Interfolded Absorbent Sheet Stacking for Higher Absorbency
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Solution Overview
Problem
Conventional folded absorbent sheet products have limited absorbency and thickness, leading to excessive waste due to their single-fold design, which requires users to take multiple sheets at once to achieve desired absorbency.
Innovation Solution
A stack of interfolded absorbent sheet products is created by folding each sheet inward along parallel edges to form inner panels and then perpendicular edges to form outer panels, allowing at least one outer panel to be inserted between adjacent sheets, increasing thickness and absorbency while maintaining separate sheets for efficient dispensing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If single folded tissue is used, then ease of dispensing is improved, but absorbency and thickness are insufficient
Solution Approach 1:
The tissue sheet is folded such that one portion is inserted between adjacent sheets in the stack, creating a nested configuration where sheets are partially interlocked. This nesting approach increases the effective thickness and absorbency of each dispensable unit while maintaining the ability to easily pull individual sheets from the stack through the dispenser.
2Device complexity
If single folded tissue is used, then device simplicity is improved, but volume and thickness are limited
Solution Approach 1:
The folding process transitions from a simple single-fold configuration to a multi-dimensional folded structure where portions of the tissue are inserted between adjacent sheets in the stack. This dimensional transformation creates a more complex three-dimensional configuration that increases volume and thickness while maintaining manufacturing feasibility through standardized folding operations.
3Quantity of substance
If multiple single folded tissues are taken at once to achieve desired absorbency, then absorbency requirement is met, but product waste increases
Solution Approach 1:
Multiple tissue sheets are merged into a single folded unit through the interfolded configuration, where portions of adjacent sheets are inserted between each other. This merging creates one cohesive dispensable unit that provides the absorbency of multiple separate tissues while being dispensed as a single item, thereby eliminating the waste associated with discarded single tissues that did not meet absorbency requirements.
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 interfolded design enhances the volume and absorbency of each sheet, reducing waste by allowing for more efficient use of the product without compromising the ease of dispensing, as each sheet can be pulled from the stack while maintaining frictional hold through overlapping panels.
Implementation Method 1
maintaining frictional hold through overlapping panels
Data Source
AI summary
A method of stacking a plurality of absorbent sheet products is provided. In an embodiment, the method includes folding an absorbent sheet inwardly along a first folding line to form a first inner panel, folding the absorbent sheet inwardly along a second folding line, substantially parallel to the first folding line, to form a second inner panel, folding the absorbent sheet along a third folding line substantially perpendicular to the first and the second folding lines to form a first outer panel and a second outer panel, sandwiching the first and the second inner panels therebetween to obtain one of the absorbent sheet products, and inserting at least a section of at least one of the first and the second outer panels of each one of the absorbent sheet products between the first and the second outer panels of an adjacent one of absorbent sheet products of the stack.