Talking about the Technical Characteristics and Requirements of Cold Stamping Printing

Cold stamping technology has become a strong competitor of hot stamping technology, and cold stamping technology is expanding from the narrow flexographic printing field to other printing processes, such as wide flexographic printing. Embossing, web offset, and sheetfed offset.

Cold stamping technology has provided new opportunities for printing companies. Its greatest advantage is less investment, or even no investment at all. Another outstanding advantage is the high cost performance, which is also the biggest selling point of cold stamping technology. As some industry insiders have said: “For customers, the cost-effectiveness of cold stamping technology is high, which can help customers increase the added value of the products, and it is very cost-effective.” In addition, since cold stamping technology does not require the production of expensive hot stamping, It is very suitable for short-lived, low-quality labeling and proofing production. However, compared with the hot stamping technology, the cold stamping technology still has certain defects in quality and needs to be further improved. Therefore, the cold stamping technology is not suitable for the processing of high quality packaging and label products. Although gold and silver ink printing can also achieve metallic gloss decorative effects similar to those of hot stamping, and gold and silver ink printing technologies have made great progress in recent years, they still cannot achieve hot stamping or cold stamping technology. The kind of intense visual impact it brings.

In general, cold stamping can usually be applied to a job printed on a UV flexographic printing press. The equipment and materials required for the cold stamping process are as follows.

(1) Standard flexographic printing or embossing unit.

(2) Photopolymer plates and anilox rollers, and there must be enough spare anilox rollers to choose from.

(3) The embossing roller with a hardness of HS90 must be able to be easily installed in the printing unit and ensure that sufficient pressure is provided to ensure that the hot stamping is carried out.

(4) Hot stamping foil unwinding device and winding device. Care should be taken to adjust the winding tension when cleaning waste to avoid wrinkling or delamination of the stamping material.

(5) Hot stamping foil.

(6) UV adhesives.

(7) UV curing system. The UV curing system must be as close as possible to the imprinting device in order to cure the UV adhesive in time after printing and stamping. It is required that the power of the UV curing system should be at least 300 W. The UV lamp and the reflector must be kept clean and free of UV varnish and dust impurities so as not to affect the curing effect of the UV adhesive.

(8) Peeling device. The peeling device is installed at the back end of the UV curing system. In addition to peeling the waste foil, the device can also prevent the delamination phenomenon of the hot stamping foil before the UV curing, and can also reduce the wrinkle, skew and other defects of the printing material.

In addition, in order to obtain high-quality hot stamping products and high profit margins, skilled operators are also required to be able to handle and solve various problems occurring in the production process, especially those related to UV systems.

In the actual production, the use of hot stamping technology can achieve the best hot stamping quality and hot stamping effect, but the cost is higher. Although the quality of cold stamping is not bad, it is inferior to hot stamping, but at a lower cost. No matter which kind of hot stamping technology you use, you should pay attention to these two types of hot stamping technology, because the price of hot stamping is constantly lowered, and the quality of cold stamping is also increasing, both stamping technologies are constantly in Progress and development.

When a printing company decides whether to invest in cold stamping technology, it must understand the actual conditions of the company and understand the situation of the company's printing presses, because the cold stamping process means that a printing unit is to be replaced by a cold stamping unit, and a peeling device needs to be installed. If the printer does not have enough color groups, it may affect the normal printing of the job. In addition, it is also necessary to determine whether the job is suitable for the cold stamping process. Carefully study the graphic and determine whether it can achieve the desired effect after cold stamping. Printing companies can work with UV adhesive suppliers to test cold stampings to provide customers with more choices and improve their ability to serve customers. On the basis of existing customers, it can also enhance the company's own competitiveness and create the potential for consumer demand for its products.

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