Laminated glass:
Laminated glass is a composite glass product composed of two or more pieces of glass which are bonded firmly with transparent adhesive. Laminated glass is characterized by excellent shock resistance and penetration resistance. Generally speaking, when it is shocked and broken, it will not be penetrated by the external impactors, and the splinters will not fly away from the interlayer, and thus it can provide security. The commonly used interlayer films of laminated glass include PVB, SGP, EVA and PU.
Glass substrate, which may be float glass, tempered glass, antisolar glass, solar control glass, coated glass (LOW-E) patterned glass or self-cleaning glass, and a variety of colored adhesive interlayer film (PVB) compose of beautiful and multifunction flat or bent laminated glass. With the properties of excellent light control, heat insulation, acoustic insulation, noise reduction, ballistic protection, burglar prevention and resistance to static pressure, our products can be widely applied to curtain walls, balusters, doors, windows, shower bathrooms, awnings, daylighting roofs, staircases, counters, interior decoration, hotels, banks, airports, furniture, military facilities and other industries and fields.
Product Varieties:
Our Company deals with the production of the following laminated glass series: common laminated glass, tempered laminated glass, hot bent laminated glass, antisolar laminated glass, SGP laminated glass, colored laminated glass, silvered mirror laminated glass, patterned laminated glass, decorative painting embedded laminated glass, coated laminated glass (LOW-E), self-cleaning laminated glass, sound control laminated glass, fire-proof laminated glass, security laminated glass, armored laminated glass, privacy laminated glass and electromagnetic shielding laminated glass, etc.
Features:
Laminated glass is characterized by transparency, superior mechanical strength, heat resistance, moisture resistance and cold resistance. Compared with common glass, it has superior performance in safety, security, noise insulation and radiation resistance.
1, Extremely high safety and security:
With excellent performance in earthquake resistance, shock resistance, penetration resistance, wind pressure resistance and strong PVB adhesion, laminated glass will not result in bodily injury from splashing splinters when it is struck and broken due to external force; it can withstand the attack of burglar's tools, such as hammer and brick. It can improve the penetration resistance by increasing the thickness of the PVB film. Comparison of shock resistance parameters is shown as follows:
Table 1-1 Comparison of penetration resistance of laminated glass and other types of glass
Testing Items | Annealed glass | Tempered glass | Laminated glass |
Glass thickness/mm | 6 | 6 | 6.38 |
A 2260g steel ball fell freely from 4m high | Penetrated | Penetrated | Not penetrated |
A 227g steel ball fell freely from 12m high at 40 °C | Penetrated | Penetrated | Not penetrated |
A 227g steel ball fell freely from 10m high at -20°C | Penetrated | Penetrated | Not penetrated |
A 10kg human head model fell from 1.5m high | Penetrated | Penetrated | Not penetrated |
Table 1-2 Pendulum impact test results of laminated glass and other types of glass
Glass types | Status of breakage |
Laminated glass | Security breakage: it might be broken by a pendulum impact, but the glass remained whole, and the pieces and splinters adhered firmly to the interlayer. |
Annealed glass | Broken once get hit, the typical breakage status: bring many elongated sharp splinters |
Tempered glass | Unbroken unless at the huge impact: glass was broken and burst into numerous particles |
Wired glass | Similar with common annealed glass in the status of breakage |
Coated annealed glass | PET film on glass surface can provide additional protection; glass is fragile, and splinters flew toward the inside when the surface film was separated from the broken glass. |
Table 1-3 Penetration resistance of laminated glass with different film
Interlayer film | Structure | Maximum falling height (MBH) |
EVA | G/0.25mm/G | 0.70m |
G/0.40mm/G | 1.90m | |
G/0.25mm/PET/0.25mm/G | 3.50m | |
PVB | G/0.385mm/G | 2.75m |
G/0.76mm/G | 5.75m |
Note: 1. material G was 2.5mm Float glass; PET was 0.075mm.
2. Falling ball impact test (JISR 3212, testing the penetration of the glass when a 2260g ball with 82mm diameter falls on the center of 300mm×300mm laminated glass at 23°C).
2, Thermal Insulating Performance
Table 1-4 Thermal insulation of laminated glass with thermal insulation and energy efficient film
Color Performance | clear | green | blue | gray |
Visible light transmittance/% | 82.1 | 71 | 48.2 | 48.8 |
Visible light reflectance/% | 8.1 | 7.1 | 6.4 | 5.8 |
Solar transmittance/% | 60.4 | 49.9 | 34.6 | 32.6 |
Solar reflectance/% | 7.0 | 5.7 | 5.8 | 5.3 |
Solar heat gain coefficient (SHGC) | 0.69 | 0.61 | 0.50 | 0.49 |
Shading coefficient (SC) | 0.80 | 0.71 | 0.58 | 0.57 |
3, Acoustic Insulating Performance
Acoustic insulation is another prominent feature of laminated glass in addition to security and thermal insulation. In order to create a comfortable living environment, control of noise has become an important issue in modern architecture.
In general, human auditory system can automatically convert the 10 times acoustic intensity into twice acoustic intensity to create human actual feeling. The loudness of sound audible to the human ear is generally presented in decibels (dB). The sound less than 3dB is inaudible and 5 dB is audible to the human ear, and the maximum tolerable loudness of sound is 130dB. Laminated glass controls noise mainly through absorbing noise and degrading sound energy. Noise reduction is generally measured in weighted sound isolation. Table 1-5 shows the weighted sound isolation of various types of laminated glass.
Table 1-5 Weighted sound isolation of laminated glass
Glass composite/mm | 3+0.38+3 | 3+0.76+3 | 3+1.14+3 | 5+0.38+5 | 5+0.76+5 |
Weighted sound isolation/dB | 34 | 35 | 35 | 36 | 36 |
Glass composite/mm | 6+0.38+6 | 6+0.76+6 | 6+1.14+6 | 6+1.52+6 | 12+1.52+12 |
Weighted sound isolation/dB | 36 | 38 | 38 | 39 | 41 |
Factors affecting the weighted sound isolation of laminated glass include glass thickness and acoustic damping of the interlayer of laminated glass. Table 1-5 shows that, with the same glass substrate, the weighted sound isolation of laminated glass varies depending on the thickness of the PVB film, and the thicker the PVB film, the better the acoustic insulation.
Production Capacity:
· Maximum specification: 3000×15000mm;
· Minimum specification: 300 × 600mm
· PVB film thickness: 0.38mm, 0.76mm, 1.14mm and 1.52mm;
· Total thickness of laminated glass: 2.78~75mm;
· Output: 2.5 million m²/year
· Orders out of above specifications are negotiable.
Technical and quality standards:
Complying with Chinese GB 15763.3-2009; American ANSI Z97.1-2004; European EN12150-1; Australian standard AS/NZS 2208