D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
D01G15/02—Carding machines
D01G15/72—Arrangements for returning waste to be re-carded