Laminated Glass Interlayer Film With Uniform Gradation Width
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Solution Overview
Problem
Conventional interlayer films for laminated glass with gradation patterns suffer from variations in the width of the gradation pattern, leading to impaired appearance designability, especially when multiple laminated glasses are arranged in line, due to partial misalignment and inconsistent color width.
Innovation Solution
An interlayer film with a length of 30 m or more, featuring a colored part with a gradation pattern where visible light transmittance increases from one end to the other, ensuring a consistent tip formation and controlled variation in distance measurements, satisfying specific formulas to maintain uniformity and alignment across multiple laminated glasses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If extrusion molding is used to form interlayer films with gradation patterns, then appearance designability is improved, but variation in the width of the gradation pattern occurs along the lengthwise direction
Solution Approach 1:
The patent controls the width of the colored part by adjusting extrusion parameters and maintaining specific temperature conditions during the extrusion process, ensuring that the width variation along the lengthwise direction remains within ±5mm while preserving the gradation pattern's aesthetic appearance
Solution Approach 2:
The patent implements width measurement at multiple positions along the lengthwise direction and uses this feedback information to adjust the extrusion process, ensuring consistent gradation pattern width across the entire interlayer film length
2Productivity
If multiple laminated glasses are arranged in line using conventional interlayer films, then productivity is improved, but appearance designability is impaired due to misalignment of gradation patterns
Solution Approach 1:
The patent measures the width of the colored part at multiple positions along the lengthwise direction and uses this feedback to ensure consistent width within ±5mm, enabling accurate alignment when multiple laminated glasses are arranged in line and maintaining uniform appearance across the entire structure
Solution Approach 2:
The patent establishes predetermined width specifications and measurement protocols before production, allowing for consistent gradation pattern dimensions that facilitate precise alignment when multiple laminated glasses are assembled together, thereby maintaining appearance designability while enabling high-volume production
Data Source
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AI summary
Provided is an interlayer film for laminated glass capable of obtaining a plurality of laminated glasses having excellent appearance designability. The interlayer film for laminated glass according to the present invention has a length of 30 m or more in the lengthwise direction, and has a colored part, and the colored part has a specific gradation part, and the gradation part forms a tip of the colored part on the other end side in the widthwise direction, and when distance X from one end in the widthwise direction to a tip of the colored part on the other end side is measured at 1.5 m intervals in the lengthwise direction, (| Xmax - Xmin |) /Xave ≤ 0.1 is satisfied, or when distance Y from tip of the colored part on one end side in the widthwise direction to a tip of the colored part on the other end side is measured at 1.5 m intervals in the lengthwise direction, (|Ymax - Ymin | )/Yave ≤ 0.1 is satisfied.