Paper processing after the packaging process production

At a certain temperature, the backing paper and the backing paper (white paper, corrugated cardboard) are pasted together with a binder. This is the backing process.
Since the surface of the gold and silver (paper) paper is coated with an aluminized film and aluminum is an amphoteric metal, at a certain temperature, a chemical reaction occurs between the acid and the base, so that gold or silver is originally refracted. Glossy detached aluminum particles gradually become a compound, loses the lustrous luster and causes discoloration of printed products, so the backing adhesive must be neutral, and the compounding temperature should not be too high.
The paper and backing must be stored under the same temperature and humidity. Generally, the temperature is controlled between 18°C ​​and 25°C, the relative temperature is controlled between 55% and 65%, the water content of the paper is stable within a certain range, and the paper deformation is controlled. At a minimum, the processing environment at the printing site and the post process is stabilized so that the backing process can be smoothly performed. Otherwise, the amount of paper deformation will be different, and the back will not be even, discounted, blistering, or opening, affecting the quality of the printed product, or even causing scrap.
In order to emphasize the contents of the high-end box, to make the product more eye-catching, and strongly highlight the three-dimensional sense of the product, so that the product has a visual effect of flying gifts, manufacturers often require pressure convex technology, the name of the product on the box convex Finally, after die-cutting, the finished product can be packaged after gluing. When packing, it is best to separate every ten papers so as to avoid damage to the matte surface during transportation and affect the appearance.
Because imitation metal etching has a strong three-dimensional sense of metal, bright colors, rich layers, high quality, good gloss and other characteristics, it is now ideal for quality packaging.