rotational molding - plastics materials and processing (mfg 355)旋转成型塑料材料和加工（制造355）.pptVIP

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rotational molding - plastics materials and processing (mfg 355)旋转成型塑料材料和加工（制造355）.ppt

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rotational molding - plastics materials and processing (mfg 355)旋转成型塑料材料和加工（制造355）

The Method – IAT Profile * The Method – IAT Profile * The Method – IAT Profile * The Method – IAT Profile * The Method – IAT Profile * The Method – IAT Profile We can thus observe: When powder first sticks to the mold When the powder has been consumed When optimal melt sintering has occurred When solidification is occurring When the plastic separates from the mold A B C D E * The Method – IAT Profile The Peak Internal Air Temperature (PIAT) is the key process control parameter and is independent of all other process variables (point C) C * The Method Other important (QUB) developments Pressurization (Dynamic Venting) Permanent temperature feedback (K-Kontrol) RotoSim computer simulation Worldwide training seminars and consulting PPRC – Rotomolding division * Presentation Outline Introduction The Materials The Machines The Molds The Method Conclusion * Conclusion Though in a state of infancy, Rotomolding offers unique advantages over other plastics processes There are endless opportunities for research and development Rotomolding has a very promising future, more so than many competing processes * Acknowledgements Thank-you to Dr. Brent Strong for providing me with this opportunity Thank-you for your attention * ? * * * * * * * Fixed Carousel Machines * Independent Carousel Machines * Electric Machines * The Machines The “ARM” and “PLATE” * Presentation Outline Introduction The Materials The Machines The Molds The Method Conclusion * The Molds Materials Steel Mild Stainless Aluminum Cast Machined Plate * The Molds Anatomy Frame and Spider Two or more sections (with draft) Parting line with alignment features Clamping hardware and pry-points Vent (breather) tubes Texture and other features Release agents * The Molds – Frame and Spider * The Molds - Mold Sections * The Molds - Parting Line * The Molds - Parting Lines * The Molds - Parting Lines * The Molds - Clamping Hardware * The Molds – Pry Points * The Molds - Vents * The Molds - Vents * The M