jääpakkaat

Jääpakkaat, often translated as ice packs or cold packs, are devices used to keep food and beverages cold. They typically consist of a durable plastic container filled with a gel or liquid that freezes at a lower temperature than water. This allows them to remain cold for extended periods when placed in a freezer. Jääpakkaat are commonly used in insulated coolers, lunch bags, and picnic baskets to maintain a low temperature and prevent spoilage of perishable items. They are also utilized in medical applications for reducing swelling and pain, and in shipping perishable goods.

The effectiveness of a jääpakka depends on the type of filling, the size of the pack, and the insulation of the container it is placed in. Gel-filled packs are popular because the gel remains pliable even when frozen, allowing the pack to conform to the shape of the items it is cooling. Liquid-filled packs may become rigid when frozen. When using a jääpakka, it is important to ensure it is fully frozen before placing it in a cooler. Over time, the ice pack will absorb heat from its surroundings and gradually warm up. Once thawed, it can be refrozen and reused multiple times.