Process for the improvement of the adhesion of photographic laye

Details Process for the improvement of the adhesion of photographic laye Process for the improvement of the adhesion of photographic laye

1976-04-26

1977-10-25

Kimlin, Edward C.

Gas separation: apparatus

Electric field separation apparatus

Electrode retaining or supporting means

427 40, 427371, G03C 178, G03C 196

Patent

active

040556859

ABSTRACT:
Corona treatment involves the continuous subjection of the film web to a steady alternating current discharge. This treatment is carried out in two consecutive stages, the corona discharge frequency f.sub.1 in the first stage being in the range f.sub.1 = 5 to 100 kHz and the corona discharge frequency f.sub.2 in the second stage being in the range f.sub.2 = 500 to 2000 kHz.

REFERENCES:
patent: RE28628 (1975-11-01), Carlson et al.
patent: 3031332 (1962-04-01), Ruthacker
patent: 3549406 (1970-12-01), Ambusk
patent: 3582338 (1971-06-01), Yost et al.
patent: 3697305 (1972-10-01), Tatsuta et al.
patent: 3702258 (1972-11-01), Gibbons et al.
patent: 3730753 (1973-05-01), Kerr
patent: 3853585 (1974-10-01), Tatsuta et al.
patent: 3860427 (1975-01-01), Matsuo et al.
patent: 3983301 (1976-09-01), Cook et al.
patent: 4009037 (1977-02-01), Mann et al.
Wechsberg et al, "Surface treatment of PE film by Electrical Discharge", Plastics Engineering, July, 1959, p. 101.

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