currently, highlight and weldless molds are used to make planner weldless plastic parts, in the case of flat-panel TV frames, they may not have to require making highlight shell, instead, deep-hole drilling is sufficient to create the media channels on the cavity. most plastic parts have some curvature on its surface. It is difficult to transfer the heat homogenously without using highlight shell, leading to weld lines and deformations.
but that kind of mould and molding cost are very high!
Yes! that kind of molding is perfect, but cost is a big problem, it depends on customer opinion
I do know that, but highlight and weldless mold is too expensive
This article is great! yes, highlight and weldless molding can save times and moneys, although the mold cost is higher than a common mold cost, but For a mass production, the cost is worth paying