Laminated Glass Interlayer Film for Unified Privacy Tinting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Laminated glass designs face challenges in achieving a unified appearance and enhanced designability, particularly in roof glass and rear-roof integrated glass, where existing interlayer films either have a uniform opaque color or visible gradations that disrupt the cohesive look.
Innovation Solution
An interlayer film with a colored region that maintains a visible light transmittance of 1% to 50% across 95% of its area, featuring distinct non-gradation and gradation regions, and incorporating heat shielding particles to ensure a uniform appearance and improved privacy protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an opaque layer is used to achieve privacy protectability, then privacy protection is improved, but appearance designability deteriorates because the whole surface has the same color
Solution Approach 1:
The patent applies local quality by creating a colored region with specific visible light transmittance (1-50%) that covers 95% or more of the interlayer film area, while allowing different regions to have different transmittance characteristics. This enables privacy protection in specific areas without uniformly coloring the entire glass surface, thus maintaining appearance designability.
2Adaptability or versatility
If a gradation pattern is used to enhance appearance designability, then appearance designability is improved, but unity of appearance deteriorates because colored and uncolored regions are visible clearly differentially
Solution Approach 1:
The patent applies parameter changes by precisely controlling the visible light transmittance parameter within the range of 1-50% for the colored region, and by controlling the absolute value of difference between transmittance at different positions to be 2-45%. This creates a subtle gradation that enhances appearance designability while maintaining visual unity, avoiding harsh transitions.
3Reliability
If the visible light transmittance is made low for privacy protection, then privacy protection is improved, but light transmission deteriorates
Solution Approach 1:
The patent applies parameter changes by optimizing the visible light transmittance to be within 1-50%, balancing privacy protection and light transmission. This parameter range allows sufficient light to pass through for illumination while maintaining obscuration for privacy, avoiding excessive darkness.
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 interlayer film achieves a laminated glass with excellent unity of appearance and designability, while maintaining privacy protection through controlled visible light transmittance and heat shielding properties.
Implementation Method 1
the interlayer film having a colored region where visible light transmittance of a laminated glass X is 1% or more and 50% or less
Data Source
AI summary
Provided is an interlayer film for a laminated glass capable of obtaining laminated glass having excellent unity of appearance. An interlayer film for a laminated glass according to the present invention has one end, and the other end, and when the interlayer film is arranged between two sheets of clear glass conforming to JIS R3202:1996 to obtain a laminated glass X, the interlayer film has a colored region where visible light transmittance of the laminated glass X is 1% to 50%, the colored region has a plane area of 95% or more in 100% of a total plane area of the interlayer film, the laminated glass X has a first visible light transmittance at a position of 5 cm from the one end toward the other end of the interlayer film, and a second visible light transmittance at a position of 5 cm from the other end toward the one end of the interlayer film, the first visible light transmittance being smaller than the second visible light transmittance, the first visible light transmittance is 1% to 20%, the second visible light transmittance is 5% to 50%, and an absolute value of difference between the first visible light transmittance and the second visible light transmittance is 2% to 45%.