Digital Journal

eSUN Provides an In-depth Exploration into “What is 3D Printer Filament Made Of”: Understanding the Composition of These Essential 3D Printing Materials


The advent of 3D printing has revolutionized industries, from medical to automotive, allowing the transformation of digital designs into physical objects with ease. Central to this technology is the 3D printer filament, but what exactly is this filament made of? Let’s delve into this topic with insights from eSUN, a global leader in the manufacturing of 3D printing materials.

Primarily, 3D printer filaments are made of thermoplastic polymers. These are materials that become pliable when heated to a specific temperature and harden upon cooling, perfect for the layer-by-layer construction process of 3D printing.

One of the most common types of 3D printer filament is Polylactic Acid or PLA. eSUN’s PLA filament is derived from renewable resources like cornstarch or sugarcane, making it biodegradable and environmentally friendly. PLA is easy to print with, provides good dimensional accuracy, and offers a wide range of colors.

In addition to standard PLA, eSUN also produces PLA+, which undergoes a special process to enhance its strength, toughness, and smoothness. Like PLA, it’s also derived from plant-based resources, but with improved properties, it caters to more demanding printing needs.

For outdoor applications, eSUN’s ASA filament stands out. ASA (Acrylonitrile Styrene Acrylate) is a UV-resistant material derived from petroleum-based products, known for its robustness and ability to withstand varying weather conditions.

There’s also the TPU filament, a type of flexible, rubber-like filament that’s perfect for creating items requiring elasticity. TPU, or Thermoplastic Polyurethane, combines the mechanical properties of plastic with the elasticity of rubber.

Moreover, for users seeking a unique aesthetic, eSUN’s wood filament consists of PLA mixed with wood dust or fibers, which when printed, mimic the appearance and texture of real wood.

In conclusion, 3D printer filament is primarily made of thermoplastic polymers, with varying compositions depending on the specific type of filament. Whether it’s PLA, PLA+, ASA, TPU, or wood filament, each material offers unique properties that cater to different printing requirements and applications. By understanding what these filaments are made of, users can better select the appropriate material for their 3D printing projects. Discover more about these essential 3D printing materials by visiting eSUN’s website and exploring their comprehensive filament range.

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