In large parts of the edible oil industry, the standard 2921 neck weighting 2.74 g is used for 1 litre pet bottles. This neck size was developed at a time when plastic closures were meant to fit both glass bottles and pet bottles.
In large parts of the edible oil industry, the standard 2921 neck weighting 2.74 g is used for 1 litre pet bottles. This neck size was developed at a time when plastic closures were meant to fit both glass bottles and pet bottles.
