Heat sealing bands also allow you to design three-dimensional contours owing to their elasticity. We are thus in a position to manufacture complete sealing bars for 3D contours. Spouts are a typical example here.
A flat film is fused onto both sides of a rigid, convex spout; it forms the top of a pouch or bag with a screw-type or tube connection of the kind often encountered in medical applications.
The challenges are similar to those presented by 2D contours, except that a thin film is additionally bonded to a hard, three-dimensional plastic.
The sealing bar contour, heat sealing band and counter bar must be perfectly executed.

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