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Control of moisture content in the resin is essential for producing quality plastic parts. This is especially so for hygroscopic resins (ABS, nylon, polycarbonate, PET, etc), yet it is an often-overlooked step of the injection molding process. Excess moisture in the resin can show up as splay (or silver streaks) or may manifest itself later as brittle broken parts. The former can be visually caught and rejected, but the latter may make their way into the customer’s hands. And both will hit the bottom line of reduced profits. Moisture control starts with properly drying the resins, but the only real step that matters is the measurement of the moisture content after drying. And this is where many molders are lacking. This KnowHow Webinar will present the defects caused by excessive moisture, the proper steps of drying, cases from industry demonstrating the real missteps of controlling moisture content, and case studies of real defects.
Mr. Alex Lau holds a B.Sc. in Mechanical Engineering from University of Manchester, and has worked in the R&D’s of several prominent global MNC’s (Novatel Calgary, NORTEL Calgary, Motorola Penang, Agilent Penang, and Seagate Seremban). He has >30 years experience, specializing in the design and development of parts/products that are toolable and manufacturable, and that function flawlessly in their intended applications. His CAE simulations (FEA, Moldflow, CFD) in product development have consistently predicted accurate results that correlate very well with the actual applications. Mr. Lau applies his knowledge in engineering fundamentals, design guidelines, and CAE simulation to achieve ‘Do It Right the First Time’. This had resulted in projects staying on schedule, on-cost, and on-quality virtually every time. He has trained engineers in many MNC’s, SME’s, and Skills Development Centres, over the years. Mr. Lau is a certified PSBM (HRDF) trainer, as well as a holder in Certified Advanced and Expert Scientific Injection Molding. He also holds US Patent 6853492 Conductive Lens.