THE WORLD’S LEADING
CARBON FIBER OXIDATION TECHNOLOGY

REINVENTING OXIDATION TECHNOLOGY FOR NEXT GENERATION PERFORMANCE

Despatch oxidation ovens have been the top choice of carbon fiber manufacturer’s for more than 30 years. We recently took our oxidation oven through a reinvention process where we addressed opportunities for improvement in the current technology and design. We are implementing and testing these new, enhanced features that will essentially reinvent oxidation technology and performance for the next generation of operation.

The next generation in Despatch oxidation technology includes: improved airflow uniformity and mapping, air-tight sealed process chambers, hybrid heating and lower temperature variance. Improving the integrity of the process chamber creates better temperature uniformity and airflow balance. Uniformity and balance in the chamber leads to lower temperature variances and a more uniform oxidation process. Improving the stability of the air in the oxidation oven allows for more flexibility in oven operation, increased fiber throughput and reduced operating costs.

The addition of hybrid heating technology allows operators to instantly switch between a gas and electric heat source. All of the oxidation oven’s new technology enhancements focus on improving airflow, saving energy, and allowing customers to produce the highest quality fiber at the lowest operating cost.


Despatch uses a new airflow mapping metrology tool to confirm airflow uniformity and balance.
Enhanced process atmosphere control reduces energy cost and improves fiber quality
Optional auto-adjust end-louvers open for easy threading and close for reduced heat loss.

 


CENTER-TO-ENDS AIRFLOW

Despatch invented Center-to-ends airflow over 40 years ago. It has since become the industry standard because it provides optimal temperature uniformity resulting in consistently oxidized density across the entire tow band. A uniform airflow over the tows allows the process to be operated closer to the “exotherm”, increasing the chemical reaction rate. Consistency of process results in no skinning (uncured core) and more uniform densification across the entire tow band. Center-to-ends airflow provides for up to 30% faster rates of oxidation than conventional cross flow or vertical down flow oven designs.

  • Air moves parallel to the fibers
  • With conventional airflow technologies the non-uniform end areas are substantial. By using the Despatch center to ends airflow technology we are able to greatly reduce the non-uniform end areas. This extends the active heated length by up to 25%.
  • The oven operates at consistently higher temperatures without reaching uncontrolled exotherm.
  • Consistent process conditions with uniform temperatures in the working zones ensures higher yields of as much as 30% and uniform oxidized density fiber
  • Center-to-ends airflow increases line speeds and fiber throughput, without sacrificing fiber quality.
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