Ordinary or annealed glass is very weak under tension, but very strong under compression. When annealed glass breaks, it breaks into jagged and sharp-edged pieces which are very dangerous. To make glass strong, it is tempered. Tempered glass is a grade A safety glazing material as defined by international standards. When it breaks, it becomes small fragmented pieces called “cullets” which are less dangerous. Tempered glass is made by uniformly heating the glass just below its softening points then rapidly cooling it by a uniform blast of air to both its surfaces. This causes the outside of the glass into compression and the center into tension. It is this outside shell of compresive strength protecting the center tension that gives tempered glass its strength. However it is also due to this, that the tempered glass cannot be cut or drilled.

Limitations and Spesification

Benefits

• Tempered glass is up to 500% stronger than annealed glass.
• Tempered glass can withstand temperatures up to 300 C.
• When broken, tempered glass shatters into small harmless fragments.

Applications

Frameless glass doors, Hand-rails/ballustrade,
Elevator panels, Table tops, Glass showcases and
Automotive side windows.

Utilizing the latest Glasstech technology, combined with over 20 years of bending experience, Sinar Rasa Kencana is proud to present its line of Curved Tempered Glass.

Architects and designers are becoming ever bolder in expressing their visions. As the increasing complexity of contemporary design become the mainstream in today’s architecture, so are the demands for special shaped glass. Sinar Rasa Kencana challenges you to dream of new ways to use glass - in any shape of design. Now with the added advantage of tempered safety glass.

Sinar Rasa Kencana’s curved tempered glass is manufactured with Glasstech’s Advanced Bending and Tempering System. The glass produced meets international fracture standards while retaining excellent optical qualities. The shape is controlled by computer, which eliminates mould marks on the glass and provides accurate dimensional tolerances.

Size, Limitations and Spesifications

Applications

Spiral staircase, Curved glass railings, Shower screens, Display cases, Glass furniture, Shop fronts, Pool surrounds, Revolving doors, Partitions and Glass lifts.

Windows and glazing have been a considerable loss factor in the energy balance of the building, as single panes do not provide sufficient thermal insulation. A solution is to use insulating glass. An insulated glass unit consists of two or more pieces of glass separated by an air space. The space between the glass is hermetically sealed using aluminium spacers. This space contains air at atmospheric pressure which is kept dry by desiccant within this spacer.

K Value (Metric) / U Value (Imperial)

K Value (U Value) is the overall coefficient of heat transmission or heat flow. Lower K Values indicate better insulating performance. The tint or reflectivity of the glass do not have much effect on the K Value. In other words, 1 piece of 12mm tinted glass do not give better insulation than 1 piece of 12mm clear glass.

Shading Coeficient

Shading Coefficient is the ratio of the total amount of solar energy that passes through a piece of glass with respect to a 3 mm thick clear glass under the same conditions. Lower shading coefficient values indicate better performance in reducing heat gain. Usually, the shading coefficient is affected by the tint or reflectivity of the glass. The darker the glass, usually means the lower the shading coefficient (but has little effect on K Value). Using a clear double glazed unit reduces the K Value by at least 30% in comparison to a single glaze. This means that the IGU provides 30% better insulation, reducing the initial investment cost for the cooling or heating equipment and saving energy costs throughout the year.

Benefits

Thermal Insulation
The low heat conductivity of the dry air between the insulating glass cuts down the energy transfer through radiation while the small space between the panes limits the energy transfer through convection.

Acoustical Insulation
The air space also attenuate sound waves which results in greater sound insulation.

Applications

Commercial refrigerators, Control rooms, Broadcast rooms and Curtain walls for buildings

Air space available

(other thickness are available upon request).
(other colours are available upon request)

The timeless quality of glass, makes it the perfect medium for interior decorations. Contemporary designers are coming up with new and innovative uses for glass to achieve products that are elegant as well as long lasting. With the use of the latest CAD/CAM technology, Sinar Rasa Kencana challenges you to dream of new ways to use glass - in any shape or any design. From the functional glass furniture like table tops and display cases, to attention-grabbing bookcases and engraved partitions, Sinar Rasa Kencana will help you turn your into reality.

Silk Screen glass is made by using a ceramic glass paint to print graphics through a silkscreen mesh onto the glass. The colour is permanently fused into the glass by the tempering process. The result is a non-fading, weather-resistant decorative glass panel.

Limitations and Spesifications

Benefits

• Silk screen glass offers variety in colour and graphics which can be custom made to any design needs.
• Anti glare - reduces glare by reducing visible light transmission.
• Increase solar performance without increasing reflectance.
• Silk screen glass is tempered, so it can be used as safety glass.
• Durable - the glass colour is permanently fused into the glass. It is scratch and weatherresistant.

Applications

Architectural facade, Graphic glass for partition, Automotive glass and Furniture and art glass.

Laminated glass is also a safety glass that is made by laminating 2 or more sheets of glass with one or more flexible interlayer called PVB (Poly Vinyl Butyral). The glass and interlayer are bonded together by heat and pressure. When laminated glass breaks, the PVB holds the fragments together. This also acts as a barrier against penetration.

Limitations and Spesifications

Benefits

Safety
Laminated glass can resist penetration from accidental impact. Even if the glass is broken, it will not shatter but adhere to the PVB interlayer. This reduces the risks of personal injury or damage from falling fragments.

Security
Laminated glass offers great resistance to penetration when subjected to attack. Multiple layers of glass and PVB may be combined to provide resistance to bullets, bombs, burglary and forced entry.

Sound Control
Laminated glass is effective in controlling sound transmision due to the shear damping characteristics of the PV.

Ultra-violet Screening
The PVB acts as a filter against harmful ultra-violet (UV) light, protecting interior furnishing from fading effects of UV radiation.

Applications

Automotive Windshields, Burglar-resistant glass (shop-fronts or display cases), Bullet resistant glass (bank teller windows), skylights and glass floors.

There have been reported cases of spontaneous breakage of fully tempered glass. Although this is a rare phenomenon, many architects and contractors have become increasingly wary of this. Experts have determined that microscopic traces of nickel sulfide (NiS) inclusions within the glass are the reason for this spontaneous breakage.

Head Soak Test

The Heat Soak Test was derived to help find these nickel sulfide stones. While it’s not 100% successful, this destructive testing generally accelerates the aging process so that the glass with these stones will fail during the test, rather than after the installation of the building.

We follow the heat soak test to International Standards. The tempered glass is heat soaked at 300 C for a full 8 hours. During this time, glass which have nickel sulfide in them will break, and all of the surviving glass is considered acceptable for shipment. In general, 7-8% of the tempering strength will be lost in this process.

Heat Strengthened Glass

Heat Strengthened Glass is defined by ASTM Standards as having a surface compression of 3,500 to 7,500 psi with no requirements for edge compression. Fully tempered glass will have either a minimum surface compression of 69 MPa (10,000 psi) or an edge compression of not less than 67MPa (9,700 psi).

Limitations and Spesifications

Benefits

• Approximately twice the resistance to uniform static loading of annealed glass.
• Greater impact resistance.
• Able to withstand greater thermal stresses normally associated with solar exposure.
• Does not break spontaneously due to nickel sulfide inclusions.
• Less optical distorsions than fully tempered glass.

With the option of Ceramic-based and Magic-ink printing, digital printing on glass will be forever changed. SInar Rasa Kencana’s digital printing is capable of 2880 dpi resolution on any flat surface, making it one of the highest in the industry. With the latest revolutionary technology, we have the opportunity to radically extend the range of printable substrates, creating unlimited potential for a wide range of industry applications outside of glass.

Ceramic-printing offers the greatest adhesion while Magic-ink printing provides richer colours on par with UV printing performance. All inks used by SInar Rasa Kencana are enviromentally-friendly, non-toxic and recyclable. With Digital Printing by Sinar Rasa Kencana, there is now no limitations on your choice of printable materials. We guarantee excellent qualities that will more than exceed your expectations. Let us bring a new dimension to your creative imaginations!

Limitations and Spesifications