Sound absorber for air cleaner, and air cleaner

A sound absorber for an air cleaner, the sound absorber being configured to be attached to an inner wall of a case of an air cleaner for an internal combustion engine to reduce intake noise in the internal combustion engine, the sound absorber comprising:

• a body including:
• an air-permeable sound absorbing layer formed of a thermoplastic resin nonwoven fabric;
• and
• a shape retaining layer formed of a thermoplastic resin sheet having a lower melting point than the sound absorbing layer, the shape retaining layer being laminated on the sound absorbing layer and then thermally pressed so as to be bonded to fibers of the sound absorbing layer, thereby maintaining a shape of the sound absorbing layer;
• and
• an attachment formed by thermally pressing a part of the nonwoven fabric and a part of the sheet, the attachment being configured to be attached to the inner wall such that an air layer is formed between the body and the inner wall, wherein
• the shape retaining layer includes a through-hole extending through the shape retaining layer in a thickness direction of the shape retaining layer.