Continuous Wrapping Sheet Structure for Shear-Resistant Pallet Stacks
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Solution Overview
Problem
Conventional palletization methods using pre-cut sandwiched sheets made of paper-based material fail to effectively prevent shearing of goods during transport, leading to potential damage and require excessive paper usage.
Innovation Solution
A pallet unit with a continuous wrapping sheet having both vertical and horizontal portions that covers parts of the blocks, providing a strong connection and stability in both horizontal and vertical directions, reducing shearing and minimizing material usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If pre-cut sandwiched sheets are used between blocks, then the resistance against deformation increases, but shearing strain cannot be avoided and significant paper material is consumed
Solution Approach 1:
The wrapping sheet transitions from horizontal sandwiching between blocks to a continuous path extending in both horizontal and vertical dimensions. The sheet wraps around multiple blocks vertically and horizontally, creating a three-dimensional stabilizing network that prevents shearing movements by distributing forces across multiple blocks simultaneously.
Solution Approach 2:
The wrapping sheet is applied as a continuous material along a continuous path rather than as separate pre-cut sheets. This continuity allows the sheet to maintain constant tension and provide uninterrupted support across the entire stack, effectively preventing shearing strain while reducing material waste from cutting operations.
2Strength
If pre-cut sandwiched sheets are used between blocks, then the resistance against deformation increases, but a significant amount of paper material is used
Solution Approach 1:
The wrapping sheet is applied as a continuous material along a continuous path rather than as separate pre-cut sheets. This continuity allows the sheet to maintain constant tension and provide uninterrupted support across the entire stack, effectively preventing shearing strain while reducing material waste from cutting operations.
Solution Approach 2:
Multiple individual sandwiched sheets are merged into a single continuous wrapping sheet that serves the function of multiple sheets simultaneously. The continuous sheet wraps around multiple blocks in a unified structure, consolidating the protective function into one material element and eliminating the need for numerous separate sheets.
3Stability of the object's composition
If a continuous wrapping sheet with vertical and horizontal portions is used, then shearing resistance and stability increase, but the device complexity increases
Solution Approach 1:
The wrapping sheet configuration is adapted to follow the dynamic structure of the block stack. The sheet dynamically adjusts its path to wrap around each block's contours, creating vertical and horizontal portions that respond to the stack's geometry. This dynamic adaptation provides optimal stability without requiring a rigid, complex predefined structure.
Solution Approach 2:
The wrapping sheet provides different local configurations (vertical portions between blocks, horizontal portions around blocks) tailored to specific local needs. Vertical portions prevent lateral shifting between adjacent blocks, while horizontal portions prevent vertical separation, creating locally optimized stabilization without overall system complexity.
Data Source
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AI summary
Pallet unit (1) for transporting objects comprising a pallet (10) and a stack (11) of object blocks (B1…B5) arranged on the pallet (10). The pallet unit (1) comprises a wrapping sheet (12) having vertical portions (V1… V12) and horizontal portions (h1…h15) covering parts of the blocks (B1…B5), said wrapping sheet (12) being laid along a continuous path and extending at least partly within the stack (11). Method for palletizing object blocks using said pallet unit (1).