| 摘要 |
<p>The blower unit consists of a bar (5) situated adjacent to the outlet end of the press, equipped with a series of nozzles (77, 79) with controlled opening. Each nozzle is in a flattened parallelepiped shape, and the air jets issuing from them are directed horizontally between the metallised strip and cardboard sheet. The opening and closing of the nozzles is controlled by slide valves (10, 15) which can move perpendicular to a pressurised air feed channel and have communication ducts to the nozzles. The slide valves are spring-loaded and can be manually operated, and the nozzles can be formed between two plates (25, 30) with rectangular notches in them.</p> |
