US5077111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recyclable multilayer plastic preform and container blown therefrom
Assignee: Graham Packaging Pet Technologies Inc
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Filing: 1990-01-12
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Granted: 1991-12-31
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Expires: 2010-01-12
Abstract
Abstract This relates to a multilayer preform and a container blow molded from such preform wherein both the preform and the container are of a multilayer construction with there being utilized as an oxygen scavanger and oxygen barrier and a blend of either PET/MXD-6 nylon or PET/MXD-6 nylon/Co. In the resultant container, the percentage of MXD-6 nylon will be less than 1% and the container will be directly recyclable. Also, the percentage of MXD-6 nylon in the container will be such that there will be no noticable reduction in the clarity of the container. Also, because PET forms a part of the blend which provides the oxygen scavanger and barrier, the layers in the container will be bonded to one another.
Inventors
- 👤 Wayne N. Collette
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:54
CPC Classifications
B; B65; B65D; B65D1/00; B65D1/02; B65D1/0207; B65D1/0215; B29; B29C; B29C49/00; B29C49/22; B29C2949/00; B29C2949/30; B29C2949/3008; B29C2949/3009; B29C2949/3012; B29C2949/3016; B29C2949/302; B29C2949/3024; B29C2949/3026; B29C2949/3028; B29C2949/303; B29C2949/3032; B29C2949/3034; B29C2949/3036; B29C2949/3038; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1379; Y10T428/1383; Y10T428/31504; Y10T428/31725; Y10T428/31736
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
127 words
A plastic preform for blow molding into a plastic container, said preform including a body, a base and a neck finish, at least a portion of said preform being only of a five layer construction and consisting of inner and outer layers, a core layer and inner and outer intermediate layers, said inner and outer layers and said core layer being formed of PET, and said inner and outer intermediate layers being formed of a blend of PET and nylon, said blend having oxygen absorbing characteristics and forming oxygen barriers, wherein the percentage of nylon in said preform being one wherein containers stretch blow molded from said preform are clear, and said preform and a container formed from said preform are directly recyclable as preforms for containers.
Claim 2
Dependent Claim
127 words
A plastic preform for blow molding into a plastic container, said preform including a body, a base and a neck finish, at least a portion of said preform being only of a five layer construction and consisting of inner and outer layers, a core layer and inner and outer intermediate layers, said inner and outer layers and said core layer being formed of PET, and said inner and outer intermediate layers being formed of a blend of PET and nylon, said blend having oxygen absorbing characteristics and forming oxygen barriers, wherein the percentage of nylon in said preform being one wherein containers stretch blow molded from said preform are clear, and said preform and a container formed from said preform are directly recyclable as preforms for containers.
Claim 3
Dependent Claim
13 words
A plastic preform according to claim 1 wherein said nylon is MXD-6 nylon.
Claim 4
Dependent Claim
29 words
A plastic preform according to claim 2 wherein said MXD-6 nylon constitutes no greater than on the order of 1% by volume of the total material of said preform.
Claim 5
Dependent Claim
33 words
A plastic preform according to claim 2 wherein the percentage of MXD-6 nylon constitutes on the order of 25 to 75% by volume of the material forming said inner and outer intermediate layers.
Claim 6
Dependent Claim
30 words
A plastic preform according to claim 4 wherein the material of said blend constitutes on the order of 1 to 8% by volume of the total material of said preform.
Claim 7
Dependent Claim
28 words
A plastic preform according to claim 1 wherein the material of said blend constitutes on the order of 4% by volume of the total material of the preform.
Claim 8
Dependent Claim
30 words
A plastic preform according to claim 1 wherein the material of said blend constitutes on the order of 1 to 8% by volume of the total material of said preform.
Claim 9
Dependent Claim
20 words
A plastic preform according to claim 2 wherein said blend of PET and MXD-6 nylon includes a quantity of Co.
Claim 10
Dependent Claim
33 words
A plastic preform according to claim 8 wherein the percentage of said MXD-6 nylon and Co in said preform is such wherein said preform and container formed from said preform are directly recyclable.
Claim 11
Dependent Claim
20 words
A plastic preform according to claim 8 wherein said Co constitutes on the order of 5-50 ppm of said preform.
Claim 12
Dependent Claim
42 words
A plastic preform according to claim 8, wherein said Co constitutes on the order of 5.50 ppm of said preform, and said MXD-6 nylon constitutes no greater than on the order of 1% by volume of the total material of said preform.
Claim 13
Dependent Claim
29 words
A plastic preform according to claim 10 wherein said MXD-6 nylon constitutes no greater than on the order of 1% by volume of the total material of said preform.
Claim 14
Dependent Claim
10 words
A container blow molded from the preform of claim 1.
Claim 15
Dependent Claim
14 words
A container according to claim 13 wherein said layers are bonded to one another.
Claim 16
Dependent Claim
10 words
A container blow molded from the preform of claim 8.
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) | 1994-12-30 | 1995-07-01 | 1995-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-12-30 | 1999-07-01 | 1999-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-12-30 | 2003-07-01 | 2003-12-31 | $7700.00 | Window Closed / Lapsed |