Air Cushioning Bag Structure for Shock-Resistant Packaging
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Solution Overview
Problem
Existing air cushioning materials for packaging face challenges in providing sufficient resistance to external forces and reliably restoring cushioning ability without increasing the number of parts or complicating the structure, leading to potential damage from vibration shocks during transportation.
Innovation Solution
A packaging material design featuring sealed bags with internal partitions dividing them into equal volume chambers, connected by a ventilation passage with a bending section that crosses the line connecting chamber centers, allowing gas to flow and return efficiently between chambers, enhancing resistance and cushioning effectiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a straight ventilation passage is used between chambers, then gas flow rate is high, but resistance to external force is insufficient
Solution Approach 1:
The ventilation passage includes a bending section that curves the gas flow path instead of using a straight passage. This curvature increases the resistance received by gas during movement, enhancing the cushioning effect by converting more external force energy to heat through friction, while maintaining a simple single-passage structure without additional parts
2Reliability
If gas moves freely between chambers, then cushioning effect is enhanced, but restoration of cushioning ability is insufficient
Solution Approach 1:
The bending section in the ventilation passage creates optimal resistance that allows gas to return reliably from one chamber to the other after external force removal. The curved path design ensures sufficient friction to dissipate energy during outward gas movement while still permitting effective restoration, achieving reliable cushioning ability recovery without excessive energy loss
3Reliability
If foamed plastic is used for cushioning, then cushioning effect is good, but environmental impact increases
Solution Approach 1:
The invention uses gas-filled bags instead of foamed plastic to provide cushioning effects. The gas (air) can be moved between chambers through the ventilation passage to absorb and mitigate external forces, achieving effective cushioning while being environmentally friendly as the material can be disposed of by simple incineration without generating harmful gases or requiring complex recycling
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 design effectively increases resistance to external forces and reliably restores cushioning ability by dissipating energy as heat and ensuring sufficient gas flow, improving the packaging material's ability to absorb shocks without complicating the structure or increasing parts.
Implementation Method 1
causes resistance such as friction that the gas has during movement to change energy of the external force to, for example, heat and dissipate the heat
Implementation Method 2
when the first chamber of the bag body receives external force through the outer box, gas is moved from the first chamber to the second chamber through the ventilation passage against pressure applied to the second chamber by the outer box, and when the external force is removed, the gas is returned from the second chamber to the first chamber
Data Source
AI summary
A packaging material includes: an outer box that accommodates an article to be packaged; and a cushioning material including: a sealed bag body with gas confined inside; a partition that divides an inside of the bag body into a first chamber and a second chamber each in an equal volume; and a ventilation passage communicating the first and second chambers, the cushioning material being disposed in a gap between an outer surface of the article and an inner wall of the outer box.