Kraft paper is a kind of paper made from cowhide or other animal leather after processing. It usually has high thickness and toughness and can be used as packaging material. Kraft paper is often used in painting, cover making, handicrafts and other fields, and can also be used as capacitor dielectric paper, printing materials and other applications. Compared with ordinary paper, kraft paper is more durable and tough, but it also needs to be protected from moisture and insects.
When making moisture-proof paper, some substances with moisture absorption performance, such as calcium oxide, white carbon black and natural clay, are usually added to absorb the moisture in the surrounding environment. At the same time, the paper surface is coated with wax and other materials to form a moisture-proof layer to protect the paper from moisture damage.
In a word, moisture-proof paper is a kind of paper specially used for moisture-proof, and kraft paper is a kind of paper with high toughness, which needs protective measures against moisture and insects.