US4153206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crushing process for recyclable plastic containers
Assignee: Ethyl Corp
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Filing: 1977-03-31
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Granted: 1979-05-08
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Expires: 1997-03-31
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
2026-11-02 01:08
CPC Classifications
B; B30; B30B; B30B9/00; B30B9/32; B30B9/321; B30B9/325; B02; B02C; B02C19/00; B02C19/0056; B02C19/0081; B02C19/0093
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
93 words
A process for separating and recovering the laminae of a rigid, narrow-necked plastic bottle having laminated walls, the laminated walls including a fluid-barrier lamina of a flexible non-frangible material which is highly impermeable to fluids, and a load-bearing lamina of a frangible plastic material which will delaminate from said fluid-barrier lamina when said bottle is crushed, said process comprising: (a) crushing said plastic bottle to separate said flexible, non-frangible, fluid-barrier lamina from said frangible load-bearing lamina to break said load-bearing lamina into chips, and (b) separating said chips from said non-frangible fluid-barrier lamina.
Claim 2
Dependent Claim
93 words
A process for separating and recovering the laminae of a rigid, narrow-necked plastic bottle having laminated walls, the laminated walls including a fluid-barrier lamina of a flexible non-frangible material which is highly impermeable to fluids, and a load-bearing lamina of a frangible plastic material which will delaminate from said fluid-barrier lamina when said bottle is crushed, said process comprising: (a) crushing said plastic bottle to separate said flexible, non-frangible, fluid-barrier lamina from said frangible load-bearing lamina to break said load-bearing lamina into chips, and (b) separating said chips from said non-frangible fluid-barrier lamina.
Claim 3
Dependent Claim
29 words
The process of claim 1 wherein said load-bearing lamina is located on the outside of said bottle and said fluid-barrier lamina is located on the inside of the bottle.
Claim 4
Dependent Claim
45 words
The process of claim 1 wherein said chips are separated from said fluid-barrier lamina by placing said chips and said fluid-barrier on a screen having openings therein of a size sufficient to transmit said chips through said screen and to retain said fluid barrier lamina.
Claim 5
Dependent Claim
19 words
The process of claim 3 wherein said screen is an endless screen which is continuously moving in one direction.
Claim 6
Dependent Claim
18 words
The process of claim 4 wherein bin means is located beneath said screen means to receive said chips.
Claim 7
Dependent Claim
24 words
The process of claim 4 wherein bin means is located at the discharge end of said screen means to receive said non-frangible fluid-barrier lamina.
Claim 8
Dependent Claim
57 words
The process of claim 1 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 ##STR9## where X is hydrogen, a halogen, or an alkyl group having up to 4 carbon atoms and one or more alpha-olefinic comonomers.
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) | 1982-05-07 | 1982-11-06 | 1983-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-07 | 1986-11-06 | 1987-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-07 | 1990-11-06 | 1991-05-08 | $7700.00 | Window Closed / Lapsed |