Factors affecting the quality of corrugated paper hot stamping process

Compared with the hot-stamping process, the tipping paper hot-stamping process is more difficult in some aspects. The tipping paper is a reel type material, and most of them adopt a round press hot stamping method, which has an overall hot stamping and a single hot stamping. Hot stamping equipment is mainly made in domestic equipment, such as Zhejiang Haining Tengda, Ruian powerful, Xi'an black cattle equipment, but also imported equipment, typical of France Shangbang. The heating method uses electricity or oil heating. The hot plate cylinder is a full version and cannot be made like a cigarette pack. The base material is copper and steel (copper material has good thermal conductivity and steel has high resistance to printing).

Due to the low quantification of tipping paper products, it is generally around 40g/m2. Therefore, the temperature and humidity of the workshop are required to be higher. It is better to maintain the constant temperature and humidity, and the hardness and material of the impression cylinder are also high. Claim. In the corrugated paper hot stamping process, the factors that affect the product quality mainly include the following aspects.

1. Effect of Electro-Aluminum In the hot stamping process of corrugated paper products, the quality of electro-aluminum is closely related to the quality of hot stamping. If the tightness of the anodized aluminum is improper (too loose and too tight) will cause hot stamping is not true; Improper temperature of the hot melt adhesive will cause a hot stamp paste; production time of the electrochemical aluminum is too long or too short, the tension is too large or Too small, inaccurate hue, or instability can directly affect product quality.

2. The Impact of the Hot Steel Material The impact of the hot steel material on the hot stamping quality of the water pine paper product is mainly reflected in the ink layer on the surface of the hot iron material. If the ink is used as an ink, the white ink in the lighter agent is added in excess, and the electro-aluminum will be pulled back, causing the hot stamping to be false. In addition, the temperature resistance and thickness of the ink layer will also affect the quality of the stamping product, especially when printing with pearlescent ink.

3. The impact of hot stamping speed Hot stamping speed is too slow, hot stamping patterns are mostly not clear (except for special requirements of the product), with the increase of speed, the performance of aluminum and hot stamping temperature, hot stamping pressure to achieve the best state, products The pattern and text on the line become clear. The vast majority of tassel paper hot stamping speeds are appropriate at about 40 m/min, and should be adjusted depending on the complexity of the pattern, the size of the text, and the thickness of the lines.

4. The effect of hot stamping temperature The hot stamping temperature plays a key role in the quality of the product. Hot stamping temperature is too high, which can easily cause the pattern to bloom: the temperature is too low and it is easy to cause hot stamping. The use of oil or electric heating method, the choice of copper or steel as the substrate of the hot stamping plate in the temperature control is also very different, usually equipped with a temperature detector, is mainly used to detect the actual temperature of the hot plate surface.

5. The effect of hot stamping pressure Hot stamping pressure mainly refers to the pressure of the rubber roller on the hot stamping plate. It also plays a very important role in the hot stamping of the tipping paper. If the pressure is too small, the hot stamping will not be caused, and the paste will be generated after the convention, and the service life of the tipping and hot stamping version of the tipping paper product may be shortened. When setting the pressure, it should be gradually increased from small to large.

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