Larry W. Crovatt
Plastics Industry Consultant
2426 Persian Dr.
Bldg 56; Ste 14
Clearwater, FL 33763
Office Phone: (850) 375-6757
E-mail: LarryCrovatt@gmail.com
Web: www.larrycrovatt.com
Hello, I’m Larry Crovatt plastics consultant. Welcome to my Web site!
· Over forty years of Plastics Technology experience with Major Medical and Industrial Polymer Manufacturers. (e.g. Johnson & Johnson Medical, Monsanto Plastics Corporation, and others).
· Major strengths in Extrusion, Polymer Synthesis, Melt Processing, Equipment Selection, and Facility Layouts.
Principal Areas of Expertise are the following:
Medical and Industrial Tubing Extrusion
Medical and Industrial Injection Molding
Medical and Industrial Wire Coating
Compound Mixing and Drying Operations
Extrusion (tubing, wire coating, monofilaments, film, and other)
Polymer Synthesis (Polyurethanes, Nylons, Polyesters, and other)
Injection Molding and Materials Handling Operations
Product Testing and Packaging
SPC turn-key Process Validations and Operator Training
Excellent working relationships with highly reliable ‘outside testing laboratories’.
For quickest response I invite you to email me at LarryCrovatt@gmail.com or text me at 850-375-6757 to discuss your program needs. You can also leave a message on my office line at 850-375-6757. We can then determine how I may best be of assistance in helping you achieve your goals in the most cost effective and ‘timely manner’.
After hearing from you I would be happy to supply you with my Consulting Fee Schedule including references for your review and consideration. The schedule outlines the general manner in which I conduct my service and can be modified to best serve the client’s needs.
DETAILS…AREAS OF EXPERTISE (HANDS ON SUPPORT)
Lab Scale Custom Synthesis through Pilot Plant and Production level scale-up.
Experienced in Continuous and Batch Polymerization Manufacture
Pre-polymer and One-Shot Polyurethane Polymerization Processes
Lab and plant facility floor plans and layouts
Reactor Equipment selection
Polyurethane Meter Mix & Dispense Reactors
Polyurethane Continuous Twin Screw Compounding Reactors
Stirred Kettle Batch Reactors
Turn-key Startup, through Equipment, Process and Product Validations
Personnel training through validation and startup productions
R&D through Manufacture scale-up operations in:
Heart pacemaker lead tubing development and production
Intravenous and Balloon Catheter tubing
Surgical Suture monofilaments
Specifying of equipment components and installation
Turn-key Startup including Equipment, Process and Product Validations
Expert in Screw design selection
Expert in Tooling (die design) selections
Training of lab and manufacturing personnel
R&D through Manufacture scale-up in ultra-thin layer “fluoropolymer” coated Medical grade fine wire.
Specifying of equipment components and installation
Turn-key Startup including Equipment, Process and Product Validations
Screw design selections
Tooling (die design) selections
Training of lab and manufacturing personnel
Custom polymer synthesis
Raw material monomer ingredients expertise
Additive modifiers
Stabilizer selections
Colorant selections
Reinforcing agents
Expertise in the molding and extrusion process in the Industrial Applications end-use areas (e.g. Nylons, Polyurethanes, Polyesters, Polyacetals, Polycarbonates, Polysulfones, and others)
Injection, Ram, and Compression molding and technology.
Medical and Industrial Tubing extrusion
Monofilaments extrusion (e.g. consumer personal and industrial brushes)
Extruded rod, sheet, profile, and slab.
Extruded film (lay-flat and blown)
Wire coating (e.g. medical, cable, industrial and automotive)
Equipment Sourcing and Selection Assistance
Turn-key Startup, through Equipment, Process and Product Validations
Personnel training through validations
Design of Experiments, including Process Validation, Equipment Selection and Floor Plan Layouts
FDA Validations (IQ/OQ/PQ)
Polyurethanes, Silicones, PEEK and others
Balloon & IV Catheter tubing extrusion process developments.
Molding process development through validations
Superior quality
Smooth surface properties
Significantly reduced or eliminated 'stress cracking tendency'
Preparation of Polymeric Wear Debris Particles for FDA Biological Response Studies
Polyurethane ‘Gel-free Extrusion’ and Molded Products
Achieved through the utilization of special design state-of-art ‘’’micron filtration’’’ technology combined with other requirements in equipment design setup and processing conditions.
Twin Screw Compounding Extrusion Expertise
Equipment Selection and Process Development
Causes of and Corrective Action
Recommendations on Incoming Raw materials and Finished product
Excellent knowledge and working relationships with highly reliable outside testing laboratories including several university lab services and other technologists.
Broad background knowledge in this area, including:
Applied Melt Rheology (MFI and Instron Melt Rheometry)
Molecular Weight Investigation Considerations (e.g. GPC)
Crystallinity/morphological studies and influence on properties.
Moisture analyses (accuracy +- 0.002%) and influence on properties.
DSC, DMA, TGA, FTIR, HPLC, SEM, Mass Spectroscopy and other.
Physical properties (tensile, modulus, impact, creep, etc.)
Expert Witness (e.g. Research assistance on Patent Infringement questions/issues)
Laboratory and Plant Operations
PROFESSIONAL EXPERIENCE
JOHNSON & JOHNSON MEDICAL
Principal Scientist (R&D Implantable Products
MONSANTO ENGINEERING PLASTICS CORPORATION
Group Leader R&D
EDUCATION
BAYLOR UNIVERSITY (DEPARTMENT OF CHEMISTRY)
Post Graduate Polymers Research
UNIVERSITY OF NORTH CAROLINA
Master of Science (Polymer Chemistry)
UNIVERSITY OF GEORGIA
Bachelor of Science in Chemistry
REFERENCES
Available on Request
FEE SCHEDULE
I would be very happy to supply you with my Consulting Fee Schedule for your review and consideration. The schedule outlines the general manner in which I conduct my service and can be modified to best serve the client’s needs.
I invite you to contact me:
Email: LarryCrovatt@gmail.com
Text: (850)375-6757
Together we can determine how I may best be of assistance in helping you achieve your goals in the most cost effective and timely manner.
Thanks!
Larry Crovatt