Ice bag is a new type of freezing medium, which has no water pollution during thawing and can be used repeatedly in cold and hot conditions. Its effective cooling capacity is six times that of the same volume of ice, and it can replace dry ice and ice cubes. Its types are simple and clear, and it can be divided into reusable ice packs and disposable ice packs.
Self-made ice pack method:
Materials: 1, medium and large fresh-keeping bags or special bags for food shopping, bought in supermarkets, two at a time. 2. refrigerator. 3. Disposable plastic or paper cups 8- 10. 4. Tap water.
Steps for making ice packs: 1. Make ice cubes and use the freezer to make them. If there is no freezer, fill a small cup of 8- 10 with half tap water, put it in the freezer and freeze it into ice cubes. After a little dissolution, pour the ice out of the cup. 2. Put the ice cubes into the fresh-keeping bag and tap the water. Generally, 1 part ice and 2 parts water are used, and the mixed ice water accounts for a small part of the ice bag capacity. 3. The seal is tight. First, drain the air in the fresh-keeping bag and tie it tightly near the mouth of the bag. Don't tie it close to the water surface, and don't half bag air and half bag water.