Glue function is easy to understand,IBM machine already support for stationery,furniture and wood industry
IBM machine make bottle neck by injection,and body by blowing on same machine but different working station.
So the neck of IBM bottle, it is smooth, no flash when injection weight in proper parameter setting.
And there is only one hot gate mark on bottom, bottom surface smooth, no flash.
Hence IBM machine make the bottle surface nice, and no stopping when production.
The most important is cap fitment perfect.