ACOUSTIC DIAPHRAGM AND MANUFACTURING METHOD THEREOF

摘要

PROBLEM TO BE SOLVED: To provide an acoustic diaphragm with excellent physical properties such as a Young's modulus and excellent adaptability to forming and working. SOLUTION: Possibility of producing the acoustic diaphragm is found out from a water soluble hemicellulose providing a high Young's modulus among water soluble hemicelluloses having a film forming capability, and employing a water soluble hemicellulose derived from soybeans and pullulanes for the diaphragm obtains the acoustic diaphragm with excellent acoustic properties and excellent adaptability to forming and working. COPYRIGHT: (C)2004,JPO