Abstract
Summary A study of the damaged and defective milk bottles and related data in two large bottling plants resulted in the following conclusions: 1.Bottles were rejected because of impact shock breakage and damages, thermal shock cracks, etched surface, and manufacturing flaws. 2.Spalls, chips, and impact breakage in general occurred most frequently around the lips and the bottom rims of Sharp edges on the bottles contributed materially to chipping and spalling. Thermal shock cracks occurred most frequently in the lip and neck region. A significant amount of thermal shock cracking occurred in the bottle washing operation. 3.The rejection percentages were in the increasing order: pints, 1 2 pints, quarts and gills. There was some relation between low rejection and few trips per Large percentages of wholesale distribution without bottle deposit were accompanied by few trips per bottle.
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