Interfolded Hygiene Product Stack With Joined Refill Webs
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Solution Overview
Problem
Existing stacks of interfolded hygiene products, such as tissue paper, face issues during refilling where the leading end of the new stack is not easily accessible, leading to users pinching multiple papers and causing waste, especially when the previous stack is almost depleted.
Innovation Solution
The introduction of a joint between two interfolded webs at the leading or trailing portion of the stack, using means like hook and loop fasteners, adhesive, or embossing, allows for easy connection and refilling of stacks without manual labor, ensuring continuous dispensing by advancing the second stack into the dispensing position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the stack of paper is squeezed into the dispenser to maximize space utilization, then the dispenser can hold more paper, but the leading end of the paper becomes difficult to access and users pinch multiple papers causing waste
Solution Approach 1:
The paper stack is divided into two separate webs (first web and second web) that are interfolded. Each web has its own leading end, and when one leading end is depleted or difficult to access, the other web's leading end remains accessible and can be pulled to continue dispensing. This segmentation ensures continuous availability of accessible paper ends while maintaining high paper capacity.
Solution Approach 2:
The two webs are interfolded in a nested configuration where they are substantially parallel to one another. The webs are arranged such that they nest within each other's folding pattern, allowing both webs to occupy the same dispensing space efficiently. This nested arrangement maximizes paper capacity while ensuring that at least one leading end remains accessible for user retrieval.
2Extent of automation
If two webs are interfolded in a nested configuration with offset tabs to enable automatic feeding, then dispensing automation is improved, but the leading end of the new stack after refilling becomes inaccessible requiring manual intervention
Solution Approach 1:
The leading portion of each web is pre-configured with a loop structure that extends beyond the interfolded stack. This preliminary arrangement ensures that when a new stack is placed in the dispenser, the loop structure automatically provides an accessible leading end without requiring manual manipulation. The loop is formed in advance during manufacturing, so the accessibility feature is built into the product structure itself.
3Ease of operation
If the leading end is positioned at the dispensing opening for easy retrieval, then user convenience is improved, but the paper structure becomes unstable and multiple papers are accidentally withdrawn
Solution Approach 1:
By dividing the paper into two separate webs with offset tabs, the invention creates independent dispensing paths. Each web's leading end can be retrieved without affecting the other web's structure. The offset tab arrangement ensures that when one tab is pulled, it tears at the correct location without triggering simultaneous movement of multiple papers or disturbing the overall stack stability.
Solution Approach 2:
The loop structure in the leading portion acts as an intermediary element between the user's hand and the main paper stack. Users grasp the loop structure for retrieval, which is mechanically coupled to the rest of the web. This intermediary structure provides a stable gripping point that prevents direct contact with and potential disturbance of the underlying paper stack, enabling easy retrieval while maintaining structural integrity.
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 solution prevents waste and untidy dispensing by allowing seamless refilling and maintaining efficient dispensing performance, as the second stack is automatically aligned for dispensing, reducing the need for manual intervention and minimizing paper waste.
Implementation Method 1
using means like hook and loop fasteners, adhesive, or embossing
Implementation Method 2
using means like hook and loop fasteners, adhesive, or embossing
Implementation Method 3
using means like hook and loop fasteners, adhesive, or embossing
Implementation Method 4
the second stack is automatically aligned for dispensing
Data Source
AI summary
A stack of interfolded hygiene products (100), including a first web (1) divided into individual hygiene products by means of lines of weakness (12); a second web (2) divided into individual hygiene products by means of lines of weakness (22); the first web and the second web being interfolded with one another in a nested configuration, wherein the lines of weakness of the first web and the lines of weakness of the second web are offset with respect to one another along the webs; the first web and the second web are joined to one another at a leading portion (4) and/or at a trailing portion (4″) of the webs.