Inflatable Packaging Material with One-Way Valve Air Columns
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Solution Overview
Problem
Existing inflatable packaging materials are not quickly and easily inflatable, and they do not provide effective cushioning and protection for articles during shipping and storage.
Innovation Solution
The development of an inflatable packaging material with two outer films and a valve assembly that includes upper, lower, and middle valve films, along with a non-sealable material, forming air columns and allowing for one-way airflow to provide effective cushioning and protection. The material is configured with perimeter seals, border seals, and airflow seals to facilitate easy inflation and prevent deflation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional inflatable packaging materials are used, then they provide basic cushioning, but they are not quickly and easily inflatable and do not provide effective cushioning and protection
Solution Approach 1:
The packaging material is divided into multiple air columns separated by border seals, with each column having its own valve assembly. This segmentation allows for independent inflation of each column, improving ease of operation while maintaining effective cushioning through distributed air columns that can independently respond to impacts
Solution Approach 2:
The valve assembly uses a dynamic one-way valve mechanism with valve films that respond to pressure differentials. During inflation, air flows freely into the columns, but during deflation, the valve films close to prevent air escape. This dynamic behavior enables quick inflation while ensuring reliable cushioning retention
2Ease of manufacture
If simple sealing methods are used, then manufacturing is easier, but the packaging material cannot maintain inflated air columns effectively
Solution Approach 1:
The non-sealable material is pre-positioned between the valve films before sealing occurs. This preliminary placement ensures that when heat sealing is applied, the non-sealable material prevents the valve films from fusing together, automatically creating open valve passages without requiring additional machining or piercing steps afterward
Solution Approach 2:
The non-sealable material acts as an intermediary element between the valve films and the heat seal. It interferes with the sealing process in a controlled manner, preventing complete fusion at the valve film interfaces while allowing seals to form elsewhere in the packaging structure, thus maintaining air column integrity
3Ease of manufacture
If valve films are completely sealed together, then manufacturing is simpler, but airflow cannot pass through the valve assembly
Solution Approach 1:
The non-sealable material is strategically positioned to be excluded from specific sealing zones where valve passages must remain open. By removing sealability from these critical areas while maintaining it elsewhere, the design enables automatic formation of airflow pathways during the sealing process itself
Solution Approach 2:
The sealing process parameters are effectively modified by the presence of non-sealable material, which creates localized variations in seal penetration depth and heat transfer. This parameter change ensures that valve passages remain open while other portions of the valve assembly are properly sealed
4Productivity
If air pressure is concentrated in one location, then inflation is faster, but cushioning effectiveness is reduced
Solution Approach 1:
Multiple air columns are inflated simultaneously through distributed valve assemblies, segmenting the inflation process across multiple locations. This segmentation maintains high overall productivity while ensuring even pressure distribution throughout the packaging structure for effective cushioning
Solution Approach 2:
Each individual air column is inflated to slightly excessive pressure, then the one-way valves prevent over-inflation. The distributed partial inflation across multiple columns achieves both fast overall inflation and balanced pressure distribution for optimal cushioning performance
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 packaging material allows for quick and efficient inflation, providing effective cushioning and protection for articles by distributing air pressure evenly, reducing the risk of damage during transit and storage, and can be reused by maintaining inflated air columns.
Implementation Method 1
The valve films form a one-way valve, such that airflow from the inflation passage through the valve passages is permitted, and the valve films cooperate to obstruct reverse airflow from the air columns through the valve passages
Data Source
AI summary
An inflatable packaging material includes two outer films, a plurality of valve films, and a non-sealable material positioned between the valve films. The films are sealed together by a plurality of seals, including a valve seal extending across the material. The seals define a plurality of air columns and an inflation passage in communication with the columns. The non-sealable material is arranged to form valve portions positioned along the valve seal and spaced passage portions positioned along the inflation passage. The valve portions provide valve passages through the valve seal, to allow airflow into each air column. The passage portions are arranged such that one side seal passes through a space between the passage portions to seal one end of the inflation passage, and the other side seal passes through one of the passage portions to create an open inflation port. The valve films allow air to pass through from the inflation passage to the columns, and prevent reverse flow of air from the columns into the inflation passage.