In addition to the characteristics of colorless, odorless, strong gloss, fast drying, and chemical resistance, the ideal glazing oil must also have the following properties:

1. High transparency and no color change

To obtain excellent glazing effect for decorative prints, it depends on the formation of a colorless and transparent film on the surface of the printed sheet, and the graphics and text will not change color after drying. Moreover, it cannot be discolored or yellowed due to sun exposure or long use time.

2. The film layer has certain wear resistance

Some glazed prints require certain abrasion resistance and scratch resistance after glazing. Because the production process of high-speed box making machine, cardboard box packaging machine device, protective cover on books and other lines is used, the surface of the printed matter is subject to friction, so it must be wear-resistant.

3. Has a certain degree of flexibility

The bright film formed by any varnish on the surface of the printed matter must maintain good elasticity in order to be compatible with the flexibility of the paper or cardboard, so as not to be damaged, cracked or peeled off.

4. The membrane layer has better environmental resistance

Some of the printed products after glazing are used to make various packaging cartons. In order to play a good role in protecting the packaged products, the glazing film layer must have good environmental resistance. For example, the packaging of food, cigarettes, cosmetics, clothing and other commodities must have moisture and mildew resistance. In addition, the chemical properties of the dried film should be stable. Do not change performance due to contact with chemical substances such as weak acids or alkalis in the environment.

5. It has a certain adhesion to the surface of the printed matter

Due to the influence of the integrated density value of the graphic ink layer on the surface of the printed matter, the surface stickiness is greatly reduced. In order to prevent the film layer from drying out and cracking in use after drying, the film layer is required to have strong adhesion and various types of Accessories have a certain degree of adhesion.

6. Good leveling and smooth film surface

There are many kinds of printing materials, and the influence of printed graphics and texts, the surface absorption, smoothness, wettability and other differences are very different. In order to make smooth coatings on different product surfaces can form a smooth film, varnish is required Good leveling, smooth film surface after film formation.

7. Wide adaptability for post-press processing

After the printed product is polished, it generally needs to undergo post-process processing, such as molding processing, hot stamping anodized aluminum processing, etc. therefore. It is required that the glaze film layer has a wide adaptability after printing. For example: better heat resistance, after hot stamping of anodized aluminum, there can be no sticking phenomenon; high solvent resistance, after drying, the film layer cannot be blistered, wrinkled and hairy due to the influence of the adhesive in the post-processing Sticky phenomenon.

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