EVA (Ethylene Vinyl Acetate) – Flexibility for Decorative and Photovoltaic Glass

EVA interlayers are gaining popularity, especially in decorative and specialty laminated glass applications.

Processing Technology:

Laminated in vacuum furnaces, typically using heat and vacuum cycles.

Ideal for customized production and artistic applications.

Key Characteristics:

50. Outstanding Moisture Resistance: No strict humidity control required, simplifying storage and logistics.
50. Low-Temperature Lamination: Eliminates the need for autoclaves, accessible to small and medium-sized glass processors.
50. Crosslinking Reaction: Enhances weather resistance through chemical bonding during the curing process.
50. Good Adhesion to Various Substrates: Allows embedding of decorative elements like fabrics, printed films, and metals.
50. Lower Mechanical Strength: Compared to PVB and SGP, EVA films offer less structural strength.

Applications:

Decorative Glass: Gradient colors, embedded textiles, artistic designs.

Photovoltaic Modules: Preferred interlayer for thin-film and BIPV solar glass.

Moisture-Resistant Laminated Glass: Excellent for humid environments such as bathrooms and swimming pool enclosures.

Interior Glass Partitions and Floors: Combining beauty and functionality.

EVA’s ability to accommodate creative designs makes it a top choice for architects and designers seeking aesthetic flexibility in laminated glass.

SGP (Ionoplast) – The Ultimate Structural Interlayer

SGP interlayers (Structural Glass Polymer) provide a significant leap in laminated glass performance, especially for demanding environments.

Processing Technology:

Requires precise autoclave processing with strict quality control.

Typically used for premium, high-performance laminated glass products.

Key Characteristics:

50. Extreme Strength and Rigidity: 50 times stiffer and 5 times stronger than traditional PVB.
50. Exceptional Durability: Superior UV and moisture resistance with minimal yellowing over time.
50. Structural Integrity After Breakage: Maintains load-bearing capability even when cracked, critical for safety glazing.
50. Superior Optical Clarity: Light transmittance above 92%, ensuring pristine appearance for large glass panels.

Applications:

High-Rise Building Glazing: Structural glass facades, frameless balustrades.

Blast-Resistant and Bulletproof Glass: Ideal for banks, government buildings, and high-security facilities.

Hurricane-Resistant Laminated Glass: Suitable for coastal areas facing extreme weather.

Marine and Yacht Glass: Exceptional resistance to saltwater corrosion.

SGP's ability to combine strength, durability, and aesthetics makes it the preferred choice for high-end and structural glass projects.

PVB (Polyvinyl Butyral) – The Industry Standard for Safety Glass

PVB interlayers have been the go-to material in both architectural and automotive laminated glass for decades.

Processing Technology:

Requires pre-lamination followed by autoclave processing under high pressure and temperature.

Compatible with standard laminated glass production lines.

Key Characteristics:

50. High Optical Transparency: Light transmittance between 88%-92%, ensuring clear and vibrant visual performance.
50. Excellent Adhesion to Glass: Maintains structural integrity upon breakage, preventing shards from scattering.
50. Moderate Mechanical Strength: Suitable for most conventional building and automotive applications.
50. Soundproofing and UV Protection: Blocks up to 99% of harmful UV rays, preserving interior furnishings and offering acoustic insulation.
50. Moisture Sensitivity: Requires humidity-controlled storage to maintain adhesion properties.

Applications:

Architectural Laminated Glass: Curtain walls, railings, anti-fall glazing.

Automotive Windshields: Industry standard for car safety glass.

Acoustic Glass: Ideal for airports, libraries, and concert halls.

Solar Applications: Used in certain Building-Integrated Photovoltaic (BIPV) modules.

PVB remains highly cost-effective while balancing clarity, adhesion, and sound insulation, making it a staple in laminated glass production.

TPU (Thermoplastic Polyurethane) – Flexibility and Impact Resistance for Specialty Glass

TPU interlayers are carving out a niche in highly specialized glass applications where flexibility, impact absorption, and adaptability are crucial.

Processing Technology:

Lamination at lower temperatures compared to PVB and SGP.

Can be used independently or combined with other interlayers (PVB, EVA) for hybrid performance.

Key Characteristics:

50. Superior Flexibility: Ideal for flexible or foldable glass products.
50. High Impact Resistance: Excellent for applications where high kinetic energy impact is expected.
50. Outstanding Low-Temperature Performance: Maintains flexibility and toughness even in extremely cold environments.
50. Self-Healing Properties: Some TPU films can recover from minor surface scratches.

Applications:

Bulletproof Glass: Used in armored vehicles, secure facilities, and military applications.

Flexible Smart Display Glass: Perfect for foldable smartphones, tablets, and electronic displays.

Aerospace and Aviation Glass: Protects cockpit windows and sensitive instrumentation with high impact resistance.

TPU films open new possibilities for innovative laminated glass products that demand high-performance flexibility and durability.