Patent US4248647A successfully refreshed from Google Patents.
US4248647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing acoustical ceiling tile faced with a smooth distortion free decorative thin plastic film
Assignee: Armstrong World Industries Inc
•
Filing: 1979-08-07
•
Granted: 1981-02-03
•
Expires: 1999-08-07
Abstract
Abstract A method for producing an acoustical ceiling tile or panel faced with a distortion free decorative thin plastic film is accomplished by first embossing the acoustical base to form a picture frame surrounding a recessed area, stretching the thin decorative plastic film over the picture frame portion and adhesively securing the film to the side and/or back of the acoustical base and subsequenytly heat shrinking the film to produce a distortion free decorative surface.
Inventors
- 👤 Vincent P. Herron
- 👤 Jay D. Shenk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:31
CPC Classifications
B; B29; B29C; B29C63/00; B29C63/02; B32; B32B; B32B3/00; B32B3/26; B32B3/30; B29C63/38; B29C63/40; B32B27/00; B32B27/36; B32B38/00; B32B38/06; B32B7/00; B32B7/04; B32B7/12; E; E04; E04B; E04B9/00; E04B9/04; E04B9/0457; B29K; B29K2995/00; B29K2995/0037; B29L; B29L2007/00; B29L2007/002; B29L2031/00; B29L2031/10; B29L2031/106; B32B38/0012; B32B2038/0028; B32B2307/00; B32B2307/10; B32B2307/70; B32B2307/732; B32B2307/734; B32B2307/736; B32B2419/00; B32B2451/00; E04B2009/0492; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1039
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
92 words
A method of forming a decorative acoustical product comprising: (a) embossing an acoustical base in register to form an embossed picture frame coextensive with the edges of the base and surrounding a recessed area; (b) stretching a decorative plastic film over the picture frame and adhesively securing the film to the acoustical base; and (c) subjecting the film faced product to heat to shrink the film and thus stretch the film over the embossed picture frame out of contact with the recessed area to form a distortion free decorative film facing layer.
Claim 2
Independent Claim
92 words
A method of forming a decorative acoustical product comprising: (a) embossing an acoustical base in register to form an embossed picture frame coextensive with the edges of the base and surrounding a recessed area; (b) stretching a decorative plastic film over the picture frame and adhesively securing the film to the acoustical base; and (c) subjecting the film faced product to heat to shrink the film and thus stretch the film over the embossed picture frame out of contact with the recessed area to form a distortion free decorative film facing layer.
Claim 3
Dependent Claim
41 words
A method in accordance with claim 1 wherein the decorative plastic film is a polyester film having a thickness between 0.0005 and 0.001 inches and which shrinks from about 1.5 to 5 percent when heated at 150° C. for 30 minutes.
Claim 4
Dependent Claim
15 words
A method in accordance with claim 2 wherein the decorative film is a metalized film.
Claim 5
Dependent Claim
26 words
A method in accordance with claim 1, 2 or 3 wherein the recessed area is depressed about 0.030 inches or more below the embossed picture frame.
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) | 1984-02-03 | 1984-08-04 | 1985-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-03 | 1988-08-04 | 1989-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-03 | 1992-08-04 | 1993-02-03 | $7700.00 | Window Closed / Lapsed |