Vehicle Window Panel Conductive Strip Low-Temperature Paste
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Solution Overview
Problem
Resin window panels in vehicles cannot form conductive layer strips at high temperatures, making existing darkening measures ineffective and visible, degrading the appearance.
Innovation Solution
A vehicle window panel with a thermoplastic resin body featuring conductive layer strips formed by applying a paste with silver powder and thermosetting resin at a low temperature, with narrow widths (0.05 mm to 0.1 mm) to be inconspicuous and functional for defogging and antenna purposes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a paste containing metal and its oxide is applied at high temperature (300°C to 800°C) to form a conductive layer strip on a window panel, then the conductive layer strip can be formed effectively, but the surface of a thermoplastic resin window panel melts at such high temperature, making the paste application impossible
Solution Approach 1:
The invention changes the temperature parameter from high temperature (300-800°C) to low temperature (below the softening point of thermoplastic resin) by using a thermosetting resin binder instead of traditional metal oxide paste, enabling paste application without melting the resin panel body while still forming a functional conductive layer strip
Solution Approach 2:
The invention uses a composite paste material consisting of silver powder as the main component and thermosetting resin as the binder, which combines the high conductivity of silver with the low-temperature curing properties of thermosetting resin, allowing the paste to be applied and cured at temperatures that do not melt thermoplastic resin panels
2Ease of manufacture
If darkening measures are implemented by adding metal and oxide to the paste, then the conductive layer strip can be concealed from outside the vehicle, but these measures cannot be used for resin window panels due to temperature constraints, making the layer strip visible and degrading appearance
Solution Approach 1:
The invention uses a narrow width conductive layer strip (0.05 mm to 0.1 mm) which is sufficient to provide the necessary electrical conductivity for defogging and antenna functions while being narrow enough to be inconspicuous from outside the vehicle, eliminating the need for darkening measures and preserving the appearance quality of the resin window panel
Solution Approach 2:
The invention changes the width parameter of the conductive layer strip to a narrow range (0.05 mm to 0.1 mm) that balances electrical functionality with aesthetic invisibility, allowing the strip to perform defogging and antenna functions while remaining inconspicuous without requiring additional darkening measures
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 allows for inconspicuous, effective defogging and defrosting while maintaining a good appearance by ensuring the layer strips are not visible from outside and function as both heating elements and antennas, applicable to various vehicle windows.
Implementation Method 1
The layer strip serves as an antenna and also serves to prevent fogging or frosting on the window portion or to melt frost on the window portion
Implementation Method 2
The layer strip serves as an antenna
Data Source
AI summary
A vehicle window panel includes a panel body having a plate shape and made of a resin material. The panel body integrally includes a window portion permitting light to pass therethrough. A conductive layer strip is formed on an interior surface of the window portion by applying a paste containing silver powder, as a main component, and thermosetting resin, as a binder, onto the interior surface. The layer strip has a width ranging from 0.05 mm to 0.1 mm, both inclusive.