[ Problem Point ]

We could not roast uniformly at the optimum temperature up to now.

[ ⇒Kaizen Point ]

We roasted with Air blow Heaters.
From light roasting 140℃ to dark roasting 170℃, can be easily done in 1℃ increments.
Moreover, since it was automatically stirred with hot air and it was uniformly heated from the all surface,
The variation in roasting was reduced and the product value increased.

Furthermore, since there is a controller which can automatically control roasting time and hot air flow rate, it was easy to prototype.