Filter Bag for a Vacuum Cleaner and Method for Identifying an Area of a Vacuum Cleaner Bag Directly Subjected to Flow
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United States of America Patent
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Jun 30, 2016
app pub date -
Aug 8, 2014
filing date -
Aug 9, 2013
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Abstract
The present invention relates to a filter bag for a vacuum cleaner which is formed from a filter material which comprises at least three filter material layers. In the case of the filter material layers, at least one layer is thereby a scrim and at least one layer a nonwoven fibre layer which comprises non-joined staple fibres and/or non-joined filaments.
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