The ¥30 and ¥9 Hikes Were Separate
When material prices move within 10–24 days, what can a fixed-price packaging company charge separately?
Prime Polymer raised prices by at least ¥30/kg to reflect higher naphtha costs, then separately added at least ¥9/kg. Even when crude oil reached $110.48, resin, ink, film and delivery costs did not move at the same speed.
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Translated from Japanese by AI. The Japanese original is authoritative.

Prime Polymer split its price increase in two. One part was at least ¥30/kg, based on an assumed price for Japan’s domestic naphtha. The other was at least ¥9/kg for utilities, secondary raw materials, auxiliary supplies and supply stability costs.…
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Sources
- MarketScreener / 2026-10-20
- プライムポリマー / 2026-03-17
- プライムポリマー / 2026-04-21
- プライムポリマー / 2026-04-21
- DICグラフィックス / 2026-04-03
- 東洋紡 / 2026-05-28
- エフピコ / 2026-04-30
- artience / 2026-05-21
- 帝国データバンク
- 首相官邸 / 2026-05-25
- DICグラフィックス / 2022-07-07
- Yahoo!ファイナンス(エフピコ決算説明会) / 2026-04-30
- ITmedia ビジネスオンライン / 2026-05-13
- FNNプライムオンライン / 2026-06-06
- FNNプライムオンライン / 2026-05-22
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