PLASTIC PRODUCT FAILURE ANALYSIS Excelplas Polymer Technology and Testing Plastics and Material Consultants. Comprehensive investigation into product failure, inspection & testing, failure analysis, technical reports and expert evidence in litigation. Specializing in determining the cause of failure of plastic consumer products, plastic industrial components, plastic medical devices and plastic packaging. DR. JOHN SCHEIRS is the Principal Consultant with ExcelPlas Polymer Technology and Testing specializing in Polymer Degradation, Polymer Recycling and Failure Analysis of Polymers. John has also worked extensively with biodegradable plastics, their structure, properties and applications and holds three patents in the area.