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Single Screw Extruder For Making A Dryer Bar

A method of single screw extruder for making a dryer bar comprising the steps: (a) providing a composition suitable for use in a dryer bar; (b) extruding the composition through a single screw extruder to make an extruded composition comprising: (i) providing the twin screw extruder, dieing the extruded composition with a die to form a died composition; and (d) stamping the died composition with a stamp to form the dryer bar.

A first aspect of the sheet production extruder provides for a dryer bar comprising a fabric softening composition, wherein the fabric softening composition comprises a void volume percentage from about 0.33% to about 20% with respect to the total volume of the composition.

A second aspect of the invention provides for a fabric softening composition made by a single screw extrusion process, wherein the composition comprises a quaternary ammonium compound suitable for softening laundry, and wherein the composition comprises a void volume from about 3% to about 10% with respect to the total volume of the composition.

A third aspect of the invention provides for a method of softening fabric comprising the step of installing a dryer bar inside an automatic laundry drying machine, wherein the dryer bar comprises a fabric softening composition, wherein the composition comprises a quaternary ammonium compound and wherein the composition comprises a void volume from about 3% to about 10% with respect to the total volume of the composition.

A fourth aspect of the invention provides for a kit comprising: (a) an article wherein the article comprises a fabric softening composition, wherein the fabric softening composition comprises a quaternary ammonium compound and wherein the composition comprises a void volume from about 3% to about 10% with respect to the total volume of the composition; and (b) instructions instructing that the article be installed on an inside surface of an automatic laundry drying machine.

A fifth aspect of the invention provides for a method of making a dryer bar comprising the steps: providing a composition suitable for use as a dryer bar; extruding the composition through a single screw extruder to make an extruded composition. The single screw extruder comprises a channeled barrel comprising a channel containing a single screw within the channeloptionally dieing the extruded composition with a die to form a died composition; and optionally stamping the died composition with a stamp to form the dryer bar.

A sixth aspect of the invention provides for a method of making a dryer bar comprising the steps: providing a composition that comprises a quaternary ammonium compound; extruding the composition through a single screw extruder to make an extruded composition. heating the composition as the composition is conveyed through the heating region of the twin screw extruder to make the extruded composition; and optionally stamping the extruded composition to form the dryer bar.

Other aspects of the single screw extruder include combinations of the previous aspects described.