Tubular Vacuum Filter Bag Side Fold for Higher Fill Volume
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Solution Overview
Problem
Existing vacuum cleaner filter bags are costly and complex to manufacture, requiring double unwinding, continuous path control, and multiple welding steps due to their design of two circumferentially welded layers.
Innovation Solution
A tubular vacuum cleaner filter bag with at least one side fold formed by two fold legs, where the side fold comprises three edges, two of which are formed by weld seams, allowing for a simpler manufacturing process and the ability to be turned out to increase filling volume.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of stationary object
If two circumferentially welded layers are used to form the filter bag, then the filling volume can be increased, but the manufacturing complexity and cost increase due to double unwinding, continuous path control, and multiple welding steps
Solution Approach 1:
The filter bag is divided into a tubular body portion and a separate bottom portion that can be folded inward. This segmentation allows the main body to be manufactured as a simple tube requiring only longitudinal and transverse welds, while the bottom portion is added through a separate folding operation, thereby reducing the overall manufacturing complexity while maintaining the ability to achieve required filling volumes
Solution Approach 2:
The bottom portion is designed to fold inward along predetermined fold lines, transforming a two-dimensional flat bottom into a three-dimensional folded structure. This dimensional transformation allows the bottom to be integrated into the tubular body without requiring complex multi-layer welding, as the folding action creates the necessary volume in the third dimension
2Strength
If two circumferentially welded layers are used to form the filter bag, then the structural strength is improved, but the manufacturing time and cost increase due to multiple welding steps
Solution Approach 1:
The bottom portion is pre-formed with fold lines and fold legs during the manufacturing process, allowing it to be quickly folded inward and secured without requiring additional welding operations. This preliminary preparation of the bottom portion structure enables rapid assembly while maintaining structural integrity through the folded design
3Volume of stationary object
If side folds are added to increase filling volume, then the volume capacity is improved, but the manufacturing process becomes more complex
Solution Approach 1:
The fold lines and fold legs are pre-formed during the manufacturing process, creating predetermined folding paths that guide the bottom portion into its final folded position. This preliminary structuring allows the side folds to be created through simple folding operations rather than complex welding or assembly processes
Solution Approach 2:
The bottom portion is designed as a flexible structure that can be folded inward along predetermined lines, allowing it to adapt to the tubular body shape without requiring rigid connections or additional welding. The flexibility of the folded bottom enables volume increase while maintaining ease of manufacture
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The tubular design reduces manufacturing complexity and costs, enabling easier insertion and operation with adjustable filling volume based on the vacuum cleaner's interior, while maintaining effective dust storage capacity.
Implementation Method 1
two in particular opposed edges of the filter material layer are connected thus forming a tube
Implementation Method 2
vacuum cleaner filter bags are often made of non-wovens. Thanks to their excellent dust storage capacity
Data Source
AI summary
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.