Extruded Fabric Strands with Variable Properties Along Length
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Solution Overview
Problem
Fabric-based items formed from uniform materials often fail to meet design requirements due to the inability to vary properties along their lengths, making it difficult to create items with specific features such as conductivity, opacity, or stiffness.
Innovation Solution
The use of extruded strands with adjustable properties, such as varying diameters, conductivity, and material composition, which are intertwined to form fabric with different areas having distinct properties, allowing for the creation of items like wearable electronic devices with customized features.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If uniform fabric material is used, then manufacturing simplicity is maintained, but design flexibility and functional customization are limited
Solution Approach 1:
The patent applies local quality by varying the properties of strand segments along their lengths to create different fabric regions with distinct characteristics. Strand segments are formed with different material compositions, diameters, or stiffness values at different positions, enabling specific functional areas (such as conductive paths, radio-transparent regions, or structurally reinforced zones) within the fabric while maintaining overall manufacturing coherence through automated placement systems.
Solution Approach 2:
The patent segments the fabric structure into discrete strand segments with varying properties along their lengths. Each strand is divided into multiple segments that can have different material compositions, diameters, or mechanical properties. This segmentation allows the fabric to incorporate diverse functional regions (conductive, insulating, flexible, rigid) within a single continuous structure, resolving the contradiction between design flexibility and manufacturing simplicity.
2Adaptability or versatility
If strand properties are varied along lengths, then functional customization is enabled, but manufacturing precision requirements increase
Solution Approach 1:
The patent incorporates feedback mechanisms in the automated placement system to ensure precise positioning of strand segments with varying properties. Sensors and control systems monitor the placement process, detecting the position and orientation of each strand segment, and adjust placement parameters in real-time to achieve the required precision. This feedback loop enables the system to handle complex property variations while maintaining high manufacturing precision.
Solution Approach 2:
The patent replaces manual or simple mechanical placement methods with automated systems that use computational control to position strand segments. The automated placement system utilizes computer-controlled mechanisms to precisely position strands with varying properties according to digital design specifications, reducing the need for complex mechanical alignment procedures and improving overall placement precision.
3Manufacturing precision
If extrusion equipment adjustments are made, then strand property control is improved, but equipment complexity increases
Solution Approach 1:
The patent utilizes parameter changes in the extrusion process to control strand properties along their lengths. The extrusion equipment is configured to vary parameters such as material composition, temperature, pressure, or extrusion speed at different positions along the strand length. By programmatically adjusting these parameters, the system achieves precise control over strand properties (conductivity, diameter, stiffness) without requiring fundamentally different equipment for each property variation.
Solution Approach 2:
The patent designs the extrusion equipment to perform multiple functions through a single integrated system. The same extrusion apparatus can produce strands with varying properties by adjusting operational parameters rather than requiring separate equipment for different strand types. This multi-functionality reduces overall equipment complexity while maintaining the capability to produce diverse strand properties through parameter control.
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
Enables the production of fabric-based items with tailored properties, enhancing their functionality and design capabilities by ensuring precise placement of specific properties in desired areas, such as forming conductive paths or radio-transparent regions within electronic device housings.
Implementation Method 1
Adjustments may be made to the sources and to adjustable components in the extrusion equipment such as heaters
Data Source
AI summary
A fabric-based item may include fabric formed from intertwined strands of material. The strands of material may include extruded strands. Strand extrusion equipment may have electrically adjustable sources such as one or more sources of different polymers, dyes, particles, wire, and other elements to be incorporated into an extruded strand. The properties of the strands such as strand stiffness, strand diameter, conductivity, magnetic permeability, opacity, color, thermal conductivity, sand strength, may be varied along their lengths. Fabric formed from the strands may have different areas with different properties. Markers may be formed from particles at particular locations along the lengths of the strands, may be optical marker structures formed from circumferential rings of ink or other visible material on the strands, or may be other markers that can be sensed using electrical sensing, magnetic sensing, optical sensing, or other types of sensing when forming fabric from the strands.