What is TPU lamination?
Thermoplastic polyurethane (TPU) is any of a class of polyurethane plastics with many properties, including elasticity, transparency, and resistance to oil, grease, and abrasion. Technically, they are thermoplastic elastomers consisting of linear segmented block copolymers composed of hard and soft segments.
What is the plastic interlayer in laminated glass?
polyvinyl butyral
Laminated glass is a type of safety glass that holds together when shattered. In the event of breaking, it is held in place by an interlayer, typically of polyvinyl butyral (PVB), ethylene-vinyl acetate (EVA), or thermoplastic polyurethane (TPU), between its two or more layers of glass.
What is interlayer glass?
A laminated glass comprises two or more layers of glass which are permanently bonded together. using an interlayer material. The layers in laminated glass are typically referred to as a ply or plies. For certain applications, plies of glass will be replaced with alternative materials such as.
Which polymeric material is used in laminated glass?
Polymers such as PVB, ionomers, EVA and TPU are used as interlayer materials in laminated glass.
Which is the most common interlayer material in laminated glass?
The first one includes the most common interlayer materials, bonded by means of lamination process: sheet type polymers, such as poylvinil butyral (PVB), ethylene–vinyl acetate (EVA), ionomers (e.g. SentryGlas), thermoplastic polyurethane (TPU), polycarbonates (PC), and polyethylene terephthalate (PET).
How are the layers of laminated glass bonded?
A laminated glass comprises two or more layers of glass which are permanently bonded together using an interlayer material. The layers in laminated glass are typically referred to as a ply or plies. For certain applications, plies of glass will be replaced with alternative materials such as polycarbonate to improve resistance.
How is an interlayer laid between plies of glass?
The interlayer is laid between plies of glass of the required thickness, with multiple sheets of interlayer being used to achieve the required thickness when required i.e. 2 x 0.76 = 1.52mm thick interlayer.
How does interlayer of glass affect bending stiffness?
Before breakage, when a laminated glass panel is subjected to out-of-plane bending, the interlayer material transfers shear stresses between confronted glass surfaces, and as a consequence it affects its bending stiffness: the stiffer the interlayer, the higher the out-of-plane bending stiffness of laminated glass panels. [25].
