DEVICE FOR TREATING SHEET MATERIAL WITH WATER JETS UNDER PRESSURE

摘要

The invention concerns a injector for treating a sheet material with jets/needles of water comprising: a body (1) supplying water under pressure including a supply chamber (2) extending over the whole length of said body, and wherein is brought through a filter (4), water under pressure; a distributing zone, dispensing water under pressure over the whole treated width against a microperforated plate (7) whereof the holes defining needles of water (8) directed against the surface of the material to be treated; clamping jaws (9) for maintaining the microperforated plate (7), and forming between them a longitudinal slot allowing through water jets. The invention is characterised in that it comprises an air-circulating chamber (17) opposite the lower surface (11) of the clamp (9), the wall of said chamber consisting of a plate (14) made from a porous material.