English 
Many office white-collar workers or people living at home will prepare a hot water bag for heating in winter.
There are many kinds of hot water bags on the market at present, water-injection type hot water bags are also very popular, then water-injection type hot water bag which material is good, below we come to understand.
At present, the main materials of water-injection hot water bags are as follows:
1. PVC, the PVC material of the water-injection hot water bag is good in heat resistance and aging resistance, the material itself does not have any peculiar smell, but the texture is relatively hard, it is to be covered with a cloth cover to avoid scalding.
2. Rubber, rubber material hot water bag aging performance is relatively poor, and there will be a smell of rubber, but the texture is softer, and more elastic, holding it in the hand will feel better.
3. Flannelette material, Flannelette is a better quality of fabric, and feels more comfortable, The water injection site and the bag body bonding firm degree are better, and not hot after heating.
4. Mercerized fabric material, mercerized fabric material is similar to Flannelette material, but also feels softer, higher firmness, after heating hot degree is more moderate.
In short, different materials have their advantages and disadvantages, which material is better is relative, mainly according to their own needs to choose, because the hot water bag can not be cleaned, so it is to choose waterproof, wear-resistant, dirty-resistant material, suitable for their own on it.
