US4055695A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foamed polyolefine films
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1975-04-17
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Granted: 1977-10-25
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Expires: 1995-04-17
Abstract
Abstract Foamed films of blends of low density polythene and a crystalline polyolefine which have been subjected to surface treatment.
Inventors
- 👤 Anthony Graham Marshall Last
- 👤 John Albert Rixon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:35
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/36; C08J2323/00; C08J2323/02; Y; Y10; Y10S; Y10S521/00; Y10S521/918; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/249921; Y10T428/249953; Y10T428/249986; Y10T428/31504; Y10T428/31855; Y10T428/31938
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
110 words
A wall or ceil covering comprising a printed open celled foamed film of foamed polyolefine derived from a blend containing between 60% and 90% by weight of low density polythene and between 40% and 10% by weight of a crystalline polyolefine, said foamed film having a bulk density between 0.1 and 0.4 grams/cc and an open cell structure in the range of 40 to 90% open cells, the surface of said film having been subjected to surface treatment on at least one surface to improve the ink bonding properties of that surface, said film being characterized by higher abrasion resistance and higher dry ink abrasion resistance than corresponding surface treated
Claim 2
Dependent Claim
110 words
A wall or ceil covering comprising a printed open celled foamed film of foamed polyolefine derived from a blend containing between 60% and 90% by weight of low density polythene and between 40% and 10% by weight of a crystalline polyolefine, said foamed film having a bulk density between 0.1 and 0.4 grams/cc and an open cell structure in the range of 40 to 90% open cells, the surface of said film having been subjected to surface treatment on at least one surface to improve the ink bonding properties of that surface, said film being characterized by higher abrasion resistance and higher dry ink abrasion resistance than corresponding surface treated
Claim 3
Dependent Claim
27 words
A covering according to claim 1 containing from 20% to 35% by weight of high density polythene and from 80% to 65% by weight of low density
Claim 4
Dependent Claim
13 words
A covering according to claim 1 having a thickness of between 0.01 and
Claim 5
Dependent Claim
14 words
A covering according to claim 1 in which the majority of the cells are
Claim 6
Dependent Claim
13 words
A covering according to claim 1 containing 5 to 20% by weight of
Claim 7
Dependent Claim
13 words
A covering according to claim 1 containing from 0.05 to 1.0% of metallic
Claim 8
Dependent Claim
13 words
A covering according to claim 1 containing up to 100 parts per million
Claim 9
Dependent Claim
14 words
A covering according to claim 1 in which the surface treatment comprises chemical oxidation.
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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) | 1980-10-24 | 1981-04-25 | 1981-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-24 | 1985-04-25 | 1985-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-24 | 1989-04-25 | 1989-10-25 | $7700.00 | Window Closed / Lapsed |