3D Leather Shape via Elastic Tensioning and Bonding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The production of three-dimensional leather goods, such as bags, typically requires specific structural or frame parts, leading to complex production processes and additional costs, while also limiting the ability to easily deform the shape without returning to a predefined nominal shape.
Innovation Solution
A method involving two parts with distinct elasticity characteristics, where a structuring leather part provides mechanical strength and rigidity, and a deforming part with higher elasticity allows for bending deformations, eliminating the need for specific structural parts by using a tensioning and gluing process to achieve a self-supporting three-dimensional shape.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If structural or frame parts are used to produce three-dimensional leather goods, then the shape stability and mechanical strength are improved, but the production complexity and costs increase
Solution Approach 1:
The patent extracts and eliminates the structural or frame parts from the traditional leather goods construction. Instead of using separate rigid frames, the invention uses only flexible leather parts that self-structure through elastic deformation during assembly, removing the need for additional structural components and simplifying production.
Solution Approach 2:
The patent changes the physical parameters of the leather parts by utilizing their elastic properties. The leather parts are stretched during assembly to exceed their elastic limit, creating permanent deformations that form the three-dimensional shape without requiring rigid structural supports, thus reducing production complexity while maintaining strength.
2Stability of the object's composition
If structural or frame parts are used to maintain a predefined shape, then the shape stability is improved, but the flexibility and ease of deformation are reduced
Solution Approach 1:
The patent creates a dynamic balance between stability and adaptability. The leather parts are designed with specific elastic properties that allow them to be deformed easily during use (adaptability) while maintaining their three-dimensional shape through self-supporting elastic recovery (stability). The structure transitions from a rigid fixed state to a flexible usable state.
Solution Approach 2:
The patent effectively creates a composite structure by combining multiple flexible leather parts with different elastic characteristics. The assembly of these parts with distinct elasticity properties creates an overall structure that is both stable in its nominal shape and adaptable to deformation, without requiring rigid structural components.
3Strength
If multiple structural components are assembled to create three-dimensional shapes, then the structural integrity is improved, but the manufacturing simplicity is reduced
Solution Approach 1:
The patent merges the functions of structural support and shaping into the flexible leather parts themselves. Instead of assembling separate structural components and leather covers, the invention combines these functions into integrated leather parts that self-structure through elastic deformation, simplifying the manufacturing process while maintaining structural integrity.
Solution Approach 2:
The leather parts perform self-structuring through their own elastic properties during the assembly process. The parts automatically form the three-dimensional shape through controlled deformation and elastic recovery, eliminating the need for complex assembly procedures involving rigid frames and multiple structural components.
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 method enables the creation of a three-dimensional equilibrium shape with both holding and flexibility properties, allowing for easy deformation and return to the initial shape, reducing production complexity and costs, while maintaining the structural integrity of the leather goods.
Implementation Method 1
the part having the greatest elasticity characteristics will be called the 'deforming part'
Implementation Method 2
The bonding step comprises spraying an adhesive having characteristics of resistance to humidity, on the structuring part and on the deforming part
Data Source
Figure 1
Figure 2
AI summary
Method for producing a three-dimensional shape from two assembled parts having varying elastic properties, characterized in that it comprises the following steps: applying steady tension to the part, termed the deforming part (1), which has the highest elastic properties; bonding the part termed the structural part (2), which has the lowest elastic properties, to the tensioned deforming part; and removing the tension from the deforming part, which then applies stresses to the structural part, in such a way as to deform the latter and create the desired three-dimensional shape.