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US 5,181,946 AGranted
Crimped vacuum bag seal and method of making the same
AssigneeHome Care Industries, Inc.
InventorsMark D. Bosses, Yuri Milstein
Life of this patent
Estimating the term…
Abstract
A vacuum cleaner filter bag seal is used to form disposable vacuum cleaner bags by joining two portions of filtration material. The two portions of filtration material are sealed by placing them together and then crimping them so that the layers mechanically interlock. The invention also pertains to a method of providing such a seal.
Claims12
A crimped vacuum cleaner bag seal comprising:
- a first sheet portion of filtration material;
- a second sheet portion of filtration material, said first and said second portions being juxtaposed against one another;
- at least one of said first sheet portion and said second sheet portion having at least two layers, said layers comprising at least one layer of meltblown polymeric material and at least one layer of non-meltblown material;
- and
- a crimped region provided on said first and second sheet portions so that said first and second sheet portions are interlocked to a degree which substantially prevents passage of at least one of gas and dust through said seal.
2 more elements
A method for forming a crimped seal on a vacuum cleaner bag comprising:
- providing a first sheet portion of filtration material and a second sheet portion of filtration material wherein at least one of said first sheet portion and said second sheet portion have at least two layers, said layers comprising at least one layer of meltblown polymeric material and at least one layer of non-meltblown material;
- juxtaposing said first sheet portion and said second sheet portion together;
- and
- crimping at least part of said first sheet portion and at least part of said second sheet portion together to form a crimped region.
1 more element
Dependencies are inferred from the claim text.