US3940001A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recyclable plastic containers
Assignee: Ethyl Corp
•
Filing: 1974-05-06
•
Granted: 1976-02-24
•
Expires: 1994-05-06
Abstract
Abstract A recyclable blow molded, injection blow molded or injection molded plastic container having laminated walls that include a frangible load-bearing lamina and a non-frangible fluid-barrier lamina which can be easily separated from each other in a crushing operation and recycled to make another container.
Inventors
- 👤 Albert J. Haefner
- 👤 Michael E. Kucsma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:32
CPC Classifications
B; B65; B65D; B65D23/00; B65D23/02; B29; B29C; B29C49/00; B29C49/22; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1379
Claims Analysis
Total Claims: 44
Claim 1
Independent Claim
50 words
A rigid narrow-necked plastic bottle having laminated walls, the laminated walls comprising: a. a fluid-barrier lamina of a flexible non-frangible material which is highly impermeable to fluids, and b. a load-bearing lamina of a frangible plastic material which will delaminate from said fluid barrier lamina when said bottle is crushed.
Claim 2
Dependent Claim
50 words
A rigid narrow-necked plastic bottle having laminated walls, the laminated walls comprising: a. a fluid-barrier lamina of a flexible non-frangible material which is highly impermeable to fluids, and b. a load-bearing lamina of a frangible plastic material which will delaminate from said fluid barrier lamina when said bottle is crushed.
Claim 3
Dependent Claim
28 words
The bottle of claim 1 wherein the load-bearing lamina is on the outside of the bottle and the fluid barrier lamina is on the inside of the bottle.
Claim 4
Dependent Claim
27 words
The bottle of claim 1 wherein the load-bearing lamina is on the inside of the bottle and the fluid-barrier lamina is on the outside of the bottle.
Claim 5
Dependent Claim
17 words
The bottle of claim 1 wherein the fluid-barrier lamina is sandwiched between two or more load-bearing laminae.
Claim 6
Dependent Claim
24 words
The bottle of claim 1 wherein said load-bearing lamina has a thickness of 3 to about 10 times the thickness of the fluid-barrier lamina.
Claim 7
Dependent Claim
12 words
The bottle of claim 1 wherein the bottle has a threaded neck.
Claim 8
Dependent Claim
10 words
The bottle of claim 1 wherein the bottle is transparent.
Claim 9
Dependent Claim
23 words
The bottle of claim 1 wherein the laminated walls have an oxygen permeability of no more than 6.5 cc-mils/100 sq.in./24 hrs/atmos. at 73°F.
Claim 10
Dependent Claim
24 words
The bottle of claim 1 wherein the laminated walls have a water permeability of no more than 8.0 g-mils/24 hrs/100 sq. in. at 73°F.
Claim 11
Dependent Claim
25 words
The bottle of claim 1 wherein the laminated walls have a carbon dioxide permeability of no more than 20 cc-mils/24 hrs/100 sq. in. at 73°F.
Claim 12
Dependent Claim
51 words
The bottle of claim 1 wherein the laminated walls have an oxygen permeability of no more than 6.5 cc-mils/100 sq.in./24 hrs/atmos. at 73°F; a water permeability of no more than 8.0 g-mils/24 hrs/100 sq.in. at 73°F; and a carbon dioxide permeability of no more than 20 cc-mils/24 hrs/100 sq.in./atmos. at 73°F.
Claim 13
Dependent Claim
79 words
The bottle of claim 1 wherein the walls are composed of two laminae, the load-bearing lamina being on the outside of the bottle and the fluid-barrier lamina being on the inside of the bottle, said laminated walls having an oxygen permeability of no more than 6.5 cc-mils/100 sq.in./24 hrs/atmos. at 73°F, a water permeability of no more than 8.0 g-mil/24 hrs/100 sq.in. at 73°F, and a carbon dioxide permeability of no more than 20 cc-mils/24 hrs/100 sq.in./atmos. at 73°F.
Claim 14
Dependent Claim
50 words
A rigid blow molded plastic container having laminated walls, the laminated walls comprising: a. a fluid-barrier lamina of a flexible non-frangible material which is highly impermeable to fluids, and b. a load-bearing lamina of a frangible plastic material which will delaminate from said fluid-barrier lamina when said container is crushed.
Claim 15
Dependent Claim
50 words
A rigid blow molded plastic container having laminated walls, the laminated walls comprising: a. a fluid-barrier lamina of a flexible non-frangible material which is highly impermeable to fluids, and b. a load-bearing lamina of a frangible plastic material which will delaminate from said fluid-barrier lamina when said container is crushed.
Claim 16
Dependent Claim
11 words
The container of claim 13 wherein the container is a bottle.
Claim 17
Dependent Claim
12 words
The container of claim 13 wherein the container is a transparent bottle.
Claim 18
Dependent Claim
12 words
The container of claim 13 wherein the container is a narrow-necked bottle.
Claim 19
Dependent Claim
15 words
The container of claim 13 wherein the container is a bottle having a threaded neck.
Claim 20
Dependent Claim
57 words
The container of claim 13 wherein said fluid-barrier lamina comprises a polymer containing at least 50 percent by weight of a polymeric nitrile material formed from one or more nitrile monomers of the formula ##EQU9## where X is hydrogen, a halogen, or an alkyl group having up to 4 carbon atoms and one or more alpha-olefinic comonomers.
Claim 21
Dependent Claim
25 words
The container of claim 18 wherein said polymer is a polymer formed in the presence of a homopolymer or copolymer of a conjugated diene monomer.
Claim 22
Dependent Claim
96 words
The container of claim 18 wherein said fluid-barrier lamina is a polymer containing at least 50 percent by weight of a polymeric nitrile material made from a mixture of nitrile monomers made up of (a) from about 50 percent to about 95 percent by weight of a monomer having the structure ##EQU10## where X is hydrogen, a halogen, or an alkyl group having up to 4 carbon atoms, and (b) from about 5 percent to about 50 percent by weight of at least one dicyanobutene monomer selected from the group consisting of 1,3-dicyano-1-butene, 1,4-dicyano-1-butene, and 2,4-dicyano-1-butene.
Claim 23
Dependent Claim
25 words
The container of claim 20 wherein said polymer is a polymer formed in the presence of a homopolymer or copolymer of a conjugated diene monomer.
Claim 24
Dependent Claim
27 words
The container of claim 20 wherein said dicyanobutene material comprises a mixture of two or more isomers selected from the group consisting of 1,3-dicyano-1-butene, 1,4-dicyano-1-butene, and 2,4-dicyano-1-butene.
Claim 25
Dependent Claim
11 words
The container of claim 13 wherein said load-bearing lamina is polystyrene.
Claim 26
Dependent Claim
12 words
The container of claim 13 wherein said load-bearing lamina is polyvinyl chloride.
Claim 27
Dependent Claim
16 words
The container of claim 13 wherein said load-bearing lamina is a copolymer of styrene and acrylonitrile.
Claim 28
Dependent Claim
51 words
A rigid injection blow molded plastic container havng laminated walls, the laminated walls comprising: a. a fluid-barrier lamina of a flexible non-frangible material which is highly impermeable to fluids, and b. a load-bearing lamina of a frangible plastic material which will delaminate from said fluid-barrier lamina when said container is crushed.
Claim 29
Dependent Claim
51 words
A rigid injection blow molded plastic container havng laminated walls, the laminated walls comprising: a. a fluid-barrier lamina of a flexible non-frangible material which is highly impermeable to fluids, and b. a load-bearing lamina of a frangible plastic material which will delaminate from said fluid-barrier lamina when said container is crushed.
Claim 30
Dependent Claim
11 words
The container of claim 26 wherein the container is a bottle.
Claim 31
Dependent Claim
12 words
The container of claim 26 wherein the container is a narrow-necked bottle.
Claim 32
Dependent Claim
11 words
The container of claim 26 wherein the container is a tub.
Claim 33
Dependent Claim
10 words
The container of claim 26 wherein the container is can-shaped.
Claim 34
Dependent Claim
58 words
The container of claim 26 wherein said fluid-barrier lamina comprises a polymer containing at least 50 percent by weight of a polymeric nitrile material formed from one or more nitrile monomers of the formula ##EQU11## where X is a hydrogen, a halogen, or an alkyl group having up to 4 carbon atoms and one or more alpha-olefinic comonomers.
Claim 35
Dependent Claim
25 words
The container of claim 31 wherein said polymer is a polymer formed in the presence of a homopolymer or copolymer of a conjugated diene monomer.
Claim 36
Dependent Claim
11 words
The container of claim 26 wherein said load-bearing lamina is polystyrene.
Claim 37
Dependent Claim
12 words
The container of claim 26 wherein said load-bearing lamina is polyvinyl chloride.
Claim 38
Dependent Claim
16 words
The container of claim 26 wherein said load-bearing lamina is a copolymer of styrene and acrylonitrile.
Claim 39
Dependent Claim
49 words
A rigid injection molded plastic container having laminated walls, the laminated walls comprising: a. a fluid-barrier lamina of a flexible non-frangible material which is highly impermeable to fluids, and b. a load-bearing lamina of a frangible plastic material which will delaminate from said fluid-barrier when said container is crushed.
Claim 40
Dependent Claim
49 words
A rigid injection molded plastic container having laminated walls, the laminated walls comprising: a. a fluid-barrier lamina of a flexible non-frangible material which is highly impermeable to fluids, and b. a load-bearing lamina of a frangible plastic material which will delaminate from said fluid-barrier when said container is crushed.
Claim 41
Dependent Claim
11 words
The container of claim 36 wherein the container is a bottle.
Claim 42
Dependent Claim
15 words
The container of claim 36 wherein the container is a bottle with a threaded neck.
Claim 43
Dependent Claim
11 words
The container of claim 36 wherein the container is a tub.
Claim 44
Dependent Claim
10 words
The container of claim 36 wherein the container is can-shaped.
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) | 1979-02-23 | 1979-08-25 | 1980-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-23 | 1983-08-25 | 1984-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-23 | 1987-08-25 | 1988-02-24 | $7700.00 | Window Closed / Lapsed |