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US 5,689,989 AGranted
Method for the zigzag-like folding of a strip-like foil
AssigneeSulzer Chemtech AG
InventorsPhilipp Suess, Martin Bar, Xaver Stockli, Rainer Stockli
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AssigneeSulzer Chemtech AG
InventorsPhilipp Suess, Martin Bar, Xaver Stockli, Rainer Stockli
Estimating the term…
The method for the zigzag-like folding of a strip-like foil includes the following steps in an advantageous embodiment: 1. prepleating, whereby a zigzag-like or wave-shaped folding is effected in which the folded edges are formed in cross-section as arcs with a radius of curvature greater than about 1 mm; 2. follow-up forming of each second folded edge in that a coining tool is used to influence the fold angle and to reduce the radius of curvature of the folded edge to a value smaller than 1 mm; 3. follow-up forming of the remaining folded edges in the same manner as during the second step. The follow-up forming steps are executed with tumble pressing devices which respectively include a rotatable toothed roll and a coining tool. The coining tool is drivable by means of an eccentric device and is connected via a pendulum axle with a vertically displaceable slider. The coining tool, in cooperation with a respective tooth of the roll, reduces the radius of curvature of a folded edge and can additionally influence the associated fold angle.
A method for the zigzag-like folding of a strip-like foil, the method comprising:
A tumble pressing device for follow-up forming of a strip-like foil that has been prepleated with a zigzag-like or wave-like folding, the device comprising:
A plant for manufacture of a zigzag-like foil strip comprising the following devices arranged in series:
Dependencies are inferred from the claim text.