US3687351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite container
Assignee: Primerica Inc
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Filing: 1970-09-24
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Granted: 1972-08-29
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Expires: 1990-09-24
Abstract
Abstract A composite beer or beverage container having a body made from disposable materials comprising a spirally-wound ply of thick, strong aluminum or steel foil forming an inner layer, having an organic slip coat on its inside surface and a thermoplastic adhesive coat on its outside surface, and a spirally wound ply of paperboard forming a middle layer, having a thermoplastic adhesive coat on its inside and outside surfaces. The thermoplastic adhesive coats on the outside surface of the foil layer and on the inside surface of the paperboard layer form a plastic-to-plastic bond between the foil layer and the paperboard layer. An extruded plastic forms an outer layer of the composite container body and provides a plastic-to-plastic bond with the thermoplastic adhesive coat on the outside surface of the paperboard layer. The composite body may be sealed with metal top and bottom end closures.
Inventors
- 👤 Ralph William Kaercher
- 👤 John Robert Platt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:11
CPC Classifications
B; B65; B65D; B65D3/00; B65D3/22; Y; Y10; Y10S; Y10S220/00; Y10S220/30
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
19 words
A composite container body for packaging pressurized fluid materials according to claim 1, wherein: said plastic layer is seamless.
Claim 2
Dependent Claim
22 words
A composite container body for packaging pressurized fluid materials according to claim 1, wherein: said plastic layer is a layer of thermoplastic.
Claim 3
Dependent Claim
22 words
A composite container body for packaging pressurized fluid materials according to claim 1, wherein: said plastic layer is a layer of polyolefin.
Claim 4
Dependent Claim
22 words
A composite container body for packaging pressurized fluid materials according to claim 1, wherein: said plastic layer is a layer of polyethylene.
Claim 5
Dependent Claim
23 words
A composite container body for packaging pressurized fluid materials according to claim 1, wherein: said plastic layer is a layer of pigmented plastic.
Claim 6
Dependent Claim
23 words
A composite container body for packaging pressurized fluid materials according to claim 1, wherein: said plastic layer is an extruded layer of plastic.
Claim 7
Dependent Claim
23 words
A composite container body for packaging pressurized fluid materials according to claim 1, wherein: said plastic layer is a layer of thermoplastic combinations.
Claim 8
Dependent Claim
34 words
A composite container body for packaging pressurized fluid materials according to claim 1, wherein: said foil layer is a spirally-wound ply; said paperboard layer is a spirally-wound ply; and said plastic layer is seamless.
Claim 9
Dependent Claim
68 words
A composite container body for packaging pressurized fluid materials according to claim 1, wherein: said metal foil layer is a ply of a strong aluminum alloy of approximately 0.001 inch thickness; said paperboard layer is a ply of 42 lb./MSF unbleached kraft paperboard of approximately 0.011 inch thickness; and said plastic layer is a layer of polyolefin having a thickness within the range of 0.002 to 0.030 inch.
Claim 10
Dependent Claim
52 words
A composite container body for packaging pressurized fluid materials according to claim 1, further comprising: said foil layer having an organic slip coat on its inside surface and a thermoplastic adhesive coat on its outside surface; and said paperboard layer having a thermoplastic adhesive coat on its inside and its outside surfaces.
Claim 11
Dependent Claim
67 words
A composite container body for packaging pressurized fluid materials according to claim 1, further comprising: an organic slip coat on the inside surface of said foil layer; a first thermoplastic adhesive coat on the outside surface of said foil layer; a second thermoplastic adhesive coat on the inside surface Of said paperboard layer; and a third thermoplastic adhesive coat on the outside surface of said paperboard layer.
Claim 12
Dependent Claim
96 words
A composite container body for packaging pressurized fluid materials, comprising: a ply of thick, strong metal foil forming an inner layer of the composite body; a ply of paperboard forming a middle layer of the composite body, the outer surface of said foil layer being adhered to the inside surface of said paperboard layer by means of a plastic-to-paper bond; and a layer of plastic forming the outer layer of the composite body, the outside surface of said paperboard layer being adhered to the inside surface of said plastic layer by means of a plastic-to-plastic bond.
Claim 13
Dependent Claim
48 words
A composite container body for packaging pressurized fluid materials according to claim 13, further comprising: said foil layer having an organic slip coat on its inside surface and a thermoplastic adhesive coat on its outside surface; said paperboard layer having a thermoplastic adhesive coat on its outside surface.
Claim 14
Dependent Claim
157 words
A composite container for packaging pressurized fluid materials having a composite body sealed with top and bottom metal end closures, comprising: a ply of thick, strong metal foil forming an inner layer of the composite body, said layer having an organic slip coat on its inside surface and a thermoplastic adhesive coat on its outside surface; a ply of paperboard forming a middle layer of the composite body, said paperboard layer having a thermoplastic adhesive coat on its inside surface and its outside surface, the outside surface of said foil layer being adhered to the inside surface of said paperboard layer by means of a plastic-to-plastic bond; a layer of plastic forming the outer layer of the composite body, the outside surface of said paperboard layer being adhered to the inside surface of said plastic layer by means of a plastic-to-plastic bond; and top and bottom metal end closures sealed to opposite ends of the composite body.
Claim 15
Dependent Claim
67 words
A composite container for packaging pressurized fluid materials according to claim 15, wherein: said metal foil layer is a ply of a strong aluminum alloy of approximately 0.001 inch thickness; said paperboard layer is a ply of 42 lb./MSF unbleached kraft paperboard of approximately 0.011 inch thickness; and said plastic layer is a layer of polyolefin of a thickness within the range of 0.002 to 0.030 inch.
Claim 16
Dependent Claim
169 words
A composite container for packaging pressurized fluid materials having a composite body sealed with top and bottom metal end closures, comprising: a ply of thick, strong metal foil forming an inner layer of the composite body; an organic slip coat on the inside surface of said metal foil layer; a first thermoplastic adhesive coat on the outside surface of said metal foil layer; a ply of paperboard forming a middle layer of the composite body; a second thermoplastic adhesive coat on the inside surface of said paperboard layer; a third thermoplastic adhesive coat on the outside surface of said paperboard layer; a first plastic-to-plastic bond between the outside surface of said metal foil layer and the inside surface of said paperboard layer; a layer of plastic forming the outer layer of the composite body; a second plastic-to-plastic bond between the outside surface of said paperboard layer and the inside surface of said plastic layer; and top and bottom metal end closures sealed to opposite ends of the composite body.
Claim 17
Dependent Claim
136 words
A composite container for packaging pressurized fluid materials according to claim 17, wherein: said metal foil layer is a ply of a strong aluminum alloy of approximately 0.001 inch thickness; said first thermoplastic adhesive coat on the outside surface of said foil layer is a low density polyethylene of approximately 0.0008 inch thickness; said paperboard layer is a ply of 42 lb./MSF unbleached kraft paperboard of approximately 0.011 inch thickness; said second thermoplastic adhesive coat on the inside surface of said paperboard layer is a low density polyethylene of approximately 0.0008 inch thickness; said third thermoplastic adhesive coat on the outside surface of said paperboard layer is a high density polyethylene of approximately 0.0005 inch thickness; and said plastic layer is a layer of polyolefin of a thickness within the range of 0.002 to 0.030 inch.
Claim 18
Dependent Claim
134 words
In a composite container body for packaging pressurized fluid materials, the combination of structural materials which provide substantially all of the internal pressure-holding capability of the composite container body, comprising: a ply of thick, strong metal foil forming an inner layer of the composite body, said foil being spirally-over-lapped onto itself to form the foil layer with the inside surface of the metal foil being adhered to the outside surface of the metal foil in the area of overlap by means of an organic slip coat-to-plastic bond; and a ply of paperboard forming a middle layer of the composite body, said paperboard having skived edges which are spirally-overlapped to form the paperboard layer having a substantially uniform single ply thickness, said skived edges being adhered to one another by means of a plastic-to-plastic bond.
Claim 19
Dependent Claim
45 words
In a composite container body, according to claim 19, wherein: said metal foil layer is a ply of a strong aluminum alloy of approximately 0.001 inch thickness; and said paperboard layer is a ply of 42 lb./MSF unbleached kraft paperboard of approximately 0.011 inch thickness.
Claim 20
Dependent Claim
33 words
In a composite container body, according to claim 19, wherein: the outside surface of said foil layer is adhered to the inside surface of said paperboard layer by means of a plastic-to-plastic bond.
Claim 21
Dependent Claim
126 words
In a composite container body for packaging pressurized fluid materials, the combination of structural materials which provide substantially all of the internal pressure-holding capability of the composite container body, comprising: a ply of thick, strong metal foil forming an inner layer of the composite body, said layer having an organic slip coat on its inside surface, a thermoplastic adhesive coat on its outside surface, and a primer coat between the outside surface of said foil and said thermoplastic adhesive coat; and a ply of paperboard forming a middle layer of the composite body, said paperboard layer having a thermoplastic adhesive coat on its inside surface, the outside surface of said foil layer being adhered to the inside surface of said paperboard layer by a plastic-to-plastic bond.
Claim 22
Dependent Claim
129 words
A composite container body for packaging pressurized fluid materials, comprising: a ply of thick, strong, metal foil forming an inner layer of the composite body, said ply of foil being spirally-overlapped onto itself to form the foil layer with the inside surface of the metal foil being adhered to the outside surface of the metal foil in the area of overlap by means of an organic slip coat-to-plastic bond; a ply of paperboard forming a middle layer of the composite body, said paperboard ply having skived edges which are spirally-overlapped to form the paperboard layer having a substantially uniform, single ply thickness, said skived edges being adhered to one another by means of a plastic-to-plastic bond; and a layer of plastic forming the outer layer of the composite body.
Claim 23
Dependent Claim
127 words
A composite container body for packaging pressurized fluid materials, comprising: a ply of strong aluminum alloy approximately 0.001 inch thick forming an inner layer of the composite body; an organic slip coat on the inside surface of said aluminum alloy layer; a low density polyethylene approximately 0.0008 inches thick on the outside surface of said aluminum alloy layer; a ply of 42 lb./MSF unbleached kraft paperboard approximately 0.011 inch thick forming a middle layer of the composite body; a low density polyethylene approximately 0.0008 inch thick on the inside surface of said paperboard; a high high density polyethylene approximately 0.0005 inch thick on the outside surface of said paperboard; and a layer of polyolefin 0.002 to 0.030 inch thick forming the outer layer of the composite body.
Claim 24
Dependent Claim
110 words
A composite container body for packaging pressurized fluid materials, comprising: a ply of thick, strong metal foil forming an inner layer of the composite body, said foil having an organic slip coat on the inside surface and a first, thermoplastic adhesive coat on its outside surface; a ply of paperboard forming a middle layer of the composite body, said paperboard having a second, thermoplastic adhesive coat on its inside surface and a third, thermoplastic adhesive coat on its outside surface; a layer of plastic forming the outer layer of the composite body; and a primer coat between said first, thermoplastic adhesive coat and the outside surface of said metal foil.
Claim 25
Dependent Claim
170 words
In a composite container body for packaging pressurized fluid materials, the combination of structural materials which provide substantially all of the internal pressure-holding capability of the composite container body, comprising: a ply of thick, strong metal foil having an organic slip coat on its inside surface, a thermoplastic adhesive coat on its outside surface and being spirally-overlapped onto itself, said foil forming an inner layer of the composite body with the inside surface of the metal foil being adhered to the outside surface of the metal foil in the area of overlap by means of an organic slip coat-to-plastic bond; and a ply of paperboard having skived edges spirally-overlapped forming a substantially uniform single ply thickness middle layer of the composite body, said paperboard layer having a thermoplastic adhesive coat on its inside surfaces, said skived edges being adhered to one another by means of a plastic-to-plastic bond, and the outside surface of said foil layer being adhered to the inside surface of said paperboard layer by a plastic-to-plastic bond.
Claim 26
Dependent Claim
89 words
In a composite container body, according to claim 26, wherein: said metal foil layer is a ply of a strong aluminum alloy of approximately 0.001 inch thickness; said thermoplastic adhesive coat on the outside surface of said foil layer is a low density polyethylene of approximately 0.0008 inch thickness; said paperboard layer is a ply of 42 lb./MSF unbleached kraft paperboard of approximately 0.011 inch thickness; and said thermoplastic adhesive coat on the inside surface of said paperboard layer is a low density polyethylene of approximately 0.0008 inch thickness.
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) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |