Staggered Fibrous Pad Stack for Resealable Packaging
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Solution Overview
Problem
Conventional stacks of impregnated cotton pads face decohesion issues during individual removal, leading to accidental picking of multiple pads or partial separation, especially when the decohesion strength is weak, resulting in delamination.
Innovation Solution
A stack arrangement where each fibrous pad is offset from the one below it, allowing easy removal by gripping an edge, reducing the risk of decohesion and enabling balanced and space-efficient packaging, with optional angular offset and resealable cylindrical packaging for added stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If pads are stacked with aligned edges for compact packaging, then packaging efficiency is improved, but individual pad removal becomes difficult and causes decohesion
Solution Approach 1:
The patent applies asymmetry by offsetting pads from the central axis of the container. Each pad is positioned at a different radial distance from the axis, creating an asymmetric arrangement where pads are staggered rather than aligned. This asymmetric positioning allows the upper edge of each pad to be accessible for gripping while maintaining compact vertical stacking, thus resolving the contradiction between packaging efficiency and ease of removal.
2Ease of operation
If pads are made with weak decohesion strength to allow easy separation, then individual removal is facilitated, but accidental picking of multiple pads or partial separation occurs
Solution Approach 1:
The patent applies local quality by creating a localized gripping zone at the upper edge of each pad that extends beyond the container walls. This localized feature concentrates the user's gripping action on a specific area, ensuring that force is applied precisely to the intended pad rather than distributing across multiple pads. The offset positioning ensures that only the upper edge of the target pad is accessible for gripping, while other pads remain protected and inaccessible.
3Ease of operation
If pads are offset from central axis for easy removal, then individual pad gripping is improved, but packaging stability may be reduced
Solution Approach 1:
The patent applies equipotentiality by ensuring that all pads rest on a common horizontal support surface at the bottom of the container. This creates a stable base where each pad, regardless of its radial offset position, has equal support and potential energy reference point. The offset arrangement allows pads to be positioned at different radial distances while maintaining vertical stability through the shared horizontal support plane, preventing tilting or instability.
Data Source
Figure 1~5
AI summary
The stack has fibrous pads, where each pad is impregnated with fluid and is composed of cotton fibers. Each pad is positioned in a staggered manner with respect to superposed pads in a specific dimension and angle in order to grip one edge of pad situated at top of the stack which is contained in resealable packaging, where the dimension is comprised between 5 and 20 millimeters and angle is comprised between 2 and 90 degrees. Independent claims are also included for the following: (1) a resealable packaging containing a stack of fibrous pads (2) a method for manufacturing a stack of fibrous pads.