Factors affecting the hot stamping process of cork paper

In recent years, the introduction of high-grade cigarettes has made the application of hot stamp printing increasingly widespread and has been on the rise, such as the blue hard and soft Bao Furong products of Changde Cigarette Factory in Hunan, and the Red Dragon and Yellow Crane of Wuhan Cigarette Factory. Building series products, "black and" series products of Changsha Cigarette Factory.

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 stamping plate cylinder is an integral plate, which cannot be used as a local plate like cigarette packs. The base material is copper and steel (the thermal conductivity of copper is good, and the resistance of steel is high).

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 anodized aluminum

In the hot stamping process of corrugated paper products, the quality of anodized 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 the hot stamping is not true; Improper temperature of the hot melt adhesive will cause a hot stamp paste; production time of the anodized aluminum is too long or too short, the tension is too large or Too small, inaccurate hue, or instability can directly affect product quality. Taizhou, Zhejiang, Wenzhou Yushi, Guangdong Sihui Sun and other companies produced the corrugated paper hot stamping aluminum quality is relatively stable. To some extent, grasping the quality of anodized aluminum is equivalent to controlling half of the product quality.

2. Influence of the hot materials

The impact of the hot-ironed materials on the hot stamping quality of the water pine paper products is mainly reflected in the ink layer on the surface of the hot-lining material. If the white ink used as the diluting agent in the ink is added in excess, the electric 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. Effect of hot stamping speed

The hot stamping speed is too slow, and the hot stamping pattern is not clear (except for products with special requirements). With the increase of speed, the performance of the aluminum foil and the hot stamping temperature, the hot stamping pressure reach the best state, and the pattern and text on the product The lines 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. Effect of hot stamping temperature

The level of hot stamping temperature plays a key role in product quality. Hot stamping temperature is too high, which can easily cause pattern blooming. If the temperature is too low, hot stamping is not easy. 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. Influence of hot stamping pressure

Hot stamping pressure mainly refers to the pressure of the rubber pressure roller on the hot stamping plate. It also plays a very important role in the hot stamping of 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.
With the development of hot stamping technology, it is believed that the cold stamping and hot stamping techniques used on cigarette packs will also be applied to tipping paper. For the corrugated paper hot stamping manufacturing enterprises, they should keep abreast of the development of cigarette packs and reposition them so as to remain invincible in the future competition.