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  • Thermoactive PLA

    Spectrum Filaments

    New product

    28 Items

    14,01 €tax excl.
    16,95 €tax incl.

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    PLA-based filament that changes from red to natural with temperatures above 30 ºC.

    Spectrum is a European company based in Poland that focuses on the production of consumables for FFF / FDM technology 3D printers under the Spectrum Filaments brand.

    Within its range of materials is the Thermoactive PLA. This material is based on its standard PLA filament, added with a thermochromic pigment. Thanks to this, the thermoactive PLA filament has a unique property: its color changes with temperature.

    PLA Thermoactive
    Image 1: 3D printed object with the thermoactive PLA filament. Source: Spectrum Filaments.

    At a temperature below 30 ºC, the color of the filament is red. However, when a temperature of 30 ºC or more is reached, the color turns beige / natural. With this peculiar feature, the PLA Thermoactive filament is perfect for printing objects where changes in temperature must be visually perceived. Thus, this material is suitable for:

    • Educational projects
    • Thermometers
    • Coating for hot beverage containers
    • Coating for boilers and thermostats for other electronic devices

    Furthermore, the Thermoactive PLA filament has good deformation resistance, no shrinkage after cooling, durability and stability during printing. It does not require a hot bed for printing and has a great layer adhesion. All these characteristics make Thermoactive PLA an easy material to print with almost any 3D FDM printer, obtaining very good results.

    Each coil of PLA Thermoactive filament is presented packed with the original packaging of Spectrum Filaments.



    Image 2: Packaging of the thermoactive PLA filament. Source: Spectrum Filaments.

    Inside is the filament coil, vacuum packed with a desiccant bag, so that the material maintains its properties intact. For vacuum packaging, aluminum foil with ZIP closure is used, which allows the user to save the filament after use and prevent moisture absorption. In addition, it includes a user manual to get the most out of the material.

    Tensile strength (MPa) 60
    Tensile modulus (MPa) 3.5
    Softening temperature (ºC) 55
    Hide color variations (Hide color variations)

    When printing with Thermoactive PLA, it is recommended to take into account the following aspects:

    For 3D printing with Thermoactive PLA, it is not necessary that the printing base is hot although, if possible, it is recommended that the base be at approximately 45ºC, to avoid the appearance of any small indication of warping.

    The recommended extrusion temperature for this material is between 190 ºC and 220 ºC depending on the printer used, and it is recommended to print at a speed of between 40 and 110 mm / s. The article on our 3D printing blog explains about the main questions of 3D printing in PLA and ABS.

    If your printer has a layer fan, it is recommended that you turn it on for best results. If you need to print very thin and tall pieces, you will see that PLA plastic does not give enough time to harden in each layer, so the piece will look as if it has melted. To solve this problem we give you a very simple tip, print at least 2 pieces at the same time, and place them separately on the base. In this way, while the extruder moves from one part to another, the plastic has time to harden in each layer, achieving a much better result.

    Adhesion of the first coat is key and probably one of the most important factors in obtaining good impressions. so you can use Blue Tape, BuildTakMagigoo or 3DLac.

    It is also recommended to configure the "raft", which consists of creating a first thick layer, like supports, that will not suffer this contraction and on which the piece will be printed. The downside to using the raft is that this first coat will look less smooth.
    It is recommended to lower the density of the “infill” parameter so that the piece stores less heat. As for the parameter "brim" (the membrane that is created around the piece) it is recommended to adjust it in thicknesses never greater than 5mm to help the first layer not peel off.

    As for the temperature of the interior where it is going to print, it is recommended that it be controlled and that there are no drafts.

    Regarding printed parts, it should be noted that, due to the softening temperature of PLA, from 55-60 ºC the material itself softens, so it's not recommended to expose printed parts to these temperatures.

    General information
    Manufacturer Spectrum Filaments
    Material Thermoactive PLA
    Format Roll of 500 g
    Density -
    Diameter of filament 1.75 or 2.85 mm
    Diameter tolerance ±0,05 mm
    Filament length 1.75 - 167.6 m
    2.85 - 63.2 m
    Color Red (becomes natural / beige if the temperature is above 30 ºC)
    RAL/Pantone -
    Print settings
    Printing temperature 190 - 220 ºC
    Print bed temperature 20-50 ºC
    Chamber temperature Not necessary
    Cooling fan Recommended
    Nozzle diameter -
    Mechanical properties
    Izod impact strength -
    Charpy impact strength 16 J/m
    Elongation at break -
    Tensile strength 60 MPa
    Tensile Modulus 3.5 MPa
    Flexural strength  -
    Flexural modulus -
    Surface hardness -
    Thermal properties
    Softening temperature 55 ºC
    Melting temperature -
    Specific properties
    Transparency  Opaque
    Additional Information
    HS Code 3916.9
    Diameter roll (outer) 200 mm
    Diameter roll (inner hole) 52 mm
    Roll  width 52 mm


    * The typical values detailed in this table should be considered as a reference. Actual values may vary depending on the 3D printer model used, part design and printing conditions. We recommend confirming the results and final properties with own tests. For more information you should consult the technical data sheet of the product.

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