In order to keep the temperature longer, vermiculite, a mineral material, is used to keep warm. Because it can't react before use, the material of the bag should be very special, consisting of raw material layer, gelatin layer and non-woven bag. Non-woven bag adopts microporous breathable film, and there are also conventional airtight outer bags.
Extended data:
Warm baby was first invented by the Japanese and rose in Japan. It is the latest generation of high-tech products in Japan. The product is as thin as paper, as light as cotton, soft and elastic.
With the improvement of people's living standards, disposable heating products are also widely used in people's lives. Due to different names, it can be divided into: warm paste, fever paste, fever piece, warm handbag, hand warmer, and one hot paste.
Foot-warming stickers, Shu Jing stickers, Palace-warming stickers, Woman-warming stickers, portable stickers, etc.
Warm baby can relieve the pain of waist, shoulders, stomach, legs and joints, and has a good anti-freezing and cold-dispelling effect when going out in cold winter. Easy to carry, lasting and stable fever. Sticking a thin piece every day can resist the cold of the day.
Baidu encyclopedia-warm baby