Translation guide
A cold pack is a flexible pack that stays cold, used for cooling injuries or keeping items cold. In Japanese, the term depends on the context: medical/ice packs, reusable gel packs, or instant cold packs.
A pack filled with ice or gel used to reduce swelling or pain.
Traditional ice bag, often made of rubber, filled with ice cubes. Common in medical contexts.
捻挫したので、氷嚢で冷やしています。
I sprained my ankle, so I'm cooling it with an ice pack.
Reusable gel pack that stays cold; often used in lunch boxes or for injuries. Very common in daily life.
保冷剤をタオルで包んで患部に当ててください。
Wrap the cold pack in a towel and apply it to the affected area.
General term for cooling pack, often used for instant cold packs or gel packs.
冷却パックを冷凍庫に入れてください。
Please put the cold pack in the freezer.
Loanword from English, used for ice packs, but less common than native terms.
アイスパックで頭を冷やした。
I cooled my head with an ice pack.
A single-use pack that becomes cold when squeezed or shaken, used for first aid.
Specifically refers to instant cold packs that activate by squeezing. Common in first aid kits.
瞬間冷却パックを揉むと冷たくなります。
When you squeeze the instant cold pack, it becomes cold.
Disposable cooling pack, emphasizing single-use nature.
使い捨て冷却パックは非常時に便利です。
Disposable cold packs are convenient in emergencies.
A reusable pack used in coolers or lunch bags to keep food/drinks cold.
The most common term for gel packs used in lunch boxes and coolers. Same word as medical use.
お弁当に保冷剤を入れました。
I put a cold pack in the lunch box.
Sometimes used for larger cold packs for coolers, but less common.
クーラーボックスにアイスバッグを詰めた。
I packed ice bags in the cooler.
氷嚢 is a traditional rubber ice bag filled with ice cubes, often used in hospitals or at home for injuries. 保冷剤 is a gel pack that can be frozen and reused, commonly found in lunch boxes or for cooling injuries. 冷却パック is a broader term that can include instant cold packs or gel packs. For first aid, 氷嚢 or 保冷剤 are most natural; for lunch boxes, 保冷剤 is standard.
氷嚢に氷を入れてください。
Please put ice in the ice bag.
保冷剤は凍らせて使います。
You freeze the cold pack before use.