Lightweight flexible filament with active foaming technology

LW-PET FLEX NATURAL is an advanced lightweight technical filament designed for functional applications where both weight and mechanical flexibility are important. It offers a useful balance between strength, toughness and controlled flexibility.

Active foaming technology enables the production of lightweight parts with a lower density. This positions the material between conventional rigid lightweight filaments and highly flexible foaming materials.

Additional flexibility and toughness

Compared with conventional rigid materials, LW-PET FLEX offers greater flexibility and improved resistance to impact and deformation. At the same time, it retains considerably more structural stability than very soft flexible filaments.

This balance makes LW-PET FLEX particularly suitable for lightweight functional components that need to bend and absorb mechanical loads without failing through brittle fracture.

Active foaming for reduced part weight

During extrusion, the material can expand, increasing its volume and reducing the density of the printed part. This allows significant weight savings compared with printing the same geometry without expansion.

The degree of expansion can be influenced through settings such as temperature, printing speed and material flow. This gives users additional control over the balance between density, weight, flexibility and mechanical performance.

More than just a lightweight material

Reducing density through foaming can also change the mechanical behaviour of a printed part. As expansion increases and density decreases, parts can become lighter and more compliant under load.

The material can therefore be adapted to different applications: print at a higher density when additional structural stability is required, or increase expansion when lower weight and greater flexibility are more important.

Developed for lightweight functional applications

LW-PET FLEX NATURAL is particularly suitable for parts where weight reduction without excessive brittleness is important. Potential applications include drones, RC components, protective structures, lightweight enclosures, wearable components, damping structures and other functional parts exposed to bending, vibration or occasional impacts.

It is also an interesting choice for larger lightweight designs where conventional rigid materials would add unnecessary mass and very soft flexible materials would provide insufficient structural stability.

Weight: Reduced through controlled expansion
Flexibility: Adjustable through printing conditions
Mechanical behaviour: Tough, flexible and impact-resistant
Particularly suitable for: Lightweight functional parts, drones, RC components, protective structures, enclosures and components exposed to bending, vibration or impact.