Thermally Expandable Sheet Embossed Base Distension Height
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Solution Overview
Problem
Thermally expandable sheets struggle to achieve significant height difference in stereoscopic image formation due to the limitation of distension height when the thermally expansive layer is foamed and distended, as increasing the thickness of the thermally expansive layer results in a thicker overall sheet.
Innovation Solution
A thermally expandable sheet design where the base deforms into an embossed shape following the distension of the thermally expansive layer, allowing the base to contribute to the overall height, while maintaining a thinner thermally expansive layer, by forming an anchor layer and a thermally expansive layer on one side of the base, with the base being easily thermally deformable and the thermally expansive layer containing thermally expandable microcapsules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the thickness of the thermally expansive layer is increased to increase distension height, then the distension height is improved, but the overall sheet thickness is increased
Solution Approach 1:
The invention divides the sheet structure into distinct functional layers: a base sheet and a thermally expansive layer formed thereon. The base sheet provides structural support while the thermally expansive layer contains the expandable material. This segmentation allows the thermally expansive layer to be relatively thin while still achieving significant distension height when activated, as the base sheet deforms to accommodate the expansion without requiring the thermally expansive layer itself to be thick.
Solution Approach 2:
The invention utilizes the deformation of the base sheet in the vertical dimension to enhance distension height. When the thermally expansive layer expands, the base sheet deforms upward, adding to the overall height difference. This dimensional approach allows the system to achieve greater distension height without increasing the thickness of the thermally expansive layer, as the height is achieved through the combined effect of layer expansion and base sheet deformation.
2Quantity of substance
If the thickness of the thermally expansive layer is increased to provide more thermally expandable material, then the distension height is improved, but the sheet becomes thicker and less practical
Solution Approach 1:
The invention applies local quality by concentrating the thermally expandable material in a specific layer with optimized thickness rather than distributing it throughout a uniformly thick structure. The thermally expansive layer is formulated with sufficient expandable material to achieve the desired distension effect, while the base sheet provides the necessary structural support. This localized concentration of functional material allows adequate performance with minimal overall thickness.
Solution Approach 2:
The invention employs composite material structure consisting of a base sheet and a thermally expansive layer. The base sheet material provides mechanical strength and dimensional stability, while the thermally expansive layer contains the expandable particles or microcapsules embedded in a binder matrix. This composite approach allows each layer to be optimized for its specific function, enabling the thermally expansive layer to be thin yet effective, while the base sheet compensates for structural requirements without adding excessive thickness.
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
This design enhances the distension height of the thermally expandable sheet by allowing the base to deform and contribute to the overall height, achieving improved stereoscopic image formation with a thinner thermally expansive layer, thus maintaining a balance between distension height and sheet thickness.
Implementation Method 1
a thermally expansive layer that contains a thermally expandable material is formed on one side of a base
Implementation Method 2
forming a photothermal conversion layer converting light to heat on the thermally expandable sheet
Data Source
AI summary
A thermally expandable sheet in which a thermally expansive layer that contains a thermally expandable material is formed on one side of a base, and where the thermally expansive layer is distended, the base deforms following distension of the thermally expansive layer and the base deforms into an embossed shape.