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  • PP (Polypropylene) PPprint 721


    New product

    15 Items

    36,45 €tax excl.
    44,10 €tax incl.

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    Functional end pieces with resistance to breakage, chemical resistance, non-hygroscopic and translucent.

    Polypropylene is a technical material widely used in the industry for presenting really remarkable properties as a whole. Its low weight coupled with interesting mechanical properties such as good breaking strength, high chemical resistance and being semi-flexible, make PP very used in technical applications. It is also a fully recyclable material at the end of its useful life, sterilizable, dishwasher safe and non-hygroscopic (does not absorb moisture). After seeing the whole set of advanced properties of this material, it is normal for the industry to use PP in the automotive, electrical and appliance manufacturing sector, food packaging, textile products, as well as in architecture and construction, art and fashion , sports and leisure, and medical attention.

    But polypropylene has a drawback in the case of 3D FDM printing, its printing difficulty. This is due to its lack of adhesion with other materials, its high coefficient of thermal expansion and the need to have a cabin or controlled environment, in addition to not being able to use the layer fan. But the German manufacturer PPprint has developed a filament that avoids all these problems and also behaves stably in the vast majority of FDM 3D printers on the market, called PPprint 721.

    Users can now easily make polypropylene pieces thanks to this filament. This helps many professionals to improve their production to get really tough parts, complex and with many applications with great ease. Its printing facility is such that it needs an extrusion temperature of only 200-220ºC, a temperature that can be reached by most FDM 3D printers on the market, even for non-professional use. In addition, PPprint has developed a special printing base, to print the PPprint 721 without having warping problems in any case and regardless of the size of the piece.

    Although Polypropylene as a material is certified for contact with food (FDA), PPprint 721 is not, since when making the formulation to obtain better printing properties, it fails to fulfill this property that does comply with the generic material.

    With this filament you can get functional end pieces with resistance to breakage, chemical resistance, non-hygroscopic and translucent, ideal characteristics to make pieces as complex as custom-made conduits for any type of fluid.

    Elongation at break (%) 600
    Tensile strength (MPa) 19.6
    Flexural strength (MPa) 35.1
    Flexural modulus (MPa) 660
    Flexibility Flexibility
    Machinable Machinable
    Chemical resistance Chemical resistance
    Hide color variations (Hide color variations)

    The main problem that can occur when using PPprint filament is the warping effect. To combat this problem, the user can use PP tape or Magiggo PP, a special adhesive for this type of material.

    An specific and effective method to combat the warping effect with polypropylene filaments is the PPprint PP adhesion base. This accessory has a sheet that can be easily placed and removed on any type of printing base.

    It is very important to remove the filament from the 3D printer once finished manufacturing and store it in the original storage to preserve its mechanical and printing properties.

    Printing bridges with PP can be complicated, that is why, for standard use, it is advisable to use media as they help to avoid failures in 3D printing. The strongest parts can be achieved by increasing the temperature up to 215-230 °C, where the layers adhere more.

    The maximum standard speed of the part cooling fan is 15 % from the tenth layer. If you want to print difficult parts or models with overhangs and supports, it can reach 50 %. It is very important to be careful with the cooling fan speed of the part. Too much flow can increase the deformation effect.

    General information
    Manufacturer PPprint (Germany)
    Material PP-Polypropylene
    Format Pack of 50 g
    Spool of 600 g
    Density 0.9 g/cm3
    Diameter of filament 1.75 mm or 2.85 mm
    Diameter tolerance ±0.10 mm (1.75 mm)
    ±0.10 mm (2.85 mm)
    Filament length ±277 m (Ø1.75 mm-0.6 kg)
    ±104 m (Ø2.85 mm-0.6 kg)
    Color Natural
    RAL/Pantone -
    Print settings
    Printing temperature 200-220ºC
    Print bed temperature 50-80ºC
    Chamber temperature 65-80ºC
    Cooling fan Recommended
    Mechanical properties
    Izod impact strength -
    Charpy impact strength -
    Elongation at break (ISO 527) >600%
    Tensile strength (ISO 527) 19.6 MPa 
    Tensile Modulus -
    Flexural strength (ISO 527) 35.1 MPa
    Flexural modulus (ISO 527) 600 MPa
    Surface hardness
    Thermal properties
    Softening temperature -
    Melting temperature (ASTM D3418) 137ºC
    Specific properties
    Transparency -
    Additional Information
    HS Code 3916.9
    Diameter coil (outer) 200 mm 
    Diameter coil (inner hole) 55 mm 
    Coil Width 50 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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