RF Polyester welder Manufacturing.What are the production standards for leather embossing machines?

　　1. When tearing open the packaging, the interface of damage occurs in the oil layer, manifested as the peeled plastic film without ink, indicating that the surface coating of the paper is tightly sealed and oil is difficult to penetrate into the paper layer.

　　2. When tearing open the packaging, the interface damage occurs in the ink layer, manifested as the peeled plastic film with ink, but the peeled paper fur is less, indicating that the strength of the paper coating is lower than that of the paper layer. This may be due to insufficient coating latex dosage, poor adhesion between the primer and topcoat, and adhesive migration causing uneven coating strength.

　　3. When tearing open the packaging, the damage interface occurs on the surface of the cardboard coating, indicating that the coating strength on the paper surface is low and the coating is tightly sealed, making it difficult for oil to penetrate into the paper layer.

　　4. When tearing open the packaging, the damage interface occurs at 1/2 or 1/3 of the thickness of the cardboard sheet, indicating that the leather embossing machine has a good effect.

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