Plastic products surface of weld line, how to deal with the clip
The weld line is also called the weld line and clip watermark, is due to the early part of the molten resin from different directions by cooling, at the combination failed to completely fusion came faintly. Can only be weakened or moved to irrelevant places.
Almost all products have weld lines and are difficult to eliminate completely.
Injection molding is the process by which molten plastic enters the mold cavity through a gate and forms a product of a certain shape after cooling. Many products are through holes, angle, plastic flow of the melt mold wall damping on their will, local damping angle will be greater, so even if there is no hole products, molten plastic flow velocity inside will be different, because the velocity is not uniform, at the same time, it is not possible to fill the whole cavity, plastic materials, two different flow rate of molten in a cavity at the rendezvous, which we often say that the clip wave, also known as the joint line. This is the formation of the clamping mechanism.
