Stem Cell-Derived Synthetic Leather with Layered Cellular Structure
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Solution Overview
Problem
Current methods for producing synthetic leather lack the ability to create a material that accurately mimics the structure and functionality of natural leather, particularly in terms of cellular differentiation and layer thickness, which affects its durability and appearance.
Innovation Solution
The method involves forming a layered structure by differentiating cells from induced pluripotent stem cells, specifically fibroblasts and keratinocytes, to create an artificial dermal and epidermal layer, which are then processed to achieve the thickness and texture of natural leather, and optionally tanned to enhance durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional methods are used to produce synthetic leather, then production is simpler and faster, but the material fails to accurately mimic the structure and functionality of natural leather
Solution Approach 1:
The patent divides the synthetic leather production into distinct segments: forming an artificial dermal layer with fibroblasts, forming an artificial epidermal layer with keratinocytes, and optionally adding a basement membrane layer. This segmentation allows each layer to be optimized independently for structural accuracy while maintaining a manageable production process.
Solution Approach 2:
The patent applies preliminary action by differentiating induced pluripotent stem cells into specific cell types (fibroblasts and keratinocytes) before assembling the layered structure. This pre-differentiation ensures that the correct cell types are available in advance, enabling accurate replication of natural leather structure without complex in-situ differentiation processes.
2Strength
If layer thickness is increased to improve durability, then the synthetic leather becomes more durable, but the production process becomes more complex
Solution Approach 1:
The patent controls layer thickness as a key parameter during the formation process. By adjusting cultivation time, cell density, and scaffold properties, the artificial dermal and epidermal layers achieve optimal thickness for durability without requiring complex post-processing or assembly of multiple sub-layers.
3Manufacturing precision
If cellular differentiation is enhanced to improve appearance, then the synthetic leather looks more like natural leather, but the manufacturing process becomes more complex
Solution Approach 1:
The patent employs self-service by utilizing the intrinsic differentiation capabilities of induced pluripotent stem cells. When provided with appropriate culture conditions and scaffolds, the cells automatically differentiate into fibroblasts and keratinocytes with characteristic morphology and function, eliminating the need for complex external differentiation protocols or repeated manual interventions.
Data Source
AI summary
Disclosed herein are synthetic leathers, artificial epidermal layers, artificial dermal layers, layered structures, products produced therefrom and methods of producing the same.