Apparatus for manufacturing spot test indicators

Details Apparatus for manufacturing spot test indicators Apparatus for manufacturing spot test indicators

1977-05-11

1978-12-19

Mackey, Robert

Coating apparatus

Projection or spray type

Plural projectors

33 32E, 33 41D, 118401, B05C 502

Patent

active

041300858

ABSTRACT:
Apparatus is disclosed which is useful for applying lines of an aqueous liquid reagent to a moving hydrophobic sheet. The apparatus makes application of the lines in such a manner that a constant volume of reagent is applied to a constant surface area of the moving sheet, providing a uniform reagent site on the hydrophobic surface. The apparatus is particularly useful to manufacture spot test indicators of the type for detection of chemical substances dissolved in aqueous media.

REFERENCES:
patent: 1191725 (1916-07-01), Paulsen
patent: 2084651 (1937-06-01), Mecklenburg et al.
patent: 2578918 (1951-12-01), Boddy et al.
patent: 2688189 (1954-09-01), Klauss
patent: 2754228 (1956-07-01), Bede
patent: 2800418 (1957-07-01), Cannon
patent: 2916012 (1959-12-01), Hergenrother

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