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Piezoelectric polymer transducer and process of manufacturing the same

  • US 4,670,074 A
  • Filed: 10/16/1985
  • Issued: 06/02/1987
  • Est. Priority Date: 12/31/1981
  • Status: Expired due to Fees
First Claim
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1. A method of manufacturing a composite piezeoelectric transducer comprising the steps of:

  • forming two blades made of a first polymeric sbustance;

    forming a solution including a solvent in which a second polymeric substance and carbon are dissolved;

    depositing said solution in the form of a thin layer on faces of each one of said two blades;

    evaporating the solvent from said two blades after depositing of said solution thereon, thereby causing a superficial dissolution of the substrate blades to take place ensuring the formation of the adhering conductive electrode layer;

    pressing said two blades against each other while their respective electrodes engage one another to form an assembly; and

    rolling said assembly between two rollers in the presence of an electric field, said rolling step applying a force acting between the two rollers ranging from 40 to 100 tons, said electric field ranging from 10 to 20 kV, asnd the temperature of the two rollers ranging from 50°

    C. to 80°

    C.

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