Laminated Glass — PVB/SGP Safety Glass | Sound Insulation | MONTAG

Laminated glass is a high-performance safety laminated glass — a composite safety glass — engineered by bonding two or more glass sheets with specialized interlayers — PVB (Polyvinyl Butyral), SGP (SentryGlas Plus), or EVA (Ethylene-Vinyl Acetate) — under high temperature (120–150°C) and pressure (1.0–1.5MPa). When broken, fragments adhere firmly to the interlayer rather than splashing, maintaining structural integrity and preventing injury.

MONTAG supplies laminated glass in configurations from 3+3mm to 8+8mm, with custom sizes up to 3660×2440mm and curved surface capability. Sound insulation ≥35dB, UV blocking ≥99%. Certified to ANSI Z97.1 and EN 14449 standards. Sourced by construction contractors, automotive manufacturers, and commercial developers for safety-critical glazing applications.

Certified to applicable international standards — [view certificates](/about-us#certifications)

What Is Laminated Glass?

Laminated glass is a composite material that redefines safety and comfort through its multi-layer structure. Multiple glass layers are bonded tightly with high-quality interlayer films under controlled heat and pressure, forming a unified, resilient structure that delivers performance far beyond ordinary glass.

Three interlayer types are available, each suited to different requirements:

• PVB (Polyvinyl Butyral) — The most common interlayer. Excellent safety, sound insulation, and UV protection. Film thickness options: 0.38mm, 0.76mm, 1.14mm, 1.52mm.
• SGP (SentryGlas Plus) — High tear resistance and structural stiffness. Used in hurricane-resistant glazing, bomb blast protection, and structural glass applications where post-breakage retention is critical.
• EVA (Ethylene-Vinyl Acetate) — Excellent adhesion and moisture resistance. Often used for decorative laminated glass with embedded materials (fabric, metal mesh, digital prints).

For B2B project clients, our technical team provides safety grade evaluation and recommends the most cost-effective interlayer configuration based on your project's safety design scheme.

Performance Specifications

These specifications help B2B clients meet stringent safety compliance standards, reduce liability risk in public buildings, and lower long-term maintenance costs — particularly in high-traffic commercial spaces where post-breakage retention and acoustic performance are critical. Unlike monolithic tempered glass, safety laminated glass retains its structure after impact, meaning a single damaged pane can often remain in place until scheduled maintenance — reducing emergency callout costs and minimizing operational disruption.

Core Advantages

Safety & Security

When subjected to impact — accidental collision, severe weather, or intentional force — the glass may crack, but fragments adhere firmly to the interlayer. No sharp shards splash or fall. Even with a damaged surface, the glass maintains overall structural integrity, preventing penetration and providing anti-theft protection: intruders cannot easily break through the intact film layer. This makes laminated glass indispensable for public buildings, residential windows, storefronts, and security glazing.

Sound Insulation

The interlayer film acts as a damping layer, absorbing medium and high-frequency noise by converting sound energy into heat. Standard laminated glass achieves ≥35dB sound insulation — significantly reducing traffic noise, construction sounds, and indoor chatter. For projects near highways, airports, or busy commercial areas, specialized acoustic films boost performance to ≥40dB. Ideal for hotels, hospitals, and office buildings.

UV Protection

High-quality PVB interlayers block ≥99% of harmful ultraviolet rays. UV radiation causes fading, discoloration, and deterioration of indoor furniture, flooring, curtains, artworks, and upholstery. By filtering out nearly all UV rays, laminated glass preserves interior furnishings and reduces replacement costs — particularly valuable for luxury homes, art galleries, museums, and retail displays.

Customization & Design Flexibility

Laminated glass offers exceptional design flexibility:

• Unequal thickness structures — Configurations like 5+6 (5mm glass + film + 6mm glass) allow fine-tuning of strength, sound insulation, and safety performance
• Curved surface modeling — Fits architectural designs with rounded edges: domes, curved curtain walls, automotive windshields
• Large format — Max size 3660×2440mm for skyscraper curtain walls and sunroom roofs
• Decorative embedded materials — Fabric, plants, metal mesh, digital prints, or patterns laminated between glass layers for feature walls, partitions, and luxury furniture
• Laminated insulating glass — Combines laminated glass with insulating glass (sealed air/gas cavity) for integrated safety + sound + thermal insulation in one unit

For decorative laminated glass, EVA interlayer is recommended for optimal adhesion with embedded materials. See our tempered glass product page for substrate options, and our aluminum mirror product line for reflective applications.

Applications

• Architecture — Building doors and windows, curtain walls, sunrooms, glass railings, skylights
• Commercial spaces — Storefront windows, display cases, office partitions; protects merchandise and creates quiet environments
• Automotive — Windshields and side windows; ensures occupant safety in collisions
• Security glazing — Bank counters, jewelry stores, public transport hubs; anti-penetration protection
• High-end residential — Luxury homes, villas; UV protection for interiors, sound insulation for comfort
• Green buildings — Laminated insulating glass for energy-efficient designs combining safety, acoustics, and thermal performance

Project Examples:

Bank branch security glazing — 5+5 SGP laminated glass for counter screens and entry facades, anti-penetration protection meeting financial security standards.

Hotel acoustic windows — 4+4 PVB acoustic laminated glass for 300+ rooms near a major highway, ≥40dB noise reduction improving guest satisfaction scores.

Museum display cases — 6+6 UV-filtering laminated glass protecting artwork from fading, ≥99% UV block with optical clarity for artifact visibility.

B2B Order Information

FAQ

What is the difference between laminated glass and tempered glass?

Tempered glass is a single sheet of heat-treated safety glass — it is strong but shatters entirely when broken. Laminated glass bonds multiple glass sheets with an interlayer film — when broken, fragments stick to the film and the glass stays in place. Tempered glass offers higher strength per unit; laminated glass offers post-breakage retention, sound insulation, and UV protection. They can also be combined: tempered laminated glass uses tempered glass sheets as the laminated substrate for maximum performance.

Which interlayer should I choose — PVB, SGP, or EVA?

PVB is the standard choice for most architectural applications, offering excellent safety, sound insulation, and UV protection at competitive cost. SGP is recommended for high-security applications requiring high tear resistance and structural stiffness — hurricane zones, bomb blast protection, structural glass. EVA is ideal for decorative laminated glass with embedded materials (fabric, metal mesh, prints) due to its superior adhesion.

How much sound reduction does laminated glass provide?

Standard laminated glass with PVB interlayer achieves ≥35dB sound insulation for medium and high frequencies. With specialized acoustic interlayer films, performance reaches ≥40dB. For comparison, 35dB reduces normal conversation to a whisper on the other side. For projects near highways or airports, acoustic-grade laminated glass is recommended.

Can laminated glass be used for curved applications?

Yes. Laminated glass supports curved surface modeling for domes, curved curtain walls, automotive windshields, and rounded architectural features. Maximum flat size is 3660×2440mm; curved dimensions depend on radius and project specifications. Provide your drawings for technical evaluation.

What is laminated insulating glass?

Laminated insulating glass combines laminated glass with insulating glass in one unit. The laminated component provides safety, sound insulation, and UV protection; the sealed air or gas-filled cavity provides thermal insulation. This composite is ideal for high-end buildings and green construction where safety, acoustics, and energy efficiency are all required.

What certifications are available?

Our laminated glass complies with ANSI Z97.1 (US), EN 14449 (Europe), and CCC (China). Test reports and certificates are provided with each shipment. Products are suitable for commercial project acceptance in global markets.

Need a quote for your project?

Send us your drawings or specifications — our team responds within 24 hours with pricing, lead time, and technical recommendations.