US5225272A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymeric film
Assignee: Imperial Chemical Industries Ltd
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Filing: 1992-04-08
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Granted: 1993-07-06
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Expires: 2012-04-08
Abstract
Abstract A metallized film comprises a substrate layer of a synthetic polymeric material having on at least one surface thereof an adherent layer and a metallic layer on the surface of the at least one adherent layer remote from the substrate, the adherent layer comprising an acrylic and/or methacrylic polymer containing at least one monomer having a free carboxylic group, wherein the carboxylic group content of the polymer is greater than 6 mole %.
Inventors
- 👤 Neil Poole
- 👤 Thane C. Gough
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:17
CPC Classifications
C; C09; C09D; C09D133/00; C09D133/04; C09D133/06; C09D133/062; C09D133/064; C08; C08J; C08J7/00; C08J7/04; C08J7/042; C08J7/0423; C08J7/0427; C08J7/043; C08J2433/00; C08L; C08L61/00; C08L61/20; H; H05; H05K; H05K3/00; H05K3/38; H05K3/386; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/31504; Y10T428/31678; Y10T428/31681; Y10T428/31692; Y10T428/31699
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
112 words
A metallised film suitable for use as a packaging film and comprising a substrate layer of a synthetic polymeric material having on at least one surface thereof an adherent layer and a metallic layer on the surface of the at least one adherent layer remote from the substrate, characterised in that the adherent layer comprises an acrylic and/or methacrylic polymer comprising at least one monomer containing a free carboxylic group, wherein the carboxylic group content of the polymer is greater than 6 mole %, said metallic layer providing a barrier to visible and ultra-violet light and said adherent layer providing improved adhesion between said metallic layer and substrate layer under humid conditions.
Claim 2
Dependent Claim
112 words
A metallised film suitable for use as a packaging film and comprising a substrate layer of a synthetic polymeric material having on at least one surface thereof an adherent layer and a metallic layer on the surface of the at least one adherent layer remote from the substrate, characterised in that the adherent layer comprises an acrylic and/or methacrylic polymer comprising at least one monomer containing a free carboxylic group, wherein the carboxylic group content of the polymer is greater than 6 mole %, said metallic layer providing a barrier to visible and ultra-violet light and said adherent layer providing improved adhesion between said metallic layer and substrate layer under humid conditions.
Claim 3
Dependent Claim
22 words
A metallised film as claimed in claim 1 wherein the carboxylic group content of the polymer is less than 35 mole %.
Claim 4
Dependent Claim
34 words
A metallised film as claimed in either of claims 1 and 2 wherein the at least one monomer is selected from acrylic acid, methacrylic acid and/or a derivative of acrylic acid and/or methacrylic acid.
Claim 5
Dependent Claim
23 words
A metallised film as claimed in claim 1 wherein the adherent layer comprises a polymer comprising methyl methacrylate/butyl acrylate/(acrylic acid and/or methacrylic acid).
Claim 6
Dependent Claim
47 words
A metallised film as claimed in claim 1 wherein the adherent layer comprises a polymer comprising 30 to 40 mole % of methyl methacrylate/40 to 50 mole % of butyl acrylate/5 to 15 mole % of styrene/10 to 20 mole % of (acrylic acid and/or methacrylic acid).
Claim 7
Dependent Claim
17 words
A metallised film as claimed in claim 1 wherein the adherent layer is at least partially cross-linked.
Claim 8
Dependent Claim
39 words
A metallised film as claimed in claim 1 wherein the adherent layer contains a particulate filler having a particle size less than 0.1 μm, and being present in an amount up to 50% by weight of the adherent layer.
Claim 9
Dependent Claim
19 words
A metallised film as claimed in claim 1 wherein the substrate comprises a biaxially oriented film of polyethylene terephthalate.
Claim 10
Independent Claim
118 words
A method of producing a metallised film suitable for use as a packaging film and by forming a substrate layer of a synthetic polymeric material, applying to at least one surface thereof an adherent layer, and depositing a metallic layer on the surface of the at least one adherent layer remote from the substrate, characterised in that the adherent layer comprises an acrylic and/or methacrylic polymer comprising at least one monomer containing a free carboxylic group, wherein the carboxylic group content of the polymer is greater than 6 mole %, the metallic layer providing a barrier to visible and ultra-violet light and said adherent layer providing improved adhesion between said metallic layer and substrate layer under humid conditions.
Claim 11
Independent Claim
118 words
A method of producing a metallised film suitable for use as a packaging film and by forming a substrate layer of a synthetic polymeric material, applying to at least one surface thereof an adherent layer, and depositing a metallic layer on the surface of the at least one adherent layer remote from the substrate, characterised in that the adherent layer comprises an acrylic and/or methacrylic polymer comprising at least one monomer containing a free carboxylic group, wherein the carboxylic group content of the polymer is greater than 6 mole %, the metallic layer providing a barrier to visible and ultra-violet light and said adherent layer providing improved adhesion between said metallic layer and substrate layer under humid conditions.
Claim 12
Dependent Claim
48 words
A method as claimed in claim 9 wherein the substrate is a polyethylene terephthalate film which is biaxially oriented by sequential stretching in two mutually perpendicular directions, the adherent coating medium being applied to the film substrate between the two stages (longitudinal and transverse) of the biaxial stretching.
References Cited (Backward Citations)
US4008203A
Cited
GB1238039A
Cited
US4391767A
Cited
GB1509791A
Cited
US4109052A
Cited
EP0001879A1
Cited
JPS54120098A
Cited
JPS59109357A
Cited
US4704325A
Cited
EP0184458A2
Cited
US4945008A
Cited
EP0357196A1
Cited
EP0360386A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-07-05 | 1997-01-04 | 1997-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-07-05 | 2001-01-04 | 2001-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-07-05 | 2005-01-04 | 2005-07-06 | $7700.00 | Window Closed / Lapsed |