Evaluation of In-Package Performance of Antistatic Materials

摘要

The test procedure initially prepared in Phase I and refined within this Phase II report has shown excellent reliability in predicting the static charge propensity of packaging materials. Although the modified sensor used in Phase II testing was found to be suitable for this purpose, it is not intended that this sensor design be considered as a final configuration for incorporation into a future test procedure establishment. The best of the antistatic materials (other than the conductives) proved to be all polyethylene, either in film or foam form. The most dangerous of all of the materials tested proved to be plain polypropylene foam; this material exhibited rapid static charge buildup with the associated hazards where sensitive components are exposed. There appears to be substantial hazards connected with the application of stretch films. Preliminary tests indicate sharp differences between the variety of films currently being marketed, with those containing EVA additives and PVC types representing the apparent extremes in static charge propensity (low and high).