noun
refilling; repackaging; rebottling
The act of transferring contents from one container to another, often for reuse or storage. Commonly used for refill packs of soap, shampoo, or food items.
詰め替え用の洗剤を買った。
I bought a refill pack of detergent.
このボトルは詰め替えが簡単だ。
This bottle is easy to refill.
Compound of 詰める (tsumeru, 'to pack') + 替える (kaeru, 'to replace').