Glass Resin Laminate Impact Resistance via Intermediate Sheet
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Solution Overview
Problem
Glass resin laminates using thin glass sheets are prone to breakage under local external impact due to insufficient strength.
Innovation Solution
Incorporating an intermediate sheet with a higher tensile modulus than the adhesive layer into the adhesive layer between the glass sheet and the resin plate, which absorbs and distributes the impact, preventing local deformation and breakage of the glass sheet.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If thin glass sheets are used to reduce weight, then weight reduction is achieved, but strength and resistance to local impact are insufficient
Solution Approach 1:
The invention creates a composite laminate structure combining thin glass sheets with a resin plate and adhesive layers. This composite construction maintains the weight advantage of thin glass while gaining the strength and impact resistance of the resin core, resolving the contradiction between lightweight and strong.
Solution Approach 2:
The adhesive layer is designed with specific thickness constraints (smaller than the resin plate thickness) to provide localized support where needed. This localized quality enhancement strengthens the thin glass sheet at critical points without adding overall weight.
2Strength
If the thickness of the adhesive layer is increased to improve impact absorption, then impact absorption improves, but the total thickness becomes unduly larger than the resin plate
Solution Approach 1:
The invention optimizes the adhesive layer thickness parameter to be smaller than the resin plate thickness. This parameter change ensures adequate impact absorption while maintaining a balanced overall thickness, preventing the laminate from becoming unduly thick.
Solution Approach 2:
The composite structure distributes impact forces across multiple layers (glass sheet, adhesive layer, resin plate), allowing each layer to contribute to impact absorption without requiring any single layer to be excessively thick.
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 solution effectively suppresses breakage of the glass sheet by distributing external impact through the adhesive layer, enhancing the laminate's durability and flexibility, allowing it to withstand various applications without breaking.
Implementation Method 1
when local external impact is applied to the glass sheet on the side where the intermediate sheet is interposed, local deformation of the adhesive layer is prevented by the reinforcing effect of the intermediate sheet having a tensile modulus larger than that of the adhesive layer. As a result, the external impact applied to the glass sheet propagates through the entire surface of the adhesive layer to be absorbed by the entirety of the adhesive layer.
Implementation Method 2
a glass resin laminate obtained by laminating glass sheets on both surfaces of a resin plate through intermediation of adhesive layers to integrate the sheets and the plate
Data Source
AI summary
Provided is a glass resin laminate (1) obtained laminating glass sheets (5, 6) on both surfaces of a resin, plate (2) through intermediation of adhesive layers (3, 4) to integrate the plate and the sheets, in which an intermediate sheet (7) is interposed in the adhesive layer (3) on one surface side of the resin plate (2). In addition, on the side where the intermediate sheet (7) is interposed, the glass sheet (5) has a thickness of: from 0.01 mm to 1 mm, and the thickness of the adhesive layer (3) excluding the intermediate sheet (7) is smaller than the thickness of the resin plate (2). In addition, the intermediate sheet (7) has a tensile modulus larger than the tensile modulus of the adhesive layer (3).