Concept: Bone glue is one of the most widely used animal adhesive materials. Its characteristics are: good bonding performance, high strength, low moisture, fast drying, good bonding and shaping, and low price, easy to use, especially suitable for bonding and pasting hardcover book shell, can get good results.
gelatin
Concept: Gelatin is a kind of biological macromolecule, so it has some properties of macromolecules. When the dried gelatin is placed in a proper amount of water, first of all, the outer layer of the gelatin is slowly swelled. As the time passes, it expands. The phenomenon of great progress gradually developed toward the inner layer. This phenomenon is called "swelling" and popularly known as "swelling." The expanded gelatin warms above 35°C and forms a homogeneous solution with water. In short, commercial rubber is first soaked and swelled in cold water for 60 minutes and then melted in a water bath below 80°C (excessive temperature will destroy the viscosity).
Jelly glue
Concept: Jelly gel, also known as jelly glue, is popular with women and children because of its appearance, crystal color, bright color, soft and smooth taste, sweet and moist. Jelly is not only lovely in appearance, but also a healthy food with low calorie and high dietary fiber.
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