Patent US4855186A successfully refreshed from Google Patents.
US4855186A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated plastic film and plastic laminate prepared therefrom
Assignee: Hoechst AG
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Filing: 1988-02-23
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Granted: 1989-08-08
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Expires: 2008-02-23
Abstract
Abstract A coated plastic film 5 possessing high transmittance for visible light and high reflectance for heat radiation is disclosed which comprises a carrier film 1 of a transparent polymer and a reflection metal layer 3 embedded between two dielectric layers 2 and 4. The reflection metal layer 3 is formed from a metal selected from the group comprising silver, gold, and copper, whereas dielectric layers 2 and 4 are metal nitride layers. This coated plastic film may be coated on each side with a polyvinyl butyral film to form a plastic laminate which is itself a constituent of a laminated safety glass pane.
Inventors
- 👤 Gerhard Grolig
- 👤 Guenther Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:08
CPC Classifications
B; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/10009; B32B17/10036; B32B17/10165; B32B17/10174; B32B17/1055; B32B17/10761; G; G02; G02B; G02B5/00; G02B5/20; G02B5/208; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/24975; Y10T428/26; Y10T428/266; Y10T428/31504; Y10T428/31551; Y10T428/31627; Y10T428/3163; Y10T428/31678; Y10T428/31681; Y10T428/31692; Y10T428/31786
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
111 words
A coated plastic film possessing a high transmittance for visible light and high reflectance for infrared radiation comprising a transparent plastic carrier film having a transparent heat reflection layer on at least one surface, said transparent heat reflection layer consisting of: (a) a first dielectric layer adherent to the surface of said carrier film, said first dielectric layer comprising a nitride; (b) a heat reflection metallic layer adherent to said first dielectric layer; and (c) a second dielectric layer adherent to said heat reflection metallic layer, said second dielectric layer comprising a nitride; said first and second dielectric layers are selected from the group consisting of aluminum nitride and silicon nitride.
Claim 2
Dependent Claim
111 words
A coated plastic film possessing a high transmittance for visible light and high reflectance for infrared radiation comprising a transparent plastic carrier film having a transparent heat reflection layer on at least one surface, said transparent heat reflection layer consisting of: (a) a first dielectric layer adherent to the surface of said carrier film, said first dielectric layer comprising a nitride; (b) a heat reflection metallic layer adherent to said first dielectric layer; and (c) a second dielectric layer adherent to said heat reflection metallic layer, said second dielectric layer comprising a nitride; said first and second dielectric layers are selected from the group consisting of aluminum nitride and silicon nitride.
Claim 3
Dependent Claim
32 words
The coated film of claim 1 possessing a transparency of at least 73% for a wavelength of 550 nm and a reflectance of at least 80% for a wavelength of 2,500 nm.
Claim 4
Dependent Claim
27 words
The coated film of claim 1 wherein said dielectric layers and said heat reflection metallic layer are each applied successively to said carrier film by cathodic sputtering.
Claim 5
Dependent Claim
26 words
The coated plastic film of claim 1 wherein said heat reflection metallic layer comprises a metal selected from the group consisting of silver, gold, and copper.
Claim 6
Dependent Claim
44 words
The coated plastic film of claim 4 wherein said heat reflection metal layer has a thickness in the range of from 5 to 40 nm and the thickness of each of said dielectric layers is in the range of from 20 to 60 nm.
Claim 7
Dependent Claim
24 words
The coated film of claim 1 wherein said carrier film comprises a polyethylene terephthalate film having a thickness of from 5 to 250 μm.
Claim 8
Dependent Claim
24 words
The coated film of claim 6 wherein the thickness of said polyethylene terephthalate film is in the range of from 5 to 50 μm.
Claim 9
Dependent Claim
101 words
A plastic laminate possessing a high transmittance for visible light and high reflectance for infrared radiation comprising two layers of polyvinyl butyral separated by a transparent plastic carrier film having a transparent heat reflection layer on at least one surface, said transparent heat reflection layer consisting of (a) a first dielectric layer adherent to the surface of said carrier film, said first dielectric layer comprising a metal nitride; (b) a heat reflection metallic layer adherent to said first dielectric layer; and (c) a second dielectric layer adherent to said heat reflection metallic layer, said second dielectric layer comprising a metal nitride.
Claim 10
Dependent Claim
101 words
A plastic laminate possessing a high transmittance for visible light and high reflectance for infrared radiation comprising two layers of polyvinyl butyral separated by a transparent plastic carrier film having a transparent heat reflection layer on at least one surface, said transparent heat reflection layer consisting of (a) a first dielectric layer adherent to the surface of said carrier film, said first dielectric layer comprising a metal nitride; (b) a heat reflection metallic layer adherent to said first dielectric layer; and (c) a second dielectric layer adherent to said heat reflection metallic layer, said second dielectric layer comprising a metal nitride.
Claim 11
Dependent Claim
25 words
The plastic laminate of claim 8 wherein the individual thickness of each polyvinyl butyral film is in the range of from 0.2 to 0.8 mm.
Claim 12
Dependent Claim
17 words
A laminated safety glass pane comprising two glass panes separated by the plastic laminate of claim 8.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-08-07 | 1993-02-06 | 1993-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-08-07 | 1997-02-06 | 1997-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-08-07 | 2001-02-06 | 2001-08-08 | $7700.00 | Window Closed / Lapsed |