Development of High Throw Power E-coat 2005-01-0619

Electrodeposited coating (E-coating) is utilized as a primer in painting automobiles, and plays an important role in ensuring smoothness and rust prevention. When it is applied to automobile bodies, the paint film is deposited from the outer panel area to the inner panel area, as well as to the box section. However, when the film thickness applied to the bag structure area is sufficient to prevent rusting, a superfluous amount of paint film is deposited on the outer panel area, which results in being more costly. To solve this issue, we have achieved a higher throw power by suppressing the film deposit thickness on the outer panel, and utilizing deposit-control technology on the inner panel. Furthermore, we have succeeded in developing E-coating technology that greatly reduces the amount of coating used compared to conventional methods. Finally, it is possible to apply this newly developed coating technology without having to convert almost any of the equipment currently in use. It is likely that this coating will replace conventional coating in the near future.