一种用于充气式包装垫的预成型的塑料膜，其包括具有前端和尾端的成卷的材料。
A plastic foil for inflatable type package pad comprises a volumed material with a front end and a tail end.
从而，通过将包括预成型的焊料的晶片放置在所述多个第一柱上，而使得所述焊料可以形成在或者粘附在所述多个第一柱上。
Consequently, the solder can be formed on or adhered to the first posts by placing the wafer having pre-formed solder onto the first posts.
采用一次拉延成型，并在其底部预冲工艺孔，可控制径向应力的大小。
The drawing process for producing the part is completed in one operation, and a hole for machining use is pre-punched to control the magnitude of radial stress.
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