Transcription of DuPont Delrin acetal resin Molding Guide
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TECHNICAL INFORMATIONDuPont Delrin acetal resinMolding GuideiiiiiTable of Contents PagesGeneral Information ..1 Description ..1 Compositions ..1 Safety Precautions to Observe When Molding Delrin acetal Resins ..2 Packaging ..3 Polymer Structure and Processing Behavior ..4 Glass Transition and Melting ..4 PVT Diagrams ..4 Heating-Cooling Behavior ..6 Viscosity and Rheological Behavior ..6 Injection Molding Unit ..8 Screw Design ..9 ELCee Screw for Optimum Productivity ..10 Cylinder Temperature Control ..10 Cylinder Adaptor ..10 Non-Return Valve (Back Flow Valve BFV) ..10 Nozzle ..11 Evaluation of Melt Quality ..11 Molds ..13 Ability to Fill ..13 Gates ..14 Runner System ..16 Nozzle and Sprue ..17 Hot Runner Mold for Crystalline Polymers.
1 General Information Description Delrin® acetal resins are semi-crystalline, thermoplastic polymers made by the polymerization of formaldehyde, and are also commonly referred to as polyoxymethylene (POM) . They have
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