Calbee to sell potato chips in monochrome packaging due to naphtha shortage

TOKYO - Japan's leading potato chip maker Calbee Inc. will start selling some of its potato chip products in black-and-white packaging due to a tighter supply of oil-derived naphtha stemming from the Middle East conflict, sources familiar with the matter said Monday.

Naphtha is commonly used as a printing ink solvent. The company has already notified retailers of the change, other sources in the retail industry said.