Decorative glass-Colorful PVB laminated glass

 Laminated glass,as mentioned in our product page, with different functional materials,laminated glass can be made with various functions,for example dichroic glass,bulletproof glass,hurricane proof glass,privacy smart switchable glass,etc.

Laminated glass decoration function is achieved with laminating organics inside for interior decoration,for exterior decoration ,colorful interlayers are laminated inside to make glass colorful,here we introduce several awesome projects with colorful laminated glass.

The most famous colorful PVB brand is Vanceva,Vanceva offers thousands color options which offers unlimited creative freedom to architects and designers,Vanceva also launched “world of color awards” to promote the most featured projects with Vanceva PVB products.

Case study 1:Rainbow glass cliff

China Glass bridge-vanceva glass floor -glass balustrade

The project is located in Beijing east lake harbor canyon,glass processed by Beijing Guanhua East.

The glass sky-walk was built in a height of 600 meters,total length 1200 meters with 128M color laminated glass glass bridge.

Glass Combination:

15 + RB71 +15 low iron heat soaked laminated glass for glass floor.

6 + RB41 +6 low iron heat soaked laminated glass for glass balcony.

glass bridge in Beijing-Vanceva laminated glass

The rainbow glass cliff attract over 500,000 visitors per year to overlooking canyon.

Meanwhile,In Southwest China and Southeast China,another 2 tourist attraction adopted similar design,rainbow glass steps and glass skywalk was built to attract more visitors.

Colorful PVB laminated glass for glass bridge in Southwest China

Vanceva PVB laminated glass stairs in China

Morn Comment:

Compared with traditional clear glass, The colorful glass stairs and glass steps does decrease the visitors’ sense of fear when walking on the skylight,people are more willing to take pictures on it.

Architects and designers should be aware that,these glass steps and sky-walk have limited size,glass width are always less than 1000mm and unit area below 1.5sqm,the design purpose and glass application don’t allow large crowds.

Whether it’s Vanceva and other China PVB brands,the colorful interlayer are ultimately PVB,whose shearing modulus and strength is much lower than SGP interlayer,especially in outdoor high temperature application.

PVB laminated glass can be applied in temporary short time stay,for large glass panels ,please always select high strength multi layer SGP structural laminated glass.

Case 2:OVO green square,Sydney

OVO green square in Sydney-colorful glass facade

OVO ,The 28-storey ellipsoid-shaped tower, located on the corner of Bourke and Ebsworth streets, will be home to more than 600 new residents.

The project facade is made with 1,800 panels in 134 different shapes and 17 different colours.

Glass Combination: 16,000SQM.

6 low iron with ceramic frit HS +12A+ 6mm low iron HS

6mm Low-iron HS+1.52mm Vanceva PVB+6mm Low-iron HS

OVO -insulated glass and laminated panels

Morn Comment:

The OVO glass colorful glass facade makes the building unique and become a new landmark in Sydney.Even though most colorful panels are insulated glass with colorful silk screen,Vanceva accounts little part of the facade,but the building does shows the color’s decoration function in glass facade.

Why the glass facade don’t use colorful laminated glass?

The biggest reason is glass costs.Colorful laminated glass panel price is 30-50% higher than clear laminated glass,which cause glass facade over-budget.

Even though architects and designer prefers to using multi colors in one projects,problem is,each package colorful PVB interlayers container 600-800 square meters,multi colors means multi raw materials purchasing and preparing,it’s difficult for glass factories to use the balance interlayer for other projects.So the more colors,the higher laminated glass price.

High rise building in Shanghai

Modern energy efficient glass facade always choose high performance double silver low-E,triple silver low-E on glass panels,even if the facade combination is laminated insulated glass,clear PVB always has the highest priority,If applying colorful PVB in the exterior laminated glass, low-E coating reflective colors (typically blue or silver grey color)  will cause color interference with PVB colors and made laminated glass lost its color characters.

Colorful laminated glass are always used for facade louvers or decoration works that don’t need energy efficiency.

Yangzheng nursery school

Yangzheng nursery school located in West China also use colorful lami for interior and exterior decoration works to fit the building education application.

Honorable Mention project with colorful glass louver

Honorable Mention project in Northern Ireland select multi colorful Vanceva laminated glass for the glass louvers.

Actually despite the strong decoration function of color laminated glass, the colorful interlayers also works to decrease glass solar shading coefficient,some laminated glass sheets use grey,bronze,green colors to decrease glass light transmittance with the lowest costs,these laminated sheets always use China local brands whose price is just 1/3 – 1/5 that of international brands.

colorful laminated glass options-Morn

In some cases,translucent and opaque PVB interlayers protect peoples privacy.The translucent interlayer allow light transmit the glass but the translucent don’t allow people see clearly,the glass is widely used in glass doors,shower doors,windows and glass facades.

translucent laminated glass windows&doors-Morn

Conclusion:

1. Colorful laminated glass price is generally higher than normal clear laminated,the more colors,the higher price.
2. Colorful laminated glass has strong decoration function,but cannot be used on same glass panels with low-E coatings.
3. Colorful laminated glass can help decrease glass SC ,work as solar barriers.
4. Translucent PVB &opaque pvb laminated glass protect people’s privacy.

Morn is your turnkey laminated glass manufacturer from China,welcome contact us for your next laminated glass requirement.

Download this article here:Decoration glass-Colorful PVB laminated glass

SGP laminated glass VS DG41 laminated glass

 SGP laminated glass is short for SentryGlas Plus interlayer laminated glass.It’s world known high performance interlayer developed by Dupont ,which was acquired by Kuraray in the end of 2014.

The features of SGP interlayer is high strength.SGP laminated glass bearing capability is 2 times that of PVB laminated glass,but the bending deflection of SGP laminated is only 1/4 of PVB laminated glass under the same thickness and load condition.
The tearing strength of SGP interlayer is 5 times higher than PVB film,even if the glass breaks,the SGP can also stick the glass and form a temporary structure while keeping small bending deformation,it can withstand a certain amount of load and whole piece laminated glass won’t fall or deform.

Features of SGP laminated glass:

1. It has high bonding ability to glass and strong tear strength, which can prevent the glass from breaking and scattering.
2. It has strong protective ability, can prevent natural disasters and human damage, and has sufficient resistance to strong winds, earthquakes, violence, theft, etc.
3. It can withstand the sudden impact of indoor personnel, prevent the glass from scattering or the whole out, and avoid indoor people and articles flying out and falling.
4. There is enough residual bearing capacity, and the whole piece will not fall off when the glass breaks and then bends.
5. SGP film has sufficient shear modulus to bend the entire section of the laminated glass, improve the bearing capacity and bending rigidity of the glass, and reduce the glass thickness and glass weight.
6. Can withstand the effects of ultraviolet light, water vapor and external climate change, long-term use will not appear yellowing discoloration.

Taking advantage of SGP laminated glass high strength ,it’s widely used in hurricane proof windows&doors,bulletproof glass,glass aquarium,oversized architectural glass, glass floors,glass skywalk and glass bridges worldwide.

GLASS BRIDGE IN CHINA

DG41,full name is Saflex DG structural interlayer,developed by Eastman Group,another world leading PVB manufacturer.The features of DG structural interlayer is,beside offering higher strengthen than normal PVB laminated glass,it is applicable to other Saflex brand PVB interlayer products ,which allows glass processors to use both normal products,for example RA,RB,Vanceva PVB interlayers and DG41 structural interlayer can be used in the same laminated glass,this can decrease the processing difficulty and increase the finished glass ratio,makes glass colorful and multi-functions.

For this reason,many designers appoint DG41 laminated glass in their project ,and sometimes even replace the SGP laminated glass,it’s not suggested to make this decision before confirming the glass strength and the local temperatures and climate.

Designers use some formula to calculate the laminated glass strength and usually ignore the interlayers function &strength,laminated effective thickness is used.With the development of new structural PVB&SGP interlayer, laminated effective thickness is no longer effective,and designers need to consider the function of this stiff interlayer function in the designing process.

What decided the interlayer strength?

The shear modulus describes the material’s response to shearing strains.A lateral deformation is observed in the object when a shear force is applied to it. The elastic coefficient is known as shear modulus of rigidity.  Shear modulus rigidity is the measurement of the rigidity of the object and it is obtained by measuring the ratio of shear stress of the object to the shear strain of the object.

Below show the shearing modulus of SGP interlayer and DG41:

shearing-modulus-pvb-vs-SGP-interlayer

 

shearing-modulus-pvb-vs-SGP-interlayer

 

As we can see,DG41 shearing storage modulus is very similar to Kuraray Extra stiff PVB interlayer,so we can see them same products.the shearing modulus decrease significantly and sharply once temperature over 30 degrees,and almost same as normal PVB interlayer when temperature going higher.

But how can we see the difference of different shearing modulus when the interlayer was applied into laminated glass? It’s quite easy, let’s check whether the laminated glass can be penetrated or not, and another important point ,is if the laminated glass can sustain certain weight after broken.

Mr Malvinder Singh Rooprai&Ingo Stelzer,conducted a test against the laminated glass because even though the FEM software can help calculate the glass pre-breakage strength,it cannot predict the post breakage strength ,even in the cases maintenance workers falling through or falling down.

The test was based on German Standard pr DIN 18008-6 covering PVB,EVA,SGP interlayer and stiff interlayer (Kuraray sextra stiff) ,and in 3 temperature conditions:subzero (-20 °C), room temperature (21 °C) and elevated temperatures of 50 °C,through this test,the scientists were able to know clearly which kind of laminated glass can work as the best materials used in overhead glazings,for example glass floor,glass bridges,glass skywalks etc.

1. Immediate Post Breakage Strength against “fall through”

Dropping a soft bag weighing 100 Kgs (typical weight of maintenance working along his tools and tackles) from a height of 1.2 mts at a test temperature of 50 ºC. The test method simulates potential loading from installation and/or maintenance workers in distress. The panels were conditioned at 50 °C for 1 hour before the test.

The test result shows that SGP laminated glass didn’t collapsed and prevented the soft bags falling down,while EVA ,normal PVB and stiff PVB laminated glass all collapsed as soon as the impactor struck,and failed to act as a barrier.

2.  Medium Duration Post Breakage Strength Testing (30 Minutes or more)

The Germany Standard DIN 18008–6, (Glass in Buildings – Design & Construction Rules – Additional requirements for walk-on glazings in case of maintenance procedures),is the only world existing standard to evaluate the glass sustain capability after breakage.

The standard requires a laminated glass construction to sustain the weight of 100 Kg for at least 30 minutes after breakage of top layer of glass.

First, the panel is subjected to an impact made by dropping a twin tyre impactor which weighs 50 Kg from

a height of 900 mm. This is followed by imposing a load of 100 Kg for 30 minutes on an area of 200 x 200 mm (Fig. 7). After breakage of the uppermost glass layer, the whole glazing element must stay on its supports for at least 30 minutes.

The test was aimed to know the ultimate post breakage performance limit so load was ramped up to 400 Kg in increments of 100 Kg, with a 15 minute time interval between each load increment.

1. At -20 °C, laminates made from the 4 interlayer candidates i.e 0.89 Ionomer, 1.52 mm Ionomer, 1.52 mm PVB, 1.52 Stiff PVB pass the post breakage strength requirements of the new German Standard pr DIN 18008 – 6.
2. At -20 °C, all 4 candidates had their ultimate strength more than 400 Kg as there was no collapse of the panel due to tearing of the interlayer at rotules.
3. At 21 °C, Ionomer and Stiff PVB laminates pass the post breakage strength requirements of DIN 18008–6 but PVB laminate does not.
4. At 21 °C, 0.89 mm & 1.52 mm Ionomer laminate had almost similar post breakage strength till about 45minutes from the breakage.
5. For tropical climate regions where the ambient temperature is more than 45 °C, Ionomer interlayer laminates meet and exceed the requirements of pr DIN 18008-6 Standard.

The test report can be get here:Test report

Please also contact us if you’re interested in the full test videos.

Based on above test,we can see that SGP laminated glass can work as good barrier against falling accident,and can sustain up to 400kgs weight for up to 45 minutes even if glass is broken.

While extra stiff PVB laminated glass,whether it’s Kuraray extra stiff,or DG41 interlayer,when under high temperature conditions,the laminated glass cannot protect people once accidents happens and cannot sustain much weight,this match the shearing modulus chart above.

DG41 ‘s shearing strength decrease sharply and almost same as normal PVB interlayer,which means its strength and sustain capability is almost same.So it’s not suggested to use DG41 and stiff PVB laminated glass in areas where the temperature is over 30 degrees,so interior application,and high tropical areas is perfect for extra stiff products.

SGP interlayer works in anywhere,whether it’s high temperature or low temperature.

 DG41 and SGP laminated glass Price.

1.52mm DG41 price is about USD45/SQM.

1.52mm SGP price is about USD54/SQM.

Let’s take 21.52mm low iron tempered laminated glass as example,the price with DG41 and SGP interlayer price is about USD95 and USD105/SQM.

The final price difference is decided by the interlayer difference.There’s almost no processing costs difference.

Morn is your turnkey laminated glass manufacturer and supplier in China,welcome contact us if you got any questions and any laminated glass requirement.

Download this article here:Why SGP laminated glass cannot be replaced by DG41 laminated glass