Cushioning Sheet with Directional Strength for Packaging
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Solution Overview
Problem
Conventional cushioning materials for packaging become distorted in specific directions when subjected to external forces, leading to potential damage to the packaging box and its contents due to uneven strength distribution across layers.
Innovation Solution
A cushioning sheet with alternating layers of varying strengths in different directions, where one layer is stronger in the X2 direction and another in the X1 direction, preventing large-scale distortion and damage when compressed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If cushioning sheets with uniform structure are stacked, then the cushioning material can be simple in structure and easy to manufacture, but the cushioning material becomes distorted in specific directions when external force is applied
Solution Approach 1:
The cushioning sheet employs local quality by creating regions with different strength characteristics. Specifically, the sheet has a first region with a first strength and a second region with a second strength that is different from the first strength. This allows different parts of the sheet to respond differently to external forces, preventing uniform distortion while maintaining manufacturing simplicity.
Solution Approach 2:
The invention applies asymmetry by designing the cushioning sheet with non-uniform strength distribution. The first region and second region have asymmetric strength properties, where the second region's strength differs from the first region's strength. This asymmetric design prevents the sheet from distorting symmetrically in specific directions when external force is applied, thereby improving shape stability.
2Reliability
If cushioning sheets with varying strength directions are used, then the distortion of packaging box and contents is reduced, but the device complexity increases
Solution Approach 1:
The cushioning sheet uses local quality by defining specific first and second regions with different strength characteristics. This localized differentiation provides directional protection reliability without requiring complex multi-layer structures, as the strength variation is achieved within a single sheet design.
Solution Approach 2:
The invention applies parameter changes by modifying the strength parameter of the cushioning sheet in different regions. The first region has a first strength and the second region has a second strength, creating a gradient or stepped strength distribution. This parameter variation enhances protection reliability under external forces while maintaining a relatively simple single-sheet structure.
Data Source
AI summary
A cushioning sheet includes a first portion provided in a first area, and a second portion provided in a second area and having a strength stronger than that of the first portion.