Three-Layer 3D Fabric Structure for Complete Light Shielding
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Solution Overview
Problem
Existing three-dimensional fabrics with a single-layer intermediate structure are inadequate for complete light shielding, limiting their application in environments requiring perfect light blocking, such as movie theaters and laboratories.
Innovation Solution
A three-dimensional fabric with a three-layered structure comprising a surface layer, a backing layer, and an intermediate layer, connected by first and second interconnection portions woven at the same angle, forming connecting warp threads that alternate and repeat to create a multi-layered structure for enhanced light-shielding capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a single-layer intermediate structure is used in three-dimensional fabric, then the structure is simple and easier to manufacture, but light shielding is incomplete and insufficient for applications requiring perfect light blocking
Solution Approach 1:
The intermediate layer is divided into multiple sub-layers (first intermediate layer and second intermediate layer) with different orientations and functions. Each sub-layer contributes to light blocking in different directions, achieving complete light shielding through segmented structure rather than a single dense layer.
Solution Approach 2:
The patent introduces a multi-layered structure in the intermediate portion, adding depth and complexity to the fabric construction. By stacking multiple intermediate layers with different warp and weft thread orientations, the fabric achieves three-dimensional light blocking capability that prevents light penetration from any angle.
2Strength
If adhesive or pressure-sensitive adhesive is used to adhere blade to fabrics in blinds, then the blade can be securely attached, but indoor environmental pollution occurs and adhesion deteriorates over time due to UV light exposure
Solution Approach 1:
The patent replaces chemical adhesion (adhesives) with mechanical interlocking through the three-dimensional fabric structure itself. The multi-layered intermediate portion creates a physical barrier and structural attachment mechanism that secures the blade without requiring chemical bonds, thereby eliminating adhesive-related pollution and UV deterioration issues.
Solution Approach 2:
The fabric structure itself provides the adhesion function through its three-dimensional configuration. The intermediate layers with their specific weave patterns and orientations create inherent mechanical attachment points that hold the blade in place, making the system self-sufficient without external adhesives.
3Shape
If sewing or fusion techniques are used to impart three-dimensional shapes to fabrics, then three-dimensional functionality is achieved, but additional processing steps and complexity are introduced
Solution Approach 1:
The patent combines the three-dimensional shape formation and light shielding functions into a single woven fabric structure. The intermediate layers are integrated during the weaving process itself, creating a unified fabric that inherently possesses both three-dimensional configuration and light blocking capability without requiring separate sewing or fusion steps.
Data Source
AI summary
A three-dimensional fabric with three-layered structure is provided. The three-dimensional fabric comprises a surface layer, a backing layer, an intermediate layer, a first interconnection portion for connecting the surface layer and the backing layer, and a second interconnection portion for connecting the intermediate layer and the backing layer. The three-dimensional fabric with three-layered structure can be woven on a single loom in a batch operation and undergo transformation between two-dimensional shape and three-dimensional shape. This fabric is applicable as materials for blinds with high light-shielding rate because intermediate portions have a multi-layered structure.