Wedge-Shaped Laminated Glass Interlayer Film Moisture Gradient
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Laminated glass with a wedge-shaped intermediate film experiences low penetration resistance, particularly in certain areas, which can compromise its overall performance.
Innovation Solution
An intermediate film for laminated glass with a thinner first end and a thicker second end, featuring a thin region with a moisture content 1 to 3 times that of the thick region, and containing a polyvinyl acetal resin and plasticizer, is used. The film has a wedge-shaped cross-section with specific moisture content gradients to enhance adhesiveness and penetration resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a wedge-shaped intermediate film is used to suppress double images, then image quality is improved, but penetration resistance deteriorates
Solution Approach 1:
The patent applies local quality by creating different moisture content regions within the intermediate film. The thin region (0.1X to 0.2X from the first end) has a moisture content of 0.2% to 0.7% by weight, while the thick region (0.1X to 0.2X from the second end) has a lower moisture content. This local variation in moisture content optimizes both image quality and penetration resistance in different areas of the film.
Solution Approach 2:
The patent changes the moisture content parameter across different regions of the intermediate film. By controlling the moisture content to be 1 to 3 times higher in the thin region compared to the thick region, the film achieves optimal performance. The specific moisture content ranges (0.2% to 0.7% in thin region vs. lower in thick region) demonstrate parameter optimization to resolve the contradiction.
2Ease of manufacture
If the intermediate film has uniform moisture content, then manufacturing is simplified, but penetration resistance becomes insufficient in certain areas
Solution Approach 1:
The patent implements local quality by creating distinct moisture content zones within the intermediate film structure. The thin region (located 0.1X to 0.2X from the first end) is designed with higher moisture content (0.2% to 0.7% by weight) compared to the thick region (located 0.1X to 0.2X from the second end). This localized moisture distribution enhances penetration resistance where needed while maintaining manufacturability through controlled variation.
Data Source
Figure 1(a)~1(b)
Figure 2~4
Figure 5~6
AI summary
The present invention provides an intermediate film for laminated glass which allows, in a laminated glass, improvement in penetration resistance throughout the laminated glass, and a laminated glass including the intermediate film for laminated glass. In an intermediate film for laminated glass, a first end is thinner than a second end, and in the intermediate film for laminated glass, a thin region has a moisture content higher than a moisture content of the thick region; and a laminated glass includes a first component for laminated glass, a second component for laminated glass, and an intermediate film sandwiched between the first component for laminated glass and the second component for laminated glass.