PATTERNED MELT-BLOWN NON-WOVEN FABRIC AND ITS PREPARATION

PURPOSE:To prepare the subject non-woven fabric having good surface smoothness and good hand touch and useful as a packaging material, etc., by blowing fiber groups toward a perforated plate having arbitrarily shaped openings from a melt blow die to accumulate the fibers thereon. CONSTITUTION:Fiber groups are blown from a melt blow die 10 toward a perforated plate 12 having arbitrarily shaped openings to accumulate the fibers thereon, the air pressure of the melt blow received on the perforated plate 12 being such a pressure as the fibers are not projected from the openings 12a on the opposite side of the perforated plate 12, and the fibers accumulated on the openings being adhered to each other. The accumulated fiber groups are peeled from the perforated plate 12 to provide the objective non-woven fabric which is formed of the fiber groups of a thermoplastic resin and has patterned regions 2 where the self adhesion degree of the fibers is higher than that of the fibers in other regions and where the thickness (t) of the regions is >=1/3 of that (h) of other regions.