Patents by Inventor Randall A. Sferrazza
Randall A. Sferrazza has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20040219243Abstract: BCF yarn is melt-spun, drawn and textured to provide morphologically stable BCF yarns. The yarn texturizing includes a relatively low efficiency fluid jet texturizer, that is a fluid jet texturizer operating at a sufficiently low fluid jet velocity and a sufficiently high fluid jet temperature to obtain a yarn skein shrinkage of less than about 0.50 inch, more preferably about 0.25 inch or less. Most preferably, the BCF yarns are formed of nylon-6 and exhibit an alpha-crystalline content of less than about 45%, and usually between about 45% to about 55%.Type: ApplicationFiled: June 3, 2004Publication date: November 4, 2004Applicant: Honeywell International Inc.Inventors: Otto M. Ilg, Randall A. Sferrazza
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Patent number: 6776943Abstract: BCF yarn is melt-spun, drawn and textured to provide morphologically stable BCF yarns. The yarn texturizing includes a relatively low efficiency fluid jet texturizer, that is a fluid jet texturizer operating at a sufficiently low fluid jet velocity and a sufficiently high fluid jet temperature to obtain a yarn skein shrinkage of less than about 0.50 inch, more preferably about 0.25 inch or less. Most preferably, the BCE yarns are formed of nylon-6 and exhibit an alpha-crystalline content of less than about 45%, and usually between about 45% to about 55%.Type: GrantFiled: October 18, 2001Date of Patent: August 17, 2004Assignee: Honeywell International Inc.Inventors: Otto M. Ilg, Randall A. Sferrazza
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Patent number: 6635345Abstract: Morphologically stable BCF yarns, and the methods and systems for making such BCF yarns are provided. More specifically, the BCF yarn is melt-spun, drawn and textured. The yarn texturizing includes a relatively low efficiency fluid jet texturizer, that is a fluid jet texturizer operating at a sufficiently low fluid jet velocity and a sufficiently high fluid jet temperature to obtain a yarn skein shrinkage of less than about 0.50 inch, more preferably about 0.25 inch or less. Most preferably, the BCF yarns are formed of nylon-6 and exhibit an alpha-crystalline content of less than about 45%, and usually between about 45% to about 55%.Type: GrantFiled: April 15, 2002Date of Patent: October 21, 2003Assignee: Honeywell International Inc.Inventors: Otto M. Ilg, Randall A. Sferrazza
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Patent number: 6616438Abstract: Continuous anionic polymerization and melt-spinning of a polycaprolactam includes forming a reaction mixture by bringing at least two streams of liquid caprolactam respectively containing a polymerization initiator and co-initiator into contact with one another, and then subjecting the reaction mixture to anionic polymerization reaction conditions in the reactor zone to obtain a molten polycaprolactam. The molten polycaprolactam is the directly (i.e., without intermediate solidification) transferred to, and extruded through, a fiber-forming orifice of a spinneret to form a fiber thereof. A spinneret zone downstream of the reactor zone thus receives the molten polycaprolactam directly from the reactor zone and forms a fiber therefrom by extruding it through the spinneret's fiber-spinning orifice.Type: GrantFiled: June 13, 2001Date of Patent: September 9, 2003Assignee: BASF CorporationInventors: Dominick A. Burlone, Matthew B. Hoyt, Charles F. Helms, Jr., John A. Hodan, Richard Kotek, Carol W. Morgan, Randall A. Sferrazza, Fang A. Wang, Otto M. Ilg, Terry D. Roberts, Ronald G. Morrow
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Publication number: 20030075823Abstract: Morphologically stable BCF yarns, and the methods and systems for making such BCF yarns are provided. More specifically, the BCF yarn is melt-spun, drawn and textured. The yarn texturizing includes a relatively low efficiency fluid jet texturizer, that is a fluid jet texturizer operating at a sufficiently low fluid jet velocity and a sufficiently high fluid jet temperature to obtain a yarn skein shrinkage of less than about 0.50 inch, more preferably about 0.25 inch or less. Most preferably, the BCF yarns are formed of nylon-6 and exhibit an alpha-crystalline content of less than about 45%, and usually between about 45% to about 55%.Type: ApplicationFiled: April 15, 2002Publication date: April 24, 2003Applicant: BASF CorporationInventors: Otto M. Ilg, Randall A. Sferrazza
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Publication number: 20030077445Abstract: Morphologically stable BCF yarns, and the methods and systems for making such BCF yarns are provided. More specifically, the BCF yarn is melt-spun, drawn and textured. The yarn texturizing includes a relatively low efficiency fluid jet texturizer, that is a fluid jet texturizer operating at a sufficiently low fluid jet velocity and a sufficiently high fluid jet temperature to obtain a yarn skein shrinkage of less than about 0.50 inch, more preferably about 0.25 inch or less. Most preferably, the BCF yarns are formed of nylon-6 and exhibit an alpha-crystalline content of less than about 45%, and usually between about 45% to about 55%.Type: ApplicationFiled: October 18, 2001Publication date: April 24, 2003Inventors: Otto M. Ilg, Randall A. Sferrazza
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Patent number: 6465583Abstract: Continuous anionic polymerization and melt-spinning of a polycaprolactam includes forming a reaction mixture by bringing at least two streams of liquid caprolactam respectively containing a polymerization initiator and co-initiator into contact with one another, and then subjecting the reaction mixture to anionic polymerization reaction conditions to obtain a molten polycaprolactam. The molten polycaprolactam is the directly (i.e., without intermediate solidification) transferred to, and extruded through, a fiber-forming orifice of a spinneret to form a fiber thereof. One exemplary system to achieve such continuous anionic polymerization and melt-spinning of polycaprolactam includes a mixer for receiving and mixing at least two streams of liquid caprolactam respectively containing a polymerization initiator and co-initiator, and a reactor and melt-spinning apparatus downstream of the mixer.Type: GrantFiled: June 13, 2001Date of Patent: October 15, 2002Assignee: BASF CorporationInventors: Dominick A. Burlone, Matthew B. Hoyt, Charles F. Helms, Jr., John A. Hodan, Richard Kotek, Carol W. Morgan, Randall A. Sferrazza, Fang A. Wang, Otto M. Ilg, Terry D. Roberts, Ronald G. Morrow
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Patent number: 6447703Abstract: Processes and apparatus are provided whereby the morphology of bulked continuous filament (BCF) yarns can be variably controlled. More specifically, according to the present invention, the BCF yarn is melt-spun, drawn and textured, most preferably in a one-step spin-draw-texture (SDT) process, wherein prior to texturing, the yarn is subjected to a differential temperature condition. Most preferably, such differential temperature condition is accomplished using the duo rolls employed in drawing the BCF, such that one of the rolls is maintained at a greater temperature as compared to the other of the rolls. Most preferably, it is the upstream-most roll (relative to the general conveyance path of the filament toward the texturizer) which is the hotter of the duo rolls.Type: GrantFiled: June 22, 2000Date of Patent: September 10, 2002Assignee: BASF CorporationInventors: David M. Waddington, Ann S. Johnson, Randall A. Sferrazza
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Patent number: 6441109Abstract: Continuous anionic polymerization and melt-spinning of a polycaprolactam includes forming a reaction mixture by bringing at least two streams of liquid caprolactam respectively containing a polymerization initiator and co-initiator into contact with one another, and then subjecting the reaction mixture to anionic polymerization reaction conditions to obtain a molten polycaprolactam. The molten polycaprolactam is the directly (i.e., without intermediate solidification) transferred to, and extruded through, a fiber-forming orifice of a spinneret to form a fiber thereof. One exemplary system to achieve such continuous anionic polymerization and melt-spinning of polycaprolactam includes a mixer for receiving and mixing at least two streams of liquid caprolactam respectively containing a polymerization initiator and co-initiator, and a reactor and melt-spinning apparatus downstream of the mixer.Type: GrantFiled: December 30, 1999Date of Patent: August 27, 2002Assignee: BASF CorporationInventors: Dominick A. Burlone, Matthew B. Hoyt, Charles F. Helms, Jr., John A. Hodan, Richard Kotek, Carol W. Morgan, Randall A. Sferrazza, Fang A. Wang, Otto M. Ilg, Terry D. Roberts, Ronald G. Morrow
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Publication number: 20020058761Abstract: Continuous anionic polymerization and melt-spinning of a polycaprolactam includes forming a reaction mixture by bringing at least two streams of liquid caprolactam respectively containing a polymerization initiator and co-initiator into contact with one another, and then subjecting the reaction mixture to anionic polymerization reaction conditions to obtain a molten polycaprolactam. The molten polycaprolactam is the directly (i.e., without intermediate solidification) transferred to, and extruded through, a fiber-forming orifice of a spinneret to form a fiber thereof. One exemplary system to achieve such continuous anionic polymerization and melt-spinning of polycaprolactam includes a mixer for receiving and mixing at least two streams of liquid caprolactam respectively containing a polymerization initiator and co-initiator, and a reactor and melt-spinning apparatus downstream of the mixer.Type: ApplicationFiled: June 13, 2001Publication date: May 16, 2002Applicant: BASF CorporationInventors: Dominick A. Burlone, Matthew B. Hoyt, Charles F. Helms, John A. Hodan, Richard Kotek, Carol W. Morgan, Randall A. Sferrazza, Fang A. Wang, Otto M. Ilg, Terry D. Roberts, Ronald G. Morrow
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Publication number: 20020052452Abstract: Continuous anionic polymerization and melt-spinning of a polycaprolactam includes forming a reaction mixture by bringing at least two streams of liquid caprolactam respectively containing a polymerization initiator and co-initiator into contact with one another, and then subjecting the reaction mixture to anionic polymerization reaction conditions to obtain a molten polycaprolactam. The molten polycaprolactam is the directly (i.e., without intermediate solidification) transferred to, and extruded through, a fiber-forming orifice of a spinneret to form a fiber thereof. One exemplary system to achieve such continuous anionic polymerization and melt-spinning of polycaprolactam includes a mixer for receiving and mixing at least two streams of liquid caprolactam respectively containing a polymerization initiator and co-initiator, and a reactor and melt-spinning apparatus downstream of the mixer.Type: ApplicationFiled: June 13, 2001Publication date: May 2, 2002Applicant: BASF CorporationInventors: Dominick A. Burlone, Matthew B. Hoyt, Charles F. Helms, John A. Hodan, Richard Kotek, Carol W. Morgan, Randall A. Sferrazza, Fang A. Wang, Otto M. Ilg, Terry D. Roberts, Ronald G. Morrow
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Patent number: 5535945Abstract: Process and system for reclaiming polymeric fibers (e.g., nylon) from post-consumer carpeting includes shredding the post-consumer carpeting into strips, dismantling the carpet strips to form a mixture of the fibers to be reclaimed and the backing material to be discarded, and then separating a substantial portion of the fibers from the backing material. Preferably, the carpet strips are dismantled by impacting the strips of carpeting against an anvil structure with hammer elements using, e.g., a hammermill. A secondary reclamation system is provided whereby the separated backing material which may contain some fibers bound thereto is subjected to secondary dismantling and separation operations. The fractions obtained from the primary and secondary separation operations containing predominantly the polymeric fibers may thus be combined so as to form a process discharge stream which can be pelletized and/or baled as desired.Type: GrantFiled: February 27, 1995Date of Patent: July 16, 1996Assignees: BASF Corportion, Shred-Tech LimitedInventors: Randall A. Sferrazza, Alan C. Handermann, Cecil H. Atwell, David K. Yamamoto