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Thermoforming is the process of heating plastic sheet to a pliable state and forming it into shape. It has advantage over other process such as injection molding and blow molding as the process is fast, cost efficient and ease of fabrication of larger parts.
The article begins with the introduction of thermoforming, the history tracing back to 1800s and modern thermoforming. The main focus of the article is on polypropylene thermoforming. Polypropylene is special and is considered a competitor to polystyrene PS, polyvinyl chloride PVC and Acrylonitrile polyethylene terephthalate PET. This is due to competitive price, low density means lower weight and capacity to withstand high temperatures.
The article then moves on to define various steps in polypropylene thermoforming such as heating, thermoforming including Drape thermoforming, vacuum thermoforming and plug assisted thermoforming and last steps such as cooling an trimming, and its impact on the quality of finished product.
My role as a co-author was to furnish information related to methods and steps in thermoforming.
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