Glass laminates comprising acoustic interlayers and solar control films
First Claim
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1. An acoustic solar control laminate consisting of:
- (a) a first rigid sheet;
(b) a first polymeric sheet;
(c) a polymeric film, which is coated on at least one side with an infrared energy reflective layer;
(d) a second polymeric sheet; and
(e) a second rigid sheet;
wherein the first rigid sheet is adhered to the first polymeric sheet;
the first polymeric sheet is adhered to the polymeric film;
the polymeric film is adhered to the second polymeric sheet; and
the second polymeric sheet is adhered to the second rigid sheet;
and further wherein the first polymeric sheet comprises an acoustic poly(vinyl acetal) composition having a glass transition temperature of 23°
C. or less, said acoustic poly(vinyl acetal) composition comprising a plasticizer and a poly(vinyl acetal), said poly(vinyl acetal) being produced by acetalizing a poly(vinyl alcohol) with one or more aldehydes containing 4 to 6 carbon atoms, said poly(vinyl acetal) having an acetalization degree of at least about 50 mole %, and said poly(vinyl acetal) having a saponification degree of at least 95 mole %, based on the total number of moles of vinyl groups in the poly(vinyl acetal); and
wherein the first and the second rigid sheets are each formed of a material having a modulus of at least about 100,000 psi (690 MPa).
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Abstract
An acoustic solar control laminate comprising a multi-layer interlayer formed of a solar control film bonded between two polymeric sheets with at least one being an acoustic poly(vinyl acetal) sheet is provided.
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Citations
13 Claims
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1. An acoustic solar control laminate consisting of:
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(a) a first rigid sheet; (b) a first polymeric sheet; (c) a polymeric film, which is coated on at least one side with an infrared energy reflective layer; (d) a second polymeric sheet; and (e) a second rigid sheet; wherein the first rigid sheet is adhered to the first polymeric sheet;
the first polymeric sheet is adhered to the polymeric film;
the polymeric film is adhered to the second polymeric sheet; and
the second polymeric sheet is adhered to the second rigid sheet;and further wherein the first polymeric sheet comprises an acoustic poly(vinyl acetal) composition having a glass transition temperature of 23°
C. or less, said acoustic poly(vinyl acetal) composition comprising a plasticizer and a poly(vinyl acetal), said poly(vinyl acetal) being produced by acetalizing a poly(vinyl alcohol) with one or more aldehydes containing 4 to 6 carbon atoms, said poly(vinyl acetal) having an acetalization degree of at least about 50 mole %, and said poly(vinyl acetal) having a saponification degree of at least 95 mole %, based on the total number of moles of vinyl groups in the poly(vinyl acetal); andwherein the first and the second rigid sheets are each formed of a material having a modulus of at least about 100,000 psi (690 MPa). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification