Resin-Layered Glass Plate Etching for Hail Impact Resistance
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Solution Overview
Problem
Existing resin layer-attached glass plates lack sufficient resistance to falling objects, such as hail, and there is a need for improved methods to produce such glass plates with enhanced durability.
Innovation Solution
A method involving etching and cleaning one surface of a glass plate followed by forming a resin layer without significantly increasing surface scratches, using chemically or physically strengthened glass, and controlling concave portion density and compressive stress profiles to enhance resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If etching is performed on the glass plate surface to reduce thickness and improve appearance, then the surface smoothness is improved, but the number of scratches and concave portions increases, reducing resistance to falling objects
Solution Approach 1:
The patent applies parameter changes by precisely controlling etching conditions (etching solution composition, temperature, time) to achieve the desired surface smoothness while limiting the increase in concave portions to 10 number/cm² or less, thus resolving the contradiction between surface quality and impact resistance
Solution Approach 2:
The patent performs preliminary strengthening treatment (chemical or physical strengthening) before etching to create a compressive stress profile that compensates for the potential weakening effect of scratches and concave portions, thereby maintaining resistance to falling objects even after etching
2Reliability
If a resin layer is formed on the etched surface to enhance protection, then the protective function is improved, but additional scratches may be introduced during the resin layer formation process
Solution Approach 1:
The patent performs preliminary cleaning and surface preparation before resin layer formation to ensure the etched surface is free from contaminants that could cause additional scratches during resin application, thereby maintaining manufacturing precision while achieving the desired protective function
Solution Approach 2:
The patent introduces a controlled intermediate environment during resin layer formation where the resin is applied in a manner that minimizes contact with potential scratch-inducing objects, thus protecting the etched surface from additional damage while still achieving the protective function
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 method produces a resin layer-attached glass plate with excellent resistance to falling objects by minimizing surface scratches and optimizing stress profiles, resulting in improved durability.
Implementation Method 1
performing etching and cleaning on at least one surface of a glass plate
Implementation Method 2
immersing the glass plate in an etching solution containing 5 mass % hydrogen fluoride, 15 mass % hydrogen chloride and 80 mass % water
Implementation Method 3
forming a resin layer on the one surface without substantially increasing scratches on the one surface
Implementation Method 4
the glass plate is of chemically strengthened glass or physically strengthened glass
Implementation Method 5
the glass plate is of chemically strengthened glass or physically strengthened glass
Data Source
AI summary
A method for producing a resin layer-attached glass plate by which the resin layer-attached glass plate is obtained with excellent resistance to falling objects. The method for producing a resin layer-attached glass plate includes performing etching and cleaning on at least one surface of a glass plate, and then, forming a resin layer on the one surface without substantially increasing scratches on the one surface.