Abstract: A truncated cone which causes pressurized air flow from plural pressurized air holes to rotate and flow down along the circumferential surface of the truncated cone is provided connectedly at the underside of a nozzle base. A pair of (right and left) downward slanting surfaces which are recessed in V-shape (in side view) are formed in such a fashion that they oppose to each other and slant upward and toward the center. A nozzle projection whose underside is a non-circular shape having a minor axis in the direction where the lower ends of the downward slanting surfaces exist and a major axis in the direction where the lower ends of the downward slanting surfaces do not exist, is provided connectedly at the underside of the truncated cone. In the second invention of the present application, adhesive exposing surface is formed at a part of the downward slanting surface.

Abstract: This invention provides a bulky nonwoven fabric made of thermoplastic resin filaments, which is soft and highly permeable to water and gas and effectively absorbs moisture as well as shocks.A nonwoven fabric according to the invention is made of fiber-like filaments of a thermoplastic resin material and comprises a base cloth layer made having densely distributed holes and a large number of cylindrical projections, each standing from the peripheral edge of one of the holes and made of fiber-like filaments similar to those of the base cloth layer and soft, its height being at least twice as large as the thickness of the base cloth layer.

Abstract: This invention provides a bulky nonwoven fabric made of thermoplastic resin filaments, which is soft and highly permeable to water and gas and effectively absorbs moisture as well as shocks.A nonwoven fabric according to the invention is made of fiber-like filaments of a thermoplastic resin material and comprises a base cloth layer made having densely distributed holes and a large number of cylindrical projections, each standing from the peripheral edge of one of the holes and made of fiber-like filaments similar to those of the base cloth layer and soft, its height being at least twice as large as the thickness of the base cloth layer.

Abstract: A melt-blowing method having notches formed in the tip portions of capillaries of a melt-blowing die. This allows, during spinning, a high-speed gas blowing from orifices of the die to flow through the notches whereby the flow of a molten resin being extruded through each capillary is divided into two parts or more. This prevents fibers from becoming entangled or ball-shaped.

Abstract: Method and apparatus for manufacturing span bond nonwoven fabrics formed from continuous fibers which are small in fineness and high in strength and manufactured by the steps of spinning for obtaining a continuously drawn fiber by blowing a molten resin extruded out of a spinning nozzle by heated gases blown out of the periphery of the spinning nozzle; drawing for further drawing the obtained continuously drawn fiber by an air stream produced due to a pressure difference of gases; the extreme end of the nozzle being a distance of 0.5 to 2 m from the place where further drawing occurs; collecting for collection the drawn continuous fiber to collect the fibers; and uniting for uniting the collected continuous fibers together to form nonwoven fabrics.

Abstract: A melt-blowing die including a plurality of capillaries and orifices is used to obtain more than one flow of a molten resin from the tip portion of the capillary die by providing a plurality of notches on the tip portion of the die. A high-speed gas flows through the notches between the tip portions of the die to divide the resin into more than one flow. The invention prevents fibers from becoming entangled or ball-shaped.

Abstract: A melt blow die for use in a melt spinning apparatus includes a die block assembly having a chamber for receiving melt of a thermoplastic resin, at least one array of a plurality of capillary tubes arranged in a plane and having one ends held by the die block assembly, the capillary tube communicating with the chamber in the die block assembly, and gas plates connected to the die block assembly and defining therebetween gas chambers. The gas plates has lips which cooperate with each other to define a slit communicating with the gas chambers and to clamp the other ends of the array of capillary tubes in such a manner that gas orifices are formed between the peripheral surfaces of the capillary tubes and the adjacent surfaces of the lips. A gas introduced into the gas chambers is blown through the gas orifices to draw the melt of the thermoplastic resin extruded through the capillary tubes. The array of capillary tubes may be constructed as a unit which is detachably secured to the die block assembly.