Laminated Glass Set Gradation Pattern Width Control
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Solution Overview
Problem
Conventional laminated glass with interlayer films exhibiting gradation patterns suffer from variations in the width of the gradation pattern, leading to impaired appearance designability when multiple glasses are arranged in line, due to partial misalignment and inconsistent color width.
Innovation Solution
A laminated glass set comprising multiple laminated glasses with an interlayer film that has a gradation pattern where visible light transmittance increases from one end to the other, with specific constraints on the maximum, minimum, and average distances of the gradation pattern to ensure uniformity and alignment, using a configuration that includes a first and second resin layer with a coloring agent, where the second resin layer forms the colored part and is embedded or surface-layered within the first resin layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
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 leading to misalignment when multiple glasses are arranged
Solution Approach 1:
The patent controls the extrusion parameters including temperature, pressure, and speed to maintain consistent gradation pattern width. By optimizing and stabilizing these processing parameters during extrusion molding, the variation in gradation pattern width is reduced, ensuring uniform appearance when multiple laminated glasses are arranged in a set.
Solution Approach 2:
The patent implements measurement and control mechanisms to monitor the gradation pattern width during production. By measuring the actual width and comparing it with target values, adjustments can be made to maintain consistent dimensions, reducing variation across multiple interlayer films.
2Productivity
If the interlayer film is cut at predetermined intervals to produce multiple laminated glasses, then productivity is improved, but variation in gradation pattern width becomes apparent causing appearance defects
Solution Approach 1:
The patent establishes strict control measures during the extrusion process before cutting occurs. By pre-controlling the gradation pattern width consistency during film formation, the subsequent cutting operation does not introduce additional variation, allowing high productivity through batch production while maintaining appearance quality.
3Ease of manufacture
If conventional extrusion molding is used without parameter control, then ease of manufacture is improved, but the width of the colored part varies significantly
Solution Approach 1:
The patent identifies and controls key extrusion parameters such as temperature, pressure, and extrusion speed within optimized ranges. This systematic parameter control maintains consistent colored part width while still using the relatively simple extrusion molding process, balancing ease of manufacture with manufacturing precision.
Data Source
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AI summary
Provided is a laminated glass set of a plurality of laminated glasses having excellent appearance designability. A laminated glass set according to the present invention is a set of a plurality of laminated glasses, each laminated glass includes an interlayer film part having a colored part, the colored part has a specific gradation part, the gradation part forms a tip of the colored part on the other end side of the interlayer film part, and when distance X from one end of the interlayer film part to a tip of the colored part on the other end side of the interlayer film part is measured in each of the plurality of laminated glasses, the laminated glass set satisfies (|Xmax - Xmin |)/Xave ≤ 0.1, or when distance Y of the colored part in the direction connecting one end and the other end of the interlayer film part is measured in each of the plurality of laminated glasses, the laminated glass set satisfies (|Ymax - Ymin|)/Yave ≤ 0.1.