Sumitomo Chemical Develops LCP Filament for High-Temperature 3D Printing

Sumitomo Chemical and Japanese industrial 3D printer maker Gutenberg have jointly developed a liquid crystal polymer filament for fused filament fabrication. The material opens the door to high-temperature, high-strength 3D printed parts that were previously impossible to make on standard desktop machines.

LCP is a super engineering plastic. It combines heat resistance, high strength, low dielectric constant, and excellent dimensional stability. Those properties make it valuable for semiconductor housings, robotics components, and next-generation mobility parts. The problem has always been filament formation: LCP is difficult to extrude into a consistent spool, and printing it reliably required specialized equipment.

What changed

Sumitomo Chemical created a new material design and filament formation process specifically for additive manufacturing. The company then worked with Gutenberg to refine the printing parameters and control the molecular orientation of the material during deposition.

The result is a filament that prints reliably on FFF systems and produces parts with thermal conductivity and strength comparable to aluminum alloys, while staying lightweight. That combination is hard to achieve with standard PLA, PETG, or even carbon-fiber composites.

Target applications

Sumitomo Chemical is pushing the material toward semiconductor peripheral components, humanoid robot parts, communications hardware, and eVTOL structures. The company plans to start sample distribution in 2026 and is already looking at space and defense uses further down the line.

Why it matters

Most high-performance 3D printing materials today are either nylon-based composites or expensive photopolymer resins. An LCP filament that works on standard FFF printers would let engineers produce functional, heat-resistant parts without moving to industrial sintering or machining. If the samples perform as described, this could become a reference material for functional prototyping in demanding environments.