Glazing unit and a method for its manufacture
First Claim
1. A glazing unit, comprising:
- 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 adhesively 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), (φ
p), which is greater than a critical frequency of coincidence of a notional monolithic vitreous sheet, (φ
m), the notional monolithic vitreous sheet having a shape and an area which are the same as that of the composite glazing panel and having a mass which is equal to the total mass of vitreous material in the composite glazing panel, andan adhesive material which is in contact with each vitreous sheet of the pair of vitreous sheets at at least the respective marginal portions thereof, and which is in contact with an outer face of at least one vitreous sheet of the pair of vitreous sheets at a marginal portion thereof,wherein the adhesive material exhibits, at 20°
C., an elongation of not more than 12.5% when subjected to a tensile stress of 0.1 MPa, as measured according to ISO 8339.
2 Assignments
0 Petitions
Accused Products
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), (φp) , which is greater than a critical frequency of coincidence of a notional monolithic vitreous sheet, (φm), the notional monolithic vitreous sheet having a shape and an area which are the same as that of the composite glazing panel and having a mass which is equal to the total mass of vitreous material in the composite glazing panel, and an adhesive material which is in contact with each vitreous sheet of the pair of vitreous sheets at at least the respective marginal portions thereof, and which is in contact with an outer face of at least one vitreous sheet of the pair of vitreous sheets at a marginal portion thereof, wherein the adhesive material exhibits, at 20° C., an elongation of not more than 12.5% when subjected to a tensile stress of 0.1 MPa, as measured according to ISO 8339.
36 Citations
27 Claims
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1. A glazing unit, comprising:
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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 adhesively 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), (φ
p), which is greater than a critical frequency of coincidence of a notional monolithic vitreous sheet, (φ
m), the notional monolithic vitreous sheet having a shape and an area which are the same as that of the composite glazing panel and having a mass which is equal to the total mass of vitreous material in the composite glazing panel, andan adhesive material which is in contact with each vitreous sheet of the pair of vitreous sheets at at least the respective marginal portions thereof, and which is in contact with an outer face of at least one vitreous sheet of the pair of vitreous sheets at a marginal portion thereof, wherein the adhesive material exhibits, at 20°
C., an elongation of not more than 12.5% when subjected to a tensile stress of 0.1 MPa, as measured according to ISO 8339. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method of constructing a glazing unit, comprising:
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positioning a pair of vitreous sheets in face-to-face spaced relationship to each other to form a composite glazing panel having a space defined therebetween; filling the space between said pair of vitreous sheets with an intervening layer comprised of polymeric material, wherein the intervening layer has viscoelastic properties such that a critical frequency of coincidence (or the lower or lowest critical frequency of coincidence if there is more than one) of the composite glazing panel, (φ
p), is greater than a critical frequency of coincidence of a notional monolithic vitreous sheet, (φ
m), the notional monolithic vitreous sheet having a shape and an area which is the same as that of the composite glazing panel and having a mass equal to the total mass of vitreous material in the composite glazing panel; andpositioning an adhesive material in contact with each vitreous sheet of the pair of vitreous sheets at at least the respective marginal portions thereof, and positioning the adhesive material in contact with an outer face of at least one vitreous sheet of the pair of vitreous sheets at a marginal portion thereof, wherein the adhesive material exhibits, at 20°
C., an elongation of not more than 12.5% when subjected to a tensile stress of 0.1 MPa, as measured according to ISO 8339. - View Dependent Claims (22, 23, 24, 25, 26, 27)
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Specification