Engineer Injection Molding

Sam Zhi

Cell: 248-***-****

Email: ****@*******.***

**** ******** ****.

Troy, MI 48084

Objective:

Seek a challenging engineer position in polymer/plastic products manufacturing, product development or R&D field

Summary:

Master degreed polymer/plastic engineer with more than ten years polymer/plastic products manufacturing, product development, R&D and quality assurance experience in automotive, building materials, packaging industry; Self-motivated individual, team player, diligent and dependable

Professional Strength:

* Thorough understanding of plastic material development cycle, including recipes design/development, process design/optimization, material validation and approval as well as quality control and assurance;

* Extensive hands-on experience with various plastic processing methods such as extrusion, injection molding, RIM, roller mill mixing and blow molding;

* Familiar with plastic compounding technologies, including cross-linked PE foam, shape-memory PE, Nylon, and extrusion rigid foamed PVC;

* Strong lab skills in plastics/polymer testing and characterization, including properties characterization (density, FTIR), mechanical testing (INSTRON, Impact, lap shear), thermal analysis (DSC, TGA, TMA, DMA), flammability testing and foam, coating and adhesive related testing;

* Hands-on experience with plastic secondary operations including vibration welding, hot tool welding, laser welding, spin welding and etc.;

* Work experience with chemical cross-linked PE foam material development, including formulation, raw materials evaluation, material approval and component materials substitution;

* Work experience with automotive interior/exterior trim used PBT/Nylon materials analysis, properties improvement and injection molding process optimization;

* Work experience with rigid foamed color PVC board extrusion, PE pipe extrusion; PP/PC injection molding and PE blowing molding;

* Familiar with RJG system operation and data analysis for injection molding process optimization;

* Proficient in Microsoft Office applications (Excel, Word, PowerPoint and Project);

* Familiar with CAD design tools such as CATIA V5 and Solid Works;

Experience:

07/08 ~ 02/10 Plastics Material Engineer, Cobasys LLC, Orion, MI

* Developed hybrid electrical vehicle used NiMH battery module barrier film, including film material selection, specification development, test method development and film validation;

* Developed barrier film assembling process, including process creation, evaluation and optimization;

* Optimized battery plastics housing assembling process, evaluated weld joint integrity and validated parts performance;

* Selected plastics material and completed housing profile design for new concept battery;

* Led new products assembly trial and completed trial evaluation

06/07 ~ 07/08 Process Engineer, Armacell LLC, South Holland, IL

Responsible for chemical cross-linked PE foam manufacturing and process improvements, major duties including:

* Conduct lab-scale experiment, new product development and raw materials evaluation and approval;

* Develop and oversee various manufacturing process including continuous foam process (extruder, oven, take off), batch foam process (kneader mixing, press process) and secondary operation (foam lamination/skive), troubleshooting raw materials, products and process related technical issues;

* Conduct quality assurance and quality control for various raw materials and end products;

* Perform plant environmental management, including permit application, report preparation and submission as well as continuous maintenance and inspection

Major achievements include:

* Achieved more than $0.5 MM annual raw material cost reduction by investigating and implementing material substitutions;

* Improved batch foam line work efficiency by 20% by conducting process study and analysis, reducing labor cost and production cycle time;

* Increased continuous foam production line speed by 10% by conducting process and layout analysis;

* Reduced raw material cost by redesigning foam formulation which reduced foam density by 10%

01/02 ~ 12/06 Chemical Engineer (Contract) Delphi Automotive Research Labs, Shelby Township, MI

* Developed test methodology and analyzing formulas for Delphi Research Lab Kleiss gear testing system, including worm and spur gears;

* Improved tester design, test software and calibration procedure for Delphi Saginaw Steering Systems;

* Developed automotive used PBT/Nylon injection molding process for Delphi Packard project by conducting materials analysis and developing property variation model which relates to cycling time, injection speed, back pressure and temperature setting profiles;

* Optimized injection molding process for Delphi Packard project by utilizing RJG data analysis system;

* Developed PP/PE/PBT based plastics fire shield material compounds and PP/PBT based intumescent fire shield material compounds for automotive interior/exterior trims applications

9/99 ~ 4/01 Research Assistant, Polymer Institute, University of Detroit Mercy, MI

* Researched various PET and PBT films for electronic circuit board base application by applying 60Cobalt source for irradiating in-layer polyester electronic circuit board;

* Developed automotive headliner scrap recycling process by applying isocyanate-based binders;

* Developed ionizing radiation resistant polyurethane temperature cure elastomer composite;

* Developed waterborne urethane coating system and conducted reactivity kinetic property study; Conducted property analysis using TA instruments (DSC, TMA, DMA, TGA), FTIR, INSTRON, etc.

7/95 ~ 11/98 Chemical Engineer Beijing Institute of Construction Materials, China

* Developed and launched low foamed color PVC board extrusion systems for construction applications;

* Developed multi-color spray acrylic coating system for building interior applications

9/93 ~ 6/95 Research Assistant Beijing University of Chemical Technology, China

* Developed polymeric flame retardant for FR grade HIPS compound used for electronic housing

7/89 ~ 8/92 Process Engineer China Academy of Radiation Protection, China

* Developed radiation initiated cross-linking shape-memory polyethylene cable sheath application;

* Developed cross-linked PE foam for high impact absorption instrument packaging;

Education:

* 05/01 M.S. in Chemical Engineering, University of Detroit Mercy, Michigan, USA

* 07/95 M.S. in Polymer Engineering, Beijing University of Chemical Technology, China.

* 07/89 B.S. in Polymer Science, Beijing University of Chemical Technology, China.

Other:

US citizen, available to work for any U.S employer without sponsorship

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