Abstract: There is disclosed a melt-blowing die head having a die tip which, instead of a number of individual orifices, has a single continuous slot opening running its length. In addition the die tip is reinforced by means of aerodynamically shaped bosses in the fluid delivery channels which bear between the air plate and the exterior surface of the die tip. The die tip may also have reservoirs at either end in which debris may be collected when the slot is cleaned while the die head is in place on a melt-blowing machine.

Abstract: An improved sealing means is provided in a multiple component assembly for delivering a fluid material under pressure which includes a lower fluid material container section having a cavity formed therein and provided with at least one outlet orifice formed in an outlet surface of the lower fluid material container section, which outlet orifice communicates with the cavity, an upper fluid material container section formed in at least two parts which are arranged in juxtaposed mating relationship and which define a cavity therein, one of the juxtaposed parts having a fluid material inlet in an inlet surface, the inlet communicating with the cavity in the upper fluid material container section. The upper fluid material container section is mounted in superposed mating relationship on the lower fluid material container section and the upper fluid material container cavity is arranged to communicate with the lower fluid material container cavity and thereby define a fluid material chamber.