Process and apparatus for the manufacture of films by electrosta

Details Process and apparatus for the manufacture of films by electrosta Process and apparatus for the manufacture of films by electrosta

1979-01-22

1981-01-13

Lowe, James B.

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Agglomeration or accretion

361234, 4251748E, B29D 702

Patent

active

042448948

ABSTRACT:
Process and apparatus for electrostatically pinning a dielectric film to a moving surface which is electrically conducting and connected to a grounded fixed potential comprising a corona wire fed with a direct current and a semi-cylindrical metal counter-electrode connected to a potential which is approximately equal to the potential of the moving surface.
When extruding a molten mass of polymer onto a cooling surface, a substantial increase in the speed of application is observed. The best results are obtained when the radius of the counter-electrode is approximately equal to the distance between the corona wire and the moving surface.

REFERENCES:
patent: 3427686 (1969-02-01), Busby
patent: 3660549 (1972-05-01), Hawkins
patent: 3820929 (1974-06-01), Busby et al.

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