US5024895A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminate for a safety glazing
Assignee: Solutia Inc
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Filing: 1990-06-18
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Granted: 1991-06-18
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Expires: 2010-06-18
Abstract
Abstract A flexible, draw-formed laminate for a safety glazing comprising a transparent, thermoplastic carrier film which is shrink-stable during laminating formation of such safety glazing bonded to at least one layer of plasticized polyvinyl butyral, such film having a greater tensile modulus than that of the layer of plasticized polyvinyl butyral. The carrier film is preferably flexible polyester such as polyethylene terephthalate having one or more functional performance coatings or layers on its surface such as a multi-layered solar radiation control stack.
Inventors
- 👤 Dean L. Kavanagh
- 👤 Robert H. M. Simon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:51
CPC Classifications
B; B29; B29C; B29C51/00; B29C51/10; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B27/30; B32B27/306; B29C51/14; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/10009; B32B17/10165; B32B17/10174; B32B17/1055; B32B17/10761; B32B17/10807; B32B17/10981; B32B27/36; B32B37/00; B32B37/14; B32B37/144; B32B7/00; B32B7/02; B29K; B29K2067/00; B32B2307/00; B32B2307/70; B32B2307/732; B32B2307/734; B32B2329/00; B32B2329/06; B32B2367/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31507; Y10T428/31551; Y10T428/31627; Y10T428/3163; Y10T428/31678; Y10T428/31681; Y10T428/31721; Y10T428/31786
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
61 words
A flexible, draw-formed laminate capable of conforming to a surface with compound curvature for use in a safety glazing comprising a transparent, thermoplastic carrier film which is shrink-stable during laminating formation of said safety glazing, bonded to at least one layer of plasticized polyvinyl butyral, said film having a greater tensile modulus than that of the layer of plasticized polyvinyl butyral.
Claim 2
Dependent Claim
61 words
A flexible, draw-formed laminate capable of conforming to a surface with compound curvature for use in a safety glazing comprising a transparent, thermoplastic carrier film which is shrink-stable during laminating formation of said safety glazing, bonded to at least one layer of plasticized polyvinyl butyral, said film having a greater tensile modulus than that of the layer of plasticized polyvinyl butyral.
Claim 3
Dependent Claim
13 words
The laminate of claim 1 wherein the thermoplastic of the film comprises polyester.
Claim 4
Dependent Claim
11 words
The laminate of claim 2 wherein the polyester is polyalkylene terephthalate.
Claim 5
Dependent Claim
10 words
The laminate of claim 3 wherein the polyalkylene is polyethylene.
Claim 6
Dependent Claim
28 words
The laminate of either of claims 1 or 4 wherein the film is sufficiently stress-relieved to avoid substantial wrinkling during elevated temperature laminating formation of the safety glazing.
Claim 7
Dependent Claim
21 words
The laminate of claim 5 wherein the thermoplastic film is interposed between and bonded to two layers of plasticized polyvinyl butyral.
Claim 8
Dependent Claim
37 words
The laminate of claim 6 wherein the bonded thermoplastic film has a carrier surface on which is deposited one or more metal layers and one or more cooperating adherent dielectric layers defining a solar radiation control stack.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-06-17 | 1994-12-17 | 1995-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-06-17 | 1998-12-17 | 1999-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-06-17 | 2002-12-17 | 2003-06-18 | $7700.00 | Window Closed / Lapsed |