Ionomer resins as interlayers for use with imbedded or attached IR reflective or absorptive films in laminated glazing applications
AssigneeE. I. Du Pont de Nemours and Company
InventorJerrel Anderson
Life of this patent
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Abstract
This invention is glass laminate article comprising a film which can block the transmission of infra red (IR) light. A laminate of the present invention comprises at least two sheets of a non-plasticized thermoplastic polymer which forms the outer layers of a three-layer IR-blocking laminate film.
Claims7
A multiple layer interlayer useful for blocking the transmission of infra red (IR) light, comprising:
- (1) at least two thermoplastic polymer sheets;
- and (2) a film, positioned between the thermoplastic polymer sheets such that the film is in direct contact on each of its surfaces with the sheets, wherein the film can either reflect or absorb IR light, and wherein the thermoplastic polymer sheets are unplasticized.
A multiple layer interlayer useful for blocking the transmission of infra red (IR) light, comprising:
- (1) at least two thermoplastic polymer sheets;
- and (2) a film, positioned between the thermoplastic polymer sheets such that the film is in direct contact on each of its surfaces with the sheets, wherein the film can either reflect or absorb IR light, and wherein the thermoplastic polymer sheets comprise unplasticized ethylene/unsaturated acid copolymer ionomer.
A glass laminate useful for blocking the transmission of IR light, comprising a multiple layer interlayer comprising:
- (1) at least two thermoplastic polymer sheets;
- and (2) a film, positioned between the thermoplastic polymer sheets such that the film is in direct contact on each of its surfaces with the sheets, wherein the film can either reflect or absorb IR light, and wherein the thermoplastic polymer sheets do not include plasticizer.
A glass laminate useful for blocking the transmission of IR light, comprising a multiple layer interlayer comprising:
- (1) at least two thermoplastic polymer sheets;
- and (2) a film, positioned between the thermoplastic polymer sheets such that the film is in direct contact on each of its surfaces with the sheets, wherein the film can either reflect or absorb IR light, and wherein the thermoplastic polymer sheets comprise an unplasticized copolymer of ethylene and an unsaturated acid wherein the acid groups of the copolymer have been at least partially neutralized to yield an ethylene/unsaturated copolymer ionomer.
A process for manufacturing a multiple layer laminate article of the present invention comprising the steps:
- (1) priming at least one of the multiple layers of the laminate by application of a primer solution before assembling the layers;
- (2) assembling at least three layers to be used as component layers for the laminate article, wherein at least one layer is an IR-blocking film, and wherein at least two of the layers are unplasticized thermoplastic polymer sheets;
- (3) positioning the IR-blocking film such that it is contacted on its major surfaces by the unplasticized polymer sheets;
- and, (4) laminating the at least three layers by heating the assembled layers at a temperature of at least 120° C. and at a pressure greater than atmospheric pressure.
Dependencies are inferred from the claim text.