Abstract: A method wherein there is provided a source of fiber forming material, with said fiber forming material being pumped into a die having a plurality of spinnerets about its periphery. The die is rotated at a predetermined adjustable speed, whereby the liquid is expelled from the die so as to form fibers. It is preferred that the fiber forming material be cooled as it is leaving the holes in the spinnerets during drawdown. The fibers may be used to produce fabrics, fibrous tow and yarn through appropriate take-up systems. The pumping system provides a pumping action whereby a volumetric quantity of liquid is forced into the rotational system independent of viscosity or the back pressure generated by the spinnerets and the manifold system of the spinning head, thus creating positive displacement feeding. Positive displacement feeding may be accomplished by the extruder alone or with an additional pump of the type generally employed for this purpose.

Abstract: An apparatus wherein there is provided a source of fiber forming material, with said fiber forming material being pumped into a die having a plurality of spinnerets about its periphery. The die is rotated at a predetermined adjustable speed, whereby the liquid is expelled from the die so as to form fibers. It is preferred that the fiber forming material be cooled as it is leaving the holes in the spinnerets during drawdown. The fibers may be used to produce fabrics, fibrous tow and yarn through appropriate take-up systems. The pumping system provides a pumping action whereby a volumetric quantity of liquid is forced into the rotational system independent of viscosity or the back pressure generated by the spinnerets and the manifold system of the spinning head, thus creating positive displacement feeding. Positive displacement feeding may be accomplished by the extruder alone or with an additional pump of the type generally employed for this purpose.

Abstract: A process and apparatus for producing a mixture of polymeric phases wherein a plurality of fluid material having different phases are fed into a phase programmer, and said phase programmer separately and sequentially injects pulses of said polymeric materials into a reservoir. The material may be passed through an extrudate shaping device so as to provide a moasic structure comprising an agglomeration of a plurality of said polymeric phases, each of which phases are substantially non-continuous in any dimension and which are interrupted with substantially no intermixing between phases.

Abstract: A thermoplastic web of indeterminate length is provided by forming a tubular thermoplastic web having interconnected filaments. The web is rotated about its axis while being advanced along its axis and is slit so as to provide a web having substantially parallel filament alignment at an angle to the longitudinal axis of the web. The web may be formed into a multiply structure having a plurality of webs wherein the filament alignment of at least one of the webs of the structure is at an angle to the filament alignment of at least one of the other webs of the structure.

Abstract: A thermoplastic web of indeterminate length is provided by forming a tubular thermoplastic web having interconnected filaments. The web is rotated about its axis while being advanced along its axis and is slit so as to provide a web having substantially parallel filament alignment at an angle to the longitudinal axis of the web. The web may be formed into a multiply structure having a plurality of webs wherein the filament alignment of at least one of the webs of the structure is at an angle to the filament alignment of at least one of the other webs of the structure.

Abstract: A thermoplastic web of indeterminate length is provided by forming a tubular thermoplastic web having interconnected filaments. The web is rotated about its axis while being advanced along its axis and is slit so as to provide a web having substantially parallel filament alignment at an angle to the longitudinal axis of the web. The web may be formed into a multiply structure having a plurality of webs wherein the filament alignment of at least one of the webs of the structure is at an angle to the filament alignment of at least one of the other webs of the structure.

Abstract: Self-bonded, balanced nonwoven fibrous fabrics having fibers uniaxially oriented and junction points of biaxially oriented film tissue and fibers in the plane of the fabric, the fibers being primarily oriented in the machine direction with the biaxially oriented film tissue being oriented in the cross direction. The nonwoven fabrics are produced by extruding a molten polymer radially from a circular die, quenching and then drawing the extrudate.

Abstract: A mechanical fibrillator for use with a split film tape extrusion system which comprises means for guiding the tape through the fibrillator, rotating cutter means in the fibrillator, means for forcing the tape into contact with the rotating cutter means, and means adjacent the cutter for collecting dust created during fibrillation.

Abstract: An oriented thermoplastic sheet is pleated and an adhesive and backing is applied to one face thereof. The other face is then pleat fibrillated to a desired depth. Both faces may have adhesive and backing applied thereto with the structure being centrally cut parallel to the faces. The extending edges of the sheets on the two structures are then fibrillated to a desired depth.