Backed Fabric Vane Stiffness for Architectural Coverings
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current fabric coverings for architectural openings, such as windows and doors, face challenges in maintaining a uniform and aesthetically pleasing appearance due to inherent physical properties like creases and puckering, which affect the operability and marketability of the products.
Innovation Solution
A fabric with a backing material is used to modify its stiffness, allowing it to bend more easily in one direction while maintaining flexibility in another, ensuring a consistent and smooth appearance when used in architectural opening coverings with movable vanes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a lightly woven fabric or fabric with high drape is used for vane construction, then aesthetic appearance and design versatility are improved, but the fabric lacks sufficient support for uniformity and flatness, resulting in creases, puckering, and contour irregularities
Solution Approach 1:
The patent applies composite materials by combining a fabric layer with a backing material layer to create a laminated structure. The fabric provides aesthetic appearance while the backing material provides structural support, stiffness, and dimensional stability. This composite construction enables the use of lightly woven or highly drapable fabrics that would otherwise lack the necessary support for uniform vane appearance, thereby resolving the contradiction between aesthetic versatility and shape uniformity.
Solution Approach 2:
The patent changes the physical parameters of the fabric by laminating it with a backing material that has specific stiffness and dimensional stability properties. This modification alters the mechanical properties of the original fabric, providing the necessary support for uniformity and flatness while preserving the fabric's aesthetic characteristics. The backing material acts as a structural reinforcement that transforms the fabric from a purely aesthetic element to a functional composite with controlled mechanical behavior.
2Shape
If fabric is used without backing material, then manufacturing simplicity is maintained, but the fabric presents poor support for uniformity and flatness, leading to creases and puckering
Solution Approach 1:
The patent introduces a composite material structure consisting of a fabric layer bonded to a backing material layer. This composite construction provides the necessary structural support for smooth contour appearance while maintaining relative manufacturing simplicity through standardized lamination processes. The backing material serves as a structural foundation that prevents creases and puckering, resolving the contradiction between shape uniformity and structural complexity.
3Strength
If conventional backing materials are used with fabric, then stiffness is improved, but the added weight and bulk may affect the operability and movement of movable vanes
Solution Approach 1:
The patent optimizes the parameters of the backing material to achieve the desired balance between stiffness and weight. By selecting backing materials with appropriate thickness, density, and mechanical properties, the patent provides sufficient stiffness to prevent fabric deformation while minimizing the added weight that would affect vane operability. This parameter optimization resolves the contradiction between strength enhancement and weight increase.
Data Source
AI summary
An architectural covering with an operable vane having a fabric backing is provided. The vane may include a vane fabric and a backing material connected to the vane fabric by a layer of adhesive. The backing material may increase a machine-direction stiffness of the vane while slightly affecting a cross-direction stiffness of the vane. As such, the vane may have increased stiffness in its machine direction while simultaneously remaining flexible in its cross direction.