Patent US5512090A successfully refreshed from Google Patents.
US5512090A
Expired / Lapsed
US
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Compositions for resilient biodegradable packaging material products
Assignee: Free Flow Packaging Corp
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Filing: 1994-09-12
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Granted: 1996-04-30
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Expires: 2014-09-12
Abstract
Abstract A resilient, low density, biodegradable, packaging material which is formed by the extrusion through a twin-screw extruder of a base mixture of vegetable oil, polyvinyl alcohol, glycerine, a proteinaceous grain meal, glycerol monostearate, a non-modified starch and water.
Inventors
- 👤 Hans G. Franke
- 👤 Donald R. Bittner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:27
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/12; C08J9/125; C08L; C08L3/00; C08L3/02; C08J2303/00; C08J2303/02; C08L2201/00; C08L2201/06; C08L29/00; C08L29/02; C08L29/04; C08L91/00; C08L99/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
91 words
A base mixture for use in producing a resilient, biodegradable packaging material product, said mixture comprising the following first six ingredients plus added water expressed in % by weight of the first six ingredients: (a) vegetable oil: about 0.5% to about 5%; (b) polyvinyl alcohol: about 5% to about 25%; (c) glycerine: about 0.5% to about 10%; (d) proteinaceous grain meal: about 3% to about 10%; (e) glycerol monostearate: about 0.1% to about 0.8%; (f) non-modified starch: about 45% to about 90%; and (g) added water: about 0% to about 30%.
Claim 2
Dependent Claim
91 words
A base mixture for use in producing a resilient, biodegradable packaging material product, said mixture comprising the following first six ingredients plus added water expressed in % by weight of the first six ingredients: (a) vegetable oil: about 0.5% to about 5%; (b) polyvinyl alcohol: about 5% to about 25%; (c) glycerine: about 0.5% to about 10%; (d) proteinaceous grain meal: about 3% to about 10%; (e) glycerol monostearate: about 0.1% to about 0.8%; (f) non-modified starch: about 45% to about 90%; and (g) added water: about 0% to about 30%.
Claim 3
Dependent Claim
91 words
A base mixture for use in producing a resilient, biodegradable packaging material product, said mixture comprising the following first six ingredients plus added water expressed in % by weight of the first six ingredients: (a) vegetable oil: about 0.5% to about 3%; (b) polyvinyl alcohol: about 6% to about 20%; (c) glycerine: about 0.5% to about 3%; (d) proteinaceous grain meal: about 3% to about 7%; (e) glycerol monostearate: about 0.1% to about 0.5%; (t) non-modified starch: about 55% to about 88%; and (g) added water: about 5% to about 15%.
Claim 4
Dependent Claim
91 words
A base mixture for use in producing a resilient, biodegradable packaging material product, said mixture comprising the following first six ingredients plus added water expressed in % by weight of the first six ingredients: (a) vegetable oil: about 0.5% to about 3%; (b) polyvinyl alcohol: about 6% to about 20%; (c) glycerine: about 0.5% to about 3%; (d) proteinaceous grain meal: about 3% to about 7%; (e) glycerol monostearate: about 0.1% to about 0.5%; (t) non-modified starch: about 55% to about 88%; and (g) added water: about 5% to about 15%.
Claim 5
Dependent Claim
60 words
The mixture of claim 2 wherein said vegetable oil content is about 0.9%, said polyvinyl alcohol content is about 18.7%, said glycerine content is about 0.9%, said grain meal content is about 4.7%, said glycerol monostearate content is about 0.2%, said starch content is about 74.6%, and said water is added at an amount of about 6% to about 9%.
Claim 6
Dependent Claim
71 words
A biodegradable packaging material product comprising an expanded composition of about 0.5% to about 5% vegetable oil, about 5% to about 25% polyvinyl alcohol, about 0.5% to about 10% glycerine, about 3% to about 10% proteinaceous grain meal, about 0.1% to about 0.8% glycerol monostearate and about 45% to about 70% non-derivatized starch, said product having a moisture content of from about 7.0% to about 12.0% by weight of said composition.
Claim 7
Dependent Claim
71 words
A biodegradable packaging material product comprising an expanded composition of about 0.5% to about 5% vegetable oil, about 5% to about 25% polyvinyl alcohol, about 0.5% to about 10% glycerine, about 3% to about 10% proteinaceous grain meal, about 0.1% to about 0.8% glycerol monostearate and about 45% to about 70% non-derivatized starch, said product having a moisture content of from about 7.0% to about 12.0% by weight of said composition.
Claim 8
Dependent Claim
36 words
The product of claim 4 having a creep of about 10% to about 18%, a set of about 6% to about 16% and a bulk density of from about 0.3 to about 2.0 lb/ft 3 .
Claim 9
Dependent Claim
30 words
The product of claim 5 wherein the creep is about 15%, the set is about 8% and the bulk density is from about 0.4 to about 0.65 lb/ft 3 .
Claim 10
Dependent Claim
16 words
The product of claim 6 wherein the moisture content is from about 10.0% to about 12.0%.
Claim 11
Dependent Claim
102 words
A base mixture for use in producing a resilient, biodegradable packaging material product, said mixture comprising the following first six ingredients plus added water expressed in % by weight of the first six ingredients: (a) vegetable oil: about 0.5% to about 5%; (b) polyvinyl alcohol: about 5% to about 25%; (c) glycerine: about 0.5% to about 10%; (d) proteinaceous grain meal: about 3% to about 10%; (e) glycerol monostearate: about 0.1% to about 0.8%; (f) non-modified starch with an about 19% to about 44% by weight amylose content: about 45% to about 90%; and (g) added water: about 0% to about 30%.
Claim 12
Dependent Claim
102 words
A base mixture for use in producing a resilient, biodegradable packaging material product, said mixture comprising the following first six ingredients plus added water expressed in % by weight of the first six ingredients: (a) vegetable oil: about 0.5% to about 5%; (b) polyvinyl alcohol: about 5% to about 25%; (c) glycerine: about 0.5% to about 10%; (d) proteinaceous grain meal: about 3% to about 10%; (e) glycerol monostearate: about 0.1% to about 0.8%; (f) non-modified starch with an about 19% to about 44% by weight amylose content: about 45% to about 90%; and (g) added water: about 0% to about 30%.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-04-30 | 1999-10-30 | 2000-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-04-30 | 2003-10-30 | 2004-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-04-30 | 2007-10-30 | 2008-04-30 | $7700.00 | Window Closed / Lapsed |