Compared with the traditional injection molding process, high gloss injection molding can greatly improve the glossiness of the product surface, solve the problem of weld line on the product surface, and improve the surface hardness of the product to a certain extent. Therefore, more and more products use high gloss injection molding to replace the subsequent surface treatment process.
How to eliminate weld mark on product surface by RHCM
The formation of weld line is that two or more strands of fused plastics meet and meet in the filling process of injection molding. If the surface temperature of die cavity is insufficient or the pressure of fluid is insufficient, the confluence end can not be completely fused, and the weld line defect will appear on the product surface.
How to solve the problem of floating fiber on the surface of products by RHCM
Another advantage of RHCM technology is that it can significantly eliminate the problem of fiber exposure on the surface of modified engineering plastics with fiber. Generally, in traditional injection molding, the glass fiber will be oriented along with the flow direction of the melt plastic. If in the filling process, due to insufficient surface temperature of the mold cavity, the melt plastic will suddenly solidify on the mold wall, and the glass fiber will not be completely wrapped by the resin. In addition, due to the difference in shrinkage characteristics between glass fiber and resin plastic, glass fiber will be more easily exposed to the surface of the product after cooling. By using RHCM high gloss non marking injection molding technology, we can change the crystalline state of the resin plastic product surface by controlling the heating and cooling time changes of the mold cavity surface, which can effectively eliminate the problem of glass fiber exposure on the product surface.