Patent ID: 7678218
Filing Date: 2010-03-16
Classification: B29C,B29K,B29L,H04R,Y10T

Abstract:
1. A production method for an electroacoustic transducer diaphragm, comprising: a producing step of producing an adhered sheet by adhering a sheet member on a surface of a wooden sheet having a thickness of from 0.01 mm to 3 mm, and the sheet member being made of a material different from the wooden sheet; an immersing step of immersing the adhered sheet into one of a solution including 0.01-1 wt % of a penetrating agent and a solution including 0.01-1 wt % of the penetrating agent and 0.01-20 wt % of a wetting agent; and a first hot press molding step of molding an adhered sheet obtained by the immersing step so that the immersed adhered sheet has a predetermined shape of the electroacoustic transducer diaphragm, wherein the penetrating agent is one of sodium butyl naphthalene sulfonate, sodium di(2-ethylhexyl) sulfosuccinate, sodium lauryl sulfate, and a combination thereof; the wetting agent is one of a of monovalent alcohol, dihydric alcohol, triatomic alcohol, ethylene glycol, butyl glycol, propyl glycol, sugars, mucopolysaccharides, sugar alcohols, water-soluble proteins and a combination thereof; and the solution contains 0.05-0.1 wt % of sodium di(2-ethylhexyl) sulfosuccinate.