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.

Industrial gelatin is a kind of light yellow or brown crumb, without unpleasant odor and without impurities visible to the naked eye. Its molecular weight is 1-10 million, contains 18 kinds of amino acids, moisture and inorganic salt content is below 16%, and protein content is above 82%, which is an ideal protein source.

In April 2012, the Internet rumors of old yogurt and jelly in the broken leather shoes made of industrial gelatin, even in the medical capsules are also industrial gelatin, there are a number of enterprises were punished.

One is used in the match manufacturing industry, mainly using the blistering nature of the gelatin to form pores, combined with oxidizers, fire starters and fillers, so that it ignites instantly. Secondly, it is used as a bonding agent, using its high strength, elasticity and toughness to produce sand cloth, sand paper, bonding woodwork, bookbinding and for use in gift box assembly line, high-class musical instruments and furniture industry. Thirdly, it is used in electrolysis, adding it to electrolyte to help generate smooth and dense anodic precipitation and eliminate production loss. Fourthly, it is used in textiles, where a film can be formed on the yarn bundle as a way to increase the toughness, strength, smoothness and elasticity of the fiber and prevent breakage. Fifth, it is used with dichromate to manufacture negative type photoresist film. Sixth, it is extracted from hydrolyzed protein and used in additives.

In short, industrial gelatin is used in various products in the industries of sheet, furniture, match, feed, packaging, paper, textile, silk, printing and dyeing, printing, ceramics, petroleum, daily chemical, coating, metallurgy, etc., and mainly plays the role of thickening, stabilizing, cohesion, blending, varnishing, sizing, bonding, water fixing, etc.