[請益] 模具頂白及頂凸的差異
資料說:"製品在頂出時很難脫模,在頂針處就會出現頂痕/頂凸"
請問"頂凸"，就是我們常在塑膠製品上所看到，
被頂出銷所擠壓而形成的突出狀圓弧線段嗎?
若是，那頂白又是什麼意思呢?
有點困惑，希望各位大大蒙幫忙解惑~謝謝!
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