Folded Sheet Stack Layout for Low-Height Sheet Dispensing
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Solution Overview
Problem
Existing methods for stacking sheets, such as wet tissues, increase the height of the stack and the container when folded, impairing usability and requiring users to fold sheets manually.
Innovation Solution
A stack configuration where first sheet bodies are folded once and second sheet bodies are folded twice, with alternating fold and gap orientations, allowing sheets to be taken out without increasing the stack or container height, and reducing exposure through the take-out opening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If sheets are folded once to form sheet bodies, then folded sheets can be taken out conveniently, but the height of the stack increases
Solution Approach 1:
The invention applies nesting by placing first sheet bodies (folded once) into the gaps of second sheet bodies (folded twice). This nested arrangement allows the first sheet bodies to occupy the empty space created by the gaps in second sheet bodies, thereby reducing the overall height of the stack while maintaining the folded state of sheets for convenient retrieval.
Solution Approach 2:
The invention utilizes the gap dimension in second sheet bodies to accommodate first sheet bodies. By arranging sheets in alternating orientations with gaps facing each other, the solution transforms the vertical height problem into a spatial arrangement problem, fitting sheets into the gap spaces rather than stacking them vertically.
2Length of stationary object
If sheets are folded twice to form compact sheet bodies, then the stack height is reduced, but the complexity of folding increases
Solution Approach 1:
The invention segments the stack into two types of sheet bodies: first sheet bodies folded once and second sheet bodies folded twice. This segmentation allows different folding complexities to be distributed throughout the stack, with the alternating arrangement ensuring that the overall system achieves compact height while individual folding operations remain manageable.
3Object-generated harmful factors
If first sheet bodies are inserted into gaps of second sheet bodies, then the contact area is reduced and fold exposure is prevented, but the arrangement complexity increases
Solution Approach 1:
The invention applies preliminary action by pre-forming gaps in second sheet bodies through specific folding patterns before inserting first sheet bodies. This pre-prepared gap structure facilitates the subsequent insertion process and ensures that folds are properly contained, reducing the need for complex real-time adjustments during assembly.
Data Source
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AI summary
It is an object of the invention to provide a technique for taking out folded sheets without increasing the height of a stack of sheets in a stacking direction. A representative stack of sheets includes first sheet bodies 12A, 12B each formed by folding a sheet and having a fold 12Aa, 12Ba and an opening 12ab, 12Bb and second sheet bodies 13A each formed by folding a sheet and then further folding the sheet in the same direction. The second sheet body 13A includes a fold 13Aa and an opening 13Ab formed by the first folding and a gap 13c formed by the second folding. The fold and the opening of each of the first sheet bodies 12A, 12B are inserted into a region on the other side in the gap 13 in one of two second sheet bodies 13 such that the gaps 13 are open in the opposite directions with respect to each other and into a region on one side in the gap 13 in the stacking direction in the other second sheet body, respectively.