Ultrasonic vulcanization

Details Ultrasonic vulcanization Ultrasonic vulcanization

1984-01-30

1985-10-22

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Agglomeration or accretion

156 731, 156 734, 156 735, 264 25, 264 26, 264 68, 264 71, 425 41, 4251742, 425445, B29H 501, B29H 526

Patent

active

045487715

ABSTRACT:
Methods and apparatus for vulcanizing rubber and like material (10). Ultrasonic energy at about 10 to 100 kilohertz is applied to the material (10) at an energy intensity sufficient to generate heat to a temperature in the range of about 200 to 300 degrees Fahrenheit, while a static pressure is applied on the material (10) sufficient to prevent substantial cavitation and material degradation. The application of the ultrasonic energy and the pressure is maintained for at least about 10 minutes for each 1/8 inch in thickness of the material (10).

REFERENCES:
patent: 2626430 (1953-01-01), Dawson
patent: 3058513 (1962-10-01), Schaub et al.
patent: 3184353 (1965-05-01), Balamuth et al.
patent: 3298065 (1967-01-01), Pendleton
patent: 3717427 (1973-02-01), Bodine
patent: 3773872 (1973-11-01), Isshiki et al.
patent: 3904457 (1975-09-01), Laughlin
patent: 4132519 (1979-01-01), Reed
patent: 4315875 (1982-02-01), Hoedt
patent: 4461662 (1984-07-01), Onishi

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