Patent US5028480A successfully refreshed from Google Patents.
US5028480A
Expired / Lapsed
US
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Polymeric films
Assignee: Treofan Germany GmbH and Co KG
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Filing: 1988-09-30
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Granted: 1991-07-02
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Expires: 2008-09-30
Abstract
Abstract The invention concerns polymeric films including a layer of polypropylene homopolymer with a layer of voided polypropylene on one side and a layer of a printable polymer on the other side.The printable polymer is preferably an acrylic polymer, a co- or terpolymer containing units derived form at least two of ethylene, propylene or but-1-ene, and/or a linear low density polyethylene. Films of the present invention have good gloss combined with printability and a pearlescent effect. They can also provide evidence of tampering with packaged goods.
Inventors
- 👤 Darren W. Dean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:34
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B27/32; B32B27/18; B32B27/20; B32B27/205; B32B27/30; B32B27/308; B32B2307/00; B32B2307/30; B32B2307/31; B32B2307/40; B32B2307/406; B32B2307/409; B32B2307/70; B32B2307/75; B32B2323/00; B32B2323/10; B32B2553/00; Y; Y10; Y10S; Y10S428/00; Y10S428/91; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/249921; Y10T428/249953; Y10T428/249976; Y10T428/249977; Y10T428/249978; Y10T428/24998; Y10T428/249986; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31913
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
31 words
A polymeric film comprising a layer of non-voided propylene homopolymer having a layer of voided polypropylene on one side and a layer of a glossy, printable polymer on the other side.
Claim 2
Dependent Claim
31 words
A polymeric film comprising a layer of non-voided propylene homopolymer having a layer of voided polypropylene on one side and a layer of a glossy, printable polymer on the other side.
Claim 3
Dependent Claim
19 words
A film according to claim 1, wherein the layer of propylene homopolymer is from 5 to 25 microns thick.
Claim 4
Dependent Claim
19 words
A film according to claim 1, wherein the layer of voided polypropylene is from 5 to 25 microns thick.
Claim 5
Dependent Claim
14 words
A film according to claim 1, wherein the printable polymer is an acrylic polymer.
Claim 6
Dependent Claim
19 words
A film according to claim 4, wherein the layer of printable polymer is from 0.1 to 2 microns thick.
Claim 7
Dependent Claim
27 words
A film according to claim 1, wherein the printable polymer comprises a co- or ter-polymer containing units derived from at least two of ethylene, propylene or butene-1.
Claim 8
Dependent Claim
19 words
A film according to claim 6, wherein the layer of printable polymer is from 0.5 to 5 microns thick.
Claim 9
Dependent Claim
28 words
A film according to claim 1, wherein the voided layer contains from 4 to 25 weight percent of voiding agent, based on the weight of the voided layer.
Claim 10
Dependent Claim
28 words
A film according to claim 8, wherein the voided layer contains from 20 to 25 weight percent of voiding agent, based on the weight of the voided layer.
Claim 11
Dependent Claim
17 words
A film according to claim 1, having a density of not more than 0.71 g/cm 3 .
Claim 12
Dependent Claim
18 words
A film according to claim 1, wherein the layer of voided polypropylene has a further polymer layer thereon.
Claim 13
Dependent Claim
16 words
A film according to claim 1, wherein the further polymer layer is printable and/or heat sealable.
Claim 14
Dependent Claim
22 words
A film according to claim 6, wherein the printable polymer comprises said co- or ter-polymer in admixture with linear low density polyethylene.
References Cited (Backward Citations)
GB1268823A
Cited
USRE30805E
Cited
US4377616A
Cited
US4438175A
Cited
GB2150074A
Cited
GB2150881A
Cited
GB2177049A
Cited
US4578297A
Cited
US4632869A
Cited
US4741950A
Cited
US4734324A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-07-01 | 1994-12-31 | 1995-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-07-01 | 1998-12-31 | 1999-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-07-01 | 2002-12-31 | 2003-07-02 | $7700.00 | Window Closed / Lapsed |