Profiled Insulation for Signal Integrity in Copper Cables
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing cable insulation methods for copper cables face challenges in minimizing signal degradation and fire safety concerns while reducing the amount of dielectric material, with prior methods either increasing complexity or resulting in inconsistent production of profiled insulation.
Innovation Solution
A profiled insulation with alternating crests and crevasses is developed, using a modified extrusion die to maintain impedance between twisted copper conductors with reduced insulation, ensuring consistent and cost-effective production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dielectric material is used to insulate copper conductors, then impedance between conductors is maintained, but signal degradation and fire safety issues occur
Solution Approach 1:
The patent uses foamed dielectric insulation material with air pockets distributed throughout the insulation structure. The air-filled pores reduce the overall dielectric constant of the insulation material, thereby reducing signal degradation and improving fire safety while maintaining adequate impedance between conductors through controlled foam density and distribution.
Solution Approach 2:
The patent combines solid dielectric material with air voids to create a composite insulation structure. This composite approach allows optimization of electrical properties by controlling the ratio and distribution of solid material and air pockets, achieving reduced signal degradation while maintaining necessary impedance characteristics.
2Object-affected harmful factors
If foamed dielectric insulation is used to reduce dielectric material, then signal degradation is reduced, but manufacturing complexity increases
Solution Approach 1:
The patent incorporates blowing agents into the dielectric material formulation before extrusion, so that the foaming occurs during the extrusion process itself rather than requiring separate foaming equipment or post-processing steps. This preliminary preparation of the material allows standard extrusion equipment to produce foamed insulation, reducing manufacturing complexity.
Solution Approach 2:
The patent controls the foam structure by adjusting parameters such as blowing agent concentration, extrusion temperature, and cooling rate during manufacturing. By optimizing these parameters, consistent foamed insulation can be produced using modified but not overly complex extrusion processes, balancing manufacturing feasibility with signal degradation reduction.
3Quantity of substance
If profiled insulation with contoured shapes is used to reduce insulation material, then dielectric material usage is reduced, but manufacturing consistency deteriorates
Solution Approach 1:
The patent applies profiled insulation geometry selectively at specific locations along the conductor, such as creating ridges or grooves only in certain zones rather than complex contours along the entire length. This localized profiling reduces dielectric material usage at critical areas while maintaining manufacturing consistency in regions where standard circular insulation is produced.
Solution Approach 2:
The patent divides the insulation structure into distinct segments or zones, with profiled sections at intervals rather than continuous complex contours. This segmentation simplifies the extrusion die design and allows each segment to be manufactured with consistent geometry, improving overall manufacturing precision while still reducing total material usage compared to solid insulation.
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
The solution achieves optimal impedance and reduced insulation usage, maintaining signal strength and clarity while ensuring consistent electrical properties and cost-effectiveness in cable manufacturing.
Implementation Method 1
a profiled insulation and method for making the same
Implementation Method 2
The insulation has a plurality of alternating crests and crevasses
Data Source
AI summary
A wire has a conductor and an insulation extruded onto the conductor. The insulation has a plurality of alternating crests and crevasses, where the ratio of the distance from the conductor to a top of the crest to the distance from the conductor to a lowest point in the adjacent crevasse is at least 1.1 and where the ratio is sustained within a tolerance variation of not more than 15% along the length of the wire.