Preparation of propylbenzene emulsion dry film adhesive

Because propylbenzene emulsion coating adhesive does not contain volatile toxic solvents, it can not only reduce the residual toxicity on the surface of the printed matter, but also facilitate the cleaning of the film coating equipment, and it can eliminate the fire risk and hidden danger caused by static electricity and flammable solvents. It is therefore called "green" printed material.

At present, oil-based film-adhesives have the disadvantages of high flammability, high toxicity, environmental pollution, and high cost. In order to solve these problems, Zhaoqing Zhongda Technology Co., Ltd. has used its own advantages to organize scientific research personnel inside and outside the factory to tackle the problem. After more than one year of hard work, it finally developed a high-precision dry film adhesive, which is environmentally friendly. , With non-toxic, non-irritating odor, non-corrosive, non-flammable, non-explosive, safe to use, the product can be directly diluted with water or alcohol during use.

Put the bottom material into the reactor and raise the temperature to 86°C. Put the dropping liquid into the high tank and start dropping slowly into the reactor. Put the pre-emulsion into the other high tank and slowly start the reaction. in. Five minutes later, a blue liquid appeared in the reactor. The two drops should be evenly dispersed between 86°C and 88°C for about three hours. The pre-emulsion should be dripped in as early as five minutes. After instilling for two hours, cool down to below 45°C and slowly neutralize with a neutralizer until PH equals 7. The viscosity-increasing resin was slowly added to the propylbenzene emulsion under high-speed stirring using a disperser, stirred at 500 rpm for half an hour, and defoaming agent and leveling agent were added to the barrel after filtration.

To make a blue emulsion with a solids content of more than 50 and a viscosity of less than 20 seconds, strictly follow the process conditions in addition to the formula.

The plastic products produced by this method are covered by the film, and the products such as brightness, indentation, knurling, paddle wheel, and adhesive force of the ink and the adhesive can exceed the SBS solvent-based film adhesive. product.