All Extron blown film dies are computer modelled for optimum melt flow channel configuration and rheological compatibility. The spiral distributor is designed to provide a balance between minimum residence time, reduced sensitivity to resign changes and uniform polymer flow. High output blown film lines have external and internal bubble cooling.

IBC-system with precise adjustment of the bubble diameter guarantees exceptionally wide BUR-range and excellent gauge uniformity especially on thinner films. Dies are available as oscillating or stationary model. Extron is also prepared to deliver versatile side fed dies for barrier films consisting of sophisticated multilayer structure.