Blown Tubing - A thermoplastic
film which is produced by extruding a tube, applying
a slight internal pressure to the tube to expand it
while still molten and subsequent cooling to set the
tube. The tube is then flattened through guides and
wound up flat on rolls. The size of blown tubing is
determined by the flat width in inches as wound rather
than by the diameter as in the case of rigid types of
tubing.
