Coating apparatus – With vacuum or fluid pressure chamber – With means to apply electrical and/or radiant energy to work...
Patent
1986-05-28
1988-05-17
Page, Thurman K.
Coating apparatus
With vacuum or fluid pressure chamber
With means to apply electrical and/or radiant energy to work...
118620, 427 44, C23C 1400, B05D 306
Patent
active
047443294
ABSTRACT:
The process for coating pencils comprises the treatment by accelerated electrons of pencils provided with a layer of polymerizable resin, in which the pencils are introduced into a chamber under inert atmosphere in which they fall freely while passing through streams of accelerated electrons.
The apparatus for the practice of this process comprises especially a drying device for the resin constituted by a closed chamber (6) containing two electron guns (7, 7') and having an inlet opening (8) in its upper wall for the introduction of the pencils and an outlet opening (9) in its bottom for the evacuation toward the exterior of the treated pencils; the introduction opening and the outlet opening are disposed vertically the one under the other in such a manner that the pencils can pass from the one to the other through a vertical free fall.
REFERENCES:
patent: 2760229 (1956-08-01), Cheney et al.
patent: 2790202 (1957-04-01), Lorenian
patent: 3081485 (1963-03-01), Steigerwald
patent: 4048504 (1977-09-01), Bosshard
patent: 4125644 (1978-11-01), Ketley et al.
patent: 4637952 (1987-01-01), Rosenlund
Caran d'Ache S.A.
Page Thurman K.
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