Abstract: A multiple glazing unit comprising two vitreous material sheets positioned in a face-to-face spaced apart relationship, and having a gas space there-between delimited by a peripherally extending spacer. Layers of sealant are positioned between the spacer and each of the sheets. A cordon or cordons of resin are positioned in contact the layers of sealant and extending between the spacer and each of the sheets. At least part of each face of the spacer in contact with the sealant extends obliquely with respect to the inner surface of the adjacent sheet. The layers of sealant extend progressively from a region of minimum thickness to a region of maximum thickness. The resin is in contact with the sealant substantially in the region of maximum thickness. The spacer has a cross-section which is open to the gas space and/or the oblique faces of the spacer extend at an angle of at least 9.1.degree..

Abstract: A glazing unit, including a composite glazing panel having a pair of vitreous sheets positioned parallel to one another and having respective marginal portions which face one another; an intervening layer which is comprised of polymeric material, which is sandwiched between the pair of vitreous sheets, and which has viscoelastic properties such that the composite glazing panel has a critical frequency of coincidence (or a lower or lowest critical frequency of coincidence if there is more than one), (.phi..sub.p) , which is greater than a critical frequency of coincidence of a notional monolithic vitreous sheet, (.phi..sub.

Abstract: A glazing assembly, suitable for use as an emergency escape, includes a laminated panel composed of at least two sheets of vitreous material adhered to a polymeric intervening layer which extends continuously between the at least two sheets of vitreous material, wherein, in at least one minor area zone of the laminated panel, possibility of elongation of the polymeric intervening layer under the influence of mechanical stess when the at least two sheets of vitreous material are broken, is different compared with the possibility of elongation of the polymeric intervening layer over the rest of the laminated panel.