More and more large size of plastic injection molding parts are used in automotive industry. For consideration of cost, the application of spray free injection parts is more and more extensive. However, this also requires higher cosmetic quality of injection molding parts. On some large parts such as bumpers, dashboards, door panels and long interior plastic accessories, it is very common to see an appearance defect characterized by a streak or stripes perpendicular to the plastic flow direction, which looks like a pattern on the skin of a tiger. We call this “Tiger Flow Line”, for more information on the flow line, please Tiger flow line Below is an example to demonstrate how HSMold solve this kind of issues. Product name Dashboard Material PP Color black Mold Tem….