Shot Development in Meltblown Webs

Various shot observations were obtained from meltblown webs by using simple measurement techniques that cannot be disputed easily. Some of these measurements produced unexpected and interesting results, which indicate that shot development is more complicated than was previously thought. Three basic models for shot development are proposed and reviewed qualitatively in terms of their ability to explain tbe experimental results. The most difficult challenge of these models is to explain how the location and speed of the web collector significantly influence shot availability in webs.