US4865908A
Expired / Lapsed
US
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Coated, oriented polymer film laminate
Assignee: Mobil Oil AS
•
Filing: 1987-09-21
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Granted: 1989-09-12
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Expires: 2007-09-21
Abstract
Abstract A coated, oriented polymer film laminate is provided which comprises: (a) an oriented core layer having an upper face and a lower face, said core layer being fabricated from a polypropylene homopolymer; (b) an oriented layer applied to the lower face, and optionally, to the upper face, of core layer (a), said layer being fabricated from a member of the group consisting of copolymer or blend of copolymers, homopolymer or blend of homopolymers, a blend of at least one copolymer and at least one homopolymer, terpolymer or blend of terpolymers, and a blend of at least one terpolymer and at least one homopolymer or at least one copolymer; (c) a coating layer applied to the upper face of core layer (a), or, where layer (b) has been applied thereto, to the exposed surface of said layer (b), and; (d) an adhesively bonded substrate or a coating composition applied directly to the exposed surface of layer (b) applied to the lower face of core layer (a).
Inventors
- 👤 Leland L. Liu
- 👤 Robert E. Touhsaent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:41
CPC Classifications
C; C09; C09J; C09J123/00; C09J123/02; C09J123/10; C09J123/14; C09J123/142; B; B32; B32B; B32B27/00; B32B27/32; C09J123/04; C09J123/08; C09J123/0807; C09J123/0815; C08; C08L; C08L2666/00; C08L2666/02; C08L2666/04; Y; Y10; Y10S; Y10S428/00; Y10S428/91; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/2942; Y10T428/2947; Y10T428/2958; Y10T428/2962; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31699; Y10T428/31855; Y10T428/3188; Y10T428/31884; Y10T428/31888; Y10T428/31891; Y10T428/31895; Y10T428/31899; Y10T428/31902; Y10T428/31906; Y10T442/00; Y10T442/60; Y10T442/674; Y10T442/678
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
177 words
A coated, oriented polymer film laminate which comprises: a) an oriented core layer having an upper and a lower face, said core layer being fabricated from a polypropylene homopolymer; b) an oriented layer applied to at least the lower face of core layer (a), said layer being fabricated from a member of the hydrocarbon group consisting of copolymer or blend of copolymers, homopolymer or blend of homopolymers, blend of at least one copolymer and at least one homopolymer, terpolymer or blend of terpolymers, and a blend of at least one terpolymer in combination with at least one homopolymer or one copolymer; c) a coating layer applied to the upper face of core layer (a), said coating layer being derived from a polyvinylidene chloride polymer or copolymer; and, d) a layer applied directly to the exposed surface of layer (b) applied to the lower face of core layer (a), said layer (d) being selected from the group consisting of adhesively bonded substrates of polymer film, polymer film laminate, metal foil, cellulosic web and non-woven tissue; and water-based coating.
Claim 2
Dependent Claim
177 words
A coated, oriented polymer film laminate which comprises: a) an oriented core layer having an upper and a lower face, said core layer being fabricated from a polypropylene homopolymer; b) an oriented layer applied to at least the lower face of core layer (a), said layer being fabricated from a member of the hydrocarbon group consisting of copolymer or blend of copolymers, homopolymer or blend of homopolymers, blend of at least one copolymer and at least one homopolymer, terpolymer or blend of terpolymers, and a blend of at least one terpolymer in combination with at least one homopolymer or one copolymer; c) a coating layer applied to the upper face of core layer (a), said coating layer being derived from a polyvinylidene chloride polymer or copolymer; and, d) a layer applied directly to the exposed surface of layer (b) applied to the lower face of core layer (a), said layer (d) being selected from the group consisting of adhesively bonded substrates of polymer film, polymer film laminate, metal foil, cellulosic web and non-woven tissue; and water-based coating.
Claim 3
Dependent Claim
41 words
The polymer film laminate of claim 1 wherein coating layer (c) and/or adhesively bonded substrate or coating composition (d) is applied to a film surface which has been previously treated to increase the energy of said surface and, optionally also primed.
Claim 4
Dependent Claim
17 words
The polymer film laminate of claim 2 wherein core layer (a) is fabricated from an isotactic polypropylene.
Claim 5
Dependent Claim
26 words
The polymer film laminate of claim 2 wherein layer (b) is fabricated from an ethylene-propylene copolymer containing- from about 1.0 to about 10 weight percent ethylene.
Claim 6
Dependent Claim
26 words
The polymer film laminate of claim 2 wherein layer (b) is fabricated from an ethylene-propylene copolymer containing from about 1.5 to about 10 weight percent ethylene.
Claim 7
Dependent Claim
86 words
The polymer film laminate of claim 2 wherein said copolymer is selected from the group consisting of ethylene-butylene copolymer having a butylene content of from about 1% to about 7%, propylene-butylene copolymer having a butylene content of from about 1% to about 7%, ethylene methacrylate copolymer having a methacrylate content of from about 15% to about 30%, ethylene-vinylacetate copolymer having a vinylacetate content of from about 2% to about 20%, and ethylene acrylic acid having an acrylic acid content of from about 4% to about 13%.
Claim 8
Dependent Claim
31 words
The polymer film laminate of claim 2 wherein said homopolymer is selected from the group consisting of low density polyethylene, linear low density polyethylene, medium density polyethylene and high density polyethylene.
Claim 9
Dependent Claim
46 words
The polymer film laminate of claim 2 wherein coating layer (c) comprises a polyvinylidene chloride polymer applied through a primer layer to the upper face of core layer (a) or the exposed surface of layer (b) optionally applied to the upper face of core layer (a).
Claim 10
Dependent Claim
16 words
The polymer film laminate of claim 8 wherein the vinylidene content is at least about 50%.
Claim 11
Dependent Claim
18 words
The polymer film laminate of claim 8 wherein said vinylidene content is from about 75% to about 92%.
Claim 12
Dependent Claim
17 words
The polymer film laminate of claim 1 wherein core layer (a) is fabricated from an isotactic polypropylene.
Claim 13
Dependent Claim
24 words
The polymer film laminate of claim 1 wherein layer (b) is fabricated from an ethylene-propylene copolymer containing at least about 1.0 weight percent ethylene.
Claim 14
Dependent Claim
26 words
The polymer film laminate of claim 1 wherein layer (b) is fabricated from an ethylene-propylene copolymer containing from about 1.5 to about 10 weight percent ethylene.
Claim 15
Dependent Claim
86 words
The polymer film laminate of claim 1 wherein said copolymer is selected from the group consisting of ethylene-butylene copolymer having a butylene content of from about 1% to about 7%, propylene-butylene copolymer having a butylene content of from about 1% to about 7%, ethylene methacrylate copolymer having a methacrylate content of from about 15% to about 30%, ethylene-vinylacetate copolymer having a vinylacetate content of from about 2% to about 20%, and ethylene acrylic acid having an acrylic acid content of from about 4% to about 13%.
Claim 16
Dependent Claim
31 words
The polymer film laminate of claim 1 wherein said homopolymer is selected from the group consisting of low density polyethylene, linear low density polyethylene, medium density polyethylene and high density polyethylene.
Claim 17
Dependent Claim
36 words
The polymer film laminate of claim 1 wherein layer (b) is fabricated from an ethylene-propylene-butylene terpolymer containing from about 1 to about 10 weight percent ethylene and from about 80 to about 97 weight percent propylene.
Claim 18
Dependent Claim
35 words
The polymer film laminate of claim 1 wherein layer (b) is fabricated from an ethylene-propylene-butylene terpolymer containing from about 2 to about 6 weight percent ethylene from about 88 to about 95 weight percent propylene.
Claim 19
Dependent Claim
37 words
The polymer film laminate of claim 1 wherein layer (b) is fabricated from a blend of from about 10 to about 90 weight percent ethylene-propylene-butylene terpolymer and from about 90 to about 10 weight percent polypropylene homopolymer.
Claim 20
Dependent Claim
39 words
The polymer film laminate of claim 1 wherein layer (b) is fabricated from a blend of from about 1 to about 99 weight percent polypropylene homopolymer and from about 99 to about 1 weight percent linear low density polyethylene.
Claim 21
Dependent Claim
39 words
The polymer film laminate of claim 1 wherein layer (b) is fabricated from a blend of from about 10 to about 90 weight percent of polypropylene and from about 90 to about 10 weight percent of a propylene-butylene copolymer.
Claim 22
Dependent Claim
48 words
The polymer film laminate of claim 1 wherein layer (b) is fabricated from a blend of from about 10 to about 90 weight percent polypropylene and from 90 to about 10 weight percent of a copolymer of ethylene and an alpha olefin having at least 4 carbon atoms.
Claim 23
Dependent Claim
38 words
The polymer film laminate of claim 1 wherein layer (b) is fabricated from a blend of from about 10 to about 90 weight percent polypropylene and from about 90 to about 10 weight percent of an ethylene-propylene copolymer.
Claim 24
Dependent Claim
38 words
The polymer film laminate of claim 1 wherein layer (b) is fabricated from a blend of from about 90 to about 10 weight percent polybutylene and from about 10 to about 90 weight percent of a propylene-butylene copolymer.
Claim 25
Dependent Claim
46 words
The polymer film laminate of claim 1 wherein coating layer (c) comprises a polyvinylidene chloride polymer applied through a primer layer to the upper face of core layer (a) or the exposed surface of layer (b) optionally applied to the upper face of core layer (a).
Claim 26
Dependent Claim
18 words
The polymer film laminate of claim 24 wherein said vinylidene content is from about 75% to about 92%.
Claim 27
Dependent Claim
16 words
The polymer film laminate of claim 1 wherein the vinylidene content is at least about 50%.
Claim 28
Dependent Claim
16 words
The polymer film laminate of claim 1 wherein coating layer (c) contains a hot slip agent.
Claim 29
Dependent Claim
15 words
The polymer film laminate of claim 1 wherein coating layer (c) contains an anti-blocking agent.
Claim 30
Dependent Claim
16 words
The polymer film laminate of claim 1 wherein coating layer (c) contains a cold slip agent.
Claim 31
Dependent Claim
37 words
The polymer film laminate of claim 1 wherein substrate (d) is adhesively bonded through a hot melt polymeric adhesive to the exposed surface of heat sealable layer (b) applied to the lower face of core layer (a).
Claim 32
Dependent Claim
50 words
The polymer film laminate of claim 1 wherein substrate (d) is adhesively bonded through a hot melt polymeric adhesive selected from the group consisting of low density polyethylene and ethylene-methacrylic acid copolymer to the exposed surface of heat sealable layer (b) applied to the lower face of core layer (a).
Claim 33
Dependent Claim
30 words
The polymer film laminate of claim 1 wherein layer (b) is also applied to the upper face of core layer (a) in between core layer (a) and coating layer (c).
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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) | 1992-09-11 | 1993-03-13 | 1993-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-11 | 1997-03-13 | 1997-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-11 | 2001-03-13 | 2001-09-12 | $7700.00 | Window Closed / Lapsed |