Laminated iav yog kev tsim kho ntawm ob lites ntawm galsss bonde ua ke los ntawm cov khoom siv nplaum- feem ntau polyvinyl butrol (PVB).Qhov no pom tsis tau PVBlayer yog tsim los ua kom cov iav tsis sib xws rau cov qauv thaum tawg, dua li tso cov iav kom tawg mus rau lwm qhov loj. , ntse, thiab txaus ntshai piedes.PVB tseem dulls cov npoo ntawm tawg shards ntawm iav, txo qhov kev pheej hmoo ntawm kev raug mob.Tom qab tau txais ib tug series ntawm cua sov thiab nias, Ob lites ntawm iav thiab PVB interlayer ua ib qho khoom, ruaj khov iav siv.