Focus on materials: TPC 91A


Kimya’s family of thermoplastic elastomers (TPEs) is expanding! We would like to introduce to you our new filament, TPC-91A, derived from the copolymerization of two types of monomers. Here is a look back at the main characteristics and uses of TPC-91A Kimya.


Our TPC-91A is part of the same family of polymers as our TPU-92A: TPEs or ThermoPlastic Elastomers.  These materials combine the elastic properties of elastomers with the reversible properties of thermoplastics. These TPEs are either a blend or a copolymerization of two monomers.


TPC-91A is a block copolymer

Our filament is made up of a block ester which is the rigid part of the material and a flexible part which is a block ether. This polymer is found mainly in sports shoes, especially ski boots, waterproof sheeting for roofing, low-melt adhesives and some medical equipment. It can also be used to make ties for plastic bags or even stops for doors and door handles.


bag closures printed with TPC-91A


The thermoplastic elastomers are well-known for their hardness, measured on the Shore hardness scales (Shore 00, Shore A and Shore D) which evaluate the rigidity of a material.  TPC-91A has a hardness of 91 Shore A for 100% filling of the printed part.


TPU-92A and TPC-91A have hardnesses of 92 and 91 shore A respectively for 100% filling of the printed part. The hardness of the material varies according to the printer and the chosen print settings.

What are the properties of  TPC 91A?

TPC-91A has many interesting features for  industry in general. These include the following:

  • Easy to print : Flexible filaments often generate problems with power supply and drive during printing. TPC-91A is more printer-friendly than other flexible filaments.
  • Excellent elasticity: TPC-91A can be stretched up to 500% of its initial size before breaking.
  • Good impact resistance: TPC-91A resists shocks without breaking.
  • Good chemical resistance
  • Excellent flexibility: TPC-91A can withstand bending and tearing.

TPC-91A can be used for industrial applications in sectors such as electronics, as well as for 3D printing for decoration and leisure.


3D printed door stops with Kimya’s TPC-91A


Below is a comparative table highlighting the main differences between Kimya flexible filaments TPU-92A and TPC-91A:

Nozzle temperature (°C) 210 – 250 230 – 270
Print surface temperature (°C) 20 – 90 60 – 85
Print speed (mm/s) 20 – 70 20 – 60
Easy to print + ++
Elongation at tensile breakage (%) > 350 > 500
Chemical resistance, heat resistance, abrasion resistance ++ +


Which 3D printing parameters should be considered?

Extrusion temperature 230-270° C
Plate temperature 60-85°C
Print speed 20-60 mm/s


Print settings are specific to each 3D printer; we recommend that you carry out a few tests to find the most suitable. Please don’t hesitate to contact our sales team if you need any help in making the right choice!