Replaceable Blade Inflation Device for Cushion Packaging
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Solution Overview
Problem
Existing inflatable cushion packaging materials often waste material, inhibit separation of adjacent cushions, and are susceptible to under-inflation or leakage, limiting their utility in packaging applications.
Innovation Solution
An inflation device with a cutting member and sealing assembly that inflates a flexible web of film by directing fluid between layers and cutting open channels to form inflatable cushions, allowing for efficient separation and sealing to prevent air release.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If traditional seal configurations are used to join film layers, then material waste increases and separation of adjacent cushions is inhibited, but structural integrity is maintained
Solution Approach 1:
The seal is divided into two distinct portions: a first seal portion that joins the film layers to define the cushion chamber, and a second seal portion that seals the inflation channel. This segmentation allows each seal portion to perform its specific function optimally, reducing material waste while maintaining structural integrity.
Solution Approach 2:
The inflation channel seal is extracted as a separate functional element from the main cushion seal. The second seal portion specifically seals the inflation channel opening, separating this function from the general cushion sealing function, thereby enabling precise control over inflation while minimizing material usage.
2Ease of operation
If film layers are joined with traditional seals, then cushion formation is achieved, but separation of adjacent inflated cushions is inhibited
Solution Approach 1:
The sealing structure is segmented into distinct portions with different functions: the first seal portion maintains film layer joining strength, while the second seal portion provides a controlled sealing mechanism that allows for easy separation of adjacent cushions through the inflation channel seal.
Solution Approach 2:
Different portions of the seal have different properties optimized for their specific functions. The first seal portion has high bonding strength for joining film layers, while the second seal portion has controlled sealing properties that facilitate cushion separation, achieving local optimization of both strength and ease of operation.
3Reliability
If inflation channels are not properly sealed, then material usage is reduced, but leakage and under-inflation occur
Solution Approach 1:
The inflation channel sealing function is extracted as a separate second seal portion, distinct from the main cushion seal. This allows the inflation channel to be sealed independently and precisely, ensuring reliable inflation while minimizing fluid loss through proper sealing of the channel opening.
Solution Approach 2:
The second seal portion seals the inflation channel opening before the inflation process begins, preventing any potential leakage or under-inflation. This preliminary sealing action ensures that the inflation channel is properly closed and ready for controlled inflation, thereby improving inflation reliability and preventing fluid loss.
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 device effectively inflates and seals film webs to create usable cushions with reduced material waste and minimized leakage, enhancing their utility in packaging and shipping.
Implementation Method 1
A first magnet can be associated with the cutter holder or the inflation assembly. A magnetic member can be associated with the other of the cutter holder or inflation assembly held magnetically. The first magnet and the magnetic member can magnetically hold the cutter holder in the operative position.
Implementation Method 2
The inflation assembly can have a fluid conduit configured for directing a fluid in between the layers to inflate a web of material.
Data Source
AI summary
A flexible structure inflation device, comprising an inflation assembly configured for insertion between first and second overlapping film layers of a web of material, the inflation assembly having a fluid conduit configured directing a fluid in between the layers to inflate the web; and a cutting member held magnetically in an operative position adjacent the inflation assembly to cut the film passing over the inflation assembly.