Often the edge can be modified with little noticeable change in the bottle's appearance. The line will run more smoothly and, most importantly, more economically. Tall slender packages also can add operational costs. Many people like the appearance of a tall slender package. What they may not realize is that this style of container is open unstable on the packaging line.
Instability contributes to operational problems in two ways.
First unstable bottles are more likely to fall over. When they fall over in a filler or capper for example the line will usually need to be stopped to clear the fallen bottle. Second unstable bottles may be hard to label accurately. As they enter the labeling station they may be jiggling slightly. This motion may result in skewed or wrinkled labels.