Collagen-Polymer Composite Material to Replace Natural Leather
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Solution Overview
Problem
The production of natural leather is associated with significant environmental and social concerns, including high resource consumption, pollution, and animal welfare issues, as well as a decreasing availability of high-quality hides, necessitating the development of alternative materials that mimic leather's properties.
Innovation Solution
The creation of layered composite materials comprising collagen and a polymer matrix, which can be structured to resemble natural leather in appearance, feel, and mechanical properties, using natural or recombinant collagen combined with various polymers such as polyurethane, and incorporating additional layers for enhanced performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If natural leather is produced from animal skins, then the material provides desirable aesthetic and mechanical properties, but it requires raising and slaughtering livestock which consumes enormous amounts of feed, pastureland, water, and fossil fuels and contributes to pollution
Solution Approach 1:
The patent creates a synthetic leather material that copies the aesthetic and mechanical properties of natural leather through a multi-layer structure. The top layer uses collagen fibers embedded in a polymer matrix to replicate the fibrous structure and appearance of real leather, while the base layer provides structural support, together mimicking the performance characteristics of animal skin without requiring livestock farming
Solution Approach 2:
The invention employs composite materials by combining collagen (a natural protein) with synthetic polymer matrices (such as polyurethane or polyester) to create a layered structure. This composite approach allows the material to achieve leather-like properties through the synergistic combination of natural and synthetic components, eliminating the need for animal skins while maintaining aesthetic and mechanical performance
2Reliability
If traditional high quality hides are sourced to meet demand, then the aesthetic and mechanical properties are maintained, but the availability of such hides is decreasing
Solution Approach 1:
The synthetic leather material replicates the quality characteristics of traditional high-quality hides through careful selection of collagen sources and polymer matrices. The collagen-polymer composite structure mimics the fibrous architecture and mechanical behavior of premium animal leather, providing comparable durability, texture, and appearance without dependence on limited natural hide supplies
Solution Approach 2:
The invention allows for parameter optimization by adjusting the ratio of collagen to polymer, the type of polymer matrix used, and the processing conditions to achieve desired leather properties. This flexibility enables the material to be tuned for specific applications and ensures consistent quality regardless of variations in natural hide availability
3Ease of operation
If natural leather is used to manufacture goods, then the product has desirable look and feel, but the production process raises social concerns related to the treatment of animals
Solution Approach 1:
The patent develops a synthetic leather that copies the aesthetic qualities of natural leather including grain patterns, color, and surface texture. The collagen-based top layer provides a natural appearance and feel, while the polymer matrix ensures durability, replicating the sensory experience of real leather without the animal welfare issues associated with its production
4Object-affected harmful factors
If collagen is dissolved within a polymeric matrix material to create the layered structure, then the material provides sustainable alternative to natural leather, but the manufacturing process requires blending and processing of multiple components
Solution Approach 1:
The invention uses composite materials by combining collagen fibers with polymer matrices in a layered structure. The collagen provides the natural, biodegradable component that reduces environmental impact, while the polymer matrix provides structural integrity and processability, together creating a sustainable leather alternative that balances ecology with manufacturability
Solution Approach 2:
The synthetic leather is divided into distinct layers: a top collagen-polymer layer that provides the leather-like surface and a base layer that provides structural support. This segmentation allows each layer to be optimized for its specific function and facilitates a manufacturing process where layers are applied sequentially, making the multi-component system manageable despite its complexity
Data Source
AI summary
The present disclosure provides layered collagen materials comprising one or more collagen/polymer matrix layers. The collagen/polymer matrix layer(s) are formed of a collagen blended with one or more polymers. The collagen blended within the polymer(s) can be dissolved within the polymer(s). The one or more collagen/polymer matrix layers can be attached to a substrate layer, for example a fabric layer.