Topline Tempered Glass is made from the thermal process by heating up the annealed glass surface at very high temperature near to its softening point, thereafter rapidly cooled by stream of uniform cold air onto the glass surface simultaneously. The end result gives additional strength and impact resistance to the heat treated glass. Topline Tempered Glass is about five times stronger than annealed glass of the same type and thickness. Once breakage occur, it shatters into multiple pieces of fragments, reducing the risk of serious injury. Topline Tempered Glass is also classified as SAFETY GLASS.
CHARACTERISTICS FEATURES
STRENGTH
Topline Tempered Glass is approximately four to five times stronger than normal annealed glass.
THERMAL STRESS RESISTANT
It has four to five times and above thermal shock resistant to withstand abrupt change of temperature without the glass being break.
SAFETY
Topline Tempered Glass is considered as safety glass. When it breaks, it shatters into multiple small fragment which does not cause serious bodily injuries.
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PRODUCT SPECIFICATIONS
| Thickness | : | 4mm – 19mm | Maximum Size | : | 2860mm x 6300mm |
| Minimum Size | : | 250mm x 400mm | |||
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ADDING VALUE ON TOPLINE TEMPERED GLASS
TOPLINE TEMPERED
HEAT-SOAKED
GLASS
Tempered Glass may occasionally shatter spontaneously for no apparent reason, eventhough
it has been installed for sometimes. This spontaneous breakage could due to the presence of nickel sulphide in the glass production, it is indeed difficult to ascertain the actual cause of the breakage.
However, TOPLINE HEAT-SOAK TEST is much recommended whereby the tempered glass in placed in the heating chamber to 290 deg. +/- 10 deg. for 2–8 hours so as to induce the glass with nickel sulphide to break spontaneously. This result helps to reduce risk of breakage on site.
TOPLINE HEAT
STRENGTHENED
GLASS
Method of manufacturing Topline Heat Strengthened Glass is similar to Tempered Glass, except that the Heat Strengthened glass is cooling less rapidly. Heat Strengthened residual surface compression level is within the range of 4,000psi to 7,000psi, and thus Topline Heat Strengthened glass is twice as strong and withholds stronger impact, compared to ordinary glasses. When the glass broke, the pattern is similar to ordinary glasses, but the fragments of Strengthened Glass lock together and remain in the frame. Other than that Topline Heat Strengthened glass offers good resistance to thermal stress, even though the resistance is less than Tempered Glass.
CHARACTERISTICS FEATURES
STRENGTH
Topline Heat Strengthened Glass is two times mechanically stronger than the annealed glass of the same size and thickness.
RESISTANCE TO THERMAL SHOCK
Most glass used on facade and window glazing have high energy absorption factor which may liable to cause glass breakage due to thermal shock. However, Topline Heat Strengthened Glass is able to withstand high temperature change.
LOW SURFACE DISTORTION
Due to its lower processing temperature/cooling pressure, Topline Heat Strengthened Glass has less optical distortions than tempered glass. Strengthening method improves the smoothness and better optical quality of processed glass.
LESS TENDENCY OF SPONTANEOUSLY BREAKAGE
“Spontaneously Breakage” occasionally happens in tempered glass due to the possibility presence of nickel sulphide. The Topline Heat Strengthened Glass is less sensitive to this problem.
APPLICATION For TOPLINE HEAT STRENGTHENED GLASS
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SUMMARY OF TOPLINE TEMPERED DOOR
