Bag Venting via Filtered Overlapping Strip
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Solution Overview
Problem
Conventional packaging containers for granular or powder materials face challenges in effectively venting air and gases while preventing material loss and moisture penetration, especially when filled with fine particles, as they often compromise on sealing and emission protection.
Innovation Solution
A packaging container design featuring an outwardly positioned overlapping strip without outer openings, which covers a filter with outer openings, provides effective emission protection and venting by allowing air to pass through a large surface area filter, ensuring the container remains sealed against moisture and foreign materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If the packaging container has inner and outer openings distributed across the surface area within overlapping strips for venting, then air and gases can escape, but the sealing effectiveness against moisture and foreign materials deteriorates
Solution Approach 1:
The venting function is segmented from the sealing function by providing separate inner openings in the inwardly positioned overlapping strip and outer openings in the outwardly positioned overlapping strip, with a filter positioned between them. This segmentation allows each opening to be optimized for its specific function while maintaining overall sealing integrity.
Solution Approach 2:
A filter is introduced as an intermediary element positioned between the inner and outer openings. The filter acts as a mediator that allows air and gases to pass through while blocking moisture and foreign materials, resolving the contradiction between venting effectiveness and sealing protection.
2Object-generated harmful factors
If a filter with fine pores is used to prevent fine powder material loss, then emission protection improves, but the venting efficiency deteriorates due to restricted gas flow
Solution Approach 1:
The solution transitions from a single-dimensional filter design to a multi-dimensional system by distributing the filtering function across multiple layers (inwardly positioned overlapping strip with inner openings, the filter itself, and outwardly positioned overlapping strip with outer openings). This dimensional expansion allows fine pore filtering while maintaining gas flow efficiency through the combined structure.
Solution Approach 2:
The venting path is segmented into multiple stages: inner openings for initial gas entry, filter for particle separation, and outer openings for final gas discharge. This segmentation allows the filter to use fine pores for effective particle retention while the distributed opening structure maintains overall venting efficiency.
3Productivity
If the outwardly positioned overlapping strip has outer openings for venting, then gas escape is improved, but emission protection against fine powder material deteriorates
Solution Approach 1:
The filter positioned between the inner and outer openings serves as an intermediary that allows gas to pass through to the outer openings while intercepting and retaining fine powder particles. This intermediary structure enables the outer openings to function for gas escape without compromising emission protection.
Solution Approach 2:
The emission protection function is segmented from the gas escape function by separating the openings into two distinct locations: inner openings protected by the filter for particle retention, and outer openings for unrestricted gas discharge. This segmentation allows each opening type to be optimized for its specific purpose.
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
This design effectively vents air and gases while preventing material loss and moisture penetration, even with fine powder materials, by using a filter with large surface area openings that maintain sealing integrity, especially during machine filling and compacting processes.
Implementation Method 1
a filter with outer openings, provides effective emission protection and venting by allowing air to pass through a large surface area filter
Implementation Method 2
an outwardly positioned overlapping strip without outer openings, which covers a filter with outer openings, provides effective emission protection and venting
Implementation Method 3
air or other gases escaping from the interior are able to lift the outwardly positioned overlapping strip off the inwardly positioned overlapping strip
Data Source
AI summary
A packaging container has walls made of film defining an interior of the packaging container. At least a first one of the walls has two wall parts that overlap one another forming an inwardly positioned overlapping strip and an outwardly positioned overlapping strip and providing an intermediately positioned venting passage. The overlapping strips are connected to one another by a securing seam that extends along an edge of the inwardly positioned overlapping strip. The venting passage communicates through inner openings with the interior and through outer openings with the ambient. The outwardly positioned overlapping strip has no openings. At least one filter is provided with the outer openings of the venting passage and is positioned underneath the outwardly positioned overlapping strip in a flat arrangement.