Industrial gelatin is a protein hydrolyzed from the collagen portion of connective or epidermal tissues of animals. It has many excellent physical and chemical properties, such as reversible gel formation, adhesion, surface activity, etc. It is used in the food industry as jelly, emulsifier, stabilizer, binder and clarifier, etc. Industrial gelatin, a fine chemical, is a kind of gelatin product classified according to the different uses of gelatin. In daily life, people divide gelatin into edible gelatin, pharmaceutical gelatin, photographic gelatin and industrial gelatin. For industrial gelatin, it is divided into skin gelatin, bone gelatin, hot-soluble gelatin powder, protein gelatin, feed gelatin, and match gelatin. And so on.

Bone glue is a widely used animal-based adhesive material. Because of its bead-like appearance, it is also called bead-like bone glue. Its characteristics are: good adhesion performance, high strength, less moisture, fast drying, good adhesion set, and low price, easy to use, especially suitable for bonding and gluing book cover shell, can get good results.