APPARATUS FOR, AND METHOD OF, TREATING SUBSTRATES FOR CATALYTIC CONVERTERS

摘要

Apparatus for treating a substrate is described, a substrate being the component of a catalytic converter which is coated with the catalytic material: The apparatus comprises a rotary table which divides the apparatus into an upper chamber and a lower chamber. Air is withdrawn from the lower chamber thereby reducing the pressure there to sub-atmospheric. This causes air to flow through the table to the lower chamber from the upper chamber. The table has openings in it and trays are provided which search sealingly in the openings. The trays support the substrate and themselves have openings the shapes of which match the shapes of the substrates. There are seals between the trays and substrates so that all the air flowing from the upper chamber to the lower chamber passes through the substrates.