fluffier and more elastic. It is easy to regain its elasticity when aired in the sun and patted after being pressed for a long time. The chemical fiber thus shaped can be filled, just like feather, into cloth products by fanned air. It is suitable to be used as a filling in pillow cores, mattress, quilts, warm- keeping clothes and cotton flannel toys.