Goals of this Course:

    • Exercise greater control over the molding process
    • Reduce rejects and scrap
    • Improve quality

    This comprehensive, two-lesson, three-hour training course demystifies plastic drying by explaining how plastic drying is done, how to check drying operations, and how to troubleshoot problems caused by incomplete moisture removal. In addition, this course discusses the operation, control and maintenance of the three basic dryer designs – hot air, desiccant, and refrigerant-dehumidifying.

    Many of today’s engineering grade resins and other moisture-sensitive materials must be properly dried prior to processing. Absorbed and surface moisture must be removed to avoid molded part splay and plastic degradation. Plastic drying is one of the most misunderstood technologies on the molding floor! This program explains how it’s done, how to check dryer operation and how to troubleshoot problems. Three common drying systems are taught: hot air, desiccant, and refrigerant-dehumidifying systems. Each are explained from their operational, control, and maintenance characteristics.

    Lesson 1: Principles of Drying

    This lesson establishes the background and basics of drying, from the effects of moisture on molded parts to the theories of dryer operation. Defined terms include hygroscopic, relative humidity, dew point, weight percent, vapor pressure differential, closed loop, and open loop.

    Lesson 2: Dryer Operation, Control and Maintenance

    This lesson deals with the functional characteristics of three common drying approaches: hot air, desiccant, and refrigerant dehumidifying systems. The purpose of this instruction is to help personnel set up, operate, and maintain their drying equipment to avoid production problems caused by incomplete moisture removal.

    Demo Video

    • }Length: 2 Lessons - 2-3 Hours of Training
    • Language: English
    • *Recommended for: Production personnel, supervisors and managers
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