Expanded Slit Sheet Cushioning with High-Density Cells
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Solution Overview
Problem
Existing expandable slit sheet papers face limitations in achieving both increased crush resistance and resiliency while maintaining a thin profile, as conventional approaches focus on widening the expanded slit sheet rather than optimizing slit pattern dimensions and using extensible paper.
Innovation Solution
The use of a novel slit pattern with reduced slit lengths and row spacings, combined with extensible paper, creates a higher cell density and alternating row expansion pattern, enhancing cushioning properties and reducing material thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional approaches widen the expanded slit sheet to increase crush resistance, then crush resistance is improved, but the profile thickness increases
Solution Approach 1:
The patent applies parameter changes by optimizing slit pattern dimensions (slit length, row spacing, column spacing) and utilizing extensible paper properties to achieve higher cell density. This allows the cushioning structure to provide adequate crush resistance through increased cell count per unit area rather than increasing overall thickness, thereby resolving the contradiction between strength and compactness.
Solution Approach 2:
The patent segments the cushioning structure into a high-density grid of smaller cells created by the optimized slit pattern. By increasing the number of segments (cells) within a compact volume, the structure achieves enhanced crush resistance through distributed load bearing across multiple cells, without requiring increased overall thickness.
2Ease of manufacture
If conventional approaches use larger slit dimensions, then ease of manufacture is improved, but cell density decreases reducing cushioning efficiency
Solution Approach 1:
The patent changes the parameters of the slit pattern by reducing slit length and row spacing to create higher cell density. This optimization increases the number of cells per square foot, improving cushioning efficiency. The extensible paper compensates for the reduced individual cell size, maintaining overall cushioning performance while achieving higher density.
3Reliability
If the slit pattern is optimized for higher cell density, then cushioning efficiency is improved, but material usage increases
Solution Approach 1:
The patent optimizes the slit pattern parameters (slit length, row spacing, column spacing) to achieve higher cell density with reduced material consumption. The extensible paper allows smaller, more numerous cells to provide equivalent or superior cushioning efficiency compared to larger cells, thereby improving reliability while reducing material usage through more efficient geometry.
Data Source
AI summary
In the preferred embodiments, the present invention provides substantially improved slit sheet cushioning products by advantageously combining novel paper properties with novel slit patterns for improved features and characteristics. In some illustrative and non-limiting example embodiments, cushioning products of the present invention can include, e.g., a novel slit sheet material in combination with extensible paper employed as, e.g., a cushioning pad or as cushioning within an envelope product, wherein the cushioning product can be substantially more resilient, but, yet, e.g., thinner for better utilization of space.