The utility model is characterized in that the base body is made of groove shaped sectionalmaterial.
包括基座体，其特征在于：基座体为槽形型材。
2
The sectionalmaterial has the characteristics of easy contraction, large occlusion area, simple manufacturing technology, low cost, wide adaptability of material and arbitrary size of products.
具伸缩容易，遮挡面 积大，制造工艺简单，成本低，材料适应性广，制品大小任意的特点。
3
The feeding head shape of a die and a streamlined sprue runner were designed after an analysis on the cross sectional shape and the extrusion forming ability of PA66 material.