Big Bag Outer Liner for Contamination Control
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Solution Overview
Problem
Existing containers for bulk material storage and transport, such as big bags, face contamination issues during filling and emptying, particularly due to external contamination entering the container, which is undesirable in high-care environments.
Innovation Solution
A container design featuring an outer bag that envelops the inner bag with a stitched or releasable fastening mechanism at the upper edge, allowing for easy removal of the outer bag, reducing contamination risks and enabling efficient transfer to high-care environments, while also providing protection and facilitating automation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the container is filled without an outer bag, then the filling process is simpler and faster, but contamination can occur during filling and transport
Solution Approach 1:
The container system is divided into two distinct parts: an inner bag for holding bulk material and an outer bag for protection during transport and filling. This segmentation allows the inner bag to remain clean while the outer bag handles contamination exposure, resolving the contradiction between filling efficiency and contamination prevention.
Solution Approach 2:
The outer bag acts as an intermediary protective layer between the inner bag and the external environment. It shields the inner bag from contamination during transport and filling operations, enabling efficient filling processes without compromising product purity.
2Object-affected harmful factors
If the outer bag is tightly secured to the inner bag, then contamination is prevented, but the outer bag becomes difficult to remove
Solution Approach 1:
The fastening means provide dynamic adjustability - they secure the outer bag firmly during transport to prevent contamination, but can be easily released when needed. This dynamic characteristic resolves the contradiction between secure attachment and ease of removal.
Solution Approach 2:
The separation of the outer bag and inner bag through detachable fastening means allows independent handling of each component. The outer bag can be removed and disposed of while the clean inner bag is transferred to the high-care environment, balancing contamination prevention with operational ease.
3Ease of operation
If the inner bag is exposed during transport, then the container is easier to fill, but the inner bag is vulnerable to contamination and damage
Solution Approach 1:
The inner bag is nested within the outer bag, allowing the container to be filled through the outer bag's opening while the inner bag remains protected. This nested structure enables filling accessibility while maintaining the reliability and protection of the inner bag throughout transport and handling.
Data Source
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AI summary
The present invention relates to a container (10) for storing and/or transporting bulk material, in particular a so-called "big bag". The container for storing and/or transporting bulk material comprises: - a bag (18) configured to hold the bulk material; - at least one filling and/or emptying opening arranged in the bag; - an upper edge arranged on or close to the opening; - an outer bag (20) substantially enveloping the bag as an outer liner; and - fastening means (26, 28) for fastening the outer bag to the upper edge, wherein the outer bag at least partially comprises a substantially transparent wall for the purpose of checking for contamination.