Laminates and interlayers thereof and methods for the same

The laminate, featuring optically transparent sheets and an interlayer with luminophore-containing polymeric layers and structural support layers, addresses the challenge of reducing plasticizer use in LGUs by maintaining excellent optical and mechanical performance.

WO2025064259A1 Publication Date: 2025-03-27DELSTAR TECHNOLOGIES INC
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Patent Information

Application Number
PCT/US2024/045935
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2023-09-19
Filing Date
2024-09-10
Publication Date
2025-03-27

AI Technical Summary

Technical Problem

Conventional laminated glazing units (LGUs) rely on plasticized thermoplastic materials for adhesion and optical clarity, but recent trends aim to reduce plasticizer use due to various environmental and performance concerns.

Method used

A laminate comprising a first and second optically transparent sheet with an interlayer that includes structural support layers and polymeric layers, where at least one polymeric layer contains a luminophore and thermoplastic polyurethane, and the laminate is substantially free of plasticizers.

Benefits of technology

The laminate achieves improved optical and mechanical properties, including high light transmission, low haze, enhanced indentation resistance, and strong adhesion, while eliminating the need for plasticizers.

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Abstract

Laminates and interlayers thereof are provided. The laminates may include a first optically transparent sheet, a second optically transparent sheet, and an interlayer. The interlayer may be interposed between the first and second optically transparent sheets, and may couple the first and second optically transparent sheets with one another. The interlayer may include one or more structural support layers and one or more polymeric layers. A first polymeric layer of the one or more polymeric layers may include a luminophore. The interlayer may be substantially free of plasticizers.
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