CARBON FIBER
OXIDATION OVENS

Litzler cross-flow oxidation ovens produce high-quality carbon fiber due to precise airflow and temperature uniformity.
The cross-flow design is successfully producing 1k tow up to 350k tow in plants around the world. Litzler ovens are in operation in the United States, China, Taiwan and Western Europe.

The Litzler cross-flow design is available in pilot scale machines less than 1 meter wide as well as production systems up to 4 meters wide. Cross-flow uniformity is maintained with velocities between the fiber bands from 1.5 mps up to 3.0 mps on wide machines.

The cross-flow ovens feature the patented End-Seal System to seal the ends of the oven.

The End-Seal minimizes cold air infiltration and the bottom of the oven and hot air from escaping at the top of the oven. A patented venturi airbar is located above and below each fiber band. Each airbar is individually controlled using dampers. Our design uses hot air from the process to keep the tow at temperature and avoid tar build-up.

The End-Seals
• Improve temperature uniformity
• Minimize escape of toxic gases
• Reduce oven exhaust
• Reduce fuel consumption
• Can be retrofitted to existing ovens

3D Design
All Litzler oxidation ovens are designed using our state-of-the-art 3D design software. The 3D software allows for faster designs and more efficient manufacturing techniques.

CFD Analysis (Computational Fluid Dynamics)
Litzler utilizes Fluent® CFD software to model our airflow and temperature uniformity prior to manufacturing. This cutting edge technology allows us to maximize our designs before we ship an oven.

Example of the uniformity attained with our cross-flow design. Click picture to enlarge.

Roll Stands
Litzler roll stands include unique features developed for processing carbon fiber.

Rugged tubular steel frames are designed for minimal deflection and good operator access. Individual adjusting mechanisms provide precise bearing and roll alignment for accurate product tracking.

Most rolls are hard chrome-plated with a matte finish to minimize fiber removal and roll wrap. Rolls are computer designed for optimal diameter to provide minimum deflection. Journals and bearings are oversized to prolong operational life.

Custom removable brushes can be supplied to remove fly build-up from the rollers. The brushes are easily replaceable and spring loaded to assure consistent pressure against the rollers.