(1) The structural film material has the same structure as the paper material, the only difference being that the surface of the material needs to be treated.
(2) Surface characteristics and treatment methods The principle of the ink layer forming a pattern on the printed matter is penetration, volatilization, conjunctiva, and solidification. Due to the high density of the film, the ink only has volatilization, conjunctiva, and no penetration during the curing process, so the surface of the film needs special treatment. The effect of the surface treatment is to increase the surface tension of the film to be greater than the surface tension of the ink to achieve the correct combination of ink and film material.
Surface treatment usually has the following methods:
1 Corona treatment: discharge treatment on the surface of the film by high-voltage electric charge, and Zui finally achieves the purpose of increasing surface energy, that is, surface tension. Corona treatment is generally carried out at the film manufacturing facility. Since the surface tension is time-limited, it is required to be strictly tested before printing. Therefore, some advanced equipment has a pre-press corona treatment device for printing high quality film products.
2 Printing treatment: chemically change the surface characteristics of the film to make it suitable for ink printing or ribbon printing.
3 Surface coating: Coating with chemical substances on the surface of the film to increase surface tension and change surface characteristics.
(2) Surface characteristics and treatment methods The principle of the ink layer forming a pattern on the printed matter is penetration, volatilization, conjunctiva, and solidification. Due to the high density of the film, the ink only has volatilization, conjunctiva, and no penetration during the curing process, so the surface of the film needs special treatment. The effect of the surface treatment is to increase the surface tension of the film to be greater than the surface tension of the ink to achieve the correct combination of ink and film material.
Surface treatment usually has the following methods:
1 Corona treatment: discharge treatment on the surface of the film by high-voltage electric charge, and Zui finally achieves the purpose of increasing surface energy, that is, surface tension. Corona treatment is generally carried out at the film manufacturing facility. Since the surface tension is time-limited, it is required to be strictly tested before printing. Therefore, some advanced equipment has a pre-press corona treatment device for printing high quality film products.
2 Printing treatment: chemically change the surface characteristics of the film to make it suitable for ink printing or ribbon printing.
3 Surface coating: Coating with chemical substances on the surface of the film to increase surface tension and change surface characteristics.
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