Patent US4550052A successfully refreshed from Google Patents.
US4550052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gravel-resistant selfadhesive decorative film
Assignee: Beiersdorf AG
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Filing: 1983-04-21
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Granted: 1985-10-29
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Expires: 2003-04-21
Abstract
Abstract A gravel-resistant selfadhesive decorative film which consists of (a) a thermoformable base of a calendered EVA-PVC copolymer film 80-900 μm thick, which is (b) coated with a polyurethane primer on which is applied (c) a shearing-resistant, aging-resistant acrylate self-adhesive composition on which is present (d) a covering of release paper or release film.
Inventors
- 👤 Wasfi N. Malek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:41
CPC Classifications
B; B44; B44C; B44C1/00; B44C1/10; B44C1/105; C; C09; C09J; C09J7/00; C09J7/20; C09J7/22; C09J7/24; C09J7/245; Y; Y10; Y10T; Y10T428/00; Y10T428/14; Y10T428/1462; Y10T428/25; Y10T428/256; Y10T428/259; Y10T428/26; Y10T428/266; Y10T428/28; Y10T428/2839; Y10T428/2848; Y10T428/2852; Y10T428/2878; Y10T428/2891; Y10T428/31504; Y10T428/31551; Y10T428/31573; Y10T428/31576; Y10T428/3158; Y10T428/31598
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
53 words
A gravel-resistant selfadhesive decorative film which consists of (a) a thermoformable base of a calendered EVA-PVC copolymer film 80-900 μm thick, which is (b) coated with a polyurethane primer on which is applied (c) a shearing-resistant, aging-resistant acrylate selfadhesive composition on which is present (d) a covering of release paper or release film.
Claim 2
Dependent Claim
53 words
A gravel-resistant selfadhesive decorative film which consists of (a) a thermoformable base of a calendered EVA-PVC copolymer film 80-900 μm thick, which is (b) coated with a polyurethane primer on which is applied (c) a shearing-resistant, aging-resistant acrylate selfadhesive composition on which is present (d) a covering of release paper or release film.
Claim 3
Dependent Claim
35 words
A decorative film according to claim 1, which also possesses (e) a surface sealing coat on the otherwise uncoated side of the base, which sealing coat consists of polyurethane/silicone, polyurethane paint or polyurethane matt finish.
Claim 4
Dependent Claim
95 words
A decorative film according to claim 1 in which the EVA-PVC copolymer base (a) comprises 30-35 parts by weight of EVA-PVC copolymer having a K value of 68 and containing 10% of EVA, 23-28 parts by weight of an EVA-PVC copolymer having a K value of 60 and containing 10% of EVA, 22-26 parts by weight of an EVA-PVC copolymer having a K value of 79 and containing 50% of EVA, 1-4 parts by weight of polymethyl methacrylate and 10-14 parts by weight of polyester, in addition to plasticizers, colorants, stabilizers, processing aids and fillers.
Claim 5
Dependent Claim
19 words
A decorative film according to claim 1, wherein a base (a) is a single-ply, twin-ply or triple-ply calendered film.
Claim 6
Dependent Claim
19 words
A decorative film according to claim 1, wherein the primer (b) is a non-reactive, linear, aliphatic polyurethane resin primer.
Claim 7
Dependent Claim
32 words
A decorative film according to claim 1, wherein the selfadhesive composition (c) is a copolymer of isooctyl acrylate and methyl acrylate, containing free carboxyl groups corresponding to about 5% of acrylic acid.
Claim 8
Dependent Claim
27 words
A decorative film according to claim 1, wherein the top coat (d) is a siliconized release paper or a release film, such as a silicone-lacquered polyurethane film.
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) | 1988-10-28 | 1989-04-29 | 1989-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-28 | 1993-04-29 | 1993-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-28 | 1997-04-29 | 1997-10-29 | $7700.00 | Window Closed / Lapsed |