Vacuum cleaner filter bag having a side fold
AssigneeEurofilters Holding N.V.
InventorsRalf Sauer, Jan Schultink
Life of this patent
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Abstract
A vacuum cleaner filter bag is provided. The vacuum cleaner filter bag includes at least one side fold formed by two fold legs, and the vacuum cleaner filter bag is designed as a tubular bag, wherein, in a turned-in state, the at least one side fold has at least three edges, wherein two of the edges are formed by a respective weld seam, and wherein the side fold can be turned out with the edges formed by a weld seam.
Claims15
A vacuum cleaner filter bag with at least one side fold formed by two fold legs,
- wherein the at least one side fold comprises, in a turned-in state, at least three edges, two of the edges being formed by one weld seam each,
- wherein the side fold can be turned out with the edges formed by a weld seam;
- and
- wherein the vacuum cleaner filter bag comprises a tubular bag, the vacuum cleaner filter bag comprising a bag wall made from a filter material layer, two opposing edges of the filter material layer being joined together to form a tube.
A method of manufacturing a vacuum cleaner filter bag with at least one side fold formed by two fold legs, comprising the steps of:
- providing a filter material layer,
- forming a tube from the filter material layer, comprising joining together two opposing edges of the filter material layer to form the tube and welding a straight weld,
- welding weld lines that will form edges of the at least one side fold,
- stamping out filter material for forming the edges of the at least one side fold;
- welding transverse weld seams for closing an upper and lower ends of the tube,
- turning in the at least one side fold;
- and
- separating off the vacuum cleaner filter bag in the region of the transverse weld seams.
Dependencies are inferred from the claim text.