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US 6,186,210 B1Granted
Heat sealing device
AssigneeWegener GmbH
InventorMichael Gehde
Life of this patent
Estimating the term…
Abstract
The invention concerns a heat-sealing device for overlapping heat-sealing of film edges, having pressure rollers, for pressing the film edges together after they are heated, which sit on shafts of which at least one is movably guided in the direction of the other shaft and vice versa.
Claims20
A heat-sealing device for heat-sealing overlapping film edges, said heat-sealing device comprising:
- a) first and second spaced shafts, each shaft having ends and carrying a pressure roller and defining a shaft axis;
- b) first and second spaced pivot arms independently pivotable about a pivot axis parallel to at least one of said shaft axes, each of said arms operatively associated with an end of said first shaft;
- c) an adjustment assembly is operatively associated with said first shaft for achieving parallel alignment of said first and second shafts and thereby of said pressure rollers, said adjustment assembly including an adjustment device;
- and
- d) said second shaft is fixed relative to said pivot axis.
2 more elements
A heat-sealing assembly for heat-sealing overlapping film edges, said assembly comprising:
- a) a housing movable across a surface, said housing having upper and lower portions and input and output ends;
- b) a heating element operatively associated with said housing for heat-softening film edges before heat-sealing of the film edges;
- c) first and second spaced shafts, each shaft having ends and carrying a pressure roller and defining a shaft axis;
- d) first and second spaced pivot arms independently pivotable about a pivot axis parallel to at least one of said shaft axes, each of said arms operatively associated with an end of said first shaft;
- e) said pivot axis is fixed relative to said second shaft;
- and
- f) an adjustment assembly operatively associated with said first shaft for achieving parallel alignment of said first and second shafts and thereby of said pressure rollers, said adjustment assembly including an adjustment device.
4 more elements
Dependencies are inferred from the claim text.