POLYESTER BOTTLES WITH REDUCED BOTTLE-TO-BOTTLE FRICTION

摘要

Polyester bottles are manufactured from a polyester polymer containing an effective amount of uniformly dispersed barium sulfate as a friction-reducing additive. Preferably, the barium sulfate is present in the polyester composition in the range of from about 0.001 wt. % to about 0.1 wt. %, and has an average particle size of from 0.1 micron to 2.0 microns. The polymer may be first formed into a preform that is subsequently blown into the desired bottle configuration.