塑料制品不足： 主要由于供料不足、融料填充流动不良，充气过多及排气不良等原因导致填充型腔不满，塑料制品外形残缺不完整或多型腔时个别型腔填充不满。
Insufficiency of plastic products: mainly due to insufficient material supply, poor filling flow of melt materials, excessive inflation and poor exhaust, etc., leading to unsatisfactory filling cavity, incomplete shape of plastic products or individual cavity filling unsatisfactory.
尺寸不稳定： 主要由于模具强度不良，精度不良、注射机工作不稳定及成形条件不稳定等原因，使塑料制品尺寸变化不稳定。
Dimensional instability: Due to poor die strength, poor precision, instability of injection machine and forming conditions, the size change of plastic products is unstable.
气泡： 由于融料内充气过多或排气不良而导致塑料制品内残留气体，并呈体积较小或成串的空穴（注意应与真空泡区别）。
Bubbles: Residual gases in plastic products are caused by excessive or poor gas discharge in melting materials, and appear as small or clusters of holes (attention should be paid to the difference between vacuum bubbles).
塌坑（凹痕）或真空泡： 由于保压补缩不良，塑料制品冷却不匀，壁厚不匀及塑料收缩率大。
Collapse pit (concave) or vacuum bubble: due to poor pressure-holding and feeding, plastic products have uneven cooling, uneven wall thickness and plastic shrinkage rate.
飞边过大： 由于合模不良，间隙过大，塑料流动性太好，加料过多使塑料制品沿边缘出现多余薄翅。
Flying edge is too large: due to poor die closure, too large gap, too good plastic fluidity, too much feeding makes plastic products along the edge appear redundant thin wings.