Vacuum Extraction Hood for Flexible Package Air Removal
Solution Overview
Problem
Existing packaging methods for granular or flowable materials fail to effectively remove air from flexible packages before sealing, leading to increased bulk and compromised package configuration, which affects handling and storage.
Innovation Solution
A vacuum extraction apparatus with a downwardly-open hood and guide rails is used to extract air from packages as they are conveyed, combined with a closing mechanism to maintain the evacuated state until sealing, ensuring package integrity and uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If air is not extracted from packages before sealing, then the sealing process is simpler and faster, but the package bulk increases and the squared configuration is compromised
Solution Approach 1:
The patent extracts air from packages using a vacuum hood that removes air through vacuum ports before sealing, directly reducing package bulk and improving squared configuration while maintaining manageable system complexity through integrated design
Solution Approach 2:
The vacuum hood serves multiple functions: it extracts air from packages, guides packages through the extraction zone using guide rails, and coordinates with the closing mechanism to maintain evacuated state, consolidating multiple operations into a single apparatus
2Manufacturing precision
If a vacuum extraction system is implemented, then package bulk is reduced and squared configuration is maintained, but the device complexity and manufacturing cost increase
Solution Approach 1:
The extraction hood is divided into multiple vacuum ports that can be independently positioned and controlled, allowing the system to achieve uniform package configuration while simplifying manufacturing through modular construction of the hood structure
Solution Approach 2:
Guide rails act as intermediaries between the vacuum extraction system and packages, ensuring proper package positioning and alignment during extraction, which maintains configuration uniformity while simplifying the overall system design by separating guidance and extraction functions
3Productivity
If air is extracted before sealing, then package handling and storage efficiency improve, but the sealing timing becomes more critical and process complexity increases
Solution Approach 1:
Air extraction is performed before sealing in a dedicated vacuum hood zone, preparing packages in advance for sealing and allowing a controlled time window for the sealing operation, which improves handling efficiency while managing timing criticality through sequential process design
Solution Approach 2:
The vacuum extraction system operates continuously as packages move through the hood on the conveyor, maintaining evacuated state throughout the extraction zone, which maximizes productivity by eliminating idle time and ensuring consistent package preparation for sealing
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 apparatus reduces package bulk, maintains a squared configuration, and enhances handling and storage efficiency by minimizing air volume within the packages, thereby improving shelf life and quality of contents.
Implementation Method 1
a downwardly open, vacuum extraction hood through which the packages are conveyed... connected in fluid communication with a vacuum source to extract air from within each package
Data Source
AI summary
An apparatus for extracting air from within flexible packages having granular or otherwise flowable contents includes a package conveyor and a downwardly-open, vacuum extraction hood through which the packages are conveyed so that an upper portion of each package is moved through the extraction hood. The interior of the hood is joined in fluid communication with a vacuum source, so that air is extracted from within each package as it is conveyed through the hood. The present apparatus further includes a closing mechanism positioned immediately downstream of and in operative association with the extraction hood, whereby the upper portion of each package is maintained in a closed configuration prior to sealing, so that the interior of each package is not exposed to ambient conditions after it is conveyed out of the extraction hood, and prior to sealing of the upper portion.