Laminated glass is two or more panes bonded to a plastic interlayer under heat and pressure. Its defining property is what happens after breakage: the fragments stay stuck to the interlayer, so the pane cracks but remains in the opening. Almost every specification decision about laminated glass is really a decision about which interlayer to use.
Construction
Choosing the interlayer
Polyvinyl butyral is the default. It retains fragments reliably, blocks most ultraviolet light and is the most economical option. For ordinary vision glazing and overhead panels it is usually all that is required.
A softer damping formulation that converts vibration into heat rather than passing it on. It performs noticeably better than standard PVB across the speech and traffic frequency range, and it is what separates genuine acoustic glass from ordinary laminated glass of the same thickness.
Considerably stiffer and stronger than PVB, and far more resistant to moisture at exposed edges. It is the choice where the laminate has to carry structural load, such as a free-standing balustrade, and for marine glazing where salt exposure would attack a PVB edge over time.
Security and ballistic build-ups are multi-ply rather than simply thicker, and the number and type of interlayers does more for performance than raw glass thickness. That is why security glazing is specified against a threat classification and not against a millimetre figure.
Applications
Where it is required
A balustrade is a life-safety element, so the glass must remain a barrier after it breaks. Toughened laminated is the standard specification; toughened glass alone empties the opening at the moment you most need it not to.
Rooflights, canopies and anything glazed above people must be laminated so fragments are retained rather than falling. This is not a preference, it is what the position demands.
An acoustic laminated pane inside an asymmetric insulated unit is the standard answer to traffic noise. Asymmetry stops the two panes resonating together; the interlayer damps what gets through.
The interlayer blocks the large majority of ultraviolet light, which is why laminated glass is specified for shopfronts, display cases and rooms where fabrics or artwork would otherwise fade.
The TPRS product
TPRS Lamisafe
TPRS Lamisafe is a QNL-certified solution with high-performance laminated glass for strength, safety, and versatility. Our advanced lamination capabilities include utilizing PVB, SGP, or EVA interlayers in double or multi-layer formats to meet various structural and aesthetic demands. TPRS Lamisafe features upgraded technology, which includes dust-free clean rooms and automated interlayer processing, ensuring outstanding quality and clarity.
Sectors
Where TPRS supplies this
Glass Insights
FAQs
Laminated glass is two or more panes of glass bonded to a plastic interlayer under heat and pressure. When it breaks, the interlayer holds the fragments in place so the pane cracks but stays in the opening, which is what makes it suitable for barriers and overhead glazing.
PVB is the standard interlayer: reliable fragment retention, good ultraviolet blocking and economical. Ionoplast is considerably stiffer and stronger and resists moisture at exposed edges far better, so it is used where the laminate carries structural load, such as free-standing balustrades and marine glazing.
Not necessarily stronger, but it behaves better when it fails. Toughened glass resists more force before breaking, then clears the opening completely. Laminated glass may break sooner but stays in place. Where both matter, toughened laminated combines the two.
Yes, particularly with an acoustic interlayer, which damps vibration across the frequencies where speech and traffic noise sit. For best results pair it with a pane of different thickness in an insulated unit, because two identical panes resonate together and let that frequency through.
It is cut during manufacture, before or during lamination depending on the process, and cannot be trimmed afterwards without compromising the edge seal. Where the laminate includes toughened panes, nothing can be cut after toughening at all, so final dimensions are needed before production.
The interlayer blocks the large majority of ultraviolet light, which is why laminated glass is specified where fabrics, flooring or artwork would otherwise fade. It does not block infrared heat, so solar gain still needs a coating or a tint to control it.
Approvals
Processed to recognised approvals
Architectural approvals held by TPRS. Certificate numbers and test reports are available with a quotation.
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Full list on the quality and certification page. Certificate numbers available on request.
Enquiries
Send the drawing, get a specification
Panel sizes, thickness, make-up and quantity are all TPRS needs to quote. Processing runs from two plants in Puducherry and Dharwad, with offices in Chennai and Bangalore.