A small pen and ink on the pen have a bumpy print texture, which not only avoids the problem of pen ink printing ink falling off, but also makes it more environmentally friendly. The core of this improved technology is "silicone plastic products screen printing process." Recently, Beifa Group Co., Ltd. adopting this technology has also won a silver medal in the 19th National Invention Exhibition.
"Many customers report that after using a special pen to write for a period of time, the pen printing ink will adhere to the hand." Xu Jundao, manager of pen manufacturing technology center of Beifa Group, told reporters, "The reason is that the special pen's PP pen and ink are It is easy to fall off due to sticky adhesion.†To solve this problem, and in order to enter the international mainstream pen market and improve product quality, Beifa Group has been researching this technology since 2006 and successfully developed in 2008.
On Xu Jundao’s desk, there are various kinds of special pens that use this technique. From the appearance point of view, these pens are slightly thicker than those of ordinary gel pen pens, and the finger touch pattern has a more pronounced concave-convex feel than ordinary gel pens. It was this small change that made Beifa Company enjoy the “sweetnessâ€. In 2008, new product research and development was successfully introduced to the market and was deeply loved by consumers. Orders continued one after another.
According to Xu Jundao, this technology mainly improves the pen printing ink process. The surface of the barrel was first treated to increase the original tension from 29 N/m to 49 N/m. Then use UV curing technology, and then rely on the positioning of the photoelectric system, a five-color composite printing, so that the pattern is clear, plump, good texture.
In order to achieve these effects, the key is to solve several problems: First, the color registration accuracy and distortion problems. The accuracy of color registration requires an error of less than 0.2 mm, and pattern distortion is more likely to occur on the surface of a profiled pen. Xu Jundao told reporters that in order to ensure the accuracy of registration, they tackled day and night, using high-precision electronic induction positioning system, according to the rotating disc intermittent printing principle, so that pen products UV color printing a molding, improve the color accuracy of printed materials, but also Solved the problem of automated printing that is difficult to achieve with solvent-based inks, improved production efficiency, and achieved five-color printing efficiency of 1.5 seconds per stick; the use of a unique shaped film production method also enabled the printed pattern to achieve small distortion and high fullness. Strong three-dimensional effect.
The most important thing is to solve the problem of easy peeling of the pen printing ink. Xu Jundao said: "At that time, we reviewed the relevant domestic and foreign data, combined with the current UV printing process, and ultimately used the acrylic pen UV automatic printing." Pen Engineering Center after repeated trials, so that the UV light curing overcome the ink on the print The problem of denaturation is easy to occur, and it also solves the problem that the ink is difficult to dry after being transferred to the surface of the barrel. At the same time, the thickness of the UV film layer is effectively ensured by adopting the type of control dot, tension level, thickness of the photosensitive resist, and screen printing.
It is reported that since solvent-based inks can be volatilized like alcohol, they will emit exhaust gas. Now that the process is improved, full-automatic light irradiation does not generate exhaust gas, which is also conducive to environmental protection. At present, Beifa is also working with other research institutes to use lead-free materials as an alternative to the pen cleaning technology to further improve the environmental technology of pen technology.
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