Graduated Dunnage Bag Stripes for Safe Gap Sizing
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Solution Overview
Problem
Users face challenges in selecting the appropriate size of dunnage bags for specific gaps and cargo types, leading to inadequate contact between the bag and cargo, which can result in insufficient stabilization and potential bag failure.
Innovation Solution
The introduction of dunnage bags with graduated inflation stripes, where the number, width, and appearance of stripes indicate the bag's width and the gap's width, allowing users to visually determine if the bag is safely braced for cargo stabilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a single marking line is used to indicate acceptable inflation pressure range, then manufacturing cost is reduced, but the information provided to users is limited and not clearly conveyable across multiple languages and cultures
Solution Approach 1:
The single marking line is segmented into multiple graduated stripes of different widths. Each stripe represents a specific inflation pressure range, allowing users to determine the appropriate pressure range by observing which stripe is visible. This segmentation provides more detailed information while maintaining visual simplicity.
Solution Approach 2:
The graduated stripes are designed with varying widths and positions that create visual differences analogous to color changes. The pattern of visible stripes changes with inflation pressure, providing intuitive visual feedback to users regardless of language or cultural background.
2Ease of operation
If a dunnage bag is used in a gap that is too large for the bag, then the bag can be inserted into the gap, but contact between the bag and cargo is reduced, reducing the ability to stabilize the cargo
Solution Approach 1:
The graduated stripes provide visual feedback to users about the relationship between bag size and gap size. By observing which stripes are visible during inflation, users can determine whether the bag is appropriately sized for the gap and whether sufficient contact is being achieved, allowing them to adjust their selection or installation approach.
3Reliability
If users must select the appropriate bag size for a particular gap and cargo type, then proper stabilization can be achieved, but it is difficult for users to correctly identify an appropriate size
Solution Approach 1:
The graduated stripes provide immediate visual feedback during the selection and inflation process. Users can observe which stripes are visible and use this information to determine whether the selected bag size is appropriate for the given gap and cargo type, eliminating the need for complex calculations or prior knowledge.
Solution Approach 2:
The dunnage bag performs self-identification of its appropriate application range through the graduated stripe markings. The bag itself provides the information needed for proper selection and use, without requiring external guides, charts, or complex decision-making processes.
Data Source
AI summary
A dunnage bag may have stripes on its sides that extend from a top edge to a bottom edge of the bag. When the bag is inflated, one or more of the stripes may be visible to a user viewing an end of the bag. A number and width of stripes visible to a user may indicate a width of the dunnage bag, a corresponding width of the gap within which the bag is positioned, and an amount the bag that is in contact with surfaces of adjacent cargo. The user may note an outermost visible and determine that the bag has a width within a range of widths associated with such outermost visible stripe, and whether such width allows for the bag to be used safely. If a stop stripe is visible, the gap is too wide for the bag.