Wet Sheet Package with Zigzag Folding for Easy Grasping and Unfolding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wet-sheet packaging, such as facemasks, requires users to unfold folded sheets after removal from packaging, which can be difficult due to adhered cosmetic liquid and complex designs like eye and nose cut-outs, leading to user inconvenience.
Innovation Solution
The packaging design includes an outer bag with a take-out opening and inner container that allows the topmost wet sheet to be grasped and unfolded while being removed, with the sheet folded in a zigzag shape and accommodated in an inner container that supports easy extraction and minimizes liquid adherence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If wet sheets are folded into a compact shape for packaging, then the packaging size is reduced, but the sheets adhere to each other due to cosmetic liquid permeation
Solution Approach 1:
The wet sheet is divided into multiple sections by fold lines, creating a segmented structure that prevents complete adhesion. When folded, only portions of adjacent sections contact each other, reducing the harmful adhesive effect of the cosmetic liquid while maintaining compact packaging.
Solution Approach 2:
The sheet is pre-folded into a compact shape before packaging, with fold lines strategically positioned to create separation zones. This preliminary folding action ensures that when the sheet is removed from packaging, the segmented structure prevents full adhesion, solving the problem before the user needs to unfold it.
2Productivity
If the facemask is folded into sections for compact packaging, then the packaging efficiency is improved, but the user experiences difficulty in spreading out the facemask after removal
Solution Approach 1:
The facemask is segmented by fold lines into distinct sections that can be easily separated. This segmentation allows the user to unfold the mask by simply pulling apart the sections along the fold lines, making the spreading action much easier despite the compact folded packaging.
Solution Approach 2:
Instead of folding the mask in a way that requires complex unfolding maneuvers, the fold lines are arranged to enable simple reverse folding. The mask is folded into a compact shape during packaging, but the same fold lines facilitate easy unfolding by the user in the opposite direction.
3Volume of moving object
If multiple folded facemasks are stacked vertically for packaging, then the packaging compactness is improved, but the topmost sheet's edge is difficult to grasp for removal
Solution Approach 1:
The fold lines are positioned asymmetrically, with one edge of the topmost sheet having a unique configuration that protrudes or is more accessible. This asymmetric folding creates a natural grasping point on the topmost sheet while maintaining overall compact stacking of multiple masks in the packaging.
Solution Approach 2:
The folding pattern creates dimensional variations in the stacked package, with the topmost sheet's edge extending slightly beyond the compact stack in a specific direction. This dimensional change provides an accessible grasping point without significantly increasing the overall packaging volume.
Data Source
Figure 1
Figure 2
Figure 3~4(b)
AI summary
Provided is wet-sheet packaging that eliminates the troubles that a user encounters in spreading out a wet sheet (2) after the user has taken it out from the packaging, and that thereby improves the convenience in use of the wet sheet (2). A layered body (3) of folded wet sheets is accommodated in an inner container inside an outer bag (8) that is provided with an outer take-out opening (23) at its surface. The outer take-out opening (23) is freely opened and closed by a closure sheet (24). The layered body (3) is accommodated so as to allow a user to grasp an edge of the upper surface of the topmost wet sheet (2) and to spread out the wet sheet (2). The layered body (3) is made by stacking multiple wet sheets (2), each of which is folded into a zigzag shape, to form a band-shaped folded body. The edge (19) is disposed at the middle part of the folded body in the width direction so as to face the lengthwise direction.