To Improve The Efficiency of Electrostatic Discharge Protection Measures for Glue Coating Operation of Adhesive Tape Process_ As an Example of Esd Fabric

Abstract

The fire and explosion hazards often caused by electrostatic discharge (ESD) especially in the glue coating operation of adhesive tape process, therefore the ESD protective measure is critical during tape manufacturing. Let the charged tape contact conductive material and connected to earth to prevent the charges accumulation is commonly employed in tape industry, and ESD fabric is one of the commonly used conductive materials. This study focus on the effectiveness of grounding by ESD fabric, and all fabric came from tape production company.The average resistivity of vertical line of ESD fabric is 5 Ω， the transverse line and band is 17GΩ same as the diagonal line and band of both side. In actual ESD protection settings, the contact points of the grounding system of the ESD fabric bond on both sides of the textile. Thus; the efficiency of earthing is poor due to the high resistivity of fabric. We covered the ground side (less than 40% of whole area) of the cloth with aluminum foil to ameliorate efficiency of earthing. After the improvement; the average resistivity of the transverse band on aluminum foil is less than 1Ω，the transverse band without aluminum foil covered from 17GΩ reduce to 381Ω， and diagonal band of both sides drop to less than 65Ω. According to previous consequence; the conductive performance of the grounding of the ESD fabric is obviously improved, and the research results are also spread to the tape industry.