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(11) | EP 0 813 839 A3 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | Method for producing an end closure for a vacuum cleaner dust bag |
| (57) This invention relates to a method for producing an end closure for a vacuum cleaner
dust bag by manufacturing in a first stage a tube shaped work piece comprising an
outer layer and one or several lined layers. The work piece is in a second stage severed
mainly perpendicular to the length direction of the tube shaped work piece and the
outer layer is (16a) in connection with said severing operation is provided with one
or several cuts or recesses extending from the cut edge in order to form a flap (26).
In a third stage parts of the end area of the work piece are successively folded inwardly
and in connection therewith the lined layer or layers (16b) are folded inwardly or
are removed within a portion of the area defined by the flap in order to uncover a
part of the inwardly facing side (area 27) of the outer layer. The flap is then provided
with glueing material on the uncovered surfaces and is arranged to overlap at least
one of the the remaining inwardly folded end areas of the work piece. |