Nested Plastic Sheeting for Efficient Silage Unfolding
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Solution Overview
Problem
Existing methods for covering objects with multiple layers of plastic sheeting, such as silage, face difficulties in efficiently unfolding stacked sheets due to the challenge of grasping and separating the lateral edges, which can lead to damage and inefficient coverage.
Innovation Solution
The solution involves folding the second sheet into the first sheet, allowing the lateral edges of both sheets to be in close proximity or contact, enabling easy simultaneous unfolding by grasping and pulling the edges, thereby ensuring a layered cover is achieved efficiently without direct edge contact, and using the same or similar plastic materials like polyethylene for the sheets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If two sheets are stacked and rolled up for compact storage, then storage efficiency and transport ease are improved, but simultaneous unfolding becomes difficult due to inability to grasp lateral edges of both sheets
Solution Approach 1:
The second sheet is folded into the first sheet in a nested configuration, with the second sheet positioned inside the folds of the first sheet. This nesting allows both sheets to be stored compactly in a single rolled bundle while maintaining separate lateral edges that can be grasped independently for simultaneous unfolding.
Solution Approach 2:
The lateral edges of the two sheets are kept separate and distinct rather than bonded together, allowing each sheet to be independently grasped and unfolded. The sheets are segmented in terms of edge accessibility while remaining connected through the folding structure.
2Reliability
If a second thicker sheet is arranged on top of a first thinner sheet to achieve airtight coverage, then coverage effectiveness is improved, but the first sheet is damaged due to user needing to step on it to unfold the second sheet
Solution Approach 1:
The sheets are pre-folded and nested in a specific configuration before use, with the second sheet already positioned inside the folds of the first sheet. This preliminary arrangement eliminates the need for users to step on the first sheet during unfolding, as both sheets can be simultaneously unfolded by grasping their lateral edges.
3Volume of moving object
If two sheets are folded along lengthwise folding lines for compact storage, then storage compactness is improved, but the complexity of simultaneously unfolding both sheets increases
Solution Approach 1:
The folding configuration creates an asymmetric nested structure where the second sheet is folded into the first sheet in a specific orientation. This asymmetric nesting simplifies the unfolding process by providing clear lateral edges for grasping, reducing the complexity of simultaneously unfolding both sheets compared to symmetric or random folding arrangements.
Data Source
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AI summary
Combination of plastic sheeting for covering an object, such as silage, with at least two layers of sheeting, comprising a first folded sheet and a second folded sheet, wherein the second sheet is folded into said first sheet and wherein said second sheet is at least partially enclosed by said first sheet and wherein the sheets have first and second lateral edges, wherein seen in a cross section, at least the first lateral edges of the two sheets extend in close proximity to each other in the folded combination of sheets.