US4777088A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Barrier laminates for containment of essential oils, flavors, oxygen and vitamins
Assignee: BRPP LLC
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Filing: 1987-04-06
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Granted: 1988-10-11
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Expires: 2007-04-06
Abstract
Abstract A laminate providing an effective barrier to the migration of essential oils and/or flavorings, such as d-limonene and for the retention of Vitamin C, is provided comprising from the outer surface to the inner surface, a paperboard substrate, a web of nylon directly coated thereon, a web of Surlyn overlying and in contact with said nylon web and a web of olefin overlying and in contact with said Surlyn web. Preferably the paperboard substrate is also coated on the external surface thereof with a web of heat sealable polymer. Containers constructed from such laminates are especially useful as fruit juice containers which enable significant flavor and Vitamin C retention in the liquid i.e., fruit juice contained therein over the normal shelf life of the product.
Inventors
- 👤 Kenneth P. Thompson
- 👤 Richard C. Ihde
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:21
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/10; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1303; Y10T428/25; Y10T428/27; Y10T428/28; Y10T428/2813; Y10T428/2817; Y10T428/2826; Y10T428/31504; Y10T428/31725; Y10T428/31739; Y10T428/31743; Y10T428/31746; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31899; Y10T428/31902; Y10T428/31909; Y10T428/31913
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
86 words
A laminate providing an effective barrier to the migration of essential oils and/or flavorings therethrough and for retention of vitamin C contained in fruit juices comprising, from the outer surface to the inner surface contacting said fruit juice: a paperboard substrate, a web of nylon coated directly thereon, a web of web of poly(ethylene-co-methacrylic acid) partially neutralized with sodium and zinc cations directly overlying and in contact with said nylon web and a web of olefin polymer directly overlying and in contact with said Surlyn web.
Claim 2
Dependent Claim
86 words
A laminate providing an effective barrier to the migration of essential oils and/or flavorings therethrough and for retention of vitamin C contained in fruit juices comprising, from the outer surface to the inner surface contacting said fruit juice: a paperboard substrate, a web of nylon coated directly thereon, a web of web of poly(ethylene-co-methacrylic acid) partially neutralized with sodium and zinc cations directly overlying and in contact with said nylon web and a web of olefin polymer directly overlying and in contact with said Surlyn web.
Claim 3
Dependent Claim
27 words
The laminate as defined in claim 1 additionally comprising an outer olefin polymer web on the surface of the paperboard substrate opposite the nylon web coated surface.
Claim 4
Dependent Claim
32 words
The laminate as defined in claim 1 additionally comprising a web of poly(ethylene-co-methacrylic acid) partially neutralized with sodium and zinc cations between the paperboard substrate and the nylon web normally adjacent thereto.
Claim 5
Dependent Claim
13 words
The laminate as defined in claim 1 wherein said olefin polymer is polyethylene.
Claim 6
Dependent Claim
15 words
The laminate as defined in claim 4 wherein said olefin polymer is low density polyethylene.
Claim 7
Dependent Claim
20 words
The laminate as defined in claim 1 wherein said paperboard substrate is standard 0.010 to 0.028" paperboard milk carton stock.
Claim 8
Dependent Claim
18 words
The laminate as defined in claim 2 wherein said outer olefin polymer web is of low density polyethylene.
Claim 9
Dependent Claim
26 words
The laminate as defined in claim 1 wherein said nylon web is applied at a coating weight ranging from about 4 to 15 pounds per ream.
Claim 10
Dependent Claim
27 words
The laminate as defined in claim 1 wherein said olefin polymer web is applied at a coating weight ranging from about 5 to 20 pounds per ream.
Claim 11
Dependent Claim
27 words
The laminate as defined in claim 1 wherein said olefin polymer web is applied at a coating weight ranging from about 4 to 12 pounds per ream.
Claim 12
Dependent Claim
31 words
The laminate as defined in claim 1 wherein one of said nylon and webs of poly(ethylene-co-methacrylic acid) partially neutralized with sodium and zinc cations contains a pigment or food grade colorant.
Claim 13
Dependent Claim
36 words
The laminate as defined in claim 1 wherein the said web of poly(ethylene-co-methacrylic acid) partially neutralized with sodium and zinc cations is applied at a coating weight ranging from about 2 to 6 pounds per ream.
References Cited (Backward Citations)
US3972467A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-10-11 | 1992-04-11 | 1992-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-10-11 | 1996-04-11 | 1996-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-10-11 | 2000-04-11 | 2000-10-11 | $7700.00 | Window Closed / Lapsed |