Compact Bound Pad for Expandable Slit-Sheet Packaging
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Solution Overview
Problem
Conventional expandable slit-sheet packing materials are bulky and inconvenient for use in limited spaces, such as retail cash registers, due to the need for large devices and boxes that accommodate both slit-sheet and separator materials.
Innovation Solution
A compact bound pad of slit-sheet stock material interleaved with a separator sheet, bound along one edge, allowing for easy expansion and use in limited spaces, with the option to be secured to a surface for tension application and featuring a tear strip for easy removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional expandable slit-sheet packing materials are supplied in large devices or boxes to accommodate both slit-sheet and separator materials, then the materials can be properly presented and used, but the devices become large, heavy, and inconvenient for use in limited spaces
Solution Approach 1:
The patent transitions from three-dimensional bulky boxes to a two-dimensional flat pack configuration. The slit-sheet and separator materials are arranged in a collapsed, flat state that can be easily stored and transported, then expanded to three-dimensional form during use. This dimensional transformation resolves the contradiction by eliminating the need for large storage volume while maintaining full functionality.
Solution Approach 2:
The patent implements a nested structure where multiple layers of slit-sheet material and separator material are interleaved and bound together in a compact configuration. The materials are nested within each other in a flat pack format, allowing them to occupy minimal space until expansion is required. This nesting approach enables the system to be compact for storage yet provide sufficient material volume when needed.
2Extent of automation
If conventional devices include tensioning devices, cutting surfaces, motors, and blades to accommodate both sheet materials, then the materials can be automatically processed, but the device complexity increases significantly
Solution Approach 1:
The patent enables the user to manually perform functions that would otherwise require complex automated components. Users manually pull sheets from the bound pad, manually expand the slit-sheet material by stretching, and manually separate materials as needed. This self-service approach eliminates motors, blades, and complex tensioning devices while maintaining full functionality through simple user actions.
Solution Approach 2:
The patent extracts and removes unnecessary complex components from the system. Instead of including motors, blades, and automated tensioning devices, the design relies on simple manual operations. The bound pad structure itself provides the necessary material presentation without requiring additional mechanical subsystems, thereby reducing device complexity while preserving essential functionality.
3Adaptability or versatility
If large boxes are used to present two-ply construction of slit-sheet and separator materials, then all materials are contained and organized, but the boxes are heavy and inconvenient for locations with limited space
Solution Approach 1:
The patent transforms the packaging from a three-dimensional box to a two-dimensional flat pack. By collapsing the multi-layer material structure into a flat configuration, the volume and weight are dramatically reduced while maintaining all necessary materials. The flat pack can be easily positioned on or hung from flat surfaces, making it adaptable to limited spaces such as retail cash registers and small work areas.
Solution Approach 2:
The patent utilizes flexible, thin material construction for the bound pad itself, which serves as both the packaging and the functional material. The bound pad is designed to be lightweight and flexible, allowing it to conform to various surfaces and storage configurations. This thin-film approach eliminates the need for rigid, heavy boxes while providing adequate protection and organization for the materials.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Provides a convenient and space-efficient means of packaging materials that can be easily expanded and used for cushioning and void-filling, retaining usability of the surface area and allowing for easy packaging and retail display.
Implementation Method 1
The material expands in length and thickness while decreasing in width, to yield an increase in volume and comparable decrease in density
Implementation Method 2
the slits in adjacent rows are staggered such that the slits are configured to separate under tension applied in a direction across the length of the slits
Data Source
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AI summary
A bound pad presents a compact and convenient form of providing a two-ply construction that includes a slit-sheet stock material that may be positioned on or hung from a flat surface at the end-user's site. The bound pad includes sheets of slit-sheet stock material that are interleafed with non-die cut separator sheets. The sheets are bound together adjacent one edge, and may be weakened adjacent the bound edge to facilitate their removal from the bound pad during use. A user creates tension by pulling a free edge of the sheet of slit sheet material away from the bound edge, thereby expanding the slit material sheet to form an expanded packaging material. The user places an article on the bound pad, wraps the article in the sheets, and tears the sheets to remove the wrapped article from the bound pad.