Folded Sheet Stack Structure for Low-Friction Single-Sheet Removal
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing sheet stacking techniques result in high friction between sheets, causing adjacent sheets to be partially exposed when removed, leading to increased stack width and impaired usability.
Innovation Solution
The sheets are folded into specific shapes with auxiliary pieces that do not overlap in the stacking direction, allowing for reduced contact area without increasing the stack width, enabling stable and continuous removal of sheets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If the overlapping width between sheets is reduced to decrease contact area, then friction between sheets is reduced, but the width of the stack and sheet container is increased
Solution Approach 1:
The sheet is divided into multiple pieces (first piece, second piece, third piece, fourth piece, fifth piece) with fold lines creating distinct segments. This segmentation allows the sheets to be stacked with reduced overlapping width while maintaining structural integrity through the folded pieces, resolving the contradiction between reducing friction and maintaining compact stack width
Solution Approach 2:
The folded pieces of adjacent sheets are nested within each other in the stacking direction, with the fourth and fifth pieces inserted between specific pieces of adjacent first sheet bodies. This nesting arrangement reduces the lateral width requirement while maintaining adequate contact area for friction-based sheet retention
2Ease of operation
If the contact area between sheets is reduced to prevent multiple sheets from being exposed, then sheet removal becomes less stable, but increasing contact area increases friction and causes partial exposure of subsequent sheets
Solution Approach 1:
Different pieces of the sheet have different functions: the first, second, and third pieces form the main body with specific overlapping characteristics, while the auxiliary piece (formed by folding an end of one of the pieces) provides localized friction control. This local differentiation allows optimized contact area that prevents multiple sheet exposure while maintaining stable removal
Solution Approach 2:
The invention changes the physical parameters of sheet interaction by creating folded pieces with specific geometries and overlapping arrangements. The auxiliary piece's non-overlapping configuration in the stacking direction modifies the friction characteristics, enabling stable single-sheet removal without excessive contact area
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
This configuration reduces friction and prevents partial exposure of subsequent sheets, allowing for stable and efficient removal of sheets without expanding the stack's width, maintaining usability.
Implementation Method 1
Friction between sheets depends on the material of the sheets and the contact area between the sheets
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
It is an object of the invention to provide a technique for reducing the contact area between adjacent sheets to be stacked one on another without increasing the width of a stack of sheets. A representative stack of sheets includes sheet bodies 130A (130B), 140A (140B) each of which is formed by folding a sheet and has a plurality of pieces between both ends of the sheet body. The sheet bodies 130A (130B), 140A (140B) are stacked one on another in such a manner that one of the plurality of pieces of each of the sheet bodies on one side in a stacking direction and another piece on the other side are inserted between pieces of an adjacent sheet body on one side in the stacking direction with respect to the sheet body and between pieces of an adjacent sheet body on the other side in the stacking direction, respectively, wherein an auxiliary piece is formed by folding an end of the piece of the sheet body 130A (130B), 140A (140B).