Container having collapse panels with longitudinally extending ribs

摘要

A hollow blow-molded container of a biaxially oriented thermoplastic material in which the container walls contain collapse panels with ribs to accommodate evacuation of the container without deleterious changes in the appearance of the container. The ribs within the collapse panels provide for increased rigidity of the container during contraction of the contents of the container, and extend longitudinally along the sides of the collapse panels.