The soundproof cotton for household appliances is mainly composed of sound-absorbing felt and soundproof rubber, which are firmly bonded by adhesive and sewn with Velcro buckles in appropriate positions. The sound-absorbing felt mainly includes green cured felt, black needle punched felt, gray cotton needle punched felt, and polyacrylonitrile needle punched felt. Sound insulation rubber mainly includes PVC rubber (sheet) and rubber rubber rubber (sheet).