초록 ▼

An apparatus for coating a moving substrate which provides means for directing a coating composition vapor toward a substrate surface and moving portions of the vapor in opposite directions. The apparatus of the present invention may have the exhaust means on either side of the vapor directing means

An apparatus for coating a moving substrate which provides means for directing a coating composition vapor toward a substrate surface and moving portions of the vapor in opposite directions. The apparatus of the present invention may have the exhaust means on either side of the vapor directing means spaced at different distances from the vapor directing means, or the exhaust means may be spaced equally from the vapor directing means, but at different distances from the substrate surface. In another embodiment, the apparatus comprises the means to alter the flow volume of the vapor directing means and the two exhaust means such that the flow volume of the first and second exhaust means are not equal, such as by the exhaust means having openings of unequal surface area, wherein the exhaust means may be spaced equally or unequally from the vapor directing means at the same or different distances from the substrate surface. In another embodiment, the apparatus further comprises a structural element bridging the space between the vapor directing means and the exhaust means, which may be spaced equally or unequally from the vapor directing means, and at the same or different distances from the substrate surface.

대표청구항 ▼

[ We claim:] [1.] A coating apparatus comprising:a means for directing a vapor in a first direction, said vapor directing means having a first side and an opposing second side;a first means for directing an inert gas in the first direction, the first gas directing means in a spaced facing relationsh

[ We claim:] [1.] A coating apparatus comprising:a means for directing a vapor in a first direction, said vapor directing means having a first side and an opposing second side;a first means for directing an inert gas in the first direction, the first gas directing means in a spaced facing relationship to the first side of the vapor directing means;a first exhaust means in a spaced facing relationship to the first side of the vapor directing means between and spaced from the first side of the vapor directing means and the first gas directing means, the first exhaust means pulling an atmosphere in a direction opposite the first direction;a second means for directing an inert gas in the first direction, the second gas directing means in a spaced facing relationship to the second side of the vapor directing means;a second exhaust means in a spaced facing relationship to the second side of the vapor directing means between and spaced from the second side of the vapor directing means and the second gas directing means, the second exhaust means pulling an atmosphere in a direction opposite the first direction,wherein a coating zone is formed between said first and second exhaust means, the first and second gas directing means providing an inert gas curtain isolating an atmosphere within the coating zone from an atmosphere external of the coating zone, andwherein said first and second exhaust means and said vapor directing means are positioned relative to one another such that the distance between said first exhaust means and said vapor directing means is defined as "x" and the distance between the second exhaust means and said vapor directing means is defined as "y", wherein the values of "x" and "y" are different.