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PLA filament

PLA filament is a material that serves as a filler for 3D printers working on FDM technology, where the object is created by gradually depositing molten material layer by layer. It can be thought of as a thin plastic string wound on a spool that is fed into the printer. The name PLA stands for 'polylactic acid'. It is a bioplastic, which means it is made from renewable natural resources such as corn starch or sugar cane. This makes it biodegradable under the specific conditions of industrial composting. During the actual printing process, the material is melted at relatively low temperatures, typically between 190 and 220 °C. It does not necessarily require a heated printing pad and has little tendency to shrink and curl on cooling, a phenomenon where the corners of the print come off the pad. It also does not release a strong odour during printing. The resulting PLA prints are relatively strong and hard, but have lower toughness and are rather fragile. This means that they tend to crack, not bend, under heavy stress. Their main weakness is their low heat resistance; the material softens at temperatures of around 60 °C, making them unsuitable for components exposed to higher temperatures, for example in the interior of a car in summer. Due to its properties and ease of processing, PLA filament is mainly used for printing visual models, prototypes, decorative objects and toys that are not subject to mechanical stress or high temperatures.

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