Calbee's Potato Chips are instantly recognisable for their multi-hued designs but printing ink requires naphtha, an oil derivative for which Japan relies on imports from the Middle East for about 40 per cent of its consumption.

Calbee's Potato Chips are instantly recognisable for their multi-hued designs but printing ink requires naphtha, an oil derivative for which Japan relies on imports from the Middle East for about 40 per cent of its consumption.

The effective closure of the Strait of Hormuz has severely disrupted global supplies of energy and petrochemicals.

The effective closure of the Strait of Hormuz has severely disrupted global supplies of energy and petrochemicals.

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…