Melt-blown type non -woven fabrics making plant

Melt-blown type non-woven fabrics making plant (1) comprising:

• a distributor (2) configured to be operatively connected to one or more boxes (10) and including at least one main access (20) suitable to be placed in fluid passage connection with a main conduit (10a) of said box (10) suitable to convey polymeric fluid and a plurality of secondary accesses (21) suitable to be placed in fluid passage connection each with a respective secondary conduit (10b) of said box (10) suitable to convey gas;
• a dispenser (3) in fluid passage connection with said dispenser (2), configured to dispense polymeric filaments from said polymeric fluid and including at least one spinneret (4) suitable to form said polymeric filaments and an air blade (5) suitable to receive said gas to guide said polymeric filaments exiting said dispenser (3);
• and characterised by
• said spinneret (4) comprises:
• a plurality of mutually flanked pinnacles (40) each comprising at least one main outlet (40a) configured to guide said polymeric fluid along a respective delivery direction (4a) such that said delivery directions (4a) are mutually parallel, and
• for each pinnacle (40) a pair of secondary outlets (41) arranged at opposite sides relative to said respective pinnacle (40) and configured to convey said gas towards said air blade (5),
• said air blade (5) is adapted to convey jets of said gas to converge towards each of said delivery direction (4a) so as to guide said polymer filaments, and
• said plant (1) further comprising a transfer device (6) configured to place in fluid passage connection said at least one main access (20) with at least one said main outlet (40a) and each said secondary access (21) with at least one respective said secondary outlet (41).