Laminated Glass Interlayer Structure for Plate Misalignment Suppression
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Solution Overview
Problem
Existing laminated glass production methods face challenges with plate misalignment during the lamination process, particularly when multiple resin sheets are used, leading to inadequate prevention of misalignment and potential defects in the final product.
Innovation Solution
A laminated glass design featuring an adhesive interlayer with a combination of uniform and nonuniform regions, where the nonuniform region is strategically positioned at the periphery and includes fewer adhesive layers, and alternating layers with different glass transition points to enhance bonding and prevent misalignment, along with a method involving temporary bonding and heating of resin sheets to form a composite sheet before assembly with glass plates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple resin sheets are laminated to improve sound insulation performance, then sound insulation performance is improved, but plate misalignment occurs more frequently
Solution Approach 1:
The adhesive interlayer is segmented into multiple adhesive layers with different glass transition points. This segmentation allows each layer to perform specific functions: lower glass transition point layers provide initial bonding at lower temperatures, while higher glass transition point layers provide stable bonding at higher temperatures, preventing misalignment throughout the production process.
Solution Approach 2:
Different regions of the adhesive interlayer are assigned different properties. The patent creates a nonuniform region with fewer adhesive layers at the peripheral portion and a uniform region with multiple adhesive layers at the central portion. This local quality differentiation prevents misalignment at critical bonding areas while maintaining overall structural integrity.
2Strength
If resin sheets are bonded uniformly across the entire surface, then bonding strength is improved, but misalignment cannot be sufficiently prevented during the production process
Solution Approach 1:
The adhesive interlayer is designed with nonuniform regions at the periphery containing fewer adhesive layers, creating areas with different bonding characteristics. This local quality variation allows the central uniform region to provide strong bonding while the peripheral nonuniform region accommodates positioning adjustments and prevents misalignment during production.
Solution Approach 2:
Instead of uniform bonding across the entire adhesive interlayer, the patent applies adhesive layers partially - specifically creating regions with fewer layers at the periphery. This partial action approach provides sufficient bonding strength where needed while allowing flexibility for alignment correction in critical peripheral areas.
3Ease of manufacture
If the adhesive interlayer has a uniform structure throughout, then manufacturing simplicity is maintained, but plate misalignment cannot be effectively suppressed
Solution Approach 1:
The adhesive interlayer transitions from a uniform structure to a nonuniform structure with distinct regions. The nonuniform region at the periphery with fewer adhesive layers provides misalignment suppression functionality, while the uniform central region maintains ease of manufacture. This localized structural variation achieves both manufacturing simplicity and precision.
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
This approach effectively suppresses plate misalignment, improves adhesion, and maintains sound insulation properties while reducing the likelihood of air bubbles and enhancing the overall quality of the laminated glass.
Implementation Method 1
the adhesive interlayer comprises two or more adhesive layers and is partitioned into a uniform region and a nonuniform region
Implementation Method 2
a method involving temporary bonding and heating of resin sheets to form a composite sheet before assembly with glass plates
Data Source
AI summary
To provide a laminated glass having plate misalignment between glass plates suppressed.A laminated glass comprising a first glass plate, an adhesive interlayer and a second glass plate in this order,wherein the adhesive interlayer comprises two or more adhesive layers and is partitioned into a uniform region and a nonuniform region,the uniform region is a region positioned outside the nonuniform region in a plan view, containing only a portion in which the adhesive surface of any two adjacent adhesive layers is substantially in parallel with at least one of the first glass plate and the second glass plate, andthe nonuniform region is a region including a portion in which the adhesive surface is not in parallel with at least one of the first glass plate and the second glass plate.