The influence of the main processing parameters, including the primary air pressure, the accessory air pressure, the melt throughput rate, and the die-to-collector distance, on the uniformity of adhesive meltblown web produced on the pilot-scale melt-blowing equipment with the added accessory device is investigated using weight measurement and thickness measurement. The effects of the process parameters on the web weight unevenness and the web thickness unevenness are similar, so both the weight unevenness and the thickness unevenness can be used to analyze the web unevenness. The results show that the web unevenness increases with the increasing melt throughput rate and the accessory air pressure; the web unevenness decreases firstly and increases later with the increasing primary air pressure and the die-to-collector distance. POLYM. ENG. SCI., 48:2143-2146, 2008. (C) 2008 Society of Plastics Engineers