Pile yarn, preparation method and application thereof

A method for preparing a pile yarn, comprising:

• in a process of a motion of a multifilament including multiple monofilaments, using a high-pressure airflow to feed short fibers into a fiber transfer channel of the multifilament at a uniform speed to prepare the pile yarn, wherein an average length of the short fibers is 15-25 mm;
• wherein a number of monofilaments in the multifilament is 30-50;
• wherein a pressure of the high-pressure airflow is 1-2 MPa;
• and
• wherein an included angle of 85-90° is formed between a feeding direction of the short fibers and a transferring direction of the multifilament,
• wherein the pile yarn comprises the multifilament and piles on a surface of the multifilament;
• wherein each of the piles includes a given short fiber of the short fibers, said given short fiber having a first end and a second end, wherein the first end is a free end, and the second end is bonded to the multifilament by a mutual interlacing, a wrapping, and/or a tangling,
• wherein an average exposure length of the short fibers is 3-5 mm, wherein an exposure length defines a length of a portion of a corresponding short fiber of the short fibers that is exposed from an outermost monofilament surface of the multifilament.